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• Linux: can't downgrade ATI graphic driver

  - by java.is.for.desktop

  I had the old 10.9 driver of ATI, it worked fine. Sadly, I decided to upgrade it to the new 10.12. After that, HDMI stopped working. So, I want to downgrade back to 10.9. I did everything by the book. But it fails: As root, I do: cd /usr/share/ati sh ./fglrx-uninstall.sh Yes, the uninstall process tells me that everything is fine uninstalled. And after doing reboot, I have the default opensource ATI driver which comes with X11 (or the kernel?). The ATI control panel shortcut points to nowhere. So, the driver seems uninstalled. Now I install the older (10.9) proprietary ATI driver. It also finishes successfully. But after reboot, the ATI control panel tells me that I still have 10.12. And it seems to be true, because HDMI doesn't work. So, how can I completely purge the new non-working driver and downgrade to the old one?

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• Is there a historical computer peripherals or accessories museum or even just a current list?

  - by zimmer62

  Thinking about all the unique and different peripherals I've owned over the years, from ISA capture cards, to parallel port controlled shutter glasses for 3d games. I've seen many many accessory or computer peripherals come and go. The nostalgia of these things is a lot of fun. I tried to find some sort of historical time-line or list but what mostly turned up is computers themselves. I'm more interested in the mice, scanners, the weird adapters that shouldn't exist, short run very rare products, strange devices from computer shows in the 80's and 90's... Hardware you might find in a geeks basement that would be completely useless now, but was the coolest thing around when it was new. An example would be a drawing tablet I had for my TI-99 computer, or the audio tape player accessory for a C64 which let you save files to audio tapes, An ISA card that did the same for PC's hooked up to a VCR. Remember that IBM-PC Jr upgrade kit, that added a floppy drive, more memory and the AT switch in the back? I'd love to find either a wiki, or a list that has already been assembled which contain many of these weird (or common) accessories. I've had so many over the years I suppose I could start a wiki here if such a list doesn't already exist.

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• Is there a screen sharing/remote desktop app for mac that lets you use a different host screen resolution?

  - by MarqueIV

  Ok, there are tons and tons of questions about remote desktop for mac and they're all being closed as duplicates. I however am specifically looking for one that will let me use a different resolution than the host, the way you can with Remote Desktop for Windows. For instance, when I connect to my 11" Macbook Air booted into Windows7 from my quad-screen desktop, also booted into Win7 using Microsoft's Remote Desktop Client, it blanks out the screen on the notebook, then virtualizes the video across all four of my desktop's monitors at their native resolutions (2560x1600, 2 x 1920x1200 and 1600x1200) and the notebook now acts as if it has four physical monitors connected to it. All of this from a notebook that only has a 1366 x 768 native resolution. Even when running OS X on the client running RDC, while it doesn't support multi-monitors like its Win counterpart, it still lets me run at the native resolution of the client screen of 2560x1600. Again, it just blanks out the host screen while doing so. However when using Mac's screen sharing, since that is just glorified VNC, it just mirrors what's already on the host's screen, meaning it will always be a single screen with the resolution of 1366x768. This of course makes sense since VNC is a mirroring solution, not a video-virtualizing one like RDC, but it means that on my quad-monitor setup, the remote window isn't even large enough to fill up a single monitor, let alone four (unless you have a client that can scale it up, but that's video scaling. It's still only 1366x768.) So what I'm looking for is if there is a solution on the Mac that lets me do the same thing as RDC in a Win environment. Don't care if I have to pay. I'd gladly pay several hundred dollars for this. I just need that specific feature. Note: People have suggested various VNC clients, but the VNC host still runs at 1366x768 so that will not work here. Ever. Also, people have suggested Synergy/Synergy+/Teleport and such which share the keyboard and mouse, not video. Completely different animal unrelated to what I'm looking for.

