Description of problem: I have a Jetson Nano, with Fedora 33 installed. When I move windows in Gnome desktop, or go to the Activities corner, I see strange video artifacts (which to me, look like tearing). As the screensaver starts to kick in, there's a tremendous amount of flickering and tearing, and then the screen goes blank. If I move the mouse, the lock screen appears, but moving the mouse or pressing keys on the keyboard have no effect. Version-Release number of selected component (if applicable): 20.2.1-2 How reproducible: Very Steps to Reproduce: 1. Install F33 Aarch64 image to a microsd card using fedora-arm-image-installer 2. Mount the SD card's boot paritition and fix the "dtb" symlink 3. Boot from the microsd card 4. Go through the initial user setup in Gnome 5. Start using the system Actual results: Video artifacts/tearing, and video stops working correctly after the screensaver kicks in. System is still accessible via SSH. Expected results: No tearing, and no lock-up when the screensaver kicks in. Additional info: I'll attach some video recordings to help explain.
Created attachment 1724832 [details] Flicker/tearing Here's a video recording showing the flickering and tearing.
Created attachment 1724835 [details] Flicker and tearing and lockup when the screensaver activates This is the flickering and tearing and lockup when the screensaver activates. Note that moving the mouse or pressing keys on the keyboard after the screen has gone blank brings up the lock screen, but the mouse cursor doesn't move and pressing keys on the keyboard doesn't bring up the password prompt on the lock screen.
taking the bug. This is a known issue and is probably related with how tegradrmfb and nouveau sync on completed jobs. Thierry Redding from Nvidia has a potential fix for it, but with i915 + nouveau this also just seems to work.
This should be fixed when this patch set lands upstream: https://www.spinics.net/lists/linux-tegra/msg58999.html
This is fixed in 5.14.0-0.rc1.16.fc35.aarch64
Verified no more tearing when testing today's nightly Workstation disk image (Fedora-Rawhide-20210713.n.0).
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