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  • How do I add a VMware ESXi Host to Microsoft Virtual Machine Manager?

    - by user63250
    I am trying to manage virtual machines running on a VMware ESXi host using Microsoft System Center Virtual Machine Manager. I was able to add the ESXi machine using the "Add VMware VirtualCenter server" option, but can't access any of the VMs on the datastore associated with this ESXi server. The datastore of the ESXi box is showing up with the correct name, but it won't let me see any of the VMs that have already been created; I get "There are no virtual machines on this host." Because I couldn't get any of the existing virtual machines to show up, I tried creating some new ones. When using VMM to connect to ESXi and create new VMs, I get the following error messages in the "rating explanation" section: The virtualization software on the selected host does not support virtual hard disks on an IDE bus. and The virtualization software on the host XXXXXX does not support the creation of dynamic virtual hard disk. Any ideas on why I can't manage existing machines and why I can't create new ones? The existing machines were created in vSphere. I should note that the ESXi server and the server running SCVMM are both on the same domain. I should also note that although the ESXi box has been added as a VirtualCetner server, when I try to add it through the "Add Host" option, I get an error message saying "Virtual Machine Manager cannot complete the VirtualCenter action on server EXSi because of the following error: The operation is not supported on the object."

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  • Ripping CD Audio simultaneously from 2 drives on one PC via USB or PATA - rip accuracy preserved?

    - by Rob
    I'm considering ripping audio (reading audio) from CDs using 2 drives simultaneously to speed up the process of ripping the CDs - i.e. 2 at a time rather than 1. Are there any issues with achieving maximum rip accuracy? In general I wondered if people have tried this and if the simultaneous streams from both rip activities would overload the host machine and cause packet loss or read retries resulting in a sub-standard CD-DA Audio CD rip? If it just means the rip is slightly slower (but still faster than sequentially doing one rip followed by another) but still of maximum accuracy then that is OK for me. I will be using dbPowerAmp to rip the CDs and converting to FLAC lossless format. Specific examples: There are 2 machines I intend to do it on: A Toshiba NB100 1.6Ghz Atom netbook, 2Gb RAM, running Windows XP Home with 1 external LG DVD/CD burner and external 1 LG Blu-ray burner attached via USB 2.0, ripping to the machine's 5400rpm internal hard drive. This rips from one CD drive very well, more than adequate, it is a nippy, fast little machine for its specification. A Desktop PC running Windows 7 Home Premium with MSI P4M900M2-L/ MS-7255v2.0 motherboard and 1.86Ghz Intel Core 2 Duo E6320, 7200rpm hard drive and 2Gb RAM, with an internal LG PATA DVD/CD burner (master) and a Philips DVD/CD burner (slave) on the same PATA bus (perhaps separate buses would be another option to consider here). Thoughts?

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  • Ubuntu raid 1 write errors

    - by Micah
    I have an Ubuntu server set up with two SATA drives in a RAID 1 configuration with MDADM. The machine is used to record raw video, which involves a lot of writing to the disk. Sometimes during video recording the computer will crash, will the following errors in kern.log: Mar 15 10:39:41 video kernel: [414501.629864] ata2.00: exception Emask 0x10 SAct 0x0 SErr 0x400100 action 0x6 Mar 15 10:39:41 video kernel: [414501.629870] ata2.00: BMDMA stat 0x26 Mar 15 10:39:41 video kernel: [414501.629875] ata2.00: SError: { UnrecovData Handshk } Mar 15 10:39:41 video kernel: [414501.629880] ata2.00: failed command: WRITE DMA EXT Mar 15 10:39:41 video kernel: [414501.629889] ata2.00: cmd 35/00:00:28:6d:f6/00:04:06:00:00/e0 tag 0 dma 524288 out Mar 15 10:39:41 video kernel: [414501.629891] res 51/84:b1:77:6e:f6/84:02:06:00:00/e0 Emask 0x30 (host bus error) Mar 15 10:39:41 video kernel: [414501.629896] ata2.00: status: { DRDY ERR } Mar 15 10:39:41 video kernel: [414501.629899] ata2.00: error: { ICRC ABRT } Mar 15 10:39:41 video kernel: [414501.629910] ata2.00: hard resetting link Mar 15 10:39:41 video kernel: [414501.973009] ata2.01: hard resetting link Mar 15 10:39:41 video kernel: [414502.482642] ata2.00: SATA link up 3.0 Gbps (SStatus 123 SControl 300) Mar 15 10:39:41 video kernel: [414502.482658] ata2.01: SATA link down (SStatus 0 SControl 300) Mar 15 10:39:41 video kernel: [414502.546160] ata2.00: configured for UDMA/133 Mar 15 10:39:41 video kernel: [414502.546203] ata2: EH complete Is this the result of faulty drives? Is software RAID just not performant enough for data rates ~15 MB/s, even with a quad-core i7? Thanks for your help. Edit: cat /proc/mdstat returns this: Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10] md0 : active raid1 sdb1[1] sda1[0] 976760768 blocks [2/2] [UU] unused devices: <none>

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  • Flash alternative for iBook Mac?

