Unwanted square mouse trail

[Christians]

Moving mouse leaves a trail of squares for a few seconds on a fresh 20.04 install. This happens with proprietary nvidia 440 drivers on my GeForce GTX 1050 mobile.

Could be related to my submission https://bugs.launchpad.net/ubuntu/+source/software-properties/+bug/1874819

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: xorg 1:7.7+19ubuntu14
ProcVersionSignature: Ubuntu 5.4.0-26.30-generic 5.4.30
Uname: Linux 5.4.0-26-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
.proc.driver.nvidia.gpus.0000.01.00.0: Error: [Errno 21] Is a directory: '/proc/driver/nvidia/gpus/0000:01:00.0'
.proc.driver.nvidia.registry: Binary: ""
.proc.driver.nvidia.suspend: suspend hibernate resume
.proc.driver.nvidia.suspend_depth: default modeset uvm
.proc.driver.nvidia.version:
 NVRM version: NVIDIA UNIX x86_64 Kernel Module 440.64 Fri Feb 21 01:17:26 UTC 2020
 GCC version:
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: Fri Apr 24 17:59:48 2020
DistUpgraded: Fresh install
DistroCodename: focal
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes, including running git bisection searches
GraphicsCard:
 Intel Corporation HD Graphics 630 [8086:591b] (rev 04) (prog-if 00 [VGA controller])
   Subsystem: ASUSTeK Computer Inc. HD Graphics 630 [1043:1a10]
   Subsystem: ASUSTeK Computer Inc. GP107M [GeForce GTX 1050 Mobile] [1043:1a10]
InstallationDate: Installed on 2020-04-24 (0 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
MachineType: ASUSTeK COMPUTER INC. X580VD
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-26-generic root=UUID=5df76c33-718b-436b-8b59-9a33dafbff4a ro quiet splash vt.handoff=7
SourcePackage: xorg
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 03/08/2018
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: X580VD.315
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: X580VD
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.:bvrX580VD.315:bd03/08/2018:svnASUSTeKCOMPUTERINC.:pnX580VD:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnX580VD:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:
dmi.product.family: VivoBook
dmi.product.name: X580VD
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK COMPUTER INC.
nvidia-settings:
 ERROR: Unable to load info from any available system

 ERROR: Unable to load info from any available system
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.nvidia-graphics-drivers: nvidia-graphics-drivers-* 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
xserver.bootTime: Fri Apr 24 16:45:55 2020
xserver.configfile: default
xserver.errors:
 NVIDIA(G0): GPU screens are not yet supported by the NVIDIA driver
 NVIDIA(G0): Failing initialization of X screen
 systemd-logind: failed to release device: Device not taken
 systemd-logind: failed to release device: Device not taken
 modeset(0): failed to set mode: Permission denied
xserver.logfile: /var/log/Xorg.0.log
xserver.version: 2:1.20.8-2ubuntu2
xserver.video_driver: modeset

[Daniel van Vugt (vanvugt)]

Please try switching to nouveau and then log into 'Ubuntu on Wayland'. Does that avoid the problem?

[Christians (script-vollbio)]

Mouse trail is gone with nouveau, but desktop is very very slow in all three modes XOrg, Gnome Classic, and Ubuntu. I had to switch back to 440 to be able to work.

Switching drivers was only possible via CLI.

The mouse trail is only apparent on the background, not inside application windows.

[Daniel van Vugt (vanvugt)]

Hmm, sounds like we still don't accelerated support for GTX 10 series (Pascal) chips in nouveau. So that's an inconclusive test. Thanks though.

[Daniel van Vugt (vanvugt)]

Though that contradicts what you said at the top of the bug:

> This happens with proprietary nvidia 440 drivers as well as nouveau on my GeFOrce GTX 1050 mobile.

Can you please clarify which is true?

[Christians (script-vollbio)]

Tested again a few times: I confirm that switching to nouveau removes the mouse trail but slows down the desktop to unworkable.

To clarify #6: It could be that in my first test I did not reboot, although this is quite unlikely.
I could re-install the OS if you want me to try to replicate this.

What is for sure is that the Driver's GUI [attached] has issues:
1) After switching to nouveau (and reboot) it does not highlight "nouveau", but points to a new menu entry, "Continue using manually installed driver".
2) Options of switching drivers are greyed out after switching to Nouveau.
3) Claims that my Wifi is not working, but it works just fine.

Annother strange behaviour occurred today: The reboot after switching to Nouveau gets stuck at every boot with

     /dev/sda6 clean, 234123/26879978 files, 4048798/11234253 blocks

Workaround is booting into recovery, then select boot from there - it boots. This problem does disappear after switching to the proprietary display driver.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Yves Monsel (ym-amangi)]

I found out how to stop and activate the bug.
Universal access:Zoom:on Produce trail
Universal Access:Zoom:off Stop the trail
Not tested on Ubuntu but on Manjaro.
Quite sure it's the same problem on Ubuntu.