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• SVN checkout returns 400 error

  - by eboix

  I'm trying to download the http://code.opencv.org/svn/opencv/trunk/ repository of all of the OpenCV source code - as specified in an OpenCV installation tutorial. In the tutorial, the repository https://code.ros.org/svn/opencv/trunk/ is used, but they moved it to http://code.opencv.org/svn/opencv/trunk/, and now you need a password to access the code.ros.org repository. Anyway, I'm using TortoiseSVN to download the SVN repository. (I get the same error with http://sourceforge.net/projects/win32svn/) I get this: Checkout from http://code.opencv.org/svn/opencv/trunk, revision HEAD, Fully recursive, Externals included Server sent unexpected return value (400 Bad request. Method Unknown) in response to REPORT request for '/svn/opencv/!svn/vcc/default' On the TortoiseSVN site I found something about this 400 error: You're behind a firewall which blocks DAV requests. Most firewalls do that. Either ask your Administrator to change the firewall, or access the repository with https:// instead of http:// like in https://svn.collab.net/repos/svn/ That way you connect to the repository with SSL encryption, which firewalls can't interfere with (if they don't block the SSL port completely). Also some virus scanners (i.e. Kapersky) are known to interfere and cause this error. The code.ros.org repository is https://, so I would be able to access it, but I need a password, so I can't. I made an account on ros.org, but it seems that I still need a password (which I don't know) to access the code repository. My username-password combination does not work. I unblocked all of the TortoiseSVN programs in my firewall settings. Nothing changed. I temporarily stopped my firewall to see if it was interfering with my request. I got the same error. How can I do an svn checkout http://code.opencv.org/svn/opencv/trunk/opencv/ so that I don't get this error? Is there any way to make it https://? Any help would be appreciated!

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• Printing from Firefox on different printers and setting the page details beforehand

  - by user1162541

  I´ve got an odd problem and I have not been able to fix this. I have a computer which is connected to two printers. One is a receipt printer (EPSON TM-U220), and the other one is an impact printer (Epson LX-300+). From Firefox, I need to print on both printers at different moments. So first I print on the receipt printer, then on the impact printer, etc. However, whenever I first print on the receipt printer, and then go back to the impact printer, the printout is only the width of the page of the receipt printer. That is, the page does not come out properly, just the left part of the page is used for printing and the right part is completely empty, as if I am just printing on the small receipt paper. And there is no way I can tell Firefox that I am printing on this larger printer. The second print on the impact printer goes fine. Firefox now knows it is printing on the impact printer, and it comes out properly on the full page width. But every first print on the impact printer is using the wrong paper size. How can I fix this? When I go to PAGE PREVIEW I can not set the printer UNTIL I actually print the page. If I go to PRINT PREVIEW CONFIGURE PAGE, I can not set the printer I will be using. I can only do so if I go to PRINT PREVIEW PRINT (here is the dropdown box to set the printer). But I can only set the printer and then click PRINT, or CANCEL. If I click PRINT, then the computer remembers the setting but that page will come our wrong, and when I click cancel it simply does not remember the printer I just set.

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• Bad Mumble control channel performance in KVM guest

  - by aef

  I'm running a Mumble server (Murmur) on a Debian Wheezy Beta 4 KVM guest which runs on a Debian Wheezy Beta 4 KVM hypervisor. The guest machines are attached to a bridge device on the hypervisor system through Virtio network interfaces. The Hypervisor is attached to a 100Mbit/s uplink and does IP-routing between the guest machines and the remaining Internet. In this setup we're experiencing a clearly recognizable lag between double-clicking a channel in the client and the channel joining action happening. This happens with a lot of different clients between 1.2.3 and 1.2.4 on Linux and Windows systems. Voice quality and latency seems to be completely unaffected by this. Most of the times the client's information dialog states a 16ms latency for both the voice and control channel. The deviation for the control channels mostly is a lot higher than the one of the voice channels. In some situations the control channel is displayed with a 100ms ping and about 1000 deviation. It seems the TCP performance is a problem here. We had no problems on an earlier setup which was in principle quite like the new one. We used Debian Lenny based Xen hypervisor and a soft-virtualised guest machine instead and an earlier version of the Mumble 1.2.3 series. The current murmurd --version says: 1.2.3-349-g315b5f5-2.1

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• HP Photosmart C4780 printer/scanner breaks netgear WNDR3700v3 router on connection

