SUMMARY The display is blurry after waking up from sleep on NVIDIA hardware. This doesn't happen on my laptop with Intel iGPU. OBSERVED RESULT Waking up from sleep causes the desktop to go out of focus. Wallpaper doesn't seem to be affected, however. EXPECTED RESULT SOFTWARE/OS VERSIONS Operating System: Kubuntu 18.10 KDE Plasma Version: 5.15.3 KDE Frameworks Version: 5.54.0 Qt Version: 5.11.1 Kernel Version: 4.18.0-16-generic OS Type: 64-bit Processors: 4 × Intel® Core™ i5-6500 CPU @ 3.20GHz Memory: 15.6 GiB of RAM ADDITIONAL INFORMATION GPU: NVIDIA GeForce GTX 1060 I first noticed this with nvidia-driver-418, but downgrading to version 410 didn't fix it.
I also want to mention that I currently emailed NVIDIA about this, and trying out whether this affects version 415 as well.
Screenshot please
Created attachment 119073 [details] Screenshot of my monitor I actually captured a video for it. I attached a screenshot just in case you can't open the video (it's linked to YouTube). https://youtu.be/Gn_dITHQFEs
Tried `kwin --replace`, and that didn't work Neither did `plasma-shell --replace`
I also posted the bug on Launchpad: https://bugs.launchpad.net/ubuntu/+source/plasma-desktop/+bug/1822767 Now on Disco beta, its even worse because it flickers, even after boot.
After enabling Flipping, the blurry stuff happens much less frequently, but it happens a lot more frequently compared to 5.14.
Created attachment 119278 [details] NVIDIA log generated from nvidia-bug-report tool Hope this helps
Created attachment 119369 [details] KWin qdbus output Hope this one helps, too.
Any other info you'd want me to let you know so that this issue can be resolved?
I have tried XRender, and while the flickering doesn't happen with it, it won't play nice with multiple monitors
So I tried creating a new user account (probably the first thing I should've tried), and that flickering doesn't happen. I'm now trying to isolate the problem by comparing the settings from one user to another
Created attachment 119478 [details] QDbus KWin output from a new user I'm attaching the output of QDbus from a new user
Thanks
>Tried `kwin --replace`, and that didn't work >Neither did `plasma-shell --replace` That should be kwin_x11 --replace and "plasmashell --replace" - though given the whole screen is blurry, it won't be plasmashell at fault.
Thanks. After erasing everything in the .config/ directory related to KWin & Plasma, what solved it was actually erasing .nvidia-settings-rc file, and have NVIDIA Settings regenerate it again.
Did you have something non-default in the nvidia-settings "antialiasing" tab?
(In reply to David Edmundson from comment #16) > Did you have something non-default in the > > nvidia-settings "antialiasing" tab? I can't remember, unfortunately