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Bug 1892329 - Video artifacts (tearing) on Jetson Nano
Summary: Video artifacts (tearing) on Jetson Nano
Alias: None
Product: Fedora
Classification: Fedora
Component: mesa
Version: 33
Hardware: aarch64
OS: Linux
Target Milestone: ---
Assignee: Karol Herbst
QA Contact: Fedora Extras Quality Assurance
Depends On:
Blocks: ARMTracker
TreeView+ depends on / blocked
Reported: 2020-10-28 13:57 UTC by Jared Smith
Modified: 2021-07-13 19:38 UTC (History)
14 users (show)

Fixed In Version: 5.14.0-0.rc1.16.fc35.aarch64
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Last Closed:
Type: Bug

Attachments (Terms of Use)
Flicker/tearing (15.13 MB, video/mp4)
2020-10-28 13:58 UTC, Jared Smith
no flags Details
Flicker and tearing and lockup when the screensaver activates (5.52 MB, video/quicktime)
2020-10-28 14:09 UTC, Jared Smith
no flags Details

Description Jared Smith 2020-10-28 13:57:04 UTC
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):

How reproducible:

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.

Comment 1 Jared Smith 2020-10-28 13:58:46 UTC
Created attachment 1724832 [details]

Here's a video recording showing the flickering and tearing.

Comment 2 Jared Smith 2020-10-28 14:09:54 UTC
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.

Comment 3 Karol Herbst 2020-10-28 18:35:01 UTC
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.

Comment 4 Peter Robinson 2021-06-12 15:34:45 UTC
This should be fixed when this patch set lands upstream:

Comment 5 Peter Robinson 2021-07-13 19:03:57 UTC
This is fixed in 5.14.0-0.rc1.16.fc35.aarch64

Comment 6 Paul Whalen 2021-07-13 19:38:39 UTC
Verified no more tearing when testing today's nightly Workstation disk image (Fedora-Rawhide-20210713.n.0).

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