Public bug reported: This is a very wierd behavior I get on the Lenovo Yoga S940 after upgrading to 19.10.
Basically the rendering on the laptop display is... messy, I'll try to describe how as * screenshots always take it ok * also screenrecorder always seem ok, despite rendering being broken. What heppen is: When I alt-tab or switch tabs or align window right, the rendering does not happen completely, so the screen displays part of the old status and part of the new. If I then alt-tab again for example, or move the mouse cursor over the portions that has not rendered properly, the renders happens. This happens only on the laptop display, not on the external display. This makes the laptop almost unusable with its own display. I will need to go back to 19.04, if there's something I can do to help debug this I'd rather do. ProblemType: Bug DistroRelease: Ubuntu 19.10 Package: xorg 1:7.7+19ubuntu12 ProcVersionSignature: Ubuntu 5.3.0-13.14-generic 5.3.0 Uname: Linux 5.3.0-13-generic x86_64 ApportVersion: 2.20.11-0ubuntu7 Architecture: amd64 BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log' CompositorRunning: None CurrentDesktop: ubuntu:GNOME Date: Tue Oct 1 13:13:40 2019 DistUpgraded: 2019-09-21 10:16:26,647 DEBUG Running PostInstallScript: './xorg_fix_proprietary.py' DistroCodename: eoan DistroVariant: ubuntu ExtraDebuggingInterest: Yes, including running git bisection searches GraphicsCard: Intel Corporation UHD Graphics 620 (Whiskey Lake) [8086:3ea0] (rev 02) (prog-if 00 [VGA controller]) Subsystem: Lenovo UHD Graphics 620 (Whiskey Lake) [17aa:3801] InstallationDate: Installed on 2019-09-12 (18 days ago) InstallationMedia: Ubuntu 19.04 "Disco Dingo" - Release amd64 (20190416) MachineType: LENOVO 81Q7 ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.3.0-13-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=7 SourcePackage: xorg Symptom: display UpgradeStatus: Upgraded to eoan on 2019-09-21 (10 days ago) dmi.bios.date: 06/12/2019 dmi.bios.vendor: LENOVO dmi.bios.version: AKCN34WW dmi.board.asset.tag: No Asset Tag dmi.board.name: LNVNB161216 dmi.board.vendor: LENOVO dmi.board.version: SDK0J40709 WIN dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Lenovo Yoga S940-14IWL dmi.modalias: dmi:bvnLENOVO:bvrAKCN34WW:bd06/12/2019:svnLENOVO:pn81Q7:pvrLenovoYogaS940-14IWL:rvnLENOVO:rnLNVNB161216:rvrSDK0J40709WIN:cvnLENOVO:ct10:cvrLenovoYogaS940-14IWL: dmi.product.family: Yoga S940-14IWL dmi.product.name: 81Q7 dmi.product.sku: LENOVO_MT_81Q7_BU_idea_FM_Yoga S940-14IWL dmi.product.version: Lenovo Yoga S940-14IWL dmi.sys.vendor: LENOVO version.compiz: compiz N/A version.libdrm2: libdrm2 2.4.99-1ubuntu1 version.libgl1-mesa-dri: libgl1-mesa-dri 19.1.6-1ubuntu1 version.libgl1-mesa-glx: libgl1-mesa-glx N/A version.xserver-xorg-core: xserver-xorg-core 2:1.20.5+git20190820-0ubuntu3 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.0.1-1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20190815-1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.16-1 ** Affects: xorg (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug corruption eoan ubuntu -- 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/1846201 Title: Rendering is delayed on laptop display (works in external display) Status in xorg package in Ubuntu: New Bug description: This is a very wierd behavior I get on the Lenovo Yoga S940 after upgrading to 19.10. Basically the rendering on the laptop display is... messy, I'll try to describe how as * screenshots always take it ok * also screenrecorder always seem ok, despite rendering being broken. What heppen is: When I alt-tab or switch tabs or align window right, the rendering does not happen completely, so the screen displays part of the old status and part of the new. If I then alt-tab again for example, or move the mouse cursor over the portions that has not rendered properly, the renders happens. This happens only on the laptop display, not on the external display. This makes the laptop almost unusable with its own display. I will need to go back to 19.04, if there's something I can do to help debug this I'd rather do. ProblemType: Bug DistroRelease: Ubuntu 19.10 Package: xorg 1:7.7+19ubuntu12 ProcVersionSignature: Ubuntu 5.3.0-13.14-generic 5.3.0 Uname: Linux 5.3.0-13-generic x86_64 ApportVersion: 2.20.11-0ubuntu7 Architecture: amd64 BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log' CompositorRunning: None CurrentDesktop: ubuntu:GNOME Date: Tue Oct 1 13:13:40 2019 DistUpgraded: 2019-09-21 10:16:26,647 DEBUG Running PostInstallScript: './xorg_fix_proprietary.py' DistroCodename: eoan DistroVariant: ubuntu ExtraDebuggingInterest: Yes, including running git bisection searches GraphicsCard: Intel Corporation UHD Graphics 620 (Whiskey Lake) [8086:3ea0] (rev 02) (prog-if 00 [VGA controller]) Subsystem: Lenovo UHD Graphics 620 (Whiskey Lake) [17aa:3801] InstallationDate: Installed on 2019-09-12 (18 days ago) InstallationMedia: Ubuntu 19.04 "Disco Dingo" - Release amd64 (20190416) MachineType: LENOVO 81Q7 ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.3.0-13-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=7 SourcePackage: xorg Symptom: display UpgradeStatus: Upgraded to eoan on 2019-09-21 (10 days ago) dmi.bios.date: 06/12/2019 dmi.bios.vendor: LENOVO dmi.bios.version: AKCN34WW dmi.board.asset.tag: No Asset Tag dmi.board.name: LNVNB161216 dmi.board.vendor: LENOVO dmi.board.version: SDK0J40709 WIN dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Lenovo Yoga S940-14IWL dmi.modalias: dmi:bvnLENOVO:bvrAKCN34WW:bd06/12/2019:svnLENOVO:pn81Q7:pvrLenovoYogaS940-14IWL:rvnLENOVO:rnLNVNB161216:rvrSDK0J40709WIN:cvnLENOVO:ct10:cvrLenovoYogaS940-14IWL: dmi.product.family: Yoga S940-14IWL dmi.product.name: 81Q7 dmi.product.sku: LENOVO_MT_81Q7_BU_idea_FM_Yoga S940-14IWL dmi.product.version: Lenovo Yoga S940-14IWL dmi.sys.vendor: LENOVO version.compiz: compiz N/A version.libdrm2: libdrm2 2.4.99-1ubuntu1 version.libgl1-mesa-dri: libgl1-mesa-dri 19.1.6-1ubuntu1 version.libgl1-mesa-glx: libgl1-mesa-glx N/A version.xserver-xorg-core: xserver-xorg-core 2:1.20.5+git20190820-0ubuntu3 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.0.1-1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20190815-1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.16-1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1846201/+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