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  • Laptop won't boot with both memory slots used

    - by Johnny W
    I'm currently trying to upgrade my old Sony Vaio VGN-SZ1HP/B to 2GB of RAM. It already had 1GB of Crucial RAM in one of its slots, and one empty. I checked on Crucial.com and it confirms that each bank can hold 1GB of PC2-5300. The 1GB stick already installed was this, but Crucial's page recommended this... The two are identical from what I can make out, so I just ordered another one of the former. Unfortunately the machine refuses to even POST with both sticks installed. If I remove the old RAM from Slot 1 and replace it with the new RAM it runs fine. If I leave Slot 1 empty and put RAM (either stick) in Slot 2, it won't POST. Basically it seems that Slot 2 just isn't working properly. Does anyone have any ideas on how to solve this problem? Or maybe have any experience with this sort of thing with Sony Vaios? Thanks for any help!

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  • How do I remove a USB drive's write protection?

    - by nate
    I have a SanDisk Cruser Blade USB stick that suddenly seems to be write protected. I tried running DiskPart but after I write the command "attributes disk clear readonly" it displays this: Microsoft DiskPart version 5.1.3565 ADD - Add a mirror to a simple volume. ACTIVE - Marks the current basic partition as an active boot partition. ASSIGN - Assign a drive letter or mount point to the selected volume. BREAK - Break a mirror set. CLEAN - Clear the configuration information, or all information, off the disk. CONVERT - Converts between different disk formats. CREATE - Create a volume or partition. DELETE - Delete an object. DETAIL - Provide details about an object. EXIT - Exit DiskPart EXTEND - Extend a volume. HELP - Prints a list of commands. IMPORT - Imports a disk group. LIST - Prints out a list of objects. INACTIVE - Marks the current basic partition as an inactive partition. ONLINE - Online a disk that is currently marked as offline. REM - Does nothing. Used to comment scripts. REMOVE - Remove a drive letter or mount point assignment. REPAIR - Repair a RAID-5 volume. RESCAN - Rescan the computer looking for disks and volumes. RETAIN - Place a retainer partition under a simple volume. SELECT - Move the focus to an object. It's like when you type help at the DiskPart prompt, so how do I get past this? This problem started when I plugged the stick into a laptop which had viruses, if that's any help.

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  • Write Fedora.iso to USB and boot it from a Macbook

    - by MTilsted
    I have an .iso image of the full Fedora 16 install (Downloaded from http://fedoraproject.org/en/get-fedora-options#formats as "Fedora 16 DVD") and the question now is: How do I write it on a USB stick, so I can install it on my Mac book? I tried using DD as the install guide said, and that gave me a USB stick which can boot from my PC. But it can't boot from the Mac (The Mac start menu don't show it as a boot option). Edit: I downloaded a live install image, and did this (SSD is my USB 4GB thing) /sbin/mkdosfs -F 32 -n usbdisk /dev/dev/sdd1 sudo livecd-iso-to-disk --format --reset-mbr --efi /tmp/download/Fedora-16-i686-Live-KDE.iso /dev/sdd1 And this produced an image which can boot on my pc but not on my mac. This seems to indicate that the --efi is not working, because if it really was EFI it would not boot on a normal pc, would it? I then tried this: (Difference being that I write the image directory to /dev/sdd instead of /dev/sdd1) but this still will not boot on the Mac (it newer shows up at the startup screen on the Mac). sudo livecd-iso-to-disk --format --reset-mbr --efi /tmp/download/Fedora- PS: My host Linux is Fedora 13.

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  • Why might my Fedora 15 live USB persistent storage not work?

    - by Richard J Foster
    I created a Fedora 15 "live" USB stick using the live USB creator found at https://fedorahosted.org/liveusb-creator/ and the Fedora 15 i686 Desktop ISO image with the persistent storage space set to 4096MB. (The USB stick I have available has an 8GB capacity, so there should be plenty of space.) Fedora appears to boot correctly, however it seems that the persistent storage is not working. To verify this, I opened a terminal prompt, then did su - followed by yum update yum. As expected, I was informed that a new version was available. (The live CD contains version 3.2.29-4, at the time of typing 3.2.29-6 is the current version). After installing, I verified that the new version was installed by typing yum --version. I then shutdown the system using shutdown now. After the system had shut down, I rebooted and returned to the terminal prompt. On typing yum --version, I was informed that the version was 3.2.29-4 (i.e. the original version). Why might the persistent storage not be working? Is there anything I can do to fix it?

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  • How do I use key combinations on an axis on a joystick in xorg?

