http://bugs.freedesktop.org/show_bug.cgi?id=16245
Summary: [kernel modesetting] display mashed after change mode
Product: DRI
Version: XOrg CVS
Platform: x86 (IA32)
OS/Version: Linux (All)
Status: NEW
Severity: major
Priority: high
Component: DRM modules
AssignedTo: dri-devel@lists.sourceforge.net
ReportedBy: [EMAIL PROTECTED]
CC: [EMAIL PROTECTED], [EMAIL PROTECTED]
Created an attachment (id=16941)
--> (http://bugs.freedesktop.org/attachment.cgi?id=16941)
dmesg log after change mode
source:
xserver - master tip commit 26e7e69ab893d1f2b35213250ada40ec90944f62
drm - modesetting-101 03bf1fba67413f381d2a548fe08bd634a48fcc48
xf86-video-intel - intel-kernelmode 95fb4ac2ea326ee67f472e33ba4202942f246df1
The display becomes a mess after change the display mode.
Reproduce steps:
1, modprobe drm debug=1
2, modprobe i915 modeset=1
3, X &
4, xterm &
5, xrandr --output VGA0 --mode 800x600
My platform: Intel Q35
Output of xrandr:
[EMAIL PROTECTED]:~$ xrandr -q
Screen 0: minimum 320 x 200, current 1280 x 1024, maximum 2048 x 2048
VGA0 connected 1280x1024+0+0 (normal left inverted right x axis y axis) 380mm x
300mm
1280x1024 60.0*+ 75.0 60.0*
1600x1200 60.0
1600x1024 60.0
1400x1050 60.0
1280x960 60.0
1152x864 75.0
1024x768 75.1 75.0 70.1 60.0
832x624 74.6
800x600 72.2 75.0 60.3
640x480 75.0 72.8 75.0 60.0 59.9
720x400 70.1
[EMAIL PROTECTED]:~$ xrandr --output VGA0 --mode 800x600
resize called 800 600
old front size 00800000, new front size 001e8000
old front offset 02800000, new front offset 03010000
FRONTBUFFER HANDLE CHANGING 0x82eace8
fb id is 42
X Error of failed request: BadMatch (invalid parameter attributes)
Major opcode of failed request: 149 (RANDR)
Minor opcode of failed request: 7 ()
Serial number of failed request: 16
Current serial number in output stream: 17
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