    - by Hunter Dolan
    I have a old Apple iBook G4 that I decided to hook up to my main TV. I like the setup because I can surf the internet on my TV now. The only thing that I can't seem to do is watch Flash videos. Apparently Flash Player 10 doesn't play nice with the iBook's graphics card's GPU, leaving all the graphics processing to the CPU which is a disaster. Others suggested downgrading to Flash Player 9, I did that, and youtube worked fine, but Hulu (The main reason I wanted to hook it up to the TV in the first place) did not. Anyone know of a Flash alternative or a Flash 10 fix for the iBook? Or even a Hulu client that doesn't require Flash. Here are my iBook's Specs Model Name: iBook G4 <br> Model Identifier: PowerBook6,5 <br> Processor Name: PowerPC G4 (1.2) <br> Processor Speed: 1.2 GHz <br> Number Of CPUs: 1 <br> L2 Cache (per CPU): 512 KB <br> Memory: 512 MB <br> Bus Speed: 133 MHz <br> Boot ROM Version: 4.8.7f1 <br> Mac OS X Version: 10.5.8 <br> PS: Don't tell me that I need to buy a new computer. I know that I would have better results with a new computer but I don't want to buy a new computer just for Hulu.

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  • Cannot Install Bootcamp on Mac Fusion Drive

    - by user3377019
    I have two drive installed in my mid-2013 Macbook pro. It is running osx maverick. I set the two drives (an ssd and a regular HD) up using the fusion drive (following the diy fusion drive guides out there). I went ahead and created a 40gb partition to host my windows install. I removed the SSD, installed windows, then reinstalled the SSD. As soon as the ssd was placed back in the bootcamp partition stopped booting. I get a blinking cursor on a black screen. I checked out the partition info in disk utility and it appears that the windows partition is not marked bootable. Below is some info I managed to gather. I am wondering if there is a way to fix the partition table so my bootcamp will boot. /dev/disk0 #: TYPE NAME SIZE IDENTIFIER 0: GUID_partition_scheme *120.0 GB disk0 1: EFI EFI 209.7 MB disk0s1 2: Apple_CoreStorage 119.7 GB disk0s2 3: Apple_Boot Boot OS X 134.2 MB disk0s3 /dev/disk1 #: TYPE NAME SIZE IDENTIFIER 0: GUID_partition_scheme *500.1 GB disk1 1: EFI EFI 209.7 MB disk1s1 2: Microsoft Basic Data BOOTCAMP 40.0 GB disk1s2 3: Apple_CoreStorage 459.2 GB disk1s3 4: Apple_Boot Boot OS X 650.0 MB disk1s4 /dev/disk2 #: TYPE NAME SIZE IDENTIFIER 0: Apple_HFS Macintosh HD *573.4 GB disk2 Name : BOOTCAMP Type : Partition Disk Identifier : disk1s2 Mount Point : /Volumes/BOOTCAMP File System : Windows NT File System (NTFS) Connection Bus : SATA Device Tree : IODeviceTree:/PCI0@0/SATA@1F,2/PRT1@1/PMP@0 Writable : No Universal Unique Identifier : 584BAED6-4C46-4F18-93B3-957F6E27003C Capacity : 40 GB (39,998,980,096 Bytes) Free Space : 16.34 GB (16,339,972,096 Bytes) Used : 23.66 GB (23,659,003,904 Bytes) Number of Files : 86,424 Number of Folders : 0 Owners Enabled : No Can Turn Owners Off : No Can Be Formatted : No Bootable : No Supports Journaling : No Journaled : No Disk Number : 1 Partition Number : 2

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  • How to transfer files via infrared on Linux?

    - by arielnmz
    I know this is a way too old technology but I've got some files inside a very old cellphone that I need to transfer to a very old computer. So far my Infrared USB device works well, it's detected by the machine (lsusb output): Bus 002 Device 002: ID 0df7:0620 Mobile Action Technology, Inc. MA-620 Infrared Adapter I've tried to send the file over MMS and even email (it lacks bluetooth, not to mention USB). But this cellphones's firmware doesn't let me attach the files. The file was originally transfered via IrDA, and it only has an internal memory (a whole 2 million bytes! whoa!). I found a package called irda-utils, but it seems that there are only two executables: irdaping and irdadump. I think the dump utility might do the job (which as far as I can see it's kind of a version of tcpdump but for IrDA), but I don't even know how to process the received frames. Could this question may be what I'm looking for? EDIT While reading through the Linux Infrared HOWTO I found about the OpenObex project, which may be what I'm looking for...

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  • Webcam becomes "Unknown Device" after Windows Messenger 2011 is installed

    - by Boris
    I have Sony VAIO VGN-NS290J laptop. I installed Windows 7 Ultimate 64-bit. I was able to find drivers for all hardware without any problems. Recently, I installed Microsoft Windows Live Essentials 2011, i.e. Windows Live Messenger 2011. Ever since that application is running on my computer, my webcam is not recognized by the OS any more. It is listed as the "Unknown Device" and placed in the Universal Serial Bus controllers group in the Device Manager. There don't seem to be any drivers for this webcam. It's a standard Sony Motion Eye web camera and Sony does not offer any drivers for it. There is one application to download that utilizes the camera, but there are no drivers (and the system is showing the same behavior regardless of the presence of the application). It happens from time to time that the webcam becomes recognized by the OS again, after a couple of restarts; but not always. Then it becomes unknown again. I am absolutely positive that this issue is caused by the Windows Live Messenger 2011, because same symptoms caused the same effects before. I wish to be able to continue to use this software, but also to use my webcam. I was wondering if anyone had a similar issue and if there is a way to fix it. Thanks for all the help, I appreciate it. Update: I have discovered a pattern - if the camera goes astray, restarting the machine does not bring it back; but switching the computer off and turning it back on does. Every time! This is getting super complicated :)

