Looks very much like my problem here : https://bugs.launchpad.net/ubuntu/+source/unity/+bug/1577170
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1575651 Title: X stops responding to input on power saving mode Status in linux package in Ubuntu: Incomplete Bug description: 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) 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. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1575651/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