    - by valadil
    I'm using xserver-xorg-input-joystick on Debian Stable so I can use a joystick in place of the mouse. I have mouse movement working correctly, but got stuck trying to add functions for some other keys. These work: #Left stick #Pointer Option "MapAxis1" "mode=relative axis=1.5x" Option "MapAxis2" "mode=relative axis=1.5y" #Right stick #Arrow keys Option "MapAxis4" "mode=relative keylow=Left keyhigh=Right" Option "MapAxis5" "mode=relative keylow=Up keyhigh=Down" But when I try to make key combos (so I can navigate windows and screens in xmonad) I have no luck. #dpad #xmonad focus #up/down toggle window. l/r choose screen. Option "MapAxis8" "mode=relative keylow=Super_L,k keyhigh=Super_L,j" Option "MapAxis7" "mode=relative keylow=Super_L,w keyhigh=Super_L,e" I've also tried Super_R, plain old Super, Meta, and mod4mask, and anything else I can think of. These buttons print the letter, but don't appear to hold down the modifying key. The exception to that is shift. If I specify Shift_L or Shift_R, I get a capital letter. xev indicates that modifier keys are being pressed. If I lower Axis8, I get press Super_L, press k, release k, release Super_L. That looks like it should be working. Maybe this is an xmonad problem and not a joystick driver one? I'm also having trouble with getting an axis to use other XF86 keys: # triggers # song selection Option "MapAxis3" "mode=relative keylow=none keyhigh=XF86AudioForward" Option "MapAxis6" "mode=relative keylow=none keyhigh=XF86AudioBack" That does nothing. Any idea why? If it turns out that this isn't something I can do on an axis, but would work with a button, is there a way to treat my joysticks as buttons? Also, if anyone has suggestions for the other 5 buttons I'll have left after mouse buttons are bound, I'm listening.

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  • Permanently deleting files on Mac OS

    - by Jonik
    A while back, as relatively new Mac OS X user, I was surprised to learn that you cannot easily delete files. Directly, that is, without moving them to the trash first. On Windows and Linux this can obviously be done with ease, but not so on the Mac. I noticed this when trying clear up files from a USB memory stick — removing the files ("move to trash") does not free up space; that happens only after emptying the whole system-wide Trash. Not particularly convenient! (It seems stupid to have to empty the whole trashcan just to make some space on the USB stick. There might be gigabytes of stuff in there, and this sort of defeats its purpose - what if you'd actually need to restore something from the trash some day.) So, what's your way of getting around this? Have you bought a 3rd party application like RAW Trash for $16.95 just to delete files, or do you diligently empty the trashcan whenever needed? Or did I miss something? Also, can you convince me that this is actually the way it should be — that users shouldn't be able to fiddle with the filesystem easily? :)

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  • Setting XFCE terminal PS1 value and making it permanent

    - by Matt
    I'm trying to add the value PS1='\u@\h: \w\$ ' to my terminal in XFCE. I added the line to (what I think is) the correct area in /etc/profile. The relevant segment is: # Set a default shell prompt: #PS1='`hostname`:`pwd`# ' PS1='\u@\h: \w\$ ' if [ "$SHELL" = "/bin/pdksh" ]; then # PS1='! $ ' PS1='\u@\h: \w\$ ' elif [ "$SHELL" = "/bin/ksh" ]; then # PS1='! ${PWD/#$HOME/~}$ ' PS1='\u@\h: \w\$ ' elif [ "$SHELL" = "/bin/zsh" ]; then # PS1='%n@%m:%~%# ' PS1='\u@\h: \w\$ ' elif [ "$SHELL" = "/bin/ash" ]; then # PS1='$ ' PS1='\u@\h: \w\$ ' else PS1='\u@\h: \w\$ ' fi Most of that was already there, I just commented out the existing value and added the one I want. By manually opening the terminal and doing . profile, I can load these values, but they don't stick - I close the terminal and reopen, and I'm back to sh-4.1$. Maybe I'm doing this in the wrong place, but how can I make that value stick? All the info I've found on google is Fedora/Ubuntu-specific. I use Slackware. Any help on this matter would be greatly appreciated.

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  • Problems with USB-Devices using VDR

    - by emmsinator
    Hey Guys, I'm using VDR on vSphere4. It works sucessfully. I've already backuped several VMs with VDR and I like it very much. But now we got a problem. We have 2 VMs, using an USB-Device Server with a stick plugged in, which is definetely need by these 2 VMs for Licensing and so. Every time, I start the Backup process, the VMs lost the communication to the USB-Server and its stick after building the snapshot and while online. Because of that, the software on these VMs can't work correctly. I have to restart both Machines to solve this problem. These fact is bad for an automatic backup. Does VDR have a special function for those cases or is something like this already known? It would be no problem, to shutdown the servers for building snapshots on Saturday or Sunday. Can VDR initiate a shutdown before starting the backup process? Otherwise I must try to use scripts, but that wouldn't be so nice. Thanks a lot for your help.

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  • Windows 8 Install Hanging at first white-font boot splash

    - by Omega
    I'm trying to install the Windows 8 preview on my Samsung Series 9 (2012, Ivy Bridge). I've done a bit of a custom scheme with this one: I'm using EFI/UEFI on this system. I've seen no indication that this system supports secure boot (yay!) My SSD is set up with GPT Ubuntu is already installed and working great via UEFI. I'm trying to boot the Windows 8 install from a USB stick via UEFI I don't have access to a CD drive. The problem is that the boot seems to hang at the very first splash screen that looks like this. White windows font, the little beads don't show up. My USB stick has an activity light and it does blink for the first few seconds, but then goes back to it's "nobody is talking to me" idle pulse. What I know: UEFI booting is definitely working. Windows 8 for those few seconds seems to have some kind of access to the USB drive. My Series 9 is running the latest BIOS/firmware. Any idea what I might be able to do to get Windows 8 installed??

