[nouveau] garbled rendering with glamor on G71
Submitted by Olivier Fourdan
Assigned to Nouveau Project
Created attachment 128933 Screenshot of the issue
While investigating rendering bugs on Xwayland with nouveau specifically ( and ) I realized that some gtk2 output (this Xwayland) is completely garbled.
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)
The window is black with random content
The rendering is correct
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