** Changed in: linux (Ubuntu Xenial)
       Status: In Progress => Fix Committed

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https://bugs.launchpad.net/bugs/1600092

Title:
  radeon: monitor connected to onboard VGA doesn't work with Xenial

Status in linux package in Ubuntu:
  Fix Released
Status in linux source package in Xenial:
  Fix Committed
Status in linux source package in Yakkety:
  Fix Released

Bug description:
  Ubuntu recognizes the VGA monitor it but it does not show anything.
  Monitor works fine during initial boot/BIOS.

  dmesg says:
  [    3.311243] [drm] Initialized radeon 2.43.0 20080528 for 0000:00:01.0 on 
minor 0
  [   16.843630] [drm:radeon_dp_link_train [radeon]] *ERROR* clock recovery 
reached max voltage
  [   16.843663] [drm:radeon_dp_link_train [radeon]] *ERROR* clock recovery 
failed

  Fix commit:
  
https://github.com/torvalds/linux/commit/c8213a638f65bf487c10593c216525952cca3690

  I built a packaged kernel from xenial git source plus that one commit,
  and when I boot that kernel, the monitor in the VGA port works fine.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-24-generic 4.4.0-24.43
  ProcVersionSignature: Ubuntu 4.4.0-24.43-generic 4.4.10
  Uname: Linux 4.4.0-24-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2.1
  Architecture: amd64
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/dsp1', 
'/dev/snd/by-path', '/dev/snd/hwC1D0', '/dev/snd/pcmC1D2c', 
'/dev/snd/pcmC1D1p', '/dev/snd/pcmC1D0c', '/dev/snd/pcmC1D0p', 
'/dev/snd/controlC1', '/dev/snd/hwC0D0', '/dev/snd/pcmC0D3p', 
'/dev/snd/controlC0', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
  CurrentDesktop: Unity
  Date: Thu Jul  7 23:39:27 2016
  HibernationDevice: RESUME=UUID=5012a75e-a79a-46fa-94f7-db367d25b3f0
  InstallationDate: Installed on 2011-11-01 (1710 days ago)
  InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
  MachineType: Gigabyte Technology Co., Ltd. To be filled by O.E.M.
  ProcFB: 0 radeondrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-24-generic 
root=UUID=d13d1157-b660-43bb-a0af-fa8771808d10 ro quiet splash vt.handoff=7
  PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No 
PulseAudio daemon running, or not running as session daemon.
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-24-generic N/A
   linux-backports-modules-4.4.0-24-generic  N/A
   linux-firmware                            1.157.1
  RfKill:

  SourcePackage: linux
  UpgradeStatus: Upgraded to xenial on 2016-07-04 (4 days ago)
  dmi.bios.date: 05/28/2014
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: F5
  dmi.board.asset.tag: To be filled by O.E.M.
  dmi.board.name: F2A88X-D3H
  dmi.board.vendor: Gigabyte Technology Co., Ltd.
  dmi.board.version: x.x
  dmi.chassis.asset.tag: To Be Filled By O.E.M.
  dmi.chassis.type: 3
  dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
  dmi.chassis.version: To Be Filled By O.E.M.
  dmi.modalias: 
dmi:bvnAmericanMegatrendsInc.:bvrF5:bd05/28/2014:svnGigabyteTechnologyCo.,Ltd.:pnTobefilledbyO.E.M.:pvrTobefilledbyO.E.M.:rvnGigabyteTechnologyCo.,Ltd.:rnF2A88X-D3H:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvrToBeFilledByO.E.M.:
  dmi.product.name: To be filled by O.E.M.
  dmi.product.version: To be filled by O.E.M.
  dmi.sys.vendor: Gigabyte Technology Co., Ltd.

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