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  • Obtaining clear cable signal with Hauppage 1191-950Q TV Tuner

    - by Kyle B.
    I bought a Hauppauge 1191 WinTV-HVR-950Q TV Tuner a while back, and I am attempting to use it to watch TV in Windows Media Center. I do not have cable TV, however I used to have Comcast. Through experimentation, I found that connecting my coax cable into my TV, I was able to view television (i.e. 2-1 = CBS, 5-1 = NBC, etc). This also works on a second TV I use in another room. When I connect the coax cable to my TV Tuner stick and scan TV channels in Windows Media Center, it only picks up 1 station (like 81 or something). My only conclusion on this is somehow the hardware in the television is decrypting a signal that the TV tuner stick is not able to. Is that possible? Should I try a different TV tuner? Any assistance would be appreciated. I also bought a Terk HD Indoor Antenna but my reception has been flakey, so I would rather go this route if possible.

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  • Ram configuration 4x4 or 2x8?

    - by Carl B
    I am looking to upgrade my Ram to 16gigs and I am wondering if there is any distinct advantage of the way I do it. That being a 4x4 or 2x8 set up. In all my searching there have been a number of pros for each profile. I can find no benchmarck results for either setup as a compaison. So, if there are 2 profiles of the same speed, same voltage, same timing and same cas what would perform better or have a better over all benafit? A few examples from my search - a 4x4 set would lend a benafit in that if one stick failed, you only lose 25% of your Ram vs 50% in a 2x8 set up. a 2x8 set up would have less strain on the memory controler and motherboard. a 2x8 would generate less heat. a 2x8 set up is easier to over clock (not part of my need, but alot of the comparisons circled around the overclocability ease of the 2 stick set up). There is one outstanding benafit that I have found in at least the target company I have looked at and that is price. The 2x8 is nearly half the cost. My motherboard supports a max of 16 gigs and I have a 64 bit OS. Has anyone seen any performance comparisons or is 16 gb just 16 gb no matter how you slice it? And is there any merit to the above pros? Edit: as per the mobo specs - Main Memory • Supports four unbuffered DIMM of 1.5 Volt DDR3 800/1066/1333/1600*/1800*/2133* (OC) DRAM, 16GB Max

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  • How to fix Truecrypt MBR using Command Prompt or Linux live USB?

    - by Michal Stefanow
    I was playing with TrueCrypt and decided to make a fresh installation of Windows 7 from USB stick. Unfortunately Windows 7 installer: "setup was unable to create a new system partition" My entire HDD has been formatted and is visible as 320GB unallocated space, but no fdisk nor Windows 7 installer nor Windows XP installer could help. (Windows XP doesn't even see the HDD, it sees only USB stick and says "not enough space to install") It may be related to Truecrypt and pre-boot authentification, boot loader and/or MBR. As I don't have optical device I could not have created rescue disk. Right now I need a rescue of some kind, supposingly by erasing/fixing MBR using Linux live USB or using Command Promt. Another approach is to click "repair your comuter" menu from Windows 7 installer then click "restore your computer", then click OK upon error and get access to Command Prompt. Yet another another approach is to start computer without Linux USB I receive this: error:unknown filesystem. grub rescue> Any help would be greatly appreciated as my laptop is kind of not fully operational now. UPDATE: This was asked long time ago, ended up formatting everything (eventually it worked using different bootable USB)...

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  • Install Peppermint OS three on Asus EeePC

    - by Kithoth
    I just had a new Asus EeePC R051CX. Out of the box, the installed OS is Ubuntu 12.04 LTS, but I am trying to install Peppermint OS three (as single boot). Problem. Once on live CD (well, live USB stick...), I'm in trouble in both following situations: Try Peppermint OS Live In this case, the first thing I get is a message reading The system is running in low-graphics mode Your screen, graphics card, and input device settings could not be detected correctly. You will need to configure these yourself. I can solely press "return" to accept, then I have a list of 4 options to answer the question "What would you like to do?". But I simply can't do anything at this moment, except switching to console mode or rebooting (keyboard / mouse controls don't allow me to do anything else). Install Peppermint OS Something I really don't understand... it launches the Ubuntu Recovery Media (which was already installed when I received the device)! Also, it says in the bottom ERROR: This recovery media only functions on Ubuntu systems. All I can do is quit (that is, reboot). One last important thing that comes to my mind: this stick worked just fine on the other computers I've tried it on. I really hope someone could bring me the light, a friend of mine told me how cool this OS is for EeePCs. Don't want to give up! Thanks. Edit I finally could install Peppermint, but not by understanding why I couldn't do it the logical way. Instead, I reinstalled Ubuntu myself (erasing the factory one). Then, I could simply boot on my live USB and perform a fresh install of Peppermint. So, I still don't know how and why the mentioned problem occurred.