  - by CodeJunkie

  A few months ago, we upgraded our Netgear router's firmware. Immediately, we started having trouble connecting to the internet. Each time this problem would happen, every device in the house would stop being able to make new connections to the internet. For example, you couldn't open new pages in the browser, but if Skype was running when the problem happened, you could keep talking to people. The only solution to this problem seemed to be resetting the router to factory defaults. Eventually, we solved this problem by just downgrading the router firmware. A while later, we got a new Netgear router. Almost right away, the new router started having exactly the same problems as the old one did on current firmware. The network connection would stay active and the computer would say it had an internet connection, but you couldn't do anything online except for using Skype. We eventually figured out that this happens every time our HP printer gets onto the network. Any time the printer gets onto the wireless network, the whole network stops connecting to the internet almost completely. The only thing that will fix it at that point is to reset the router to factory specs, and unplug the printer so it can't get back onto the network. The Netgear router has the latest version of the firmware, but the printer/scanner is very old. It looks to me like this problem is probably a result of a firmware conflict between the printer and the router, but I'm not sure how to fix that problem. Here's some additional information: Printer: HP Photosmart C4780 Router: WNDR3700v3 Router firmware: V1.0.0.22_1.0.17 (Stock, up to date firmware) Why would the printer getting on the network cause the router to not be able to access the internet correctly until it was reset? What can be done to allow the printer to be on the network without breaking the network for all other devices? Edit: One other thing that happens during this internet problem is that multiple computers in the house display an "IP conflict" message repeatedly, and extremely frequently (as often as every five to ten minutes, and every time a connection to the wireless is made).

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• VLAN ACLs and when to go Layer 3

  - by wuckachucka

  I want to: a) segment several departments into VLANs with the hopes of restricting access between them completely (Sales never needs to talk to Support's workstations or printers and vice-versa) or b) certain IP addresses and TCP/UDP ports across VLANS -- i.e. permitting the Sales VLAN to access the CRM Web Server in the Server VLAN on port 443 only. Port-wise, I'll need a 48-port switch and another 24-port switch to go with the two existing 24-port Layer 2 switches (Linksys); I'm looking at going with D-Links or HP Procurves as Cisco is out of our price range. Question #1: From what I understand (and please correct me if I'm wrong), if the Servers (VLAN10) and Sales (VLAN20) are all on the same 48-port switch (or two stacked 24-port switches), afaik, the switch "knows" what VLANs and ports each device belongs to and will switch packets between them; I can also apply ACLs to restrict access between VLANs at this point. Is this correct? Question #2: Now lets say that Support (VLAN30) is on a different switch (one of the Linksys) switches. I'm assuming I'll need to trunk (tag) switch #2's VLANs across to switch #1, so switch #1 sees switch #2's VLAN30 (and vice-versa). Once Switch #1 can "see" VLAN30, I'm assuming I can then apply ACLs as stated in Question #1. Is this correct? Question #3: Once Switch #1 can see all the VLANs, can I achieve the seemingly "Layer 3" ACL filtering of restricting access to Server VLAN on only certain TCP/UDP ports and IP addresses (say, only permitting 3389 to the Terminal Server, 192.168.10.4/32). I say "seemingly" because some of the Layer 2 switches mention the ability to restrict ports and IP addresses through the ACLs; I (perhaps mistakenly) thought that in order to have Layer 3 ACLs (packet filtering), I'd need to have at least one Layer 3 switch acting as a core router. If my assumptions are incorrect, at which point do you need a Layer 3 switch for inter-VLAN routing vs. inter-VLAN switching? Is it generally only when you need that higher-level packet filtering ability between your departments?

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• Aging SBS needs updates / Thoughts for one-off, off-line complete backup?

