1. Please describe the problem: After upgrading Fedora 33, pulling in the 5.11.x kernel, the mouse cursor was displayed as a block of offset horizontal lines, rendering it unusable. The GPU is a Nvidia GeForce 770 (GK104), using nouveau and Wayland. 2. What is the Version-Release number of the kernel: kernel-5.11.7-200.fc33.x86_64 3. Did it work previously in Fedora? If so, what kernel version did the issue *first* appear? It works flawlessly on 5.10.23-200.fc33.x86_64 and first appeared on kernel-5.11.3-50.fc33.x86_64 iirc, downgrading works just fine. 4. Can you reproduce this issue? If so, please provide the steps to reproduce the issue below: Install any kernel from the 5.11 tree. 5. Does this problem occur with the latest Rawhide kernel? Yes. But applying https://lists.x.org/archives/nouveau/2021-March/038260.html as stated here https://gitlab.freedesktop.org/drm/nouveau/-/issues/55 fixes the issue. 6. Are you running any modules that not shipped with directly Fedora's kernel?: No. 7. Please attach the kernel logs. There seems nothing worth attaching in there.
Known issue, a fix is on its way (this should be fixed in the first Fedora kernel released after the current 5.11.8 one). As a workaround you can stick with a 5.10 kernel for now. *** This bug has been marked as a duplicate of bug 1941291 ***