No HDMI output

[Andrey Gadyukov]

No HDMI source seen on newer kernel (3.19.0-18).

HDMI audio worked before upgrading.

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: linux-image-3.19.0-18-generic 3.19.0-18.18
ProcVersionSignature: Ubuntu 3.19.0-18.18-generic 3.19.6
Uname: Linux 3.19.0-18-generic x86_64
ApportVersion: 2.17.2-0ubuntu1.1
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC1: drone 9602 F.... pulseaudio
CRDA:
 country RU: DFS-UNSET
  (2402 - 2482 @ 40), (N/A, 20), (N/A)
  (5735 - 5835 @ 20), (N/A, 30), (N/A)
CurrentDesktop: Unity
Date: Sat May 23 21:51:34 2015
InstallationDate: Installed on 2015-05-22 (0 days ago)
InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
MachineType: MSI MS-7920
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-18-generic.efi.signed root=UUID=56ef5b28-d8ae-4452-a94b-d15037ce8c75 ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-3.19.0-18-generic N/A
 linux-backports-modules-3.19.0-18-generic N/A
 linux-firmware 1.143.1
RfKill:
 0: phy0: Wireless LAN
  Soft blocked: no
  Hard blocked: no
SourcePackage: linux
UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev'
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/08/2015
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: V10.1
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: Z97I GAMING ACK (MS-7920)
dmi.board.vendor: MSI
dmi.board.version: 2.0
dmi.chassis.asset.tag: To be filled by O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: MSI
dmi.chassis.version: 2.0
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrV10.1:bd01/08/2015:svnMSI:pnMS-7920:pvr2.0:rvnMSI:rnZ97IGAMINGACK(MS-7920):rvr2.0:cvnMSI:ct3:cvr2.0:
dmi.product.name: MS-7920
dmi.product.version: 2.0
dmi.sys.vendor: MSI

[Brad Figg (brad-figg)]

This change was made by a bot.

[penalvch (penalvch)]

Andrey Gadyukov, thank you for reporting this and helping make Ubuntu better. Could you please test the latest upstream kernel available from the very top line at the top of the page (the release names are irrelevant for testing, and please do not test the daily folder) following https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow additional upstream developers to examine the issue.

If the test did not allow you to test to the issue (ex. you couldn't boot into the OS) please make a comment in your report about this, and continue to test the next most recent kernel version until you can test to the issue. Once you've tested the upstream kernel, please comment on which kernel version specifically you tested. If this bug is fixed in the mainline kernel, please add the following tags by clicking on the yellow circle with a black pencil icon, next to the word Tags, located at the bottom of the report description:
kernel-fixed-upstream
kernel-fixed-upstream-X.Y-rcZ

Where XY and Z are numbers corresponding to the kernel version.

If the mainline kernel does not fix this bug, please add the following tags:
kernel-bug-exists-upstream
kernel-bug-exists-upstream-X.Y-rcZ

Once testing of the upstream kernel is complete, please mark this bug's Status as Confirmed. Please let us know your results.

Thank you for your understanding.

[penalvch (penalvch)]

Andrey Gadyukov, the next step is to fully reverse commit bisect from kernel 3.19 to 4.1-rc4 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