Muriel, the next step is to fully reverse commit bisect from kernel 4.4 to 4.6-rc6 in order to identify the last bad commit, followed immediately by the first good one. Once this good commit has been identified, it may be reviewed for backporting. Could you please do this following https://wiki.ubuntu.com/Kernel/KernelBisection#How_do_I_reverse_bisect_the_upstream_kernel.3F ?
Please note, finding adjacent kernel versions is not fully commit bisecting. After the fix commit (not kernel version) has been identified, then please mark this report Status Confirmed. Thank you for your understanding. Helpful bug reporting tips: https://wiki.ubuntu.com/ReportingBugs ** Tags added: kernel-fixed-upstream-4.6-rc6 latest-bios-1.50 needs- reverse-bisect ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete ** Attachment removed: "lspci.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1575651/+attachment/4648973/+files/lspci.txt ** Attachment removed: "JournalErrors.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1575651/+attachment/4648968/+files/JournalErrors.txt ** Attachment removed: "ProcEnviron.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1575651/+attachment/4648954/+files/ProcEnviron.txt ** Attachment removed: "Dependencies.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1575651/+attachment/4648952/+files/Dependencies.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: 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) - 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. 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 : [email protected] Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp

