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["Christopher M. Penalver" <christopher.m.penalver@xxxxxxxxx>]

Etienne URBAH, would you need a backport to a release prior to Vivid, or
may this be closed as Status Invalid?

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https://bugs.launchpad.net/bugs/1396840

Title:
  10de:0867 [iMac9,1] Module nouveau systematically crashes after a few
  minutes, whereas module nvidia from nvidia-331-updates crashes only
  after several hours of work

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  Module 'nouveau' systematically crashes after a few minutes, whereas
  module 'nvidia' from 'nvidia-331-updates' crashes only after several
  hours of work.

  $ uname -r
  3.16.0-25-generic

  $ dpkg-query -W 'linux-*image-*3.16.0-25*'
  linux-image-3.16.0-25-generic	3.16.0-25.33
  linux-image-extra-3.16.0-25-generic	3.16.0-25.33
  linux-signed-image-3.16.0-25-generic	3.16.0-25.33

  $ lsmod | head -1 ;  lsmod | grep '^nouveau'  
  Module                  Size  Used by
  nouveau              1234845  3 

  $ sudo lspci -nn -vv -s 03:00.0
  03:00.0 VGA compatible controller [0300]: NVIDIA Corporation C79 [GeForce 9400] [10de:0867] (rev b1) (prog-if 00 [VGA controller])
  	Subsystem: Apple Inc. iMac 9,1 [106b:00ad]
  	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
  	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
  	Latency: 0, Cache Line Size: 256 bytes
  	Interrupt: pin A routed to IRQ 45
  	Region 0: Memory at d2000000 (32-bit, non-prefetchable) [size=16M]
  	Region 1: Memory at c0000000 (64-bit, prefetchable) [size=256M]
  	Region 3: Memory at d0000000 (64-bit, prefetchable) [size=32M]
  	Region 5: I/O ports at 1000 [size=128]
  	Expansion ROM at d3000000 [disabled] [size=128K]
  	Capabilities: [60] Power Management version 2
  		Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
  		Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
  	Capabilities: [68] MSI: Enable+ Count=1/1 Maskable- 64bit+
  		Address: 00000000fee0300c  Data: 4152
  	Kernel driver in use: nouveau

  ProblemType: Bug
  DistroRelease: Ubuntu 14.10
  Package: linux-image-extra-3.16.0-25-generic 3.16.0-25.33
  ProcVersionSignature: Ubuntu 3.16.0-25.33-generic 3.16.7
  Uname: Linux 3.16.0-25-generic x86_64
  NonfreeKernelModules: wl
  ApportVersion: 2.14.7-0ubuntu8
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  urbah      3073 F.... pulseaudio
  CurrentDesktop: GNOME
  Date: Thu Nov 27 02:05:32 2014
  HibernationDevice: RESUME=UUID=d78e46a2-825e-4ad0-8f14-c7d2935c33c7
  InstallationDate: Installed on 2014-11-03 (23 days ago)
  InstallationMedia: Ubuntu-GNOME 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
  MachineType: Apple Inc. iMac9,1
  ProcFB: 0 nouveaufb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-25-generic.efi.signed root=UUID=b587542c-4076-491a-ae4d-21942b20daf6 ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.16.0-25-generic N/A
   linux-backports-modules-3.16.0-25-generic  N/A
   linux-firmware                             1.138
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 04/27/09
  dmi.bios.vendor: Apple Inc.
  dmi.bios.version: IM91.88Z.008D.B08.0904271717
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: Mac-F2218FC8
  dmi.board.vendor: Apple Inc.
  dmi.chassis.asset.tag: Asset Tag#
  dmi.chassis.type: 13
  dmi.chassis.vendor: Apple Inc.
  dmi.chassis.version: Mac-F2218FC8
  dmi.modalias: dmi:bvnAppleInc.:bvrIM91.88Z.008D.B08.0904271717:bd04/27/09:svnAppleInc.:pniMac9,1:pvr1.0:rvnAppleInc.:rnMac-F2218FC8:rvr:cvnAppleInc.:ct13:cvrMac-F2218FC8:
  dmi.product.name: iMac9,1
  dmi.product.version: 1.0
  dmi.sys.vendor: Apple Inc.

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