The same issue ocurred, but under another usecase. This time the laptop was NOT after the sleep state. The issue occurred afer a few minutes of the idle state so as the display was automatically shut down, but without the sleep state. Also this time an external monitor has been pluggen in addition to the laptop display. I ran "apport-collect 1641152" and also attached one more image.
** Attachment added: "BrokenWindows2.png" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1641152/+attachment/4777182/+files/BrokenWindows2.png -- 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/1641152 Title: Scrambled UI: Text in the Unity windows disappears/mixed after the resume from the screen idle state Status in linux package in Ubuntu: Confirmed Bug description: Text in Unity windows becomes total mess after suspending and waking up Ubuntu 16.04. I had this issue a few times, but it is not always reproducable. The screenshot is attached, where there is disappeared or mixed text on buttons and window panels (though the copy-paste from such broken terminal works fine). $ uname -a Linux A2XLab 4.4.0-45-generic #66-Ubuntu SMP Wed Oct 19 14:12:37 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux Note, that there is enoguht RAM and no any external monitors are plugged. KiB Mem : 7830196 total, 278792 free, 5922752 used, 1628652 buff/cache KiB Swap: 11999228 total, 8749084 free, 3250144 used. 755228 avail Mem --- ApportVersion: 2.20.1-0ubuntu2.1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: lav 6518 F.... pulseaudio /dev/snd/controlC1: lav 6518 F.... pulseaudio CurrentDesktop: Unity DistroRelease: Ubuntu 16.04 EcryptfsInUse: Yes InstallationDate: Installed on 2014-10-25 (750 days ago) InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2) MachineType: LENOVO 20A8S28400 Package: linux (not installed) ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-47-generic root=UUID=daa4b3a5-47b3-4c16-a1de-2dde0c540c4a ro quiet splash vt.handoff=7 ProcVersionSignature: Ubuntu 4.4.0-47.68-generic 4.4.24 RelatedPackageVersions: linux-restricted-modules-4.4.0-47-generic N/A linux-backports-modules-4.4.0-47-generic N/A linux-firmware 1.157.4 Tags: xenial Uname: Linux 4.4.0-47-generic x86_64 UpgradeStatus: Upgraded to xenial on 2016-09-11 (63 days ago) UserGroups: adm cdrom dip docker libvirtd lpadmin plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 06/06/2014 dmi.bios.vendor: LENOVO dmi.bios.version: GRET39WW (1.16 ) dmi.board.asset.tag: Not Available dmi.board.name: 20A8S28400 dmi.board.vendor: LENOVO dmi.board.version: Not Defined dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvrGRET39WW(1.16):bd06/06/2014:svnLENOVO:pn20A8S28400:pvrThinkPadX1Carbon2nd:rvnLENOVO:rn20A8S28400:rvrNotDefined:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 20A8S28400 dmi.product.version: ThinkPad X1 Carbon 2nd dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1641152/+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