  - by tcv

  Hey guys, So, we checked out the status of an SBS 2003 at one of our more recent, spend-averse clients and found it to be woefully out-of-date. Scary out of date. I think it's running IE2. Ok, maybe not that far back. Anyway, I was thinking that I could use some kind of disk-imaging software to image the four IDE drives within and, in the event the server gets some kind of Update Induced Indigestion, I could completely restore. Usually my go-to software for this is Acronis, but my client will likely balk at a $500 price tag for a one-off backup with their server product. I had thought we could use the boot media from, say, Backup & Recovery 10 to take an off-line image of all the drives. According to their CHAT tech support, however, it will not work. I pressed for the technical reasons and they said they'd email me. They haven't emailed me. They still might. This server is running SBS 2003, pre sp2. It's got four IDE disks. One is a Basic disk, which contains the O/S. The others are bound as a dynamic disk. You might ask: "Don't they already have backup software?" They do! Backup Exec, a very low-end version that won't even do VSS. I don't know much about BE, but it seems to me that if the worst were to happen, it would mean building a new server O/S, installing BE (if the media is available), then restoring. Would it even work? I can take the system down for hours to do a backup and my goal here is a pretty dead-simple restore if the worst happens. Any and all suggestions are exciting. m

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• Why are certain folders in my XP network share really, really slow?

  - by bikefixxer

  I have a workgroup set up with Windows XP. My file "server" is running XP Pro and the clients are running XP home. I've turned simple file sharing off on the server because certain clients need access to certain folders and not to others, and I want to keep it that way. Therefore, I've used the granular sharing/security settings to enable certain clients access to certain folders. I'm using the net use command in a batch file on the clients to add the share when they logon so it's always available via a mapped drive or a shortcut. On some clients "My Documents" points to the mapped drive, but all of the local and application settings stay local. Everything works well except for accessing a certain folder on the network. It contains a lot of random batch files and self-executable programs I use for diagnostics and what not, and nearly every time I open the folder the computer hangs for 15-60 seconds. This happens on every machine, including the server (but not nearly as often as the clients). I've searched high and low and cannot figure it out and it's driving me crazy. Here are all the things I've tried to no avail: Disabled firewall (XP) and anti-virus (ESET NOD32) Deleted any desktop.ini file I can find in the share Disabled "automatically search for network folders and printers" Disabled "remember each folder's view settings" Set HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer NoRecentDocsNetHood = 1 Tried with mapped drives and with UNC shortcuts Ran CHKDSK Removed Read-Only attribute from all folders (well, tried to remove, it always came back on with a half check) Added the server's static IP to the hosts file on the clients I've tried monitoring the server's performance to see if anything makes sense. Occasionally the issue coincides with a spike in pages/sec (memory) but not always. Other than that, everything else seems normal. The anti-virus would seem to be the most likely cause to me considering the batch files and what not, but it still hangs when it is completely disabled. I'm at a loss and if anyone can help me with this I'd greatly appreciate it!

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• Should I embed the sRGB color profile in JPEG files?

  - by basic6

  I have a large (growing) collection of scanned images. They are TIFF files, mostly 48 bit with the Adobe RGB color space. This color profile is integrated in the files. When such a file is opened in IrfanView (with plugins), it says (Image - Information) Adobe RGB 1998. "Normal images", like the JPG files from a digital camera, do not (necessarily) have a color profile integrated in the file. I understand that it's necessary to include the Adobe RGB profile in an image file which uses the Adobe RGB space, so the color values can be interpreted correctly. Here's a test image with a completely different color profile, programs that ignore the included profile (like MSIE8 or Gwenview) will render it as sRGB (?): I'm planning to convert my TIF files to JPG, so I'm wondering if there's anything wrong with using IrfanView that would save them as sRGB without embedding the sRGB profile. I've heard that images should always be saved with the color profile included. Since every image seems to be interpreted as sRGB by default (by software without color management), I don't understand why the sRGB profile should be included?

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• Mounting any Windows share from OS X 10.7.5 suddenly stopped working

  - by user2169619

  I have problem with mounting Windows network shares from my OS X 10.7.5 - it worked but it stopped and nothing helps and nothing in logs. Here what I get when trying to mount it manually: mount -t smbfs //10.0.0.7/d /tmp/test When doing sniffing with tshark - no packet it sent through and I get immediately return from the command: mount_smbfs: server connection failed: Unknown error: -1 Nothing in /var/log/syslog.log and /var/log/kern.log. The Finder does not work either - it throws an error that something is wrong (in czech thus I'm not sending the message here). I just cannot connect to any network shares. In virtual Windows 7 in Parallels Desktop I can connect successfully, but not within the network share (so the Win7 is behind OS X NAT) but only with its own IP address. The Windows server share is on the same network segment connected through switch. Any advice how to debug and what can be wrong? I spent hours to find solution on Google and here but no-one with this kind of problem and I do not know how to further debug it since there is no meaningful log / trace etc. I can ping 10.0.0.7 and I can connect to FTP server on 10.0.0.7 - the Windows machine (XP) has firewall completely turned off. The problem is that with tshark, I'm not seeing any packet sending to 10.0.0.7 so it's not even trying to reach the server.

