i915 corruption in 4.4.0-9

[Nafallo Bjälevik]

Hi Tim,

Text is getting corrupted in 4.4.0-9. I see changes have been made to the i915 driver. Booting on ABI 8 fixes the corruption.

This is very similar to what I saw: http://askubuntu.com/questions/584922/how-do-i-fix-fonts-not-rendering-and-missing-letters

I would deem this release critical, if reproducible. I'm on Lenovo x201.

Cheers,
Nafallo
---
ApportVersion: 2.20-0ubuntu3
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: nafallo 1756 F.... pulseaudio
CurrentDesktop: Unity
DistroRelease: Ubuntu 16.04
EcryptfsInUse: Yes
HibernationDevice: RESUME=/dev/sda1
InstallationDate: Installed on 2010-07-31 (2043 days ago)
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100429)
MachineType: LENOVO 3323DAG
Package: linux (not installed)
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-10-generic root=UUID=351c5a62-d053-42ec-bfa7-6c3d3a0d6077 ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 4.4.0-10.25-generic 4.4.3
RelatedPackageVersions:
 linux-restricted-modules-4.4.0-10-generic N/A
 linux-backports-modules-4.4.0-10-generic N/A
 linux-firmware 1.156
Tags: xenial xenial xenial
Uname: Linux 4.4.0-10-generic x86_64
UnreportableReason: The report belongs to a package that is not installed.
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare users
_MarkForUpload: False
dmi.bios.date: 10/26/2010
dmi.bios.vendor: LENOVO
dmi.bios.version: 6QET61WW (1.31 )
dmi.board.name: 3323DAG
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvr6QET61WW(1.31):bd10/26/2010:svnLENOVO:pn3323DAG:pvrThinkPadX201:rvnLENOVO:rn3323DAG:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 3323DAG
dmi.product.version: ThinkPad X201
dmi.sys.vendor: LENOVO

[Nafallo Bjälevik (nafallo)]

Adding Tim Gardner, as listed in the changelog.

[Brad Figg (brad-figg)]

This bug is missing log files that will aid in diagnosing the problem. From a terminal window please run:

apport-collect 1552750

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

[Nafallo Bjälevik (nafallo)]

Will try to reproduce the bug again before collecting the report.

[Tim Gardner (timg-tpi)]

Nafallo - the big display change for 4.4.0-9 was 'UBUNTU: SAUCE: i915_bpo: Provide a backport driver for SKL, KBL & BXT graphics'. You'll need to provide at least the output of lspci in order for me to tell if you've got one of those displays. Can you boot to a functional kernel and run

apport-collect 1552750

[Nafallo Bjälevik (nafallo)]

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[Nafallo Bjälevik (nafallo)]

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[Nafallo Bjälevik (nafallo)]

 Hi Tim,

Information added, but I've yet to be able to reproduce this bug again. Colour me confused.

Cheers,
Nafallo

[Tim Gardner (timg-tpi)]

Marking invalid since this bug cannot be reproduced.

[NoBugs! (luke32j)]

I still see this on Intel 14.04 machine with 4.4.0-64-generic #85~14.04.1-Ubuntu. It happens in fairly random way quite often after close and open of the laptop.

Images may either not display: http://askubuntu.com/questions/850754/what-happened-to-my-dash-icons

or show up with garbling as in attached screenshot.

It may or may not be only the outer fullscreen restore button, as it always is at the moment. It showed in the upper right icon for awhile, it's like something is putting random junk in some random image memory location?