GUI failure when reinserting HDMI cable with Intel driver

[Vihai]

Hello,

Removing the HDMI cable on my ASUS UN42 results in EDID failure which might be only cosmetic, however inserting the cable again causes the crash of the whole GUI segfaulting several KDE daemons.

Manually restarting SDDM restores the GUI.

[ 253.213048] [drm:drm_edid_block_valid [drm]] *ERROR* EDID checksum is invalid, remainder is 131
[ 253.213054] Raw EDID:
[ 253.213057] 00 ff ff ff ff ff ff 00 00 ff ff ff ff ff ff ff
[ 253.213059] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 253.213061] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 253.213063] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 253.213064] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 253.213066] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 253.213067] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 253.213069] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 254.121987] kactivitymanage[1974]: segfault at 18 ip 00007fa0e1ab5e90 sp 00007fff6e0fd838 error 4 in libqxcb.so[7fa0e1a87000+b5000]
[ 256.098834] krunner[3198]: segfault at 18 ip 00007f9462a2dde8 sp 00007fffd77df1e0 error 4 in libqxcb.so[7f94629e4000+b5000]
[ 256.099437] plasmashell[3202]: segfault at 18 ip 00007f83832b7de8 sp 00007ffc196c3040 error 4 in libqxcb.so[7f838326e000+b5000]
[ 256.207770] kwin_x11[3206]: segfault at 18 ip 00007f008cef3de8 sp 00007ffe6e2b2fe0 error 4 in libqxcb.so[7f008ceaa000+b5000]
[ 256.978766] klauncher[3218]: segfault at 18 ip 00007f9e27d2dde8 sp 00007ffff381b7e0 error 4 in libqxcb.so[7f9e27ce4000+b5000]

ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: linux-image-generic 4.2.0.10.10
ProcVersionSignature: Ubuntu 4.2.0-10.12-generic 4.2.0
Uname: Linux 4.2.0-10-generic x86_64
ApportVersion: 2.18.1-0ubuntu1
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: imprinter 2022 F.... pulseaudio
 /dev/snd/controlC1: imprinter 2022 F.... pulseaudio
Date: Tue Sep 22 14:02:09 2015
HibernationDevice: RESUME=UUID=1367d85c-1b0b-440b-82ca-c772a6f0d0f9
InstallationDate: Installed on 2015-09-14 (7 days ago)
InstallationMedia: Kubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
MachineType: ASUSTeK COMPUTER INC. UN42
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-10-generic.efi.signed root=UUID=3b965d33-cb79-47b5-afde-2d45e3ac7050 ro noprompt persistent quiet splash vt.handoff=7
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
 linux-restricted-modules-4.2.0-10-generic N/A
 linux-backports-modules-4.2.0-10-generic N/A
 linux-firmware 1.148
SourcePackage: linux
UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev'
UpgradeStatus: Upgraded to wily on 2015-09-18 (3 days ago)
dmi.bios.date: 10/13/2014
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 0221
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: UN42
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: To be filled by O.E.M.
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: To Be Filled By O.E.M.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0221:bd10/13/2014:svnASUSTeKCOMPUTERINC.:pnUN42:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnUN42:rvrTobefilledbyO.E.M.:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
dmi.product.name: UN42
dmi.product.version: System Version
dmi.sys.vendor: ASUSTeK COMPUTER INC.

[Vihai (daniele-orlandi)]

Addendum: This happens consistently using a KVM and switching from one system to another.

[Brad Figg (brad-figg)]

This change was made by a bot.

[Joseph Salisbury (jsalisbury)]

Did this issue start happening after an update/upgrade? Was there a prior kernel version where you were not having this particular problem?

Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.3 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/v4.3-rc2-unstable/

[Vihai (daniele-orlandi)]

The issue started when I upgraded from wily. Booting the previous kernel solves the issue.

I tried with the latest 4.3 kernel and the problem seems to be fixed, both the EDID messages and the X11/GUI processes are not crashing anymore.

[Vihai (daniele-orlandi)]

Christopher, I see you added a "bios-outdated" tag and I promptly updated the BIOS to 0802 however this specific issue wasn't fixed by the BIOS update.

[penalvch (penalvch)]

Vihai, the next step is to fully reverse commit bisect from kernel 3.19 to 4.3-rc2 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.

Thank you for your understanding.

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

[Vihai (daniele-orlandi)]

Christopher, I'm sorry but I don't have enough spare time to search for the commit :(

[Launchpad Janitor (janitor)]

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

[kay (kay-diam)]

I have similar bug on the latest development Xenial.

[penalvch (penalvch)]

kay, it will help immensely if you filed a new report with the Ubuntu repository kernel (not a third party kernel) via a terminal:
ubuntu-bug linux

Please feel free to subscribe me to it.

For more on why this is helpful, please see https://wiki.ubuntu.com/ReportingBugs.