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• User authentication -- username mismatch in IIS in ASP.NET application

  - by Cory Larson

  Last week, an employee's Active Directory username was changed (or a new one was created for them). For the purposes of this example, let's assume these usernames: Old: Domain\11111 New: Domain\22222 When this user now logs in using their new username, and attempts to browse to any one of a number of ASP.NET applications using only Windows Authentication (no Anonymous enabled), the system authenticates but our next layer of database-driven permissions prevents them from being authorized. We tracked it down to a mismatch of usernames between their logon account and who IIS thinks they are. Below are the outputs of several ASP.NET variables from apps running in a Windows 2008 IIS7.5 environment: Request.ServerVariables["AUTH_TYPE"]: Negotiate Request.ServerVariables["AUTH_USER"]: Domain\11111 Request.ServerVariables["LOGON_USER"]: Domain\22222 Request.ServerVariables["REMOTE_USER"]: Domain\11111 HttpContext.Current.User.Identity.Name: Domain\11111 System.Threading.Thread.CurrentPrincipal.Identity.Name: Domain\11111 From the above, I can see that only the LOGON_USER server variable has the correct value, which is the account the user used to log on to their machine. However, we use the "AUTH_USER" variable for looking up the database permissions. In a separate testing environment (completely different server: Windows 2003, IIS6), all of the above variables show "Domain\22222". So this seems to be a server-specific issue, like the credentials are somehow getting cached either on their machine or on the server (the former seems more plausible). So the question is: how do I confirm whether it's the user's machine or the server that is botching the request? How should I go about fixing this? I looked at the following two resources and will be giving the first one a try shortly: http://www.interworks.com/blogs/jvalente/2010/02/02/removing-saved-credentials-passwords-windows-xp-windows-vista-or-windows-7 http://stackoverflow.com/questions/2325005/classic-asp-request-servervariableslogon-user-returning-wrong-username/5299080#5299080 Thanks.

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• Flow of packet in network

  - by user58859

  I can't visualize in my mind the network traffic flow. eg. If there are 15 pc's in a LAN. When packet goes from router to local LAN, do it passes all the computers? Means did it goes to ehernet card of every computer and those computers accept the packet based on their physical address. To which pc the packet will go first? To the nearest to the router? What happen if that first pc captures that packet(though it is not for it)? What happens when a pc broadcast a message? Do it have to generate 14 packets for all the pc's or only one packet reach to all pc's? If it is one packet and captured by first pc, how other pc's can get that? I can't imagine how this traffic is exactly flows? May be my analogy is completely wrong. Can anybody explain me this? Thanks in advance.

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• HTC Diamond Touch sync problem

  - by Anders

  I have a HTC Diamond Touch with all my contacts etc. on it. Did however not use it for 6mo while being abroad. When I start the phone now I realize that the touch screen has stopped working. I have tried restarting, soft resetting, shutting it off etc but the touch just wont follow commands. However, I can manage the phone by buttons so it's not frozen. Hence I can get into the phone and watch contacts but not use it to call etc. The problem is, how do I get my 300 contacts out of the thing!? When I'm plugging in the phone, it lets me choose between "Sync with Outlook" and "Use as storage device". It automatically selects "Use as storage device". Now, I cannot choose to sync it with the buttons. I can not change this option afterwards either. In short, I have a phone with all of my contact data and am completely unable to get that out of it. Any tips/help/suggestions? If possible, preferably one that does not including sending the phone to a hardware workshop for three weeks in order to get it fixed:)

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• Sudden and frequent hangs on desktop computer: mobo or CPU fault?

