Created attachment 124013 [details] screenshot of blurry state after resume SUMMARY After resuming from Suspend the desktop is blurry. Only disabling compositing fixes the issue. I checked #364766 but it's not the same issue STEPS TO REPRODUCE 1. Use nvidia driver on P1 (435) 2. Suspend 3. Resume OBSERVED RESULT Desktop is blurred EXPECTED RESULT Should be like before it was suspended SOFTWARE/OS VERSIONS Linux/KDE Plasma: 5.3.0-23-generic #25-Ubuntu SMP / Ubuntu 19.10 eoan / 5.16.5 KDE Plasma Version: 5.6.15 KDE Frameworks Version: 5.62.0 Qt Version: 5.12.4 (built against 5.12.4) ADDITIONAL INFORMATION nvidia-driver-435 VGA compatible controller: NVIDIA Corporation TU117GLM [Quadro T2000 Mobile / Max-Q] (rev a1)
Have you updated nvidia driver recently?
Created attachment 124027 [details] another screenshot of blurryness
I have recently installed this laptop - it's Lenovo P1 2nd generation; I previously had a P1 1st generation which didn't have the problem I have downgraded the nvidia drivers now to nvidia-driver-430 (from 435) but same problem I wanted to test with nouveau but that didn't work at all The blurriness is sort of dynamic - characters become clearer when you get close to them with the cursor.. very odd
Worked out that setting the rendering backend to XRender "solves" the problem
It can be a driver issue. Did you have nvidia-driver-430 on the old laptop?
The old one had the nvidia-418.56 driver I can find this in the old xorg log: 8086:3e9b:17aa:2267 rev 0 The new one is (--) PCI: (0@0:2:0) 8086:3e9b:17aa:22a8 rev 2 I'll see if I can downgrade to the old version
Fixed it, not sure how. These are some of the things I did: * `apt purge nvidia-*` && `ubuntu-drivers install nvidia-driver-435` * ``` cat /etc/modprobe.d/blacklist-nouveau.conf blacklist nouveau blacklist lbm-nouveau options nouveau modeset=0 alias nouveau off alias lbm-nouveau off ``` `update-initramfs -u`