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  • Fetch videos from sony handycam to linux

    - by bstpierre
    I've got a Sony Handycam DCR-DVD101. When I plug connect the USB cable to my laptop (Ubuntu 10) it doesn't mount any storage device. If I run usb-devices, I see: T: Bus=02 Lev=02 Prnt=02 Port=00 Cnt=01 Dev#= 6 Spd=480 MxCh= 0 D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1 P: Vendor=054c ProdID=00c1 Rev=01.00 S: Manufacturer=SONY S: Product=Storage Device C: #Ifs= 1 Cfg#= 1 Atr=c0 MxPwr=2mA I: If#= 0 Alt= 0 #EPs= 2 Cls=08(stor.) Sub=05 Prot=50 Driver=usb-storage The driver says usb-storage, but I'm not sure how to get the device mounted. Is there a way to make this work? Update: checking dmesg, I see: [259072.576559] usb 2-1.1: new high speed USB device using ehci_hcd and address 6 [259072.687200] usb 2-1.1: configuration #1 chosen from 1 choice [259072.836188] Initializing USB Mass Storage driver... [259072.836476] scsi5 : SCSI emulation for USB Mass Storage devices [259072.836632] usb-storage: device found at 6 [259072.836636] usb-storage: waiting for device to settle before scanning [259072.836660] usbcore: registered new interface driver usb-storage [259072.836666] USB Mass Storage support registered. [259077.830410] usb-storage: device scan complete [259077.832343] scsi 5:0:0:0: CD-ROM SONY DDX-A1010 R1.0 PQ: 0 ANSI: 0 [259077.888167] sr1: scsi3-mmc drive: 0x/0x pop-up [259077.888446] sr 5:0:0:0: Attached scsi CD-ROM sr1 [259077.888593] sr 5:0:0:0: Attached scsi generic sg2 type 5 [259080.002079] sr 5:0:0:0: [sr1] Unhandled sense code [259080.002085] sr 5:0:0:0: [sr1] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE [259080.002091] sr 5:0:0:0: [sr1] Sense Key : Blank Check [current] [259080.002097] sr 5:0:0:0: [sr1] Add. Sense: No additional sense information [259080.002104] sr 5:0:0:0: [sr1] CDB: Read(10): 28 00 00 00 00 00 00 00 02 00 00 00 [259080.002117] end_request: I/O error, dev sr1, sector 0 [259080.002123] Buffer I/O error on device sr1, logical block 0 [259080.002128] Buffer I/O error on device sr1, logical block 1 Those I/O errors don't look good, is there any hope?

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  • Why my hard disk can't boot from the BIOS?

    - by Mario
    I installed a new sata DVD burner. When I turned on the machine (windows 7) it didn't boot. It can boot from a lubuntu CD. There is an option on lubuntu to boot form the first hard disk. If I select it, the machine boots normally to windows 7. So from the CD I can boot but not from the BIOS. I checked all the options more than once: boot from HD, not boot from removable, boot from USB, boot from optical. The order of the boot sequence is HD then DVD. I tried booting only with the HD; I disconnected both DVDs. I even tried recovery of the MBR: bootsect, bootrec, fixmbr, buildbcd, nt60, etc. So, the question is, does this have a reason, what's the difference between booting from the BIOS (as I think) to from the DVD?. The BIOS is intel, it has BIOS codes on the right bottom corner, it stays at 5A for a while. 5A is "Resetting PATA/SATA bus and all devices".

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  • Debian Squeeze Linux 9p virtfs guest mount failure

    - by Tero Kilkanen
    First some background information on the server: Host OS: Debian Linux Squeeze + qemu-kvm version 1.0+dfsg-8~bpo60+1 Guest OS: Debian Linux Squeeze I use qemu-kvm via libvirt. I have set up 9p VirtFS with the following in Guest's XML config: <filesystem type='mount' accessmode='passthrough'> <source dir='/srv/www'/> <target dir='wwwdata'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/> </filesystem> That is, I want to share /srv/www to the guest OS using mount tag wwwdata. When I try to mount the VirtFS share from the guest, I get an error message: root@server:~# mount -t 9p -o trans=virtio,version=9p2000.L2 wwwdata /srv/www/ mount: wwwdata: can't read superblock I also tried virtfs target dir/mount_tag www at first. I got the same error message. However, I was able to mount the VirtFS share using mount tag www1111, or www1 or similar. Some more notes on this one. dmesg doesn't show anything useful either in guest or the host. The only sign is this entry in the guest dmesg: [ 36.054936] Installing v9fs 9p2000 file system support Does anyone know how to get this working correctly? Google gives no useful information on this issue; I've tried several searches.

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  • Ubuntu xrandr rotate issue