  - by djechelon

  I have a desktop computer equipped with an ASUS Crosshair 2 Formula and a Phenom x6 3.2GHz CPU. My problem is that often the computer will hang all of a sudden, completely stopping responding. When that occurs, reset key is inoperative and power button turns the computer off but is unable to turn it back on. I have to physically disconnect power cable. The problem can occur anytime, when I'm booting Windows, when I'm logging in, when I'm listening to a song, when I'm browsing Internet, etc. It always occurs after very few minutes of 3D gameplay I thought it was a video card fault. I had 3 8800GTX so I could try all combinations of them: didn't fix I thought it was a RAM problem: I tried running with only a subset of my DDR2 banks but didn't fix. Almost every time I have to reset and reconfigure BIOS (without AHCI, Win7 won't boot, so I need to restore a few things). If I enable AMD Live, Cool&Quiet or other things from CPU configuration menu I'll be sure that the computer won't reach Windows desktop in 99% of cases (it randomly hangs somewhere in the boot process or even in the BIOS POST). Another interesting thing is that during the POST process the computer always takes unusually long time detecting USB devices (LCD POSTer shows USB INIT), and I've also tried disconnecting all USB devices but didn't take less time to POST BIOS revision is 2702, the latest. Today I found a different behaviour once: during boot screen I got a BSOD with error Stop 0x00000101 A clock interrupt was not received on a secondary processor within the allocated time interval, and this is usually related to overclocking, but I never overclocked my CPU. Judging from the description of my problem, hoping someone had the same and fixed, and since I don't have a spare CPU or motherboard for replacement, I'd like to ask if you think this is a problem with faulty CPU or faulty motherboard, and if I can perform additional tests (I mean software tests because of my lack of spare components) to identify the component to replace.

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• How to run Fujitsu P27T-7 LED monitor in its not native resolution and have perfect fonts rendering

  - by Ilia Rostovtsev

  My problem is completely opposite to anything I could find as I need to run my monitor in its NOT native resolution and have perfect font rendering. I recently got myself Ultra HD 2560x1440 27 inch monitor (Fujitsu P27T-7 LED) and I have an issue with this. I would call it personal but I'm afraid it's not as few people already agreed with me. I do programming and the text on UHD is way to small for comfortable usage. I changed the resolution to regular Full HD (1920x1080), it became just right but the text is looking slightly blur now, in comparison to both its natural UHD resolution and/or to my old 23 inch NEC. I am pretty frustrated and not sure what to do and how to make fonts look just as sleek as they should? I can't work in UHD resolution (my vision is 100% perfect), simply if calculated, picture size with Ultra HD (2560x1440) on 27 inch is around 30% smaller than Full HD (1920x1080) on 23 inch. In order to have same font size, if compared with Full HD 23 inch, 27 inch Ultra HD monitor must be around 32 inches in size. If I set my new monitor to regular Full HD 1920x1080, then the fonts' size are just perfect but the quality is not as it's blurry? Could anyone please help me out with an advise of how to solve this problem? Spec: nVidia 560 Ti with DVI-D port on Fedora 20. EDIT 1: Changing fonts doesn't really help as everything else doesn't look the way it should. EDIT 2: The monitor is buzzing on 2560x1440 so badly in case there are lots of lines on the screen, like file listing. If I type ls /usr/bin it makes such nasty irritating sound. When resolution goes to 1920x1080 it's a bit better. Any idea why?

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• Windows 7 64 bit Installation freezes after a while durig the setup

  - by vinz243

  I have a windows 7 32 bits on my computer. Because i have 5 gb of ram (kingston) on my asus M2N motherboard and only 3 were able to be used, I bought W7 x64 and install it. It loads the wizard, but after a while, it freezes, and I have to force reboot. It first crashed while unzipping w7 files, but if I wait a while on the terms page for example, it can crash before, which make me think that it is a matter of time. I remember I had the same issue while booting on Ubuntu x64, it crashed randomly but not load completely. No bip or other messages. Configuration: Software OS (before) W7 x86 Pro New OS : W7 x64 Pro Antivirus : avast (bios verification ?) BIOS 03/27/2008 - v08.00.12 Hardware : Motherboard : Asus M2N Processor : AMD Athlon 64 dualcore @ 2.6 GHZ Memory : 5120 MB ((2 + 2) + (1)) NOTES : I ran a memory test using openSUSE cd, though i have not finished it, it ran. EDIT: I tried not to run the setup but wait, and i get the BSOD : A problem... TL;DW IRQL_NOT_LESS_OR_EQUAL If it is.. TL;DW ***STOP: 0x0000000A (0x0000000000000000,0x0000000000000002, 0x0000000000000001, 0xFFFFF8001A49ED1F)

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• Time Machine vs Source Control?

