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
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https://bugs.launchpad.net/bugs/1846201
Title:
Rendering is delayed on laptop display (works in external display)
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