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  • Understanding Windows 8 Recovery options

    - by stuffe
    Background: I am preparing a PC that I am sending to a relative abroad, who has little or no internet access, and next to no sensible options for getting IT support should anything go wrong. As such I am trying to provide a full set of recovery options such that they are able to reinstall the OS with minimum fuss or assistance if required. The PC is a brand new Acer laptop that came with Windows 7 pre-installed (and an associated recovery partition) and a free upgrade to Windows 8. I have installed Windows 8 from scratch performing a format and clean install from media I burned from the official download. The existing Windows 7 recovery partition is still there, and I can still boot from it. I have created recovery DVDs of that in case it is ever lost. Here are my recovery options so far. I can perform a factory reset of Win 7 via the recovery partition I can perform a factory reset of Win 7 via burned recovery DVDs I can re-install Windows 8 cleanly from a DVD All of these are useful, but not what I want, because the first 2 methods use Win 7, and still fill the machine with crapware, and the latter doesn't provide for any post-install customisation and software installation. So, I am looking to see what other options are available to perform a Windows 8 recovery that will be more than a simple install. I am aware that Win8 comes with some useful refresh tools: Refresh your PC - Re-install Win 8 over the top of your existing installation, recovering from any Windows corruption etc. I can run this from my current install, although it says some files are missing that will be provided by me install or recovery media, which seems to be code for stick your install DVD in, and it starts after I do that - unfortunately for this particular laptop you need to specify a particular WIFI driver or the install bombs out part way through with IRQL errors, and this refresh method skips the part where you can load a driver, so it's no use to me. I think I can fix this by creating a custom recovery image using the recimg.exe command but it takes hours to complete so I haven't tried it yet. Reset your PC - Perform a full install and lose all your files. Again it needs my Install media inserting before it will do anything, but then it provides an error (will include later when I recreate it...) Now, these recovery options look useful (in principal, although both are fail for me) but they rely on having a working system to access the tools, which leads me to the last option, of making a Recovery USB drive. I have made a recovery drive, and it should perform loads of useful things, including copying my WIN7 recovery partition to the drive, providing the above refresh and reset options, providing other troubleshooting options and also the ability to restore from a custom image, only none of them seem to work for me. Creating the Recovery Drive - the option to include my recovery partition is greyed out. The partition exists and works fine, why will it not copy it? Refresh - I imagine this would have the same issues as I described before, but this is moot because when I try it says that the "drive where Windows is installed is locked, please unlock the drive and try again" with no info on what that means and how to do it. Restore - Again, probably pointless as I can just use the DVD, but it also errors: "unable to reset your PC. A required drive partition is missing" System Restore - should let me roll back a bad driver etc as per normal in Windows, only it simply says "To use system restore you must specify which windows installation to restore. Restart this computer, select an operating system, and select system restore" ?!?! System Image Recovery - this seems to be offering to restore from a Windows system image, but this is deprecated in Windows 8, although you can still make one if you use the Windows 7 Backup tools, however the resultant file is too large to put on the USB stick as it's FAT formatted, and would be a massive stack of DVDs anyway. So useless. It would be nice it it would work with the custom recovery image you can use with the refresh command, but there seems no option to do this. Automatic Repair - some diagnostics, which seem useless as it happily tells me it can't fix my problem, even though I have none. Command Prompt - yay, this works! What on earth do I want to use it for... Had any of the above worked, it might be useful, but as any form of install still requires you to have the DVD, and any form of custom recovery image also requires you to have either a massive stack of DVDs or an NTFS formatted backup device in addition to the recovery drive, it sort of ruins the point. It doesn't seem rocket science. I want to create a bootable USB drive that I can refresh Windows over an existing install with, perform a clean reinstall to a bare system, or recovery a customised image with existing apps installed. If anyone can point me in a direction that allows me to make a single recovery drive do these all these things, I would appreciate it. I have a 32Gb USB3 thumb drive that I bought for this very purpose, but it's seems to be fighting to let me do anything useful. At this rate I will be making a DriveImageXML recovery stick and dumping the OS with that, which I know works, but isn't so elegant as using the proper tools..