    - by user83544
    I've just bought a second monitor for my PC which happens to be a pivot monitor. I've already read lots of forums related to my problem but haven't come across a solution - I have the same symptoms as dozens of posts but no matter whatever I try it just doesn't work. I've already changed the xorg.conf file and added in the device section just under Driver "nvidia" the following for my second monitor: Option "RandRRotation" "on" When I save and reboot I try to rotate my screen with the nvidia X server settings by choosing the second monitor and clicking either "left" or "right" for the rotation. It immediately exits the nvidia settings window and does nothing. I tried within the terminal by typing: xrandr -o right I get the following error: X Error of failed request: BadMatch (invalid parameter attributes) Major opcode of failed request: 154 (RANDR) Minor opcode of failed request: 2 (RRSetScreenConfig) Serial number of failed request: 14 Current serial number in output stream: 14 I actually manage to rotate it with Option "Rotate" "CCW" instead of "RandRRotation". The problem with this solution is that you get the second monitor in the right position, but any window you open on that screen is practically unchangeable. You can't change the size nor move it, making it useless for reading PDFs, which is the main reason why I bought this second screen to help me write my thesis. Any help is really appreciated. sudo lshw -c video hiram@hiram-linux:~$ sudo lshw -c video *-display description: VGA compatible controller product: nVidia Corporation vendor: nVidia Corporation physical id: 0 bus info: pci@0000:01:00.0 version: a1 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress vga_controller bus_master cap_list rom configuration: driver=nvidia latency=0 resources: irq:16 memory:f8000000-f9ffffff memory:d8000000-dfffffff memory:d4000000-d7ffffff ioport:dc00(size=12 memory:fbd80000-fbdfffff

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  • lm-sensors - always returns 32 degrees (celsius) for temperature

    - by mopoke
    On my VIA EPIA motherboard (using VIA VT8231 ISA bridge), I get strange output for the lm-sensors temperature reading. It always returns 32 degrees (celsius). I have previously had correct output for temperature (my munin graphs show temperatures typically in the range of 50 to 60 degrees. I've tried uninstalling (and purging) the lm-sensors package, have re-run sensors-detect a number of times and rebooted but nothing seems to change the output. I am running Ubuntu Karmic Koala (9.10). Anyone got any bright ideas on what I might have missed? uname -a: Linux george 2.6.31-16-386 #53-Ubuntu SMP Tue Dec 8 06:39:34 UTC 2009 i686 GNU/Linux cpuinfo: processor : 0 vendor_id : CentaurHauls cpu family : 6 model : 7 model name : VIA Samuel 2 stepping : 3 cpu MHz : 399.000 cache size : 64 KB fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 1 wp : yes flags : fpu de tsc msr cx8 mtrr pge mmx 3dnow up bogomips : 800.04 clflush size : 32 power management: lspci: 00:00.0 Host bridge: VIA Technologies, Inc. VT8601 [Apollo ProMedia] (rev 05) 00:01.0 PCI bridge: VIA Technologies, Inc. VT8601 [Apollo ProMedia AGP] 00:11.0 ISA bridge: VIA Technologies, Inc. VT8231 [PCI-to-ISA Bridge] (rev 10) 00:11.1 IDE interface: VIA Technologies, Inc. VT82C586A/B/VT82C686/A/B/VT823x/A/C PIPC Bus Master IDE (rev 06) 00:11.2 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 1e) 00:11.3 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 1e) 00:11.4 Bridge: VIA Technologies, Inc. VT8235 ACPI (rev 10) 00:11.5 Multimedia audio controller: VIA Technologies, Inc. VT82C686 AC97 Audio Controller (rev 40) 00:12.0 Ethernet controller: VIA Technologies, Inc. VT6102 [Rhine-II] (rev 51) 01:00.0 VGA compatible controller: Trident Microsystems CyberBlade/i1 (rev 6a) sensors: acpitz-virtual-0 Adapter: Virtual device temp1: +32.0°C (crit = +60.0°C)

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  • Which Linux distribution for vehicle LCD instrument panel

    - by Brent
    I will be designing an instrument panel for a vehicle to display the common gauges that you would find in a car - (speedometer, rpm, fuel level, oil pressure, etc.). We have selected a 7" LCD and are in the process of narrowing down the hardware (This will use an ARM processor). The idea is to read these values off of the CAN Bus and update the UI with those values. This needs to have a fairly quick boot time, 5-10 seconds would be acceptable from the time the ignigtion is turned on to the time the UI is running. I have been doing a lot of research on which linux distribution to use, but I wanted to ask the question here to get the community's suggestions. I have been a .NET programmer for years, so linux is a new world to me. Here is what I have found so far... Tizen is geared for In-Vehicle Infotainment (IVI) (plus some others). However, this project is not an IVI, and I do not need the phone dialer, navigation, etc. Meego is dead, and Tizen seems to be the replacement Angstrom, Debian... would either of these be useful? I am not tied to a particular programming language or IDE. Any help and direction is appreciated!

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  • linux mint VIA sound issue