  - by Blub

  Finally got convinced to start using some kind of version control for my code instead of zipping down a copy of the project at the end of each day. Downloaded Tortoise SVN and used it to create a repository localy on my hdd. I've been using it for 2 days now but I have to say that using it is actually more hassle than just copying the project manually in explorer. Sure, you only store incremental changes but with the cheap disks of today I can't really say that's an argument when you only have small projects. I haven't realy found a quick way to browse the older versions of my files eighter. What I want is an infinite undo that is completely transparent while I code, if I save the file I want a backup. I don't want to check out, check in and don't even get me started on moving files. I haven't tried Time Machine for OS X but it looks like it's exactly what I'm looking for. Does such a program exist for windows? Preferably free and with some kind of tagging-system so I can tag a timestamp when the project is working etc. Maybe should add that I mostly work alone on a single computer. Update: Some of you asked why I want backup. Since I work alone it's mostly to allow me to quickly hack up a solution without worrying that something will screw up.

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• Sending mail results in "Sender address rejected: Domain not found"

  - by user1281413

  The setup: WHM/CPanel CentOS 5 server running Exim and Courier for mail services, and BIND for domain name services. I recently moved servers. The old server was running a HIGHLY similar configuration, and all accounts were ported via WHM. However, the server is unable to send, and sometimes receive email. Errors I am seeing (when I do get an error mail back) state: 450 4.1.8 : Sender address rejected: Domain not found Edit for clarity: this is the error response from remote mail servers. Numerous independent mail servers come back with the same error. (Email address is merely one valid example) My first instinct of course was to check the domain records. However, k-t.org appears to have a valid record (including an MX record), even after running it through domain checks on a completely different server elsewhere and online. Note that the issue appears to happen with all the domains hosted on the server, not just k-t.org I have also ensured that a PTR was created. My Googling has only lead me to people who had fairly basic DNS mistakes, but either I'm blind/dumb (possible, DNS is not my strong suite), or it's something that is a bit more archaic. I've run out of ideas, and I can't seem to find anything that could explain why servers are unable to resolve the domains. There doesn't seem to be anything missing or incorrect.

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• Server 2008 RAID 5 Write Speeds

  - by Solipsism

  I recently configured a RAID 5 partition in Server 2008 with 4 RAID 5 disks. These disks are connected through a SATA expansion card that uses PCIe. This morning, I checked and they had finally finished synchronizing, and so I tried to do some speed tests. Copying off the disks started pretty much fine - speeds began at 125MB/s, then trailed down to about 70MB/s, which I found odd but not worrying. Writing TO the disks however is a completely different story. I attempted to copy some of my VM host ISOs onto the disks (~2-4 GB apiece) and this resulted in speeds of approximately 10MB/s. I tried copying both from a local disk (connected directly to the motherboard) and from another server ththe gigabit network and results were the same. I checked the performance monitor while transferring the files and the only thing that stuck out was that my memory hard faults shot up to 6,000 per minute (spiking around 200/s) by explorer.exe. The system is running 2GB of DDR667 ECC RAM and a quad-core 2.3GHz opteron. Is there anything I can do to fix this performance issue (buy more RAM? move the drives to a faster box?, etc) or am I just screwed so long as I stick to windows.