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  • Weird WLAN connection

    - by tuelsch
    I assembled my first computer on my own. As I realised it had no WLAN (AsRock Z77 Extreme 4m) I bought a WLAN stick (ZyXel NWD 2105), plugged it in, started the setup from the CD and it worked, until I restarted the PC. That's when the problems started. The stick is able to connect to the router (P-660HN-F1Z) and the connection is stable, but not the internet access. In estimately 1 minute intervals there might be a short connection timeframe and dropbox or windows update are able to download some data, but as soon as I try to open a website the internet access is away. Note that the connection to the router does not shut down and remains stable at around 80-90%. The problem is definetly located on my pc, because with my laptop and phone the connection is stable and fast. Because I was so pissed off, I bought a EW-7612PIn V2 (PCI-E WLAN adapter), same problem. Now the weird thing is, if I don't use the PC for about 2 days, start it up, there is internet access (happened with both the stick and the PCI-E card). A bit slow, but it does not get away just like that, until I shut it down. Then, no matter how many times I restart, it won't come back. I googled a lot but now I'm at the end with my latin. Has anyone had a similar problem and resolved it? Technical details: Motherboard: AsRock Z77 Extreme 4M OS: Windows 7 professional 64bit Stick: Zyxel wireless N adapter NWD2105 PCI-E card: Edimax EW-7612PIn V2 Router: ZyXel P-660HN-F1Z Windows-IP-Konfiguration Hostname . . . . . . . . . . . . : xyz Primäres DNS-Suffix . . . . . . . : Knotentyp . . . . . . . . . . . . : Hybrid IP-Routing aktiviert . . . . . . : Nein WINS-Proxy aktiviert . . . . . . : Nein Drahtlos-LAN-Adapter Drahtlosnetzwerkverbindung 5: Medienstatus. . . . . . . . . . . : Medium getrennt Verbindungsspezifisches DNS-Suffix: Beschreibung. . . . . . . . . . . : Microsoft Virtual WiFi Miniport Adapter # 3 Physikalische Adresse . . . . . . : 80-1F-02-61-C0-A6 DHCP aktiviert. . . . . . . . . . : Ja Autokonfiguration aktiviert . . . : Ja Drahtlos-LAN-Adapter Drahtlosnetzwerkverbindung 4: Verbindungsspezifisches DNS-Suffix: Beschreibung. . . . . . . . . . . : Edimax 802.11n Wireless Adapter Physikalische Adresse . . . . . . : 80-1F-02-61-C0-A6 DHCP aktiviert. . . . . . . . . . : Ja Autokonfiguration aktiviert . . . : Ja Verbindungslokale IPv6-Adresse . : fe80::38d2:f489:726d:1fb5%17(Bevorzugt) IPv4-Adresse . . . . . . . . . . : 192.168.1.41(Bevorzugt) Subnetzmaske . . . . . . . . . . : 255.255.255.0 Lease erhalten. . . . . . . . . . : Donnerstag, 15. November 2012 10:51:05 Lease läuft ab. . . . . . . . . . : Sonntag, 18. November 2012 10:51:18 Standardgateway . . . . . . . . . : 192.168.1.1 DHCP-Server . . . . . . . . . . . : 192.168.1.1 DHCPv6-IAID . . . . . . . . . . . : 578821890 DHCPv6-Client-DUID. . . . . . . . : 00-01-00-01-17-FF-D5-FE-BC-5F-F4-48-FC-4B DNS-Server . . . . . . . . . . . : 91.233.182.2 194.230.1.39 NetBIOS über TCP/IP . . . . . . . : Aktiviert Tunneladapter isatap.{263BEB98-344B-435C-888F-1B15B97C3AC1}: Medienstatus. . . . . . . . . . . : Medium getrennt Verbindungsspezifisches DNS-Suffix: Beschreibung. . . . . . . . . . . : Microsoft-ISATAP-Adapter Physikalische Adresse . . . . . . : 00-00-00-00-00-00-00-E0 DHCP aktiviert. . . . . . . . . . : Nein Autokonfiguration aktiviert . . . : Ja Tunneladapter Teredo Tunneling Pseudo-Interface: Verbindungsspezifisches DNS-Suffix: Beschreibung. . . . . . . . . . . : Teredo Tunneling Pseudo-Interface Physikalische Adresse . . . . . . : 00-00-00-00-00-00-00-E0 DHCP aktiviert. . . . . . . . . . : Nein Autokonfiguration aktiviert . . . : Ja IPv6-Adresse. . . . . . . . . . . : 2001:0:9d38:6ab8:209c:2944:3f57:fed6(Bevo rzugt) Verbindungslokale IPv6-Adresse . : fe80::209c:2944:3f57:fed6%11(Bevorzugt) Standardgateway . . . . . . . . . : :: NetBIOS über TCP/IP . . . . . . . : Deaktiviert C:\Users\xyz>ping 192.168.1.1 Ping wird ausgeführt für 192.168.1.1 mit 32 Bytes Daten: Antwort von 192.168.1.1: Bytes=32 Zeit=2ms TTL=254 Antwort von 192.168.1.1: Bytes=32 Zeit=2ms TTL=254 Antwort von 192.168.1.1: Bytes=32 Zeit=2ms TTL=254 Antwort von 192.168.1.1: Bytes=32 Zeit=2ms TTL=254 Ping-Statistik für 192.168.1.1: Pakete: Gesendet = 4, Empfangen = 4, Verloren = 0 (0% Verlust), Ca. Zeitangaben in Millisek.: Minimum = 2ms, Maximum = 2ms, Mittelwert = 2ms

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  • Lead, Follow, or Get out of the way

    - by Daniel Moth
    This is one of the sayings (attributed to Thomas Paine) that totally resonated with me from the first time I heard it, which was only 3 years ago during some training course at work: "Lead, Follow, or Get out of the way" You'll find many books with this title and you'll find it quoted by politicians and other leaders in various countries at various times... the quote is open to interpretation and works on many levels. To set the tone of what this means to me, I'll use a simple micro example: In any given conversation, you are either leading it or following it, at different times/snapshots of the conversation. If you are not willing or able to lead it, and you are not willing or able to follow it, then you should depart. The bad alternative which this guidance encourages you NOT to do is to stick around and obstruct progress by not following, not leading, and simply complaining or trying to derail the discussion in no particular direction. The same pattern applies at your position/role at work. Either follow your management/leadership team, or try to lead them to what you think is a better place, or change jobs. Don't stick around complaining about the direction things are going, while not actively trying to either change things or make peace with it. In the previous paragraph you can replace the word "your management" with "the people reporting to you" and the guidance still holds. Either lead your direct reports to where you think they should go, or follow their lead, or change jobs. Complaining about folks not taking direction while doing nothing is not a maintainable state. To me this quote is not about a permanent state, it is not about some people always leading and some always following: It is about a role/hat that anybody can play/wear at any given moment. One minute I am leading you, the next I am following you, and the next we are both following someone else and so on... When there is disagreement, debate the different directions for as long as it takes for you to be comfortable that you can either follow or lead. If you don't become comfortable with either of those, get out of the way. Something to remember is that it is impossible to learn how to lead well, without learning how to follow well (probably deserves its own blog entry)... Things go wrong when someone thinks that they must always be leading, or when everybody wants to follow and nobody steps up to lead... Things go wrong when more than one person wants to lead and they don't try to reach agreement on a shared direction, stubbornly sticking to their guns pulling the rest of the team in multiple directions... Things go wrong when more than one person wants to lead and after numerous and lengthy discussions, none of them decides to follow or get out of the way... Things go wrong when people don't want to lead, don't want to follow, and insist on sticking around... While there are a few ways things that can go wrong as enumerated in the previous paragraph, the most common one in my experience is the last one I mentioned. You'll recognize these folks as the ones that always complain about everything that is wrong with their company/product but do nothing about it. Every time you hear someone giving feedback on how something is wrong or suboptimal, ask them "So now that you identified the problem, what do you think the solution is and what are you doing to drive us to that solution?" The next time things start going wrong, step up and remind everyone: Lead, Follow, or Get out of the way. For more perspectives, and for input to help you form your own interpretation, search the web for this phrase to see in what contexts it is being used (bing, google). Finally, regardless of your political views, I hope you can appreciate if only as an example this perspective of someone leading by actually getting out of the way. Comments about this post by Daniel Moth welcome at the original blog.

