apport information ** Tags added: apport-collected
** Description changed: 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. 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. ** Attachment added: "AlsaInfo.txt" https://bugs.launchpad.net/bugs/1575651/+attachment/4651957/+files/AlsaInfo.txt -- 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: Confirmed 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. 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