kscreen reports change of primary screen without apparent reason

[Bruce Wolfe]

Screen blanks out to black frequently for no apparent reason no matter how short or long the session. Also, in the items attached below was created using "xdiagnose". It didn't include SDDM.log which I am using but instead LightDM which I am *not* using.

=============================

From Xorg.0.log:

Mar 22 21:53:53 HINGE11 org.kde.KScreen[2724]: message repeated 15 times: [ kscreen: Primary output changed from KScreen::Output(Id: 591 , Name: "HDMI-0" ) ( "HDMI-0" ) to KScreen::Output(Id: 591 , Name: "HDMI-0" ) ( "HDMI-0" )]

======================
ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: xorg 1:7.7+7ubuntu4
ProcVersionSignature: Ubuntu 4.2.0-34.39-generic 4.2.8-ckt4
Uname: Linux 4.2.0-34-generic x86_64
NonfreeKernelModules: nvidia
.proc.driver.nvidia.registry: Binary: ""
.proc.driver.nvidia.version:
 NVRM version: NVIDIA UNIX x86_64 Kernel Module 340.96 Sun Nov 8 22:33:28 PST 2015
 GCC version: gcc version 5.2.1 20151010 (Ubuntu 5.2.1-22ubuntu2)
ApportVersion: 2.19.1-0ubuntu5
Architecture: amd64
Date: Tue Mar 22 21:52:10 2016
DistUpgraded: Fresh install
DistroCodename: wily
DistroVariant: ubuntu
GraphicsCard:
 NVIDIA Corporation GT216 [GeForce GT 220] [10de:0a20] (rev a2) (prog-if 00 [VGA controller])
   Subsystem: Gigabyte Technology Co., Ltd Device [1458:34d6]
InstallationDate: Installed on 2012-09-14 (1286 days ago)
InstallationMedia: Kubuntu 12.04.1 LTS "Precise Pangolin" - Release amd64 (20120820.1)
LightdmGreeterLog:
 QInotifyFileSystemWatcherEngine::addPaths: inotify_add_watch failed: No such file or directory
 QFileSystemWatcher: failed to add paths: /var/lib/lightdm/.config/ibus/bus
 Bus::open: Can not get ibus-daemon's address.
 IBusInputContext::createInputContext: no connection to ibus-daemon
LightdmGreeterLogOld:
 QInotifyFileSystemWatcherEngine::addPaths: inotify_add_watch failed: No such file or directory
 QFileSystemWatcher: failed to add paths: /var/lib/lightdm/.config/ibus/bus
 Bus::open: Can not get ibus-daemon's address.
 IBusInputContext::createInputContext: no connection to ibus-daemon
MachineType: Gigabyte Technology Co., Ltd. GA-990XA-UD3
ProcEnviron:
 LANGUAGE=en_US
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.2.0-34-generic root=UUID=bfef49a0-28c1-480e-95b6-b010e6f905a8 ro quiet splash nomodeset vt.handoff=7
SourcePackage: xorg
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 10/13/2011
dmi.bios.vendor: Award Software International, Inc.
dmi.bios.version: F9
dmi.board.name: GA-990XA-UD3
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.board.version: x.x
dmi.chassis.type: 3
dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
dmi.modalias: dmi:bvnAwardSoftwareInternational,Inc.:bvrF9:bd10/13/2011:svnGigabyteTechnologyCo.,Ltd.:pnGA-990XA-UD3:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnGA-990XA-UD3:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr:
dmi.product.name: GA-990XA-UD3
dmi.sys.vendor: Gigabyte Technology Co., Ltd.
version.compiz: compiz N/A
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.65+git20151026.c745e541-0ubuntu0ricotz~wily
version.libgl1-mesa-dri: libgl1-mesa-dri 11.0.4~git20151026+11.0.ec14e6f8-0ubuntu0ricotz~wily
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 11.0.4~git20151026+11.0.ec14e6f8-0ubuntu0ricotz~wily
version.nvidia-graphics-drivers: nvidia-graphics-drivers-* N/A
version.xserver-xorg-core: xserver-xorg-core 2:1.17.2-1ubuntu9.1
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.2-1ubuntu1
version.xserver-xorg-video-ati: xserver-xorg-video-ati N/A
version.xserver-xorg-video-intel: xserver-xorg-video-intel N/A
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau N/A
xserver.bootTime: Tue Mar 22 21:31:59 2016
xserver.configfile: /etc/X11/xorg.conf
xserver.errors:

xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:

xserver.version: 2:1.17.2-1ubuntu9.1

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[.kkursor (kkursor-3es)]