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  • How to get faster graphics in KVM? VNC is painfully slow with Haiku OS guest, Spice won't install and SDL doesn't work

    - by Don Quixote
    I've been coming up to speed on the Haiku operating system, an Open Source clone of BeOS 5 Pro. I'm using an Apple MacBook Pro as my development machine. Apple's BootCamp BIOS does not support more than four partitions on the internal hard drive. While I can set up extended and logical partitions, doing so will prevent any of the installed operating systems from booting. To run Haiku directly on the iron, I boot it off a USB stick. Using external storage is also helpful because I am perpetually out of filesystem space. While VirtualBox is documented to allow access to physical drives, I could not actually get it to work. Also VirtualBox can only use one of the host CPU's cores. While VB guests can be configured for more than one CPU, they are only emulated. A full build of the Haiku OS takes 4.5 under VB. I had the hope of reducing build times by using KVM instead, but it's not working nearly as well as VirtualBox did. The Linux Kernel Virtual Machine is broken in all manner of fundamental ways as seen from Haiku. But I'm a coder; maybe I could contribute to fixing some of those problems. The first problem I've got is that Haiku's video in virt-manager is quite painfully slow. When I drag Haiku windows around the desktop, they lag quite far behind where my mouse is. It's quite difficult to move a window to a precise position on the screen. Just imagine that the mouse was connected to the window title bar with a really stretchy spring. Also Haiku's mouse lags quite far behind where I have moved it. I found lots of Personal Package Archives that enable Spice from QEMU / KVM at the Ubuntu Personal Package Arhives. I tried a few of the PPAs but none of them worked; with one of them, the command "add-apt-repository" crashed with a traceback. There is a Wiki page about Spice, but it says that it only works on 64-bit. My Early 2006 MacBook Pro is 32-bit. Its Apple Model Identifier is MacBookPro1,1; these use Core Duos NOT Core 2 Duos. I don't mind building a source deb for 32-bit if I can expect it to work. Is there some reason that Spice should be 64-bit only? Does it need features of the x86_64 Instruction Set Architecture that x86 does not have? When I try using SDL from virt-manager, the configuration for Local SDL Window says "Xauth: /home/mike/.Xauthority". When I try to start my guest, virt-manager emits an error. When I Googled the error message, the usual solution was to make ~/.Xauthority readible. However, .Xauthorty does not exist in my home directory. Instead I have a $XAUTHORITY environment variable. There is no way to configure SDL in virt-manager to use $XAUTHORITY instead of ~/.Xauthority. Neither does it work to copy the value of $XAUTHORITY into the file. I am ready to scream, because I've been five fscking days trying to make KVM work for Haiku development. There is a whole lot more that is broken than the slow video. All I really want to do for now is speed up my full builds of Haiku by using "jam -j2" to use both cores in my CPU. I may try Xen next, but the last time I monkeyed with Xen it was far, far more broken than I am finding KVM to be. Just for now, I would be satisfied if there were some way to use my USB stick as a drive in VirtualBox. VB does allow me to configure /dev/sdb as a drive, but it always causes a fatal error when I try to launch the guest. Thank You For Any Advice You Can Give Me. -

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  • Viewport / Camera Calculation in 2D Game

