Something is wrong with timing at which KDE/Linux is either pulling or pushing the values to … the device file?
The problem is mainly in the smoothness of the mouse motion. When drawing small/medium circles with the mouse, I almost never see circles in the cursor motion on screen. And quite predictably, if you drag the mouse over KDE UI elements like drop downs that light up or interact, this causes the mouse to slow down.
Strangely, when the mouse cursor travels from being on top of one window to another window, this seems to trigger the delay/slowdown in mouse cursor motion. So scrolling from one side of the screen to another is never smooth and this is unusable.
I think that the system is exhibiting problems of the same nature with the touchpad, but the resulting cursor motion is smooth because of some differences in how touchpad/mouse device files store their values (as to what specific differences in device files IDK…) in other words the touchpad motion feels smooth but the choppiness is still there. The cursor’s resulting motion isn’t affected and thrown off the curve like with the mouse though.
I don’t really know where to start looking. This seemed to be happening on the Sway & KDE live USB’s. It may be a wayland issue. I checked compositing options. I removed blur/transparency from konsole & will do the same as far as I can with KDE but previous experience has taught me that one does not simply turn off KDE transparency…
(My poor GPU… it will be over soon I swear. Do pass gently into that sweet night)
Have you tested a different mouse to eliminate a hardware issue. You never mentioned if the mouse was wireless. Is it a Bluetooth mouse? Have you tested a wired mouse? Are you using a 4K resolution?
There maybe software for your Razer model in the AUR. You will need to search there. I do not use their products, so I'm not fully aware of their requirements.
Actually, the new optical mouse only solved some of the problems. It’s still slowing when the cursor crosses KDE/Qt UI elements.
To explain why I’m a bit slow to respond here: I’m still getting everything like Emacs setup, so I’m in the classic noob Linux situation of “I know! I’ll just use XYZ … oh it’s not installed/configured yet”. And Neovim deleted the Org installation notes I was taking.
I also keep getting shut out of my login session and need to reset it with “login to unlock-session 2”, but when I do I can’t open windows. I have downloaded SystemdGenie and there is probably a service that needs to be restarted.
I may switch to sway, but I need to figure out Wacom compatibility and a few other things.
You can never know… Maybe you can find some useful utility in AUR.
Another test can be to disable some power/performance utility that may be causing this.
I had something similar, that was greatly improved stopping/disabling ananicy service.
The reason I asked is because I experienced sluggish responsiveness on 4K displays about a year ago. I forget exactly what configuration files I had to change to correct that issue.
Sorry, I will update the thread soon with the requested details. I am visiting family and haven’t had much access to my laptop.
Installing =nouveau-fw= via yay solved most of the problems with responsiveness. I expect that installing a few Razer-specific packages will solve the rest.
My graphics card is old. This ended up being mostly a compositing issue, not an input issue. I will still post my inxi output when I get my laptop set up enough to get into my password files.
i may end up moving to the Sway build of Garuda though. KDE lacks declarative configuration and makes tiling hard.
this is a bit off-topic, but the recent addition of transparency to the Sweet(ified) themes was a bit perplexing. does this not degrade performance as much as I think it does? the changes look good, but i have never had good experiences with transparency. i wish there was a simple way at the compositor level to turn transparency off globally in KDE.