[nouveau] garbled rendering with glamor on G71
@ofourdan
Submitted by Olivier Fourdan Assigned to Nouveau Project
Description
Created attachment 128933 Screenshot of the issue
Description:
While investigating rendering bugs on Xwayland with nouveau specifically ([1] and [2]) I realized that some gtk2 output (this Xwayland) is completely garbled.
[1] https://bugzilla.redhat.com/show_bug.cgi?id=1411447 [2] https://bugzilla.gnome.org/show_bug.cgi?id=776255
How reproducible:
Always
Steps to reproduce:
- Log in a Wayland session (either Weston or GNOME shell) on a Dell M1710 with a GeForce Go 7950 GTX
- Run gtk-demo (the one from gtk2, i.e. not Wayland native but relying on Xwayland)
- Start the "Assistant" demo (second starting from the top)
Actual result:
The window is black with random content
Expected result:
The rendering is correct
Additional data:
This issue does not occur when using "shm" and CPU rendering instead of glamor in Xwayland.
I am not aware of any other hardware where glamor produces such garbled output, so I suspect an issue with nouveau, but if you reckon it's an issue with glamor instead, please flip this bug back to xserver/glamor
I have seen other issue with black icons being reported with glamor and nouveau as well and these do not occur when using the CPU render in weston for example (https://bugzilla.redhat.com/show_bug.cgi?id=1411447#c12)
In my case, hardware is VGA compatible controller: NVIDIA Corporation G71M [GeForce Go 7950 GTX] (rev a1) (prog-if 00 [VGA controller])
01:00.0 0300: 10de:0297 (rev a1) (prog-if 00 [VGA controller]) Subsystem: 1028:019b