Christopher M. Penalver, Thank you for your help.
1) I was using Ubuntu 16.04 since July 2016, and 14.04 before. I think the problem appeared in spring or summer 2017 with an update. I do not remember since when I put the seconds display in the upper bar. I think already in 2014, but without warranty. In May 2017 I changed my hard disk from a 320 GB with Windows 10 in dual boot UEFI to a 1 TB without Windows, and made a fresh install of Ubuntu 16.04 only. I do not remember if the problem came at that time or later. There were many things to think about,... and other serious problems with the 16.04 (now solved) . 2) I clicked on your link about GNOME Flashback, tried a couple of clicks, but did not find the way to log in. How should I do? What is Metacity? On the video I joined notice that the blinking of the screen happens simultaneously with the display of the seconds. You can improve the description in this way. I discovered Ubuntu in April 2014. At the beginning it worked by me on a SD card (legacy) to see what it was about, and since that time I have learned a lot, and it is not finished. With Ubuntu/linux it is never finished. Le 15/02/2018 à 19:16, Christopher M. Penalver a écrit : > Pierre Wilch: > > 1) >> "So long I remember, this bug appeared before september 2017. No problem in >> year 2016." > What version of Ubuntu were you using in 2016 when this was not reproducible? > > 2) To further root cause, could you please test for this problem by logging > into a GNOME Flashback (Metacity) session via > https://launchpad.net/ubuntu/+source/gnome-flashback and advise to the > results? > > ** Description changed: > > - Ubuntu 16.04.3 LTS, every updates done. > - > Conditions: > - in the upper bar the display of the seconds must be enabled > - (in my case the entire date-and-time is displayed, excepted the week > number); > - - system has set himself automatically in sleep state after the selected > delay > - (in my case the option "lock the keyboard" is not enabled). > + (in my case the entire date-and-time is displayed, excepted the week > number); > + - system is set to automatically go into sleep state after the selected > delay > + (in my case the option "lock the keyboard" is not enabled). > On awakening, for example by using the shift touch, parts of the screen > are blinking according to 1 second rate and 3 seconds cycle. > - Coming back to normal behavior needs to close and re-open windows (no!, not > M$), etc... > + Coming back to normal behavior needs to close and re-open windows. > > To help to reproduce: > - edit a message with thunderbird; > - select ubuntu "parameters"; > - select "Luminosité & verrouillage" ("Brightness & keyboard locking"?); > - select "1 minute"; > - wait 1 minute and going into sleep state; > - when in sleep state press the "shift" key; > and then I have a blinking "Christmas tree", too complicated to be > described. > I tested it again 3 times why writing this post (firefox had also an > opened window, under thunderbird; with firefox alone, the screen blinks only > one time -should also not-). > - When the seconds are not displayed in the upper bar there is no problem. > > - Please do not blame me if xorg is not involved. A way to post had to be > found. > - 'apt-cache policy pkgname' with or without sudo: 'Impossible de trouver le > paquet pkgname'. > - --- > + WORKAROUND: When the seconds are not displayed in the upper bar there is > + no problem. > + > + --- > .tmp.unity_support_test.0: > - > + > ApportVersion: 2.20.1-0ubuntu2.15 > 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 > DistUpgraded: Fresh install > DistroCodename: xenial > DistroRelease: Ubuntu 16.04 > DistroVariant: ubuntu > ExtraDebuggingInterest: Yes > GraphicsCard: > - Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0156] > (rev 09) (prog-if 00 [VGA controller]) > - Subsystem: Toshiba America Info Systems 3rd Gen Core processor Graphics > Controller [1179:fb31] > + Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0156] > (rev 09) (prog-if 00 [VGA controller]) > + Subsystem: Toshiba America Info Systems 3rd Gen Core processor Graphics > Controller [1179:fb31] > InstallationDate: Installed on 2017-06-29 (223 days ago) > InstallationMedia: Ubuntu 16.04.2 LTS "Xenial Xerus" - Release amd64 > (20170215.2) > MachineType: TOSHIBA SATELLITE PRO C850-1GR > Package: xorg 1:7.7+13ubuntu3 > PackageArchitecture: amd64 > ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.13.0-32-generic.efi.signed > root=UUID=7169ec32-1674-4c34-b45b-2001ed412887 ro quiet splash vt.handoff=7 > ProcVersionSignature: Ubuntu 4.13.0-32.35~16.04.1-generic 4.13.13 > Tags: xenial ubuntu compiz-0.9 > Uname: Linux 4.13.0-32-generic x86_64 > UpgradeStatus: No upgrade log present (probably fresh install) > UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo > _MarkForUpload: True > dmi.bios.date: 10/01/2013 > dmi.bios.vendor: Insyde Corp. > dmi.bios.version: 