    - by user2699451
    So I installed linux Mint 15 "Olivia" 64 bit on my Mecer W550EU laptop I have HD Audio with a VIA chipset charles-W55xEU charles # lsmod | grep snd snd_hda_codec_hdmi 36913 1 snd_hda_codec_via 51018 1 snd_hda_intel 39619 5 snd_hda_codec 136453 3 snd_hda_codec_hdmi,snd_hda_codec_via,snd_hda_intel snd_hwdep 13602 1 snd_hda_codec snd_pcm 97451 4 snd_hda_codec_hdmi,snd_hda_codec,snd_hda_intel snd_page_alloc 18710 2 snd_pcm,snd_hda_intel snd_seq_midi 13324 0 snd_seq_midi_event 14899 1 snd_seq_midi snd_rawmidi 30180 1 snd_seq_midi snd_seq 61554 2 snd_seq_midi_event,snd_seq_midi snd_seq_device 14497 3 snd_seq,snd_rawmidi,snd_seq_midi snd_timer 29425 2 snd_pcm,snd_seq snd 68876 19 snd_hwdep,snd_timer,snd_hda_codec_hdmi,snd_hda_codec_via,snd_pcm,snd_seq,snd_rawmidi,snd_hda_codec,snd_hda_intel,snd_seq_device soundcore 12680 1 snd And my sound card charles-W55xEU charles # aplay -l **** List of PLAYBACK Hardware Devices **** card 0: PCH [HDA Intel PCH], device 0: VT1802 Analog [VT1802 Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 card 0: PCH [HDA Intel PCH], device 2: VT1802 HP [VT1802 HP] Subdevices: 1/1 Subdevice #0: subdevice #0 card 0: PCH [HDA Intel PCH], device 3: HDMI 0 [HDMI 0] Subdevices: 1/1 Subdevice #0: subdevice #0 and my audio device charles-W55xEU charles # lspci -v | grep -A7 -i "audio" 00:1b.0 Audio device: Intel Corporation 7 Series/C210 Series Chipset Family High `Definition Audio Controller (rev 04)` Subsystem: CLEVO/KAPOK Computer Device 0550 Flags: bus master, fast devsel, latency 0, IRQ 47 Memory at f7c10000 (64-bit, non-prefetchable) [size=16K] Capabilities: [50] Power Management version 2 Capabilities: [60] MSI: Enable+ Count=1/1 Maskable- 64bit+ Capabilities: [70] Express Root Complex Integrated Endpoint, MSI 00 Capabilities: [100] Virtual Channel Sometimes when I boot up, soundworks, other times it doenst, it is completely random, so far, no-one on xchat linux help or linux mint forums was able to help me, I have always had issues with sound on VIA chipsets I have: sudo apt-get upgrade && apt-get install mint-meta-cinnamon it seemed to help but after 2-3 reboots, the problem came back, btw, everytime I checked, pulse audio is selected to Duplex Audio Input & Output and alsa mixer is always unmuted!

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  • Backup data rate on Raspberry Pi maxing out at 5 Mb/s. Why?

    - by bastibe
    I set up my Raspberry Pi as a Time Machine, as documented here. At the moment, the Raspberry Pi is connected to my MacBook Pro using a direct Ethernet cable. Also, an external hard drive (laptop drive) is connected to the Raspberry Pi using the USB port. However, backups are pretty slow. Activity Monitor claims that the Network is transferring a very steady 5 Mb/s, where my Time Capsule is transferring up to 8 Mb/s with a lot of fluctuation. The Raspberry Pi self-reports (top) that its CPU is only half-used, with about equal parts afpd, usb-storage and jbd2/sda1-8. Thus, I think that the processing power of the Raspberry Pi does not seem to be the problem here. To me, this looks like there is some kind of bottleneck that maxes out at 5 Mb/s thus potentially having my backups run at less than their potential speed. To the best of my knowledge, this might be the afp-daemon, the usb-bus or the external hard drive. So, my question is, how could I identify the true culprit and what can I do about it?

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  • The bottlenecks of any computer, what to look for?

    - by WebDevHobo
    Whether it is a laptop or a desktop, any computer is made up of several pieces of hardware that communicate with each other. Sending data back and forth to ensure that the user gets the desired results. I have seen some theoretical stuff on computers & hardware, but I wonder how it all comes together. CPU RAM Graphics Card L1 CACHE L2 CACHE L3 CACHE FSB ... And all other things. Which is the biggest bottle neck? Why would a person not want/need a big value in one of those categories in certain situations? P.S.: when reading the specs of the i5 750 processor, I came across this description: In place of the FSB, one or more high speed, point-to-point buses called Quick Path Interconnect (QPI) are used, formerly known as Common Serial Interconnect Bus or CSI. QPI features higher bandwidth than the traditional FSB and is better suited to system scaling. What is this, and how does it compare to FSB? EDIT: I am not planning to buy a computer at all. The goal of this question is to understand the internal relation of various hardware pieces, their specific functions and how they work together. For instance, I have heard to a somewhat higher-than-usual amount of L2/L3 Cache can help speed up your computer. What's up with saying that? Also I forgot to mention Hard-disk RPM.

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  • Dell PERC 5 - RAID-10 keeps rebuilding drive 2 every day

    - by raid question
    I have a Dell PowerEdge 2950 with this card: RAID bus controller [0104]: Dell PowerEdge Expandable RAID controller 5 [1028:0015] and six disks in a RAID-10. I replaced drive 2, because it didn't show up, and then it started to rebuild itself: root@backup01:~# megaraidsas-status -- Arrays informations -- -- ID | Type | Size | Status a0d0 | RAID 10 | 5587GiB | DEGRADED -- Disks informations -- ID | Model | Status | Warnings a0e8s0 | ATA ST2000DM001-9YN1 1863GiB | online | errs: media:0 other:5393 a0e8s1 | ATA ST2000DM001-9YN1 1863GiB | online | errs: media:0 other:5394 a0e8s2 | ATA ST2000DM001-1E61 1863GiB | rebuild | errs: media:0 other:99 a0e8s3 | ATA ST2000DM001-9YN1 1863GiB | online | errs: media:0 other:5393 a0e8s4 | ATA ST2000DM001-9YN1 1863GiB | online | errs: media:0 other:5393 a0e8s5 | ATA ST2000DM001-9YN1 1863GiB | online | errs: media:0 other:5393 The rebuild finishes, then the virtual drive becomes optimal, and drive 2 goes online. Then once a day, drive 2 acts like it's been removed, and the rebuild starts all over again. How do I make this once a day rebuild stop? Event Description: Removed: PD 02(e1/s2) Event Description: Removed: PD 02(e1/s2) Info: enclPd=08, scsiType=0, portMap=04, sasAddr=1221000002000000,0000000000000000 Event Description: State change on VD 00/0 from OPTIMAL(3) to DEGRADED(2) Event Description: VD 00/0 is now DEGRADED1 Event Description: State change on PD 02(e1/s2) from ONLINE(18) to FAILED(11) Event Description: State change on PD 02(e1/s2) from FAILED(11) to UNCONFIGURED_BAD(1) Event Description: Background Initialization failed on VD 00/0 Event Description: Inserted: PD 02(e1/s2) Event Description: Inserted: PD 02(e1/s2) Info: enclPd=08, scsiType=0, portMap=04, sasAddr=1221000002000000,0000000000000000 Event Description: PD 02(e1/s2) is not a certified drive Event Description: State change on PD 02(e1/s2) Event Description: State change on PD 02(e1/s2) from UNCONFIGURED_GOOD(0) to OFFLINE(10) from UNCONFIGURED_BAD(1) to UNCONFIGURED_GOOD(0) Event Description: Rebuild automatically started on PD 02(e1/s2) Event Description: State change on PD 02(e1/s2) from OFFLINE(10) to REBUILD(14)

