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[Martin Öhrling <martin@xxxxxxxxxxxxxxxxx>]

Got a working desktop without the lspci file!

There is still an error message in log: "Error : Failed to open
/dev/dri"

Could that be related to error messages from dmesg?

[    5.484514] vgaarb: this pci device is not a vga device
[    5.484520] vgaarb: this pci device is not a vga device
[    5.484523] vgaarb: this pci device is not a vga device
[    5.484530] vgaarb: device changed decodes: PCI:0000:00:02.0,olddecodes=io+mem,decodes=none:owns=none
[    5.484536] vgaarb: this pci device is not a vga device
[    5.484539] vgaarb: this pci device is not a vga device
[    5.484542] vgaarb: this pci device is not a vga device
[    5.484546] vgaarb: this pci device is not a vga device
[    5.484549] vgaarb: this pci device is not a vga device
[    5.484553] vgaarb: this pci device is not a vga device
[    5.484557] vgaarb: this pci device is not a vga device
[    5.484560] vgaarb: this pci device is not a vga device
[    5.484564] vgaarb: this pci device is not a vga device
[    5.484568] vgaarb: this pci device is not a vga device
[    5.484572] vgaarb: this pci device is not a vga device
[    5.484576] vgaarb: this pci device is not a vga device
[    5.484580] vgaarb: this pci device is not a vga device
[    5.484584] vgaarb: this pci device is not a vga device
[    5.484588] vgaarb: this pci device is not a vga device
[    5.484595] vgaarb: device changed decodes: PCI:0000:01:00.0,olddecodes=io+mem,decodes=none:owns=none
[    5.484602] vgaarb: this pci device is not a vga device
[    5.484611] vgaarb: this pci device is not a vga device
[    5.484617] vgaarb: this pci device is not a vga device
[    5.484623] vgaarb: this pci device is not a vga device
[    5.484629] vgaarb: this pci device is not a vga device
[    5.484634] vgaarb: this pci device is not a vga device
[    5.484640] vgaarb: this pci device is not a vga device
[    5.484647] vgaarb: this pci device is not a vga device
[    5.744119] fglrx_pci 0000:02:00.0: irq 63 for MSI/MSI-X
[    5.744494] <6>[fglrx] Firegl kernel thread PID: 2276
[    5.744545] <6>[fglrx] Firegl kernel thread PID: 2277
[    5.744598] <6>[fglrx] Firegl kernel thread PID: 2278
[    5.744658] <6>[fglrx] IRQ 63 Enabled
[    5.750607] <6>[fglrx] Reserved FB block: Shared offset:0, size:1000000 
[    5.750609] <6>[fglrx] Reserved FB block: Unshared offset:f838000, size:4000 
[    5.750609] <6>[fglrx] Reserved FB block: Unshared offset:f83c000, size:4c4000 
[    5.750610] <6>[fglrx] Reserved FB block: Unshared offset:3ffee000, size:12000 
[    6.150848] pci-stub 0000:01:00.0: irq 64 for MSI/MSI-X
[    6.151213] <6>[fglrx] Firegl kernel thread PID: 2280
[    6.151317] <6>[fglrx] Firegl kernel thread PID: 2281
[    6.151424] <6>[fglrx] Firegl kernel thread PID: 2282
[    6.151503] <6>[fglrx] IRQ 64 Enabled
[    6.174634] <6>[fglrx] Reserved FB block: Shared offset:0, size:1000000 
[    6.174636] <6>[fglrx] Reserved FB block: Unshared offset:f738000, size:4000 
[    6.174637] <6>[fglrx] Reserved FB block: Unshared offset:f73c000, size:4c4000 
[    6.174637] <6>[fglrx] Reserved FB block: Unshared offset:fc00000, size:100000 
[    6.174638] <6>[fglrx] Reserved FB block: Unshared offset:ffff4000, size:c000 


** Attachment added: "Log from patched gpu-manager"
   https://bugs.launchpad.net/ubuntu/+source/ubuntu-drivers-common/+bug/1397124/+attachment/4274153/+files/gpu-manager.log

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https://bugs.launchpad.net/bugs/1397124

Title:
  gpu-manager tries to use pci-stub module as a vga driver

Status in ubuntu-drivers-common package in Ubuntu:
  In Progress

Bug description:
  There is two AMD gpu:s installed in my computer. The first one uses
  the fglrx module and is the one that is intended to be used for the
  linux desktop. The second is intended for gpu passthrough and owned by
  pci-stub.

  gpu-manager makes the assumption that a card shall be used based on
  vendor/device id and if the fglrx module is loaded. That is not
  sufficient in this case. I have not verified if the same applies to
  xen-pciback but it seems likely.

  My workaround has been to use the fake lspci file option and a
  manually created xorg.conf. Everything worked fine before I changed
  one of the cards to use the pci-stub module. The result before use of
  fake_lspci was a permanently blank screen.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.10
  Package: ubuntu-drivers-common 1:0.2.98.4
  ProcVersionSignature: Ubuntu 3.16.0-24.32-generic 3.16.4
  Uname: Linux 3.16.0-24-generic x86_64
  NonfreeKernelModules: fglrx
  ApportVersion: 2.14.7-0ubuntu8
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Thu Nov 27 22:07:08 2014
  InstallationDate: Installed on 2014-01-18 (312 days ago)
  InstallationMedia: Ubuntu-Server 13.10 "Saucy Salamander" - Release amd64 (20131016)
  SourcePackage: ubuntu-drivers-common
  UpgradeStatus: Upgraded to utopic on 2014-10-29 (29 days ago)
  mtime.conffile..etc.init.gpu.manager.conf: 2014-11-26T23:10:48.005964

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