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 Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1739322 Title: Hazardous displays when coming back from sleep state To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1739322/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