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  • Running a VM off a USB 2.0 Flash Drive - Mac/Parallels/XP

    - by geerlingguy
    I use a MacBook Air as my primary machine, and the 128GB SSD means space is precious. To save about 10 GB, I've been running Parallels with a Windows XP VM off an external USB hard drive, which performs as well in everyday use as running the VM off the internal SSD. So, I bought a tiny 32GB USB 2.0 flash drive, plugged it into the MacBook Air, formatted it first as ExFAT (which was slow), then as Mac OS Extended (Journaled) (which was also slow), and copied over my VM file, and ran Parallels off it. My full experience is documented here: http://www.midwesternmac.com/blogs/jeff-geerling/running-windows-xp-vm Straight file copies are really fast — 30 MB/sec read (solid the whole time), and 10-11 MB/sec write (solid the whole time). But I noticed that once XP started running, the disk access rates were in the low KB ranges. Are USB flash drives really that poor at random access, or could I possibly be missing something (the format of the flash drive, etc.?)? Of note, I've tried the following, to no great effect: Formatting the drive as either ExFAT or Mac OS Extended (Journaled) Unplugging all other USB devices and turning off Bluetooth (which runs on the right-side-port USB bus). Plugging in the flash drive either direct in the right side port, or the left side port, or into a USB 2.0 hub

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  • How to give wife emergency access to logins, passwords, etc.?

    - by Torben Gundtofte-Bruun
    I'm the digital guru in my household. My wife is good with email and forum websites but she trusts me with all our important digital stuff -- such as online banking and other things that require passwords, but also family photos and the plethora of other digital things in a modern home. We discuss relevant actions but it's always me that executes the actions. If I should get "hit by a bus" then my wife would be thoroughly stranded -- she would have no idea what digital stuff is where on our computer, how to access it, what online accounts we have, and their login credentials are. It would also leave my many public appearances (personal websites, email accounts, social networks, etc.) unresolved. To complicate things, I'm one of those people who don't use password as my password everywhere; I use a mix of SuperGenPass and LastPass, and also two-factor authentication whenever possible. I don't have much hope that she would find her way through a written explanation of all that in a stressful situation. I could just tell her that she should ask my tech-savvy twin brother and then entrust him with my LastPass master passphrase. I feel that would have a high chance of success, but it's inelegant and leaves my wife without control of the information. How can I ensure that my wife has access to my digital remains?

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  • Setting my NIC to full duplex

    - by David
    I am trying to optimize the network speed of my Solaris X86 server, and have discovered that the Cisco 3548 that it is connected to has issues with the NIC in my server. The NIC appears to have not been configured fully, and is coming up 100 half-duplex. The 3548 ports are all set to 100 full. Ideally I'd like to have the server set for 100 full, and have been attempting to configure it using ndd commands. However I have had no results. The following command: -bash-3.00# dladm show-dev rtls0 link: unknown speed: 100 Mbps duplex: unknown The NIC shows up as: pci bus 0x0001 cardnum 0x06 function 0x00: vendor 0x10ec device 0x8139 Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ which should be configurable. I have modified the configuration file from auto config (5) to 100 fdx (4) to no avail. If there is no other choice, I could alter the Cisco 3548 to be 100 half-duplex. However, this solution causes huge performance loss. Currently throughput is about 500Kbps, when it should be around 40Mbps.

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  • Extend RAID 1 (HP SmartArray P410i) running Linux

