Public bug reported:
Additional info:
lsb_release:
Description: Ubuntu 16.04.1 LTS
Release: 16.04
I'm using an external monitor attached via VGA (seen as DP2 in xrandr output)
in an extended desktop configuration (not cloned). Whenever the X session
starts some kind of screen saving (for example, after locking the screen), the
external monitor and the laptop screen both go to a saving power state.
After that, If I try to wake them up (moving cursor, touch keys, etc.),
only the laptop's panel goes back. The external monitor stays in a
suspended state. If I force it to wake up and scan inputs, it doesn't
find any, and it doesn't appear as conencted in xrandr otput.
The only way I've found to wake it up is by performing the following
sequence of operations:
ALT+F1 [switch to first tty/console] --> this does wake up and activate the
monitor, mirroring
login as my user
$ xrandr -d :0 #DP2 still doesn't appear
logout
ALT+F7 [go back to X]
At this point, the external monitor is working and X detects it and re-
enables the extended desktop
Doing just ALT+F1/ALT+F7, doesn't work (I need to execute xrandr in
order to make the whole thing work)
Doing xrandr from the graphical environment (directly in a xterminal in
the Xsession) doesn't wake up the monitor
Looks like there's no need to add any addictional operation/parameter to
xrandr in order to make this process work, no need to set output
settings, etc. Just issue "xrandr -d :0" and things magically work
Thanks in advance
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: xorg 1:7.7+13ubuntu3
ProcVersionSignature: Ubuntu 4.4.0-62.83-generic 4.4.40
Uname: Linux 4.4.0-62-generic x86_64
NonfreeKernelModules: zfs zunicode zcommon znvpair zavl
.tmp.unity_support_test.0:
ApportVersion: 2.20.1-0ubuntu2.5
Architecture: amd64
CompizPlugins: No value set for
`/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: compiz
CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
CompositorUnredirectFSW: true
CurrentDesktop: Unity
Date: Tue Feb 14 10:54:19 2017
DistUpgraded: Fresh install
DistroCodename: xenial
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes, if not too technical
GraphicsCard:
Intel Corporation Sky Lake Integrated Graphics [8086:1916] (rev 07) (prog-if
00 [VGA controller])
Subsystem: Hewlett-Packard Company Skylake Integrated Graphics [103c:8079]
MachineType: HP HP EliteBook 840 G3
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-62-generic
root=ZFS=rpool/ROOT/ubuntu ro boot=zfs quiet splash vt.handoff=7
SourcePackage: xorg
Symptom: display
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 03/22/2016
dmi.bios.vendor: HP
dmi.bios.version: N75 Ver. 01.05
dmi.board.name: 8079
dmi.board.vendor: HP
dmi.board.version: KBC Version 85.61
dmi.chassis.asset.tag: 5CG6247TWJ
dmi.chassis.type: 10
dmi.chassis.vendor: HP
dmi.modalias:
dmi:bvnHP:bvrN75Ver.01.05:bd03/22/2016:svnHP:pnHPEliteBook840G3:pvr:rvnHP:rn8079:rvrKBCVersion85.61:cvnHP:ct10:cvr:
dmi.product.name: HP EliteBook 840 G3
dmi.sys.vendor: HP
version.compiz: compiz 1:0.9.12.2+16.04.20160823-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.67-1ubuntu0.16.04.2
version.libgl1-mesa-dri: libgl1-mesa-dri 11.2.0-1ubuntu2.2
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 11.2.0-1ubuntu2.2
version.xserver-xorg-core: xserver-xorg-core 2:1.18.4-0ubuntu0.2
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.1-1ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.7.0-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel
2:2.99.917+git20160325-1ubuntu1.2
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.12-1build2
xserver.bootTime: Tue Feb 14 10:49:09 2017
xserver.configfile: default
xserver.errors:
xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:
product id 5312
vendor CMN
xserver.version: 2:1.18.4-0ubuntu0.2
** Affects: xorg (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug compiz-0.9 external monitor sleep ubuntu xenial xrandr
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https://bugs.launchpad.net/bugs/1664501
Title:
Unable to wake up monitor after it goes to sleep (after locking x
session, for example)
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