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[Martin Öhrling <martin@xxxxxxxxxxxxxxxxx>]

Module seems to be missing from the attached information. Cards of
interes are:

00:02.0 VGA compatible controller: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor Integrated Graphics Controller (rev 06) (prog-if 00 [VGA controller])
	Subsystem: Gigabyte Technology Co., Ltd Device d000
	Flags: bus master, fast devsel, latency 0, IRQ 11
	Memory at d0400000 (64-bit, non-prefetchable) [size=4M]
	Memory at 90000000 (64-bit, prefetchable) [size=256M]
	I/O ports at f000 [disabled] [size=64]
	Capabilities: <access denied>
	Kernel driver in use: pci-stub

01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Hawaii XT [Radeon R9 290X] (prog-if 00 [VGA controller])
	Subsystem: ASUSTeK Computer Inc. Device 046c
	Flags: bus master, fast devsel, latency 0, IRQ 64
	Memory at a0000000 (64-bit, prefetchable) [size=256M]
	Memory at b0000000 (64-bit, prefetchable) [size=8M]
	I/O ports at e000 [size=256]
	Memory at b0800000 (32-bit, non-prefetchable) [size=256K]
	Expansion ROM at b0840000 [disabled] [size=128K]
	Capabilities: <access denied>
	Kernel driver in use: pci-stub

02:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Cape Verde PRO [Radeon HD 7750 / R7 250E] (prog-if 00 [VGA controller])
	Subsystem: PC Partner Limited / Sapphire Technology Device e213
	Flags: bus master, fast devsel, latency 0, IRQ 63
	Memory at c0000000 (64-bit, prefetchable) [size=256M]
	Memory at d0000000 (64-bit, non-prefetchable) [size=256K]
	I/O ports at d000 [size=256]
	Expansion ROM at d0040000 [disabled] [size=128K]
	Capabilities: <access denied>
	Kernel driver in use: fglrx_pci

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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:
  Triaged

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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