    - by Oliver
    I took over a fairly simple server setup with the following RAID 1 config running Ubuntu 11.10 (Kernel 3.0.0-12-server x86_64): => ctrl all show config Smart Array P410i in Slot 0 (Embedded) (sn: removed) array A (SAS, Unused Space: 1335535 MB) logicaldrive 1 (279.4 GB, RAID 1, OK) physicaldrive 1I:1:1 (port 1I:box 1:bay 1, SAS, 1 TB, OK) physicaldrive 1I:1:2 (port 1I:box 1:bay 2, SAS, 1 TB, OK) Initially there were two 300GB disks that got replaced by 1TB disks and I now have to extend the logical volume to use that extra space. However, when trying to do so I get the following warning: => ctrl slot=0 ld 1 modify size=max Warning: Extension may not be supported on certain operating systems. Performing extension on these operating systems can cause data to become inaccessible. See ACU documentation for details. Continue? (y/n) Is it safe to say yes or am I at risk of corrupting the file system / loosing data? Rearranging and extending the file system afterwards shouldn't be an issue as I can take the server offline and boot from a gparted live disk. Here's the config of the RAID controller in use: => ctrl all show detail Smart Array P410i in Slot 0 (Embedded) Bus Interface: PCI Slot: 0 Serial Number: removed RAID 6 (ADG) Status: Disabled Controller Status: OK Hardware Revision: Rev C Firmware Version: 5.12 Rebuild Priority: Medium Expand Priority: Medium Surface Scan Delay: 15 secs Surface Scan Mode: Idle Wait for Cache Room: Disabled Surface Analysis Inconsistency Notification: Disabled Post Prompt Timeout: 0 secs Cache Board Present: False Drive Write Cache: Disabled SATA NCQ Supported: True And the partition table: Number Start End Size Type File system Flags 1 1049kB 274GB 274GB primary ext4 boot 2 274GB 300GB 25.8GB extended 5 274GB 300GB 25.8GB logical linux-swap(v1)

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  • VLC tv card streaming

    - by Franco
    I'm trying to stream the output of my desktop's tv card to my laptop using vlc without success. I have on both pcs ArchLinux installed. I'm stuck here: $ cvlc v4l2:///dev/video0:norm=pal-nc:frequency=543250:size=640x480:channel=0:input-slave=alsa:///dev/dsp:audio=0 --sout '#transcode{vcodec=mp4v,acodec=mpga,vb=3000,ab=256,vt=800000,keyint=80,deinterlace}:standard{access=http,mux=ogg,dst=192.168.0.2:8080}' --ttl 12 VLC media player 1.1.4 The Luggage (revision exported) Blocked: call to unsetenv("DBUS_ACTIVATION_ADDRESS") Blocked: call to unsetenv("DBUS_ACTIVATION_BUS_TYPE") [0x1c9e480] inhibit interface error: Failed to connect to the D-Bus session daemon: /usr/bin/dbus-launch terminated abnormally with the following error: Autolaunch error: X11 initialization failed. [0x1c9e480] main interface error: no suitable interface module [0x1ca1500] main interface error: no suitable interface module [0x1bb3120] main libvlc error: interface "globalhotkeys,none" initialization failed [0x1c9f940] dummy interface: using the dummy interface module... [0x1ca4850] main access out: creating httpd [0x1ebb340] mux_ogg mux: Open And on my laptop: $ vlc http://192.168.0.2:8080 VLC media player 1.1.4.1 The Luggage (revision exported) Blocked: call to unsetenv("DBUS_ACTIVATION_ADDRESS") Blocked: call to unsetenv("DBUS_ACTIVATION_BUS_TYPE") Blocked: call to setlocale(6, "") Blocked: call to sigaction(17, 0xb25c7058, 0xb25c70e4) Warning: call to signal(13, 0x1) Warning: call to signal(13, 0x1) Blocked: call to setenv("ORBIT_SOCKETDIR", "/tmp/orbit-zf", 1) Warning: call to srand(1287690122) Warning: call to rand() Blocked: call to setlocale(6, "") (process:17933): Gtk-WARNING **: Locale not supported by C library. Using the fallback 'C' locale. Warning: call to signal(13, 0x1) Blocked: call to setlocale(6, "") [0x8af5f04] main stream error: cannot pre fill buffer Any idea why this isn't working?

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  • Gnome 3 gdm fails to start after preupgrade from fedora 14 to 15

    - by digital illusion
    I'm not able to boot fedora 15 in runlevel 5. After all services start, when the login screen should appear, gdm just show a mouse waiting cursor and keeps restarting itself. From /var/log/gdm/\:0-greeter.log Gtk-Message: Failed to load module "pk-gtk-module" /usr/bin/gnome-session: symbol lookup error: /usr/lib/gtk-3.0/modules/libatk-bridge.so: undefined symbol: atk_plug_get_type /usr/libexec/gnome-setting-daemon: symbol lookup error: /usr/lib/gtk-3.0modules/libatk-bridge.so: undefined symbol: atk_plug_get_type Where should atk_plug_get_type be defined? Edit: Here a better description of the error (system-config-network-gui:2643): Gnome-WARNING **: Accessibility: failed to find module 'libgail-gnome' which is needed to make this application accessible /usr/bin/python: symbol lookup error: /usr/lib/gtk-2.0/modules/libatk-bridge.so: undefined symbol: atk_plug_get_type Why there are still references to gtk2? Did preupgrade fail? Attaching upgrade log... it seems gdm was not added, but it is present in the users and groups list. May 26 11:25:52 sysimage sendmail[1076]: alias database /etc/aliases rebuilt by root May 26 11:25:52 sysimage sendmail[1076]: /etc/aliases: 77 aliases, longest 23 bytes, 795 bytes total May 26 11:46:09 sysimage useradd[1793]: failed adding user 'dbus', data deleted May 26 11:53:37 sysimage systemd-machine-id-setup[2443]: Initializing machine ID from D-Bus machine ID. May 26 11:55:28 sysimage useradd[2835]: failed adding user 'apache', data deleted May 26 11:55:38 sysimage useradd[2842]: failed adding user 'haldaemon', data deleted May 26 11:55:43 sysimage useradd[2848]: failed adding user 'smolt', data deleted May 26 11:57:32 sysimage sendmail[3032]: alias database /etc/aliases rebuilt by root May 26 11:57:32 sysimage sendmail[3032]: /etc/aliases: 77 aliases, longest 23 bytes, 795 bytes total May 26 11:57:46 sysimage groupadd[3066]: group added to /etc/group: name=cgred, GID=482 May 26 11:57:47 sysimage groupadd[3066]: group added to /etc/gshadow: name=cgred May 26 11:57:47 sysimage groupadd[3066]: new group: name=cgred, GID=482 May 26 11:58:42 sysimage useradd[3086]: failed adding user 'ntp', data deleted May 26 12:00:13 sysimage dbus: avc: received policyload notice (seqno=2) May 26 12:15:08 sysimage useradd[4950]: failed adding user 'gdm', data deleted May 26 12:24:39 sysimage dbus: avc: received policyload notice (seqno=3) May 26 12:25:24 sysimage useradd[5522]: failed adding user 'mysql', data deleted May 26 12:25:37 sysimage useradd[5533]: failed adding user 'rpcuser', data deleted May 26 12:26:31 sysimage useradd[5592]: failed adding user 'tcpdump', data deleted Any suggestions before I revert installation to F14?