    - by Dave
    we have a 2D game with some sprites and tiles and some kind of camera/viewport, that "moves" around the scene. so far so good, if we wouldn't had some special behaviour for your camera/viewport translation. normally you could stick the camera to your player figure and center it, resulting in a very cheap, undergraduate, translation equation, like : vec_translation -/+= speed (depending in what keys are pressed. WASD as default.) buuuuuuuuuut, we want our player figure be able to actually reach the bounds, when the viewport/camera has reached a maximum translation. we came up with the following solution (only keys a and d are the shown here, the rest is just adaption of calculation or maybe YOUR super-cool and elegant solution :) ): if(keys[A]) { playerX -= speed; if(playerScreenX <= width / 2 && tx < 0) { playerScreenX = width / 2; tx += speed; } else if(playerScreenX <= width / 2 && (tx) >= 0) { playerScreenX -= speed; tx = 0; if(playerScreenX < 0) playerScreenX = 0; } else if(playerScreenX >= width / 2 && (tx) < 0) { playerScreenX -= speed; } } if(keys[D]) { playerX += speed; if(playerScreenX >= width / 2 && (-tx + width) < sceneWidth) { playerScreenX = width / 2; tx -= speed; } if(playerScreenX >= width / 2 && (-tx + width) >= sceneWidth) { playerScreenX += speed; tx = -(sceneWidth - width); if(playerScreenX >= width - player.width) playerScreenX = width - player.width; } if(playerScreenX <= width / 2 && (-tx + width) < sceneWidth) { playerScreenX += speed; } } i think the code is rather self explaining: keys is a flag container for currently active keys, playerX/-Y is the position of the player according to world origin, tx/ty are the translation components vital to background / npc / item offset calculation, playerOnScreenX/-Y is the actual position of the player figure (sprite) on screen and width/height are the dimensions of the camera/viewport. this all looks quite nice and works well, but there is a very small and nasty calculation error, which in turn sums up to some visible effect. let's consider following piece of code: if(playerScreenX <= width / 2 && tx < 0) { playerScreenX = width / 2; tx += speed; } it can be translated into plain english as : if the x position of your player figure on screen is less or equal the half of your display / camera / viewport size AND there is enough space left LEFT of your viewport/camera then set players x position on screen to width half, increase translation (because we subtract the translation from something we want to move). easy, right?! doing this will create a small delta between playerX and playerScreenX. after so much talking, my question appears now here at the bottom of this document: how do I stick the calculation of my player-on-screen to the actual position of the player AND having a viewport that is not always centered aroung the players figure? here is a small test-case in processing: http://pastebin.com/bFaTauaa thank you for reading until now and thank you in advance for probably answering my question.

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  • glm matrix conversion for DirectX

    - by niktehpui
    For on of the coursework specification I need to work with DirectX, so I tried to implement a DirectX Renderer in my small cross-platform framework (to have it optionally available for Windows). Since I want to stick to my dependencies I want use glm for vector/matrix/quaternions math. The vectors seem to be fully compatible with DirectX, but the glm::mat4 is not working properly in DirectX Effects Framework. I assumed the reason is that DirectX uses row majors layouts and OpenGL column majors (although if I remember right internally in HLSL DX uses column major as well), so I transposed the matrix, but I still get no proper results compared to using XNA-Math. XNA-Version of the code (works): XMMATRIX world = XMMatrixIdentity(); XMMATRIX view = XMMatrixLookAtLH(XMVectorSet(5.0, 5.0, 5.0, 1.0f), XMVectorZero(), XMVectorSet(0.0f, 1.0f, 0.0f, 0.0f)); XMMATRIX proj = XMMatrixPerspectiveFovLH(0.25f*3.14f, 1.25f, 1.0f, 1000.0f); XMMATRIX worldViewProj = world*view*proj; m_fxWorldViewProj->SetMatrix(reinterpret_cast<float*>(&worldViewProj)); This works flawlessly and displays the expected colored cube. GLM-Version (does not work): glm::mat4 world(1.0f); glm::mat4 view = glm::lookAt(glm::vec3(5.0f, 5.0f, 5.0f), glm::vec3(0.0f, 0.0f, 0.0f), glm::vec3(0.0f, 1.0f, 0.0f)); glm::mat4 proj = glm::perspective(0.25f*3.14f, 1.25f, 1.0f, 1000.0f); glm::mat4 worldViewProj = glm::transpose(world*view*proj); m_fxWorldViewProj->SetMatrix(glm::value_ptr(worldViewProj)); Displays nothing, screen stays black. I really would like to stick to glm on all platforms.

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  • Best practices for class-mapping with SoapClient

    - by Foofy
    Using SoapClient's class mapping feature and it's pretty sweet. Unfortunately the SOAP service we're using has a bunch of read-only properties on some of the objects and will throw faults if the properties are passed back as anything but null. Need to filter out the properties before they're used in the SOAP call and am looking for advice on the best way to do it. So far the options are: Stick to a convention where I use getter and setter functions to manipulate the properties, and use property overloading to filter method access since only SoapClient would be doing that. E.g. developers would access properties like this: $obj->getAccountNumber() SoapClient would access properties like this: $obj->accountNumber I don't like this because the properties are still exposed and things could go wrong if developers don't stick to convention. Have a wrapper for SoapClient that sets a public property the mapped objects can check to see if the property is being accessed by SoapClient. I already have a wrapper that assigns a reference to itself to all the mapped objects. class SoapClientWrapper { public function __soapCall($method, $args) { $this->setSoapMode(true); $this->_soapClient->__soapCall($method, $args); $this->setSoapMode(false); } } class Invoice { function __get($val) { if($this->_soapClient->getSoapMode()) { return null; } else { return $this->$val; } } } This works but it doesn't feel right and seems a bit clunky. Do the mapping manually, and don't use SoapClient's mapping features. I'd just have a function on all the mapped objects that returns the safe-to-send properties. Also, nobody would have access to properties they shouldn't since I could enforce getters and setters. A lot more work, though.