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• Apache2 doesn't serve PHP-scripts correctly

  - by cmbrnt

  I've run into a problem with my Apache 2.2.16 configuration, running on Debian Squeeze. The problem is that it stopped serving PHP5-scripts completely. When I try to access the sites with Google Chrome, it instead downloads a file called "download", which contains the contents of the script. This is of course not a good thing. It does serve common html-files perfectly... I've been at this for quite a while now, and after all the googling and troubleshooting, I thought it would be a good time to ask you guys. Here's what I've got: The php5 and libapache2-mod-php5 packages are installed /etc/apache2/mods-available contains both php5.load and php5.conf, and these are symlinked from the mods-enabled directory The /etc/php5/ directory is left untouched since the installation. Here's the contents of /etc/apache2/mods-available/php.load: LoadModule php5_module /usr/lib/apache2/modules/libphp5.so And /etc/apache2/mods-available/php.conf: <IfModule mod_php5.c> <FilesMatch "\.ph(p3?|tml)$"> SetHandler application/x-httpd-php </FilesMatch> <FilesMatch "\.phps$"> SetHandler application/x-httpd-php-source </FilesMatch> <IfModule mod_userdir.c> <Directory /home/*/public_html> php_admin_value engine Off </Directory> </IfModule> </IfModule> What am I missing? This is a server with modified virtual hosts and the like, so I might have changed some settings which causes this problem, but simply purging and reinstalling is not an option so far, since the configuration is quite extensive. Any help would be great. Thanks.

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• Execute encrypted files but don't let anybody read them.

  - by Stebi

  I want to provide a virtual machine image with an installed web application. The user should be able to boot the vm (don't login, just boot) and a webserver should start automatically. The point is I want to hide the (ruby) source code of the web application from everyone as there is no obfuscator for ruby. I thought I could use file system encryption to encrypt the directory with the sourcecode (or even a whole partition). But the webserver user must be able to read it automatically after booting. Nobody is allowed to login as the webserver user (or any other user) so no other can read the contents. My questions are now: Is this possible? Because I give away the whole vm everybody could mount its virtual discs and read them (except the encrypted one). Is it now possible to find the key the webserver user needs to decrypt the files and decrypt them manually? Or is it safe to give such a vm away? The problem is that everything needed to decrypt must be included somewhere in the vm else the webserver cannot start automatically. Maybe I'm completely wrong and you have another tip for me securing the source code.

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• mod rewrite help

  - by Benny B

  Ok, I don't know regex very well so I used a generator to help me make a simple mod_rewrite that works. Here's my full URL https://www.huttonchase.com/prodDetails.php?id_prd=683 For testing to make sure I CAN use this, I used this: RewriteRule prodDetails/(.*)/$ /prodDetails.php?id_prd=$1 So I can use the URL http://www.huttonchase.com/prodDetails/683/ If you click it, it works but it completely messes up the relative paths. There are a few work-arounds but I want something a little different. https://www.huttonchase.com/prod_683_stainless-steel-flask I want it to see that 'prod' is going to tell it which rule it's matching, 683 is the product number that I'm looking up in the database, and I want it to just IGNORE the last part, it's there only for SEO and to make the link mean something to customers. I'm told that this should work, but it's not: RewriteRule ^prod_([^-]*)_([^-]*)$ /prodDetails.php?id_prd=$1 [L] Once I get the first one to work I'll write one for Categories: https://www.huttonchase.com/cat_11_drinkware And database driven text pages: https://www.huttonchase.com/page_44_terms-of-service BTW, I can flip around my use of dash and underscore if need be. Also, is it better to end the URLs with a slash or without? Thanks!

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• Varnish with multiple sites/boxes

  - by jerhinesmith

  Is it possible for Varnish to redirect traffic to different IPs based on the url? For example, is the following setup feasible (and if so, what would the VCL look like): *.example.com points to Varnish IP address When a request is made to foo.example.com, varnish checks the cache and sends the request to Server1's IP address on a cache miss. When a request is made to bar.example.com, varnish checks the cache and sends the request to Server2's IP address on a cache miss. foo and bar are (for the most part) completely unrelated sites. They use the engine, but have different content and their own distinct database. Since there previously was no penalty for doing so (other than cost) we split them up into two separate boxes so that a ton of traffic to foo won't have a negative impact on visitors browsing around bar. I could set up two instances of varnish and have one serve up foo's static content and the other serve up bar's, but as there doesn't seem to be much overhead to running Varnish, I think (perhaps mistakenly) that it would make more sense to go with one Varnish server that redirects the traffic to the appropriate box on a cache miss.

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