Arch Linux

LoNaAleim

Member

Registered: 2020-05-20

Posts: 33

[Solved] KDE Plasma: Glitches in hover effects.

I am using KDE Plasma, haven't checked other DEs. This behavior showed up a few weeks ago, I wasn't too bothered and figured it would go away with some update, but it didn't.
Some hover animations in some applications and in the "window decoration" on all application recently started "glitching".
Two examples are the hover animation on the "close / minimize / maximize" icons and the menu bar in KeePassXC.
Funny enough, when I recorded that behavior using peek, it can NOT be observed in the recording, I only see it on the display (also external displays).
When I play back the recording on these exact displays, the glitch is gone!
Because of that I created a recording with my phone camera. It seems like mp4s do not get embedded, so here is a link.

Couldn't find anyone describing a similar experience.

I don't know what settings are relevant, but here are some (hopefully) helpful details:
My device is a Dell XPS 13 2-in-1 (7390).

A ~ uname -r
5.14.7-arch1-1
A ~ plasmashell --version
plasmashell 5.22.5

Last edited by LoNaAleim (2021-10-02 16:59:23)

V1del

Forum Moderator

Registered: 2012-10-16

Posts: 25,331

Re: [Solved] KDE Plasma: Glitches in hover effects.

There's a bug in the intel iris driver and mesa 21.2.x that afaik the fix for still hasn't landed in a stable release, try downgrading mesa to 21.1.6

LoNaAleim

Member

Registered: 2020-05-20

Posts: 33

Re: [Solved] KDE Plasma: Glitches in hover effects.

Thanks for tipping me of.
I somehow couldn't figure out how to install mesa 21.1.6. It seems like its no longer available?

However with the mesa keyword I found these guys:
https://www.reddit.com/r/archlinux/comm … al_glitch/
https://gitlab.freedesktop.org/mesa/mesa/-/issues/2552
...which had the same problem.
And finally: https://linuxreviews.org/Intel_Iris
Which told me that I can create:
$HOME/.drirc
with:

<driconf>
  <device driver="loader" kernel_driver="i915">
    <option name="dri_driver" value="i965" />
  </device>
</driconf>

To use "i965" instead of "iris" as MESA driver and voilá, no more glitches. So far I had no problems with i965, so I think we can consider this [Solved] for now.

V1del

Forum Moderator

Registered: 2012-10-16

Posts: 25,331

Re: [Solved] KDE Plasma: Glitches in hover effects.

Yeah that works as well, as for downgrading:  https://wiki.archlinux.org/title/Arch_Linux_Archive