I installed Manjaro KDE and noticed a screen tearing while scrolling or watching youtube videos on full screen. had the same Problem with Ubuntu 20 and never been solved there even with tearfree enabled.
still didn’t try anything here on manjaru aliitle bit afraid of missing the system so I thought I should ask here first. oh I switched to the Video-modesetting driver from the Video-linux and nothing changed.
There have been a few reports of this. On mine, VSync (screen tearing) issues are very evident with those things you describe when the compositor is NOT running; seems hardly noticeable with these settings:
so that the next person that has the exact same problem you just had will benefit from your post as well as your question will now be in the “solved” status.
I had a similar problem with my Intel iGPU, I couldn’t watch 1080p youtube video’s without it stuttering like crazy. I tried different solutions, don’t really know which one worked best but all togheter they solved my problem with youtube xD:
1- make shure that your browser is using hardware acceleration, there are a lot of browser specific tutorials on this forum or online in general so it should be easy. Mine wasn’t but enabling it didn’t make a significant difference so I had to try something else, altough it solved the tearing and stuttering problems for someone.
2- install libva-intel-driver pack from pamac
If this doesn’t solve your problem you could try libva-intel-driver-g45-h264 and install the h264ify plugin on chrome/firefox/whatever you are using. This combination worked for someone but it made very little difference for me so your mileage may vary
3- try OpenGL 3.1 as rendering backend if you are using OpenGL 2.0
4- install xf86-video-intel pack from pamac. I don’t remember what this does or where I read it could make a difference, but in combination with point 5 solved my problem
5- make shure your display manager in system settings is set to “video-linux”. This in combination with point 3 made my life a lot better and now youtube videos are smooth even at 1080p
Look, I’m no power or advanced user, those are just the things that I tried to solve my problem over a span of three weeks, I was very frustrated cause no solution that I could find worked for me, so be careful if you want to try it out. You should always backup your system as they say!
Let me know if this was helpful, have a great day!
[EDIT] libva-intel-driver-g45-h264 in combination with the plugin did actually help with the stuttering and tearing issue that I had but every other application, like games, that relied heavly on GPU was worse than before.
I tried this and my laptop was stuck at lonovo logo, had to go in live usb and delete this file to get it working again. IDK why it happened maybe because my system is dual booted