Delayed response - display and cursor

[binkyd]

Not sure if this is a hardware or OS kernel problem:
Specs:
System info:
Operating System Manjaro Linux
Cinnamon Version 4.4.8
Linux Kernel 5.6.10-3-MANJARO
Processor AMD Ryzen 7 2700 Eight-Core Processor x 8
Memory 15.6 GiB
Hard Drives 3619.1 GB
Graphics Card Advanced Micro Devices, Inc. [AMD/ATI] Ellesmere [Radeon RX 580X 8GB]
Asus VG248 monitor, Variety of mice, Azio keyboard

Across several different versions of Linux, different USB ports, 2 separate graphics cards, different mice and keyboards, a short 1 - 2 second delay starts happening to keyboard and mouse input. It sticks occasionally at first, but gradually gets to delay on every input. Eventually I will have to reboot, which does seem to fix it for a while.

As per suggestion at LQorg, I added this file to etc/X11/xorg.conf.d/20-amdgpu.conf:
Section “Device”
Identifier “AMD”
Driver “amdgpu”
Option “DRI” “2”
EndSection

But it hasn’t solved the issue. Any thoughts out there?

[MrFigs]

If you use a keyboard shortcut to pause/unpause music, is that delayed? If so, it’s probably an input- or USB-related issue, rather than a graphics issue. You mention trying two GPUs. Were they both AMD cards?

Is this a new system? Has it always had this problem, or did it develop recently?

Do you have a PS/2 port to test with? That would cut USB out of the picture.

If you switch to a tty that isn’t running X, does the problem persist?

Is there anything interesting in dmesg?

Instead of restarting to fix the problem, what happens if you log out, then log back in?

[Zibob]

Could it be a similar issue to this?

RX 5700 XT and Mouse Cursor Issues

[ Preface ] So… after upgrading to a 5700 XT from a dead 980Ti I entered the world of AMD GPU woes. I consider myself lucky since with the latest Adrenaline drivers I honestly had very few issues, and I must say even less driver crashes compared to my weekly average on Nvidia (aside from the fact that Nvidia drivers at least recover gracefully, while AMD’s tend to cause hard locks). I faced an issue where everything using GPU accelerated rendering caused stuttering, and since I’m in the process of developing an OpenGL accelerated tool I had plenty of metrics I could debug. Long story short, I noticed I was having a frame time loss of about 3ms, and that’s what caused the perceivable stutter in my application. What puzzled me was that it only occurred while I was dragging elements of the UI around. My frame time is 0.2ms for the application main loop, and it did not make a difference if I completely avoided processing all inputs or not, whether vsync was enabled or not and regardless of the APIs used to render the surface. All fancy options disabled in the drivers, I started investigating my findings, armed with new keywords to feed into google. [ Windows (Fix found) ] After some more research and testing with various other media (including videogames) I had a 100% reproducible way to introduce the issue, by simply waving the mouse cursor over any window that used Vulkan / OpenGL (2.0 to 4.6) / DX (9c to 12). What I did not expect was ultimately finding out that by disabling Hardware Cursor support in Windows 10 would make my 5700 XT provide silky smooth rendering, similar to what I used to enjoy with the 980Ti. Such thing is possible by editing the following registry key: Computer\HKEY_CURRENT_USER\Control Panel\Mouse\MouseTrails and setting its value to “-1”, which technically tells windows that you don’t want to have mouse trails (same as setting it to “0”), but also has the side effect of leaving Hardware Cursor support disabled, effectively forcing …

[binkyd]

Thank you, Zibob. Sounds like the same issue to me.

I’ve disabled hardware acceleration in the browsers i use - I’ll get back with results.

He’s right saying this, in months this is the closest I’ve found.:

Due to the generic nature of the keywords involved in this topic it’s proven quite a challenge to find discussions around it…

I’ve also gone to vsynctester.com, as referenced in Burns’ posts, and in the test I get some flashes of red and cyan, which it says is not a good thing. Unfortunately, the technical discussion is now beyond me and I am clueless as to what to do about my apparent vsync issue.

[binkyd]

Have solved issue.
Installed the Linux kernel for AMD, and several other AMD specific things I found in the Arch/Manjaro repos.