6.80 > dmi.board.asset.tag: Type2 - Board Asset Tag > dmi.board.name: PLCSF8 > dmi.board.vendor: Intel > dmi.board.version: Type2 - Board Version > dmi.chassis.asset.tag: No Asset Tag > dmi.chassis.type: 10 > dmi.chassis.vendor: OEM Chassis Manufacturer > dmi.chassis.version: OEM Chassis Version > dmi.modalias: > dmi:bvnInsydeCorp.:bvr6.80:bd10/01/2013:svnTOSHIBA:pnSATELLITEPROC850-1GR:pvrPSCBXE-01T01GFR:rvnIntel:rnPLCSF8:rvrType2-BoardVersion:cvnOEMChassisManufacturer:ct10:cvrOEMChassisVersion: > dmi.product.family: Type1Family > dmi.product.name: SATELLITE PRO C850-1GR > dmi.product.version: PSCBXE-01T01GFR > dmi.sys.vendor: TOSHIBA > version.compiz: compiz 1:0.9.12.2+16.04.20160823-0ubuntu1 > version.ia32-libs: ia32-libs N/A > version.libdrm2: libdrm2 2.4.83-1~16.04.1 > version.libgl1-mesa-dri: libgl1-mesa-dri 17.2.4-0ubuntu1~16.04.4 > version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A > version.libgl1-mesa-glx: libgl1-mesa-glx 17.2.4-0ubuntu1~16.04.4 > version.xserver-xorg-core: xserver-xorg-core N/A > version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A > version.xserver-xorg-video-ati: xserver-xorg-video-ati N/A > version.xserver-xorg-video-intel: xserver-xorg-video-intel N/A > version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau N/A > -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1739322 Title: Hazardous displays when coming back from sleep state Status in xorg package in Ubuntu: Incomplete Bug description: Conditions: - in the upper bar the display of the seconds must be enabled (in my case the entire date-and-time is displayed, excepted the week number); - system is set to automatically go into sleep state after the selected delay (in my case the option "lock the keyboard" is not enabled). On awakening, for example by using the shift touch, parts of the screen are blinking according to 1 second rate and 3 seconds cycle. Coming back to normal behavior needs to close and re-open windows. To help to reproduce: - edit a message with thunderbird; - select ubuntu "parameters"; - select "Luminosité & verrouillage" ("Brightness & keyboard locking"?); - select "1 minute"; - wait 1 minute and going into sleep state; - when in sleep state press the "shift" key; and then I have a blinking "Christmas tree", too complicated to be described. I tested it again 3 times why writing this post (firefox had also an opened window, under thunderbird; with firefox alone, the screen blinks only one time -should also not-). WORKAROUND: When the seconds are not displayed in the upper bar there is no problem. --- .tmp.unity_support_test.0: ApportVersion: 2.20.1-0ubuntu2.15 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 DistUpgraded: Fresh install DistroCodename: xenial DistroRelease: Ubuntu 16.04 DistroVariant: ubuntu ExtraDebuggingInterest: Yes GraphicsCard: Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0156] (rev 09) (prog-if 00 [VGA controller]) Subsystem: Toshiba America Info Systems 3rd Gen Core processor Graphics Controller [1179:fb31] InstallationDate: Installed on 2017-06-29 (223 days ago) InstallationMedia: Ubuntu 16.04.2 LTS "Xenial Xerus" - Release amd64 (20170215.2) MachineType: TOSHIBA SATELLITE PRO C850-1GR Package: xorg 1:7.7+13ubuntu3 PackageArchitecture: amd64 ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.13.0-32-generic.efi.signed root=UUID=7169ec32-1674-4c34-b45b-2001ed412887 ro quiet splash vt.handoff=7 ProcVersionSignature: Ubuntu 4.13.0-32.35~16.04.1-generic 4.13.13 Tags: xenial ubuntu compiz-0.9 Uname: Linux 4.13.0-32-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 10/01/2013 dmi.bios.vendor: Insyde Corp. dmi.bios.version: 6.80 dmi.board.asset.tag: Type2 - Board Asset Tag dmi.board.name: PLCSF8 dmi.board.vendor: Intel dmi.board.version: Type2 - Board Version dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: OEM Chassis Manufacturer dmi.chassis.version: OEM Chassis Version dmi.modalias: dmi:bvnInsydeCorp.:bvr6.80:bd10/01/2013:svnTOSHIBA:pnSATELLITEPROC850-1GR:pvrPSCBXE-01T01GFR:rvnIntel:rnPLCSF8:rvrType2-BoardVersion:cvnOEMChassisManufacturer:ct10:cvrOEMChassisVersion: dmi.product.family: Type1Family dmi.product.name: SATELLITE PRO C850-1GR dmi.product.version: PSCBXE-01T01GFR dmi.sys.vendor: TOSHIBA version.compiz: compiz 1:0.9.12.2+16.04.20160823-0ubuntu1 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.83-1~16.04.1 version.libgl1-mesa-dri: libgl1-mesa-dri 17.2.4-0ubuntu1~16.04.4 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 17.2.4-0ubuntu1~16.04.4 version.xserver-xorg-core: xserver-xorg-core N/A version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A version.xserver-xorg-video-ati: xserver-xorg-video-ati N/A version.xserver-xorg-video-intel: xserver-xorg-video-intel N/A version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau N/A To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1739322/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
