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[Launchpad Bug Tracker <1522922@xxxxxxxxxxxxxxxxxx>]

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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.

** Affects: nouveau
     Importance: Medium
         Status: Incomplete

** Affects: xserver-xorg-video-intel (Ubuntu)
     Importance: High
         Status: Triaged


** Tags: amd64 apport-bug wily
-- 
Screen flickering in Intel i915 driver
https://bugs.launchpad.net/bugs/1522922
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