i915. graphics messed, only slide of the screen working

[Aapo Rantalainen]

Computer: EEEpc 701
VGA compatible controller: Intel Corporation Mobile 915GM/GMS/910GML Express Graphics Controller (rev 04)
Native resolution 800x480
linux-image-4.3.0-2-generic=4.3.0-2.11

Upgraded to the Xenial.

Happens every time when using Linux 4.3.0-2. As soon as X starts over half of the screen is messed (left side of the screen). Switching to the virtual terminal doesn't help, same area is messed in text mode.

Couple of workarounds:
*Booting Linux 4.2.0-22-generic
*Connecting external (VGA) monitor. Now both (internal+external) are working. External can be disconnected then.
*From grub boot to recovery (kernel 4.3.0-2), then resume. Now screen is working, but resolution is 640x480.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.3.0-2-generic 4.3.0-2.11
ProcVersionSignature: Ubuntu 4.2.0-22.27-generic 4.2.6
Uname: Linux 4.2.0-22-generic i686
ApportVersion: 2.19.3-0ubuntu2
Architecture: i386
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: aapo 1132 F.... pulseaudio
CurrentDesktop: XFCE
Date: Wed Jan 6 20:20:18 2016
HibernationDevice: RESUME=UUID=00d1e709-9f56-4502-b37b-4652fab29398
InstallationDate: Installed on 2014-12-01 (401 days ago)
InstallationMedia: Xubuntu 14.10 "Utopic Unicorn" - Release i386 (20141022.1)
MachineType: ASUSTeK Computer INC. 701SD
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-22-generic root=UUID=07b17b31-54fe-4035-bc77-962229dbe682 ro forcepae quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-4.2.0-22-generic N/A
 linux-backports-modules-4.2.0-22-generic N/A
 linux-firmware 1.154
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 03/02/2009
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 0802
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: 701SD
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: x.xx
dmi.chassis.asset.tag: 0x00000000
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTek Computer INC.
dmi.chassis.version: x.x
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0802:bd03/02/2009:svnASUSTeKComputerINC.:pn701SD:pvr0501:rvnASUSTeKComputerINC.:rn701SD:rvrx.xx:cvnASUSTekComputerINC.:ct10:cvrx.x:
dmi.product.name: 701SD
dmi.product.version: 0501
dmi.sys.vendor: ASUSTeK Computer INC.

[Aapo Rantalainen (aapo-rantalainen)]

Dmesg when booting Linux 4.3.0-2.11 normally without external monitor (bug triggers).

WARNING: CPU: 0 PID: 127 at /build/linux-YUgF4D/linux-4.3.0/drivers/gpu/drm/i915/intel_display.c:1389
assert_planes_disabled+0x100/0x140 [i915]()
plane B assertion failure, should be off on pipe B but is still active

[Joseph Salisbury (jsalisbury)]

Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.4 kernel[0].

If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'.

Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".

Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.4-rc8-wily

[Brad Figg (brad-figg)]

This change was made by a bot.

[Aapo Rantalainen (aapo-rantalainen)]

Kernel version 4.4.0-040400rc8-generic works.

---
I also tested kernel 4.3.0-5-generic from repository. Bug didn't trigger but it automatically forced lower resolution (640x480).

[penalvch (penalvch)]

Aapo Rantalainen, the next step is to fully reverse commit bisect from kernel 4.3 to 4.4-rc8 in order to identify the last bad commit, followed immediately by the first good one. Once this commit has been identified, then it may be reviewed as a candidate for backporting into your release. Could you please do this following https://wiki.ubuntu.com/Kernel/KernelBisection#How_do_I_reverse_bisect_the_upstream_kernel.3F ?

Please note, finding adjacent kernel versions is not fully commit bisecting.

After the fix commit (not kernel version) has been identified, then please mark this report Status Confirmed.

Thank you for your understanding.

Helpful bug reporting tips:
https://wiki.ubuntu.com/ReportingBugs

[Aapo Rantalainen (aapo-rantalainen)]

Seems Xenial will be released with Kernel v4.4 [ https://wiki.ubuntu.com/KernelTeam/Newsletter/2015-12-15 ].
And older Ubuntu releases will use v4.2 (which is not affected by this bug).
Maybe it is useless to track this v4.3 issue (specially if no one else encounters it).

[Launchpad Janitor (janitor)]

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]