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** Changed in: linux (Ubuntu)
       Status: New => Confirmed

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https://bugs.launchpad.net/bugs/1707695

Title:
  radeon 0000:03:00.0: ring 0 stalled for more than 10000msec

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  My system intermittently locks up every few days. It does not seem to
  correspond to a particular program or action.  When that happens, the
  screen goes to black, then returns after a few seconds. At that point,
  the time on the clock is static and indicates that the screen is
  frozen, but audio continues to play for 30 seconds to a minute. The
  keyboard and mouse do not affect what's being displayed, but I can Alt
  - SysRq - REISUB to restart.

  Every time (7 crashes and counting), /var/log/kern.log indicates that

  kernel: [353692.378886] radeon 0000:03:00.0: ring 0 stalled for more than 
10280msec
  kernel: [353692.378896] radeon 0000:03:00.0: GPU lockup (current fence id 
0x00000000006e96e5 last fence id 0x00000000006e96e9 on ring 0)

  just before the system locks. Different ring numbers are reported as
  stalling at different times.

  As per the instructions, I posted a question about this issue at:

  https://askubuntu.com/questions/937792/system-lockup-radeon-ring-
  stalled-for-more-than-10280msec?noredirect=1#comment1486875_937792

  but I have not received many responses.

  I'm running 16.04 LTS. 
  :~$ lsb_release -rd
  Description:  Ubuntu 16.04.2 LTS
  Release:      16.04

  According to the Software Center, I am running Ubuntu Software 3.20.1.

  I have a Radeon HD graphics card.

  :~$ lspci | grep VGA
  03:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] 
Cedar [Radeon HD 5000/6000/7350/8350 Series]

  :~$ lspci -v -s 03:00.0
  03:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] 
Cedar [Radeon HD 5000/6000/7350/8350 Series] (prog-if 00 [VGA controller])
  Subsystem: Gigabyte Technology Co., Ltd Cedar [Radeon HD 5000/6000/7350/8350 
Series]
  Flags: bus master, fast devsel, latency 0, IRQ 53
  Memory at c0000000 (64-bit, prefetchable) [size=256M]
  Memory at d3d20000 (64-bit, non-prefetchable) [size=128K]
  I/O ports at 7000 [size=256]
  Expansion ROM at d3d00000 [disabled] [size=128K]
  Capabilities: <access denied>
  Kernel driver in use: radeon
  Kernel modules: radeon

  Please let me know if additional information would be useful, and I
  will be glad to provide it.  Thanks in advance.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-87-generic 4.4.0-87.110
  ProcVersionSignature: Ubuntu 4.4.0-87.110-generic 4.4.73
  Uname: Linux 4.4.0-87-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2.10
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  clapp      3889 F.... pulseaudio
   /dev/snd/controlC2:  clapp      3889 F.... pulseaudio
   /dev/snd/controlC1:  clapp      3889 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Mon Jul 31 14:02:27 2017
  HibernationDevice: RESUME=UUID=1b30dad6-8c48-42cf-ae26-66ab8b0eb446
  InstallationDate: Installed on 2013-09-04 (1425 days ago)
  InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
  MachineType: Dell Inc. Precision T7600
  ProcFB: 0 radeondrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-87-generic 
root=UUID=33722f76-37fd-4289-b071-d7f48b65dd32 ro quiet splash 
crashkernel=384M-:128M vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-87-generic N/A
   linux-backports-modules-4.4.0-87-generic  N/A
   linux-firmware                            1.157.11
  RfKill:
   0: hci0: Bluetooth
        Soft blocked: no
        Hard blocked: no
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 05/03/2013
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A07
  dmi.board.name: 082WXT
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A01
  dmi.chassis.type: 7
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: 
dmi:bvnDellInc.:bvrA07:bd05/03/2013:svnDellInc.:pnPrecisionT7600:pvr01:rvnDellInc.:rn082WXT:rvrA01:cvnDellInc.:ct7:cvr:
  dmi.product.name: Precision T7600
  dmi.product.version: 01
  dmi.sys.vendor: Dell Inc.

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