Hello everyone,

I hope this is the right place to find a little bit of help...
I have a Gentoo machine with KDE 5 Plasma. It has been running for a few weeks, now, and I did not have problems until I restarted my computer today. Controls started blurring making texts unreadable (see picture: https://i.imgur.com/Lg15o5d.png ).
When hovering with my mouse, the text unblurs for a second, then blurs again (smoothly animated). Also holding a window and moving it around keeps the window and all controls inside unblurred.
This effect only appears when I set the compositor to OpenGL. Changing to XRender is a workaround, but I'd like to fix the OpenGL settings.
How can I fix my KDE installation?

Some version information:
Kernel: 4.3.4-gentoo
Gaphics Card: NVIDIA GTX 970 using nvidia-drivers-358.16-r1
KDE: Plasma 5.5.4
KDE Framework: 5.18.0

If you need more versions, settings, logs or USE flags, please just tell me what you need and I will happily provide it.

any recent upgrades?

couple things to try
1) test as a new user
2) rename your kwinrc file in ~/.kde[4]/share/config/ and restart kwin

Code: Select all

kwin --replace

3) assuming you compile you own Nvidia drives recompile them

ps - no real idea, these are just something I would try

Run "nvidia-settings" and disable FXAA.

FXAA is a shader based full screen anitaliaser which causes exactly this.
Unfortunately, there's no environment to control this (so we cannot downforce it from kwin) - if you want to use it in some game, rather invoke that as

Code: Select all

nvidia-settings -a FXAA=1
quake
nvidia-settings -a FXAA=0


You may also be able to disable it for kwin_x11 in nvidia-settings with an application profile.

@google01103: Thank you for the ideas. I am a lazy guy, so I just skipped to the most simple solution with the setting....

luebking wrote:Run "nvidia-settings" and disable FXAA.

Simple and effective! Seems like I enabled it at some point and it just took effect after the reboot. Thanks a lot!

Same issue, text is undreadable and is like "beating", that is, each second seems to be "detailed" and gradually it becomes "fuzzy" and same each 1 second. While moving mouse over buttons than change any property (color, shadow, etc) it changes more quickly. But it's really a headache try to work this way. It doesn't happen if I login like root, but with my user (that have configurations from other OpenSUSE-Plasma previous versions) and just after install NVidia drivers from their repositories.

Change FXAA and reboot does nothing in my case.

Even when trying to take a screenshot, while resizing area to capture, blurry effect changes.

Operating System: openSUSE Tumbleweed 20211016
KDE Plasma Version: 5.23.0
KDE Frameworks Version: 5.86.0
Qt Version: 5.15.2
Kernel Version: 5.14.11-1-default (64-bit)
Graphics Platform: X11
Processors: 8 × Intel® Core™ i7-9700K CPU @ 3.60GHz
Memory: 15.4 GiB of RAM
Graphics Processor: NVIDIA GeForce RTX 2060/PCIe/SSE2

https://imgur.com/dIPrOiZ

Tried with a new user? Might help in deciding to clean up previous configurations, as suggested in the very first answer to the original post...