HDMI no longer available

[Joachim Mathes]

As of linux image linux-image-3.13.0-62-generic the HDMI port of my Dell Inspiron 15 stopped working:

$ xrandr
Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 32767 x 32767
eDP1 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 344mm x 194mm
   3840x2160 60.0 + 48.0
   2048x1536 60.0
   1920x1440 60.0
   1856x1392 60.0
   1792x1344 60.0
   1920x1200 60.0
   1920x1080 59.9*
   1600x1200 60.0
   1680x1050 60.0 59.9
   1600x1024 60.2
   1400x1050 60.0
   1280x1024 60.0
   1440x900 59.9
   1280x960 60.0
   1360x768 59.8 60.0
   1152x864 60.0
   1024x768 60.0
   800x600 60.3 56.2
   640x480 59.9
VIRTUAL1 disconnected (normal left inverted right x axis y axis)

The only thing I could do was downgrading the image:
$ sudo apt-get install linux-image-3.13.0-61-generic
$ xrandr
Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 32767 x 32767
eDP1 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 344mm x 194mm
   3840x2160 60.0 + 48.0
   2048x1536 60.0
   1920x1440 60.0
   1856x1392 60.0
   1792x1344 60.0
   1920x1200 60.0
   1920x1080 59.9*
   1600x1200 60.0
   1680x1050 60.0 59.9
   1600x1024 60.2
   1400x1050 60.0
   1280x1024 60.0
   1440x900 59.9
   1280x960 60.0
   1360x768 59.8 60.0
   1152x864 60.0
   1024x768 60.0
   800x600 60.3 56.2
   640x480 59.9
HDMI1 disconnected (normal left inverted right x axis y axis)
VIRTUAL1 disconnected (normal left inverted right x axis y axis)

Will this be fixed with the next linux image update? Otherwise, I have to pin the current version.

Best
Joachim

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.13.0-62-generic 3.13.0-62.102
ProcVersionSignature: Ubuntu 3.13.0-62.102-generic 3.13.11-ckt24
Uname: Linux 3.13.0-62-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.12
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: ry28 2715 F.... pulseaudio
 /dev/snd/controlC1: ry28 2715 F.... pulseaudio
CurrentDesktop: Unity
Date: Mon Aug 31 21:08:16 2015
HibernationDevice: RESUME=UUID=fb43d083-b016-4ee5-b7de-2031c0989027
InstallationDate: Installed on 2015-02-12 (199 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
MachineType: Dell Inc. Inspiron 7548
ProcFB:
 0 inteldrmfb
 1 radeondrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-62-generic.efi.signed root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-3.13.0-62-generic N/A
 linux-backports-modules-3.13.0-62-generic N/A
 linux-firmware 1.127.15
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 11/19/2014
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A00
dmi.board.name: 0AM6R0
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: Not Specified
dmi.modalias: dmi:bvnDellInc.:bvrA00:bd11/19/2014:svnDellInc.:pnInspiron7548:pvrA00:rvnDellInc.:rn0AM6R0:rvrA00:cvnDellInc.:ct8:cvrNotSpecified:
dmi.product.name: Inspiron 7548
dmi.product.version: A00
dmi.sys.vendor: Dell Inc.

[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 1490689

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.

[Joseph Salisbury (jsalisbury)]

Would it be possible for you to test the latest upstream stable kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v3.13 stable 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'.

If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-unable-to-test-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/v3.13.11-ckt25-trusty/

[GoddamnNoise (goddamnnoise)]

I have the same problem with Ubuntu 14.04 and a Toshiba Satellite laptop. The HDMI output just disappeared from the xrandr command's output after updating Ubuntu.

Here it is the xrandr output:

Screen 0: minimum 8 x 8, current 1366 x 768, maximum 32767 x 32767
eDP1 connected primary 1366x768+0+0 (normal left inverted right x axis y axis) 344mm x 194mm
   1366x768 60.0*+
   1360x768 59.8 60.0
   1024x768 60.0
   800x600 60.3 56.2
   640x480 59.9
VIRTUAL1 disconnected (normal left inverted right x axis y axis)

I've previously reported the problem here: http://ubuntuforums.org/showthread.php?t=2294891

[GoddamnNoise (goddamnnoise)]

More related information (in case it could help):

uname -a
... 3.16.0-49-generic #65~14.04.1-Ubuntu SMP Wed Sep 9 10:03:23 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 14.04.3 LTS
Release: 14.04
Codename: trusty

[penalvch (penalvch)]

GoddamnNoise, FYI posting on ubuntuforums.org is not reporting a bug at all. If you want to post a bug report about your problem, please file one here on Launchpad via a terminal:
ubuntu-bug linux

Please feel free to subscribe me to it.

[GoddamnNoise (goddamnnoise)]

Hi Christopher,

Sorry, I didn't know how to post a bug here. I've posted a bug report and suscribed you to it: https://bugs.launchpad.net/ubuntu/+source/linux-lts-utopic/+bug/1496697

Thanks a lot for your help!.

[Joachim Mathes (joachim-mathes)]

As a matter of fact I discovered that kernel 3.13.0-61 was not the reason to make it work again, at least not the kernel itself. After rebooting the running kernel was still 3.13.0-62. But this time the HDMI worked. Maybe the process of installing had a certain side effect. I don't know. Now I am running kernel 3.13.0-63 without any problems.

[penalvch (penalvch)]

Joachim Mathes, this bug report is being closed due to your last comment https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1490689/comments/8 regarding this being fixed with an update. For future reference you can manage the status of your own bugs by clicking on the current status in the yellow line and then choosing a new status in the revealed drop down box. You can learn more about bug statuses at https://wiki.ubuntu.com/Bugs/Status. Thank you again for taking the time to report this bug and helping to make Ubuntu better. Please submit any future bugs you may find.