Once my session has been locked and the screen off, Xserver stops responding to input ( I can still move the cursor). I can re-activate it by typing in a tty "xset dpms force on".
If I just lock the screen all works fine.
If I just turn off the monitor (xset dpms force off) all works fine.
The same system (kubuntu 16.04 64bit) on different hardware (nvidia) has no problem.
Symptoms:
After waking the screen from power saving/screensaver, the primary display wakes but X stops responding to input (the mouse cursor can still move, but clicking has no effect).
No errors in dmesg
Frequency/conditions:
Occurs almost every time the screen enters power saving + locked (possibly DPMS issue?)
The issue does NOT occur when running this kernel:
- linux-image-4.6.0-996-generic (4.6.0-996.201604262201)
- linux-image-4.6.0-040600rc6-generic_4.6.0-040600rc6
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: xserver-xorg-video-radeon 1:7.7.0-1
ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6
Uname: Linux 4.4.0-21-generic x86_64
ApportVersion: 2.20.1-0ubuntu2
Architecture: amd64
CurrentDesktop: KDE
Date: Wed Apr 27 14:00:52 2016
InstallationDate: Installed on 2016-04-27 (0 days ago)
InstallationMedia: Kubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
SourcePackage: xserver-xorg-video-ati
UpgradeStatus: No upgrade log present (probably fresh install)
---
ApportVersion: 2.20.1-0ubuntu2
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: mu 2199 F.... pulseaudio
/dev/snd/controlC0: mu 2199 F.... pulseaudio
CurrentDesktop: KDE
DistroRelease: Ubuntu 16.04
HibernationDevice: RESUME=UUID=28fb5b79-ea0d-4356-a118-aacacfa8e0af
InstallationDate: Installed on 2016-04-27 (3 days ago)
InstallationMedia: Kubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
IwConfig:
enp2s0 no wireless extensions.
lo no wireless extensions.
MachineType: To Be Filled By O.E.M. To Be Filled By O.E.M.
Package: linux-image-4.4.0-21-generic 4.4.0-21.37 [modified: boot/vmlinuz-4.4.0-21-generic]
PackageArchitecture: amd64
ProcFB: 0 radeondrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-21-generic.efi.signed root=UUID=393ef973-c324-4b1b-9bef-d6f55bcdd242 ro noprompt persistent quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6
RelatedPackageVersions:
linux-restricted-modules-4.4.0-21-generic N/A
linux-backports-modules-4.4.0-21-generic N/A
linux-firmware 1.157
RfKill:
Tags: xenial
Uname: Linux 4.4.0-21-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 04/29/2015
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: P1.50
dmi.board.name: AM1H-ITX
dmi.board.vendor: ASRock
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.:bvrP1.50:bd04/29/2015:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnASRock:rnAM1H-ITX:rvr:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
dmi.product.name: To Be Filled By O.E.M.
dmi.product.version: To Be Filled By O.E.M.
dmi.sys.vendor: To Be Filled By O.E.M.
This bug is missing log files that will aid in diagnosing the problem. From a terminal window please run:
apport-collect 1575651
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.