Bug 201815

Summary: Mouse Pointer Disappears when touching top of the screen
Product: Drivers Reporter: siyia (eutychios23)
Component: Video(DRI - non Intel)Assignee: drivers_video-dri
Status: RESOLVED PATCH_ALREADY_AVAILABLE    
Severity: normal CC: alexdeucher, eutychios23, harry.wentland, nicholas.kazlauskas, sambazley
Priority: P1    
Hardware: x86-64   
OS: Linux   
Kernel Version: 4.20-5.0rc1 Subsystem:
Regression: Yes Bisected commit-id:
Attachments: 4.19.4 dmesg
4.20 mainline dmesg

Description siyia 2018-11-29 13:42:47 UTC 
When the mouse cursor touches the top border of the desktop screen it dissapears,bug is only reproducable with kernel 4.20, on previous kernels 4.19 and 4.18 it works as it should,affected pc is a laptop with a single screen.

specs:
acer aspire a315-41
cpu ryzen 3 2200u
gpu1 vega 3
gpu2 radeon 535

OS: Fedora 29, Archlinux

DE: xfce4
Comment 1 Michel Dänzer 2018-11-29 15:07:28 UTC 
Please attach the output of dmesg with 4.20 and 4.19.

Can you bisect?
Comment 2 siyia 2018-11-30 08:45:34 UTC 
Created attachment 279751 [details]
4.19.4 dmesg
Comment 3 siyia 2018-11-30 08:46:00 UTC 
Created attachment 279753 [details]
4.20 mainline dmesg
Comment 4 siyia 2018-11-30 08:47:35 UTC 
sorry cant bisect even if i could it requires a lot of time,since it is graphical and the laptop uses only amd gpus,it is likely a commit to the amdgpu that caused it.
Comment 5 siyia 2018-12-06 15:38:24 UTC 
kernel 4.20rc5 completely broke on my laptop cannot boot or look at logs it freezes after grub with cursor blink and cpu fan at 100%
Comment 6 siyia 2018-12-07 05:07:21 UTC 
that was an issue with the kernel fedora mainline repo, kernel 4.20rc5 boots on my laptop on archlinux, but the mouse pointer issue remains
Comment 7 siyia 2018-12-07 05:59:20 UTC 
A workaround that works is to enable software cursor in Xorg,
i edited 10-amdgpu.conf and 10-radeon.conf
and added:

  Option "SWCursor" "True"
Comment 8 siyia 2018-12-30 20:04:07 UTC 
Hello issue persists on latest kernel 4.20 stable
Comment 9 siyia 2018-12-30 20:07:12 UTC 
tried both wayland and xorg on kde
Comment 10 Sam Bazley 2019-01-02 17:02:23 UTC 
This issue also affects 2500U and 2700U, but not Vega 64.
Comment 11 siyia 2019-01-07 05:04:20 UTC 
bug exists in kernel 5.0rc1 too
Comment 12 Nicholas Kazlauskas 2019-01-07 15:14:18 UTC 
There's a fix for this bug coming soon.

The bug only affects Raven systems and was a regression introduced in 4.20.
Comment 13 siyia 2019-01-20 18:50:34 UTC 
regression is still present at linux 4.20.3
Comment 15 siyia 2019-01-21 19:05:05 UTC 
Finally!!! i applied the fix in kernel 4.20.3 and it works!!!thx i ve been waiting for a month for this