Dynamic desktop background when TearFree is true

[René Spies]

In my 20-intel.conf file in either /etc/X11/xorg.conf.d/ or /usr/share/X11/xorg.conf.d/ when I set Option TearFree to true, the pixel on my desktop go wild, see attachment (dynamic because those stripes vary from boot to boot).

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: xorg 1:7.7+19ubuntu14
ProcVersionSignature: Ubuntu 5.4.0-28.32-generic 5.4.30
Uname: Linux 5.4.0-28-generic x86_64
ApportVersion: 2.20.11-0ubuntu27
Architecture: amd64
BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
CasperMD5CheckResult: skip
CompositorRunning: None
CurrentDesktop: ubuntu:GNOME
Date: Sun May 3 00:34:27 2020
DistUpgraded: Fresh install
DistroCodename: focal
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes, including running git bisection searches
GraphicsCard:
 Intel Corporation UHD Graphics 620 (Whiskey Lake) [8086:3ea0] (prog-if 00 [VGA controller])
   Subsystem: ASUSTeK Computer Inc. UHD Graphics 620 (Whiskey Lake) [1043:16a1]
InstallationDate: Installed on 2020-04-30 (2 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
Lsusb:
 Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
 Bus 001 Device 003: ID 04f3:0903 Elan Microelectronics Corp. ELAN:Fingerprint
 Bus 001 Device 002: ID 13d3:56dc IMC Networks USB2.0 HD UVC WebCam
 Bus 001 Device 004: ID 8087:0aaa Intel Corp.
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: ASUSTeK COMPUTER INC. ZenBook UX392FA_UX392FA
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-28-generic root=UUID=cbcf9a35-a5f8-429f-adad-ad8f21bff5df ro quiet splash vt.handoff=7
SourcePackage: xorg
Symptom: display
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/17/2019
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: UX392FA.301
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: UX392FA
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: 1.0
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK COMPUTER INC.
dmi.chassis.version: 1.0
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrUX392FA.301:bd07/17/2019:svnASUSTeKCOMPUTERINC.:pnZenBookUX392FA_UX392FA:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnUX392FA:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:
dmi.product.family: ZenBook
dmi.product.name: ZenBook UX392FA_UX392FA
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK COMPUTER INC.
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.101-2
version.libgl1-mesa-dri: libgl1-mesa-dri 20.0.4-2ubuntu1
version.libgl1-mesa-glx: libgl1-mesa-glx N/A
version.xserver-xorg-core: xserver-xorg-core 2:1.20.8-2ubuntu2
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20200226-1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.16-1

[Daniel van Vugt (vanvugt)]

If you are using the 'intel' driver then this would be a duplicate of bug 1867668, but the attached logs show you're not using that driver (which is good in theory).

To verify which it is, please wait until the problem happens again and then run:

  journalctl -b0 > journal.txt

and attach the file 'journal.txt' here.

[René Spies (rene-j-spies)]

The problem appears only when I am using the Intel driver.
And it also now appears even when I have the TearFree option removed from the file, which was not the case before I tried to fix the screen tearing.
I have the file asked for attached when reproducing the error.

[Daniel van Vugt (vanvugt)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. This particular bug has already been reported and is a duplicate of bug 1867668, so it is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Feel free to continue to report any other bugs you may find.