Drm: mgag200. Video adapter issue with 5.4.0-rc3 ; no graphics
Submitted by Joh..@..le.com
Assigned to Thomas Zimmermann
bisect took to me to this change that certainly reflects the behavior I am seeing :
commit 81da87f63a1edebcf8cbb811d387e353d9f89c7a (refs/bisect/bad)
Author: Thomas Zimmermann firstname.lastname@example.org
Date: Tue May 21 13:08:29 2019 +0200
drm: Replace drm_gem_vram_push_to_system() with kunmap + unpin
The push-to-system function forces a buffer out of video RAM. This decision
should rather be made by the memory manager. By replacing the function with
calls to the kunmap and unpin functions, the buffer's memory becomes available,
but the buffer remains in VRAM until it's evicted by a pin operation.
This patch replaces the remaining instances of drm_gem_vram_push_to_system()
in ast and mgag200, and removes the function from DRM.
My 1st impression is we need a method that restores the previous behavior that pushes the content to the device .
I found this issue using
If there is a more specific. RPM I can look at for guidance I will .