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  • Unable to write DVD-R(Blank DVD's)

    - by FrozenKing
    I have a problem in dvd drive i.e. It can read CD/DVD and can write CD and all CD/DVD-RW but cannot write DVD DVD drive model is SH-S203B Samsung; I also have a log file created by nero burning rom 11. Actually the fact is no Blank DVD's are being read in my dvd drive only previously written dvd's can be read! Is this the problem of OS or should I try cleaning the dvd drive or my DVD drive is 4yrs old so is it going to spoil now, since it is showing this type of symptoms! OS = WinXP AV = KIS 2012 DVD Drive = Samsung SH-S203B (Also tried latest firmware and downgrade versions also) IA32 Nero Version: 11.2.4.100 Internal Version: 11,2,4,100 Recorder: <TSSTcorp CDDVDW SH-S203B>Version: SB04 - HA 1 TA 0 - 11.2.4.100 Adapter driver: <Serial ATA> HA 1 Drive buffer : 2048kB Bus Type : via Inquiry data CD-ROM: <TSSTcorp CDDVDW SH-S203B >Version: SB04 - HA 1 TA 0 - 11.2.4.100 Adapter driver: <Serial ATA> HA 1 18:58:10 #37 SPTI -1511 File SCSIPassThrough.cpp, Line 224 CdRom0: SCSIStatus(x02) WinError(0) NeroError(-1511) CDB Data: 0x28 00 00 00 00 00 00 00 10 00 Sense Key: 0x04 (KEY_HARDWARE_ERROR) Sense Code: 0x3E Sense Qual: 0x02 Sense Area: 0x70 00 04 00 00 00 00 0A 00 00 00 00 3E 02 Buffer x08047340: Len x8000 18:58:10 #38 SectorVerify 20 File Cdrdrv.cpp, Line 12057 Read errors from sector 0 to 14 <Padding> 18:58:19 #39 SPTI -1511 File SCSIPassThrough.cpp, Line 224 CdRom0: SCSIStatus(x02) WinError(0) NeroError(-1511) CDB Data: 0x28 00 00 00 00 10 00 00 10 00 Sense Key: 0x04 (KEY_HARDWARE_ERROR) Sense Code: 0x3E Sense Qual: 0x02 Sense Area: 0x70 00 04 00 00 00 00 0A 00 00 00 00 3E 02 Buffer x08047340: Len x8000 18:58:19 #40 SectorVerify 21 File Cdrdrv.cpp, Line 12057 Read error at sector 15 <Virtual Multisession Info> 18:58:19 #41 SectorVerify 20 File Cdrdrv.cpp, Line 12057 Read errors from sector 16 to 18 <Volume Structure Descriptor Sequence> 18:58:28 #42 SPTI -1511 File SCSIPassThrough.cpp, Line 224 CdRom0: SCSIStatus(x02) WinError(0) NeroError(-1511) CDB Data: 0x28 00 00 00 00 20 00 00 10 00 Sense Key: 0x04 (KEY_HARDWARE_ERROR) Sense Code: 0x3E Sense Qual: 0x02 Sense Area: 0x70 00 04 00 00 00 00 0A 00 00 00 00 3E 02 Buffer x08047340: Len x8000

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  • computer build for extreme tabbed browsing

    - by David Berger
    I'm interested in building or buying a task-specific computer for my brother. His requirements are ridiculously simple: the machine has to be able to wait in hundreds of web-based virtual waiting rooms at once and not crash. To be competitive, he needs to be able to enter the waiting rooms an dauto-refresh them faster. My question is, what priority do I give the different specs? My initial surmise is this: Connection speed (nothing to do with my build, but I kind of think this will be more beneficial than anything I build for him) Memory size -- I don't usually see firefox taking up more than a gig, even when heavily tabbed, but I think one gig for the operating system and two gigs for the browser are necessary. Processor speed -- I think the processor will affect performance, but even something out of date will do what he needs Memory speed/RAM bus -- I doubt this will matter much, but it seems just on this side of irrelevant. Everything else is a non-issue for him. Does this seem to stack up correctly? Also, since he's looking to stay on the cheaper side, and I might end up recommending a refurb to him, is there anything particularly egregious that Vista would do if it came pre-installed? If I build it myself, I'll give him linux, but if I have it shipped to him, I'm not sure I could walk him through the install process for linux, but I probably could walk him through the process to upgrade to Windows 7, if it were somehow worth it.

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