Bug 344170

Can you screenshot such artifacts? (and attach the screenshot ;-)

Sorry, but this artifacts are for some time(less than second), so I can't print screen in in good meanwhile. Additionaly screen I can't save video from recortMyDesktopQT - the content is encoded, but I don't know, where recordMyDesktop save output. I also click save on recordMyDesktop, but present file is not replaced.

recordmydesktop saves to out.ogv in the "working directory" which will be $HOME unless you started it from another path (eg. out of konsole: cd /tmp; recordMyDesktop)

You can also check whether your smartphone/camera produces usable results ;-)

I firstly use save option as ~/artifacts.ogv and next click record.

It saves the movie, but no artifacts are preset at the movie. Maybe have I trouble/matter with my graphics cart?

But that's rather kwin bug, because situation after restarting kwin is normal.

(In reply to Lach Sławomir from comment #4)
> It saves the movie, but no artifacts are present at the movie. Maybe have I
> trouble/matter with my graphics card?

Hard to judge w/o seeing the actual artifacts.

please attach the output of
   qdbus org.kde.KWin /KWin supportInformation

and if you somehow can, a visual representation of the artifacts.

Created attachment 91095 [details]
Here you have output of qdbus org.kde.KWin /KWin supportInformation

 Thomas Lübking asks me to attach this file.

I have recorded movie by my mobile phone, which show the aritifacts, but actually I don't seen usb/mini usb cable and my laptop don't have bluetooth support, so I can't copy movie to my laptop.

Created attachment 91096 [details]
Movie from my mobile

I don't think ths is a problem with the hardware, but likely glsl.

Please try to deactivate the "wobbly windows" effect (run "kcmshell5 kwineffects") and see whether the issue remains.
Also, likely a restart of the compositor (Shift+Alt+F12 toggles it) will likely "fix" the problem,

Thanks. The problem disappears(moving window, restoring window, minimizing window). 

But there are still some bad looking rendering errors, while selecting leave option from desktop's menu or from Kickoff menu.

And while switching desktop, there's then same problem, when restoring/minimizing windows. 

Sadly, I reply too fast.
After looking screen, the problem came again.

Sorry for replying too often. Maybe should I check the error occurs on Waylnad too. But there's problem. When I'm tries to run kwin5_wayland it show message, that it cannot connects to display or there's X11 session on display/

> When I'm tries to run kwin5_wayland it
> show message, that it cannot connects to display or there's X11 session on
> display/

That's correct. kwin_wayland still needs an XServer and another Wayland 
server. The current state is only suited for nested development setups.

(In reply to Lach Sławomir from comment #11)
> But there are still some bad looking rendering errors, while selecting leave
> option from desktop's menu or from Kickoff menu.

That would be the blur (I bet) of the logout effect.


(In reply to Lach Sławomir from comment #12)
> And while switching desktop, there's then same problem, when
> restoring/minimizing windows. 
And this the cubeslide effect?

Basically every non-trivial shader causes problems.

Can you please
a) try the egl backend (run "kcmshell5 kwincompositing" to change)
b) attach /var/log/Xorg.0.log?

Created attachment 91122 [details]
It is X.org log

My X.org's log file.

I have disable mentioned effects, so in some cases artifacts disappears. I must say, I had selected GLX OpenGL interface - not EGL.

Did you give egl a try?

Hi. I downgrade from Plasma 5 to KDE4, but now I coinstall Plasma 5.3 and KDE4. I'm using kwin 5.2.2. The artifacts appear once I had run QT4 application.

Is it still reproducible?
Possibly related to https://bugs.kde.org/show_bug.cgi?id=368275

Hi.

I started thread when I had old laptop probably, but the problems didn't gone. I have newer laptop (some HP) now (since two years) and there's problems with intel GPU. My laptop have also dedicated GPU (AMD). I forgot I start this thread, but nowadays just looking at bugs.kde.org and saw this topic.

I will try to disable some effects, as you suggest. Previous laptop is still there (lenovo ideapad 100-15IBY), but other family member uses it currently and it was flooded by coffee, so I don't known the problem will appear on it or it could been tested (cause it was flooded :-( ). It works, but some additional errors could occur.

It looks there are  no graphics glitches under wayland.

This bug was reported against an outdated version of KWin. We have made many changes since the. 
If the issue persists in newer versions can you reopen the bug report updating the version number.

(In reply to David Edmundson from comment #23)
> This bug was reported against an outdated version of KWin. We have made many
> changes since the. 
> If the issue persists in newer versions can you reopen the bug report
> updating the version number.

I think the problem disappear, but not sure. Firstly, the animation on window move to task bar gone, so I do can not reproduce.

PS: I have problem with select proper bug status. Fell free to select what you think is related. As I said, minimize to taskbar animation gone, but I enabled woobly windows and blur effects. Problem do not occur currently, but I am not sure if it is  cause no animations,