https://bugs.freedesktop.org/show_bug.cgi?id=90406
Bug ID: 90406
Summary: garbage on screen after gdm VT switch
Product: xorg
Version: unspecified
Hardware: x86-64 (AMD64)
OS: Linux (All)
Status: NEW
Severity: normal
Priority: medium
Component: Driver/Radeon
Assignee: [email protected]
Reporter: [email protected]
QA Contact: [email protected]
GNOME's gdm 3.16 uses separate VTs for the login screen & user session.
Somehow, when it switches the VTs, garbage is displayed on screen for a short
while (instead of the expected gray gdm texture). It goes away as soon as
gnome-shell begins its launch animation.
At the same time, I get this in dmesg:
[ 1294.609195] radeon 0000:01:00.0: evergreen_cs_track_validate_texture:851
texture bo too small (layer size 4325376, offset 0, max layer 1, depth 1, bo
size 4227072) (1408 768)
[ 1294.609247] [drm:radeon_cs_ioctl [radeon]] *ERROR* Invalid command stream !
Specifically, the "garbage" appears to be uninitialized memory, since after
soft reboot I can still see shredded parts of my previous session. (Very
similar to #72979, even though that one is for nouveau and I use radeon.)
screen: LVDS at 1366x768
kernel 4.0, 4.1~rc3
gdm 3.16.1
xorg-server 1.17.1
xf86-video-ati 7.5.0
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