| Bug ID | 112265 |
|---|---|
| Summary | Drm: mgag200. Video adapter issue with 5.4.0-rc3 ; no graphics |
| Product | DRI |
| Version | DRI git |
| Hardware | x86-64 (AMD64) |
| OS | Linux (All) |
| Status | NEW |
| Severity | major |
| Priority | not set |
| Component | DRM/other |
| Assignee | dri-devel@lists.freedesktop.org |
| Reporter | John.p.donnelly@oracle.com |
bisect took to me to this change that certainly reflects the = behavior I am seeing : 5.1.0-rc5 commit 81da87f63a1edebcf8cbb811d387e353d9f89c7a (refs/bisect/bad) Author: Thomas Zimmermann <tz= immermann@suse.de> 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 decis= ion should rather be made by the memory manager. By replacing the function w= ith 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_syst= em() 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 .=20=20=20=20 I found this issue using=20 gnome-desktop3-3.28.2-1.el8.x86_64 If there is a more specific. RPM I can look at for guidance I will .
| What | Removed | Added |
|---|---|---|
| CC | John.p.donnelly@oracle.com |
Created attachment 145949 [details]=
dmesg and message file on bi-sected kernel
Starting gnome=20
See messages for=20
" starting gnome "
and=20
" Stopping gnome "
debugfs content :
With gnome running=20
# for f in `find . -type f ` ; do=20
> echo "$f : `cat $f` "=20
> done
./VGA-1/edid_override :=20=20=20
./VGA-1/force : unspecified=20
./internal_clients :=20=20=20
./framebuffer : framebuffer[35]:
allocated by =3D Xorg
refcount=3D2
format=3DXR24 little-endian (0x34325258)
modifier=3D0x0
size=3D1024x768
layers:
size[0]=3D1024x768
pitch[0]=3D4096
offset[0]=3D0
obj[0]:(null)
framebuffer[34]:
allocated by =3D [fbcon]
refcount=3D1
format=3DXR24 little-endian (0x34325258)
modifier=3D0xb7e2c74500000010
size=3D1024x768
layers:
size[0]=3D1024x768
pitch[0]=3D4096
offset[0]=3D4294967295
obj[0]:(null)=20
./gem_names : name size handles refcount=20
./clients : command pid dev master a uid magic
systemd-logind 1563 0 y y 0 0=20
./name : mgag200 dev=3D0000:3d:00.0 unique=3D0000:3d:00.0
Created attachment=
145950 [details]
Running startx on the console
This likely doesn't help much=20
On a 4.18 kernel ; when I do "startx" on the console ; it eve=
ntually runs
gnone.
On the bad kernel ; I just see x11 noise ; then nothing .
| What | Removed | Added |
|---|---|---|
| Assignee | dri-devel@lists.freedesktop.org | tzimmermann@suse.de |