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[Radoslaw <1326567@xxxxxxxxxxxxxxxxxx>]

Looking at the description of above macros at ./include/drm/drmP.h the
logging is active only when drm.debug kernel option is set. Indeed I
found this option in my /etc/default/grub file:

GRUB_CMDLINE_LINUX_DEFAULT="plymouth:debug splash quiet drm.debug=0xe"

It seems the option is not default in recent Ubuntu release (at least
14.04), becouse restoring content of the file to default makes the line
look like this:

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"

How the drm.debug option did get to the configuration file I don't know.
Maybe this is remainder from prevoius Ubuntu release ant stayed after
upgrade ?

Thus there is no need to recompile kernel modules, just remove the
drm.debug kernel option from /etc/grub/default and regenerate grub
configuration with update-grub.

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https://bugs.launchpad.net/bugs/1326567

Title:
  [Asus M4A88T-M] problem with drm:drm_mode_addfb and
  drm:radeon_crtc_page_flip

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  My kern log is full of literally millions of entries like this:

  Jun  1 07:51:05 atkinson-phenomIIx4 kernel: [119346.952590] [drm:drm_mode_addfb], [FB:58]
  Jun  1 07:51:05 atkinson-phenomIIx4 kernel: [119346.952610] [drm:radeon_crtc_page_flip], flip-ioctl() cur_fbo = ffff8803de155400, cur_bbo = ffff880407586000
  Jun  1 07:51:05 atkinson-phenomIIx4 kernel: [119346.952632] [drm:radeon_crtc_page_flip], flip-ioctl() cur_fbo = ffff8803de155400, cur_bbo = ffff880407586000

  
  I have found places where other have the problem.  But none seem to fix the problem.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-27-generic 3.13.0-27.50
  ProcVersionSignature: Ubuntu 3.13.0-27.50-generic 3.13.11
  Uname: Linux 3.13.0-27-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.2
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC2:  oatkinson   3117 F.... pulseaudio
   /dev/snd/controlC1:  oatkinson   3117 F.... pulseaudio
   /dev/snd/controlC0:  oatkinson   3117 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Wed Jun  4 16:21:04 2014
  HibernationDevice: RESUME=UUID=17c46ec6-2541-4e10-9ec2-258d229f3bd8
  InstallationDate: Installed on 2011-08-19 (1020 days ago)
  InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
  IwConfig:
   eth0      no wireless extensions.
   
   lo        no wireless extensions.
  MachineType: System manufacturer System Product Name
  ProcFB: 0 radeondrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-27-generic root=UUID=3a8918dc-2e21-42ab-8e62-106b9b8f895e ro vesafb.invalid=1 drm.debug=0xe nopat plymouth:debug
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-27-generic N/A
   linux-backports-modules-3.13.0-27-generic  N/A
   linux-firmware                             1.127.2
  RfKill:
   
  SourcePackage: linux
  StagingDrivers: zram
  UpgradeStatus: Upgraded to trusty on 2014-04-18 (47 days ago)
  dmi.bios.date: 12/23/2010
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 2403
  dmi.board.asset.tag: To Be Filled By O.E.M.
  dmi.board.name: M4A88T-M
  dmi.board.vendor: ASUSTeK Computer INC.
  dmi.board.version: Rev X.0x
  dmi.chassis.asset.tag: Asset-1234567890
  dmi.chassis.type: 3
  dmi.chassis.vendor: Chassis Manufacture
  dmi.chassis.version: Chassis Version
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr2403:bd12/23/2010:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnM4A88T-M:rvrRevX.0x:cvnChassisManufacture:ct3:cvrChassisVersion:
  dmi.product.name: System Product Name
  dmi.product.version: System Version
  dmi.sys.vendor: System manufacturer

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