Affects me too.
Computer is completely unusable, the bug is critical I think. :(

Kubuntu 16.04 with all updates, nvidia-340 (the same stuff with open drivers),
kkursor@remotehost:~$ lspci | grep VGA
00:02.0 VGA compatible controller: Intel Corporation Core Processor Integrated Graphics Controller (rev 02)
02:00.0 VGA compatible controller: NVIDIA Corporation GT218M [GeForce 310M] (rev a2)

kkursor@remotehost:~$ uname -a
Linux remotehost 4.4.0-22-generic #40-Ubuntu SMP Thu May 12 22:03:46 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux

On my laptop the screen shuts off frequently with same messages in logs, and I noticed - when it's off, when I press any of the F* buttons, the laptop suspends.

[joneall (joneall-alumni)]

Same pb with Kubuntu 16.04. Have nvidea card but not using their driver.

A similar (same?) but is reported "resolved fixed" at https://bugs.kde.org/show_bug.cgi?id=355928, but there is no indication of how to get the fix. I did a dist-upgrade yesterday.

[Lars Kollstedt (lk-x)]

Hello together,

this seems to affect me, too. On Ubuntu 16.4 LTS.

Lots off Syslog lines with:
Feb 2 12:44:01 ws-kollstedt org.kde.KScreen[1925]: kscreen: Primary output changed from KScreen::Output(Id: 638 , Name: "DVI-I-1" ) ( "DVI-I-1" ) to KScreen::Output(Id: 638 , Name: "DVI-I-1" ) ( "DVI-I-1" )
Feb 2 12:44:01 ws-kollstedt org.kde.KScreen[1925]: kscreen: Primary output changed from KScreen::Output(Id: 638 , Name: "DVI-I-1" ) ( "DVI-I-1" ) to KScreen::Output(Id: 638 , Name: "DVI-I-1" ) ( "DVI-I-1" )

Changes from and to seems to be the same.

Possible side effect, but Im not sure it correlates:
Sometimes the Screen freezes, and after appox 30 seconds the System reboots.

Usually it still works. The toggeling Screen was something i experienced on 2016-11-07, I resolved this by switching to the nvidia-367 package.

root@ws-kollstedt:/home/kollstedt# lshw
[...]
product: GF119 [GeForce GT 610]
vendor: NVIDIA Corporation
[...]

root@ws-kollstedt:/home/kollstedt# aptitude search nvidia | egrep '^i'
i nvidia-367 - Transitional package for nvidia-375
i A nvidia-375 - Transitional package for nvidia-384
i A nvidia-384 - NVIDIA binary driver - version 384.111
i nvidia-modprobe - utility to load NVIDIA kernel modules and
i A nvidia-opencl-icd-384 - NVIDIA OpenCL ICD
i A nvidia-prime - Tools to enable NVIDIA's Prime
i nvidia-settings - Tool for configuring the NVIDIA graphics d

root@ws-kollstedt:/home/kollstedt# uname -a
Linux ws-kollstedt 4.4.0-112-generic #135-Ubuntu SMP Fri Jan 19 11:48:36 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux

Not sure obout the reasons, this looks for me only like the symptoms. ;-)

Kind regards,
    Lars

[Daniel van Vugt (vanvugt)]

Thank you for reporting this bug to Ubuntu.
Ubuntu 15.10 (wily) reached end-of-life on July 28, 2016.

See this document for currently supported Ubuntu releases:
https://wiki.ubuntu.com/Releases

We appreciate that this bug may be old and you might not be interested in discussing it any more. But if you are then please upgrade to the latest Ubuntu version and re-test. If you then find the bug is still present in the newer Ubuntu version, please add a comment here telling us which new version it is in and change the bug status to Confirmed.