touch-packages team mailing list archive

[Furniss-tom <1522922@xxxxxxxxxxxxxxxxxx>]

Created attachment 120919
syslog for 3 patches with increased debug

Hi Mika

No problem.  I applied the following patches to the latest drm-intel-nightly:
https://patchwork.freedesktop.org/patch/69394/
https://patchwork.freedesktop.org/patch/69395/
https://patchwork.freedesktop.org/patch/69396/
https://bugs.freedesktop.org/attachment.cgi?id=120893

As expected, flickering is still present.  syslog attached.

The last patch that fixed the issue was this:
https://patchwork.freedesktop.org/patch/66697/
Is there a reason we're not using it now?

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https://bugs.launchpad.net/bugs/1522922

Title:
  Screen flickering in Intel i915 driver

Status in Nouveau Xorg driver:
  Incomplete
Status in libdrm package in Ubuntu:
  Confirmed

Bug description:
  There's an upstream bug reported here
  https://bugs.freedesktop.org/show_bug.cgi?id=91393 that causes screen
  flickering when using the Intel i915 builtin driver (at resolutions
  lower than the maximal one).

  I think that it will be fixed in newer kernel versions, but for the
  time being, as reported here
  https://bugs.freedesktop.org/show_bug.cgi?id=91393#c25 (and as
  personally tested) reverting those two commits fixes the problem.

  Would that be possible to release a fixed version for the 4.2.0
  stream?

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: linux-image-4.2.0-19-generic 4.2.0-19.23
  ProcVersionSignature: Ubuntu 4.2.0-19.23-generic 4.2.6
  Uname: Linux 4.2.0-19-generic x86_64
  ApportVersion: 2.19.1-0ubuntu5
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  bettini    1378 F.... pulseaudio
   /dev/snd/controlC1:  bettini    1378 F.... pulseaudio
  CurrentDesktop: KDE
  Date: Fri Dec  4 19:01:00 2015
  HibernationDevice: RESUME=UUID=7ddbc972-3ad6-40de-9313-2bb9395145f9
  InstallationDate: Installed on 2015-05-08 (210 days ago)
  InstallationMedia: Kubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
  MachineType: Dell Inc. Dell Precision M3800
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-19-generic root=UUID=dd2c7064-53b9-4720-96ab-5e8a3f2db3ea ro noprompt quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-4.2.0-19-generic N/A
   linux-backports-modules-4.2.0-19-generic  N/A
   linux-firmware                            1.149.3
  SourcePackage: linux
  UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev'
  UpgradeStatus: Upgraded to wily on 2015-11-07 (26 days ago)
  dmi.bios.date: 08/17/2015
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A10
  dmi.board.name: Dell Precision M3800
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A10
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.chassis.version: Not Specified
  dmi.modalias: dmi:bvnDellInc.:bvrA10:bd08/17/2015:svnDellInc.:pnDellPrecisionM3800:pvrA10:rvnDellInc.:rnDellPrecisionM3800:rvrA10:cvnDellInc.:ct8:cvrNotSpecified:
  dmi.product.name: Dell Precision M3800
  dmi.product.version: A10
  dmi.sys.vendor: Dell Inc.

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