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  • Resizing video best practices (frame size)

    - by undefined
    I have read the following which is from Best Practices for Encoding Video with the VP6 Codec on the Adobe website here - http://www.adobe.com/devnet/flash/articles/encoding_video_print.html. It is talking about common video ratios (320x240, 640x480) Although these ratios are standard, and should be used to avoid distorting the video, the size of the encoded video is not set in stone. The original web video sizes used heights and widths that were evenly divisible by 16. This was mandatory for many early codecs. Although this is not necessary for modern codecs, you should stick to even heights and widths. What do they mean by 'even heights and widths'. I am thinking about encoding my video at 400x300 to make it slightly bigger, this is still 4x3 format but should I just stick at 320x240 and resize it on the screen? Clearly there are benefits to this in terms of storage size and delivery costs. In some places on my site I want to show the video at 400x300 but in others I want it to play full screen so this is why I am wondering if a larger original size (400x300) will give better results when blown up. Any thoughts?

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  • ASP.NET MVC and NHibernate coupling

    - by Ben
    I have just started learning NHibernate. Over the past few months I have been using IoC / DI (structuremap) and the repository pattern and it has made my applications much more loosely coupled and easier to test. When switching my persistence layer to NHibernate I decided to stick with my repositories. Currently I am creating a new session on each method call but of course this means that I can not benefit from lazy loading. Therefore I wish to implement session-per-request but in doing so this will make my web project dependent on NHibernate (perhaps this is not such a bad thing?). I was planning to inject ISession into my repositories and create and dispose sessions on beginrequest/endrequest events (see http://ayende.com/Blog/archive/2009/08/05/do-you-need-a-framework.aspx) Is this a good approach? Presumably I cannot use session-per-request without having a reference to NHibernate in my web project? Having the web project dependent on NHibernate prompts my next (few) questions - why even bother with the repository? Since my web app is calling services that talk to the repositories, why not ditch the repositories and just add my NHibernate persistance code inside the services? And finally, is there really any need to split out into so many projects. Is a web project and an infrastructure project sufficient? I realise that I have veered off a bit from my original question but it seems that everyone seems to have their own opinion on these topics. Some people use the repository pattern with NHibernate, some don't. Some people stick their mapping files with the related classes, others have a separate project for this. Many thanks, Ben

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  • Select all points in a matrix within 30m of another point

    - by pinnacler
    So if you look at my other posts, it's no surprise I'm building a robot that can collect data in a forest, and stick it on a map. We have algorithms that can detect tree centers and trunk diameters and can stick them on a cartesian XY plane. We're planning to use certain 'key' trees as natural landmarks for localizing the robot, using triangulation and trilateration among other methods, but programming this and keeping data straight and efficient is getting difficult using just Matlab. Is there a technique for sub-setting an array or matrix of points? Say I have 1000 trees stored over 1km (1000m), is there a way to say, select only points within 30m radius of my current location and work only with those? I would just use a GIS, but I'm doing this in Matlab and I'm unaware of any GIS plugins for Matlab. I forgot to mention, this code is going online, meaning it's going on a robot for real-time execution. I don't know if, as the map grows to several miles, using a different data structure will help or if calculating every distance to a random point is what a spatial database is going to do anyway. I'm thinking of mirroring two arrays, one sorted by X and the other by Y. Then bubble sorting to determine the 30m range in that. I do the same for both arrays, X and Y, and then have a third cross link table that will select the individual values. But I don't know, what that's called, how to program that and I'm sure someone already has so I don't want to reinvent the wheel. Cartesian Plane GIS

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  • JTA or LOCAL transactions in JPA2+Hibernate 3.6.0?

    - by Pangea
    We are in the process of re-thinking our tech stack and below are our choices (We can't live without Spring and Hibernate due to the complexity etc of the app). We are also moving from J2EE 1.4 to JEE 5. Tech stack JEE 5 JPA 2.0 (I know JEE 5 only supports JPA 1.0 but we want to use Hibernate as the JPA provider) Hibernate 3.6.0 (We already have lots of hbm files with custom types etc. so we doesn't want to migrate them at this time to JPA. This means we want both jpa/hbm mappings work together and hence the Hibernate as the JPA provider instead of using the default that comes with App Server) Now the problems is that I want to stick with local transactions but other team members want to use JTA. I have been working with J2EE for last 9 years and I've heard time and again people suggesting to stick with local transactions if I doesn't need two phase commits. This is not only for performance reasons but debugging/troubleshooting a local transaction is lot easier than a distributed transaction. My suggestion is to use spring declarative transaction management + local transactions (HibernateTransactionManager) I want to make sure if I am being paranoid or I have a valid point. I'd like to hear what the rest of the JEE world thinks. Thank you.

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  • Is there any reason to use C instead of C++ for embedded development?

    - by Piotr Czapla
    Question I have two compilers on my hardware C++ and C89 I'm thinking about using C++ with classes but without polymorphism (to avoid vtables). The main reasons I’d like to use C++ are: I prefer to use “inline” functions instead of macro definitions. I’d like to use namespaces as I prefixes clutter the code. I see C++ a bit type safer mainly because of templates, and verbose casting. I really like overloaded functions and constructors (used for automatic casting). Do you see any reason to stick with C89 when developing for very limited hardware (4kb of RAM)? Conclusion Thank you for your answers, they were really helpful! I though the subject through and I will stick with C mainly because: It is easier to predict actual code in C and this is really important if you have only 4kb of ram. My team consists of C developers mainly so advance features of C++ won't be frequently used. I've found a way to inline functions in my C compiler (C89). It is hard to accept one answer as you provided so many good answers. Unfortunately I can't create a wiki and accept it so I will choose one answer that made me think most.

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