https://bugs.freedesktop.org/show_bug.cgi?id=111687
Bug ID: 111687
Summary: white screen with AccelMethod Glamor and xfwm4 with
vsync on (unless vsync is off)
Product: xorg
Version: git
Hardware: x86-64 (AMD64)
OS: Linux (All)
Status: NEW
Severity: not set
Priority: not set
Component: Driver/Radeon
Assignee: [email protected]
Reporter: [email protected]
QA Contact: [email protected]
Created attachment 145364
--> https://bugs.freedesktop.org/attachment.cgi?id=145364&action=edit
turn on/off xfwm4's vsync without restarting X or xfwm4
If I use
Option "AccelMethod" "Glamor"
in /etc/X11/xorg.conf.d/93_dri.conf
So it looks like this:
Section "Device"
Identifier "Device0"
Driver "radeon"
BusID "PCI:0:1:0"
Option "DRI" "3"
Option "DRI3" "1"
Option "AccelMethod" "Glamor" #was EXA
Option "EXAVSync" "on"
Option "RenderAccel" "on"
Option "ColorTiling" "on"
Option "ColorTiling2D" "on"
Option "EXAPixmaps" "on"
Option "AccelDFS" "on"
Option "SwapbuffersWait" "true"
Option "EnablePageFlip" "on"
Option "SWcursor" "off"
Option "MigrationHeuristic" "greedy"
Option "Backlight" "radeon_bl"
Option "ShadowPrimary" "on"
Option "TearFree" "on"
EndSection
Section "DRI"
Group "video"
Mode 0666
EndSection
then the X screen is white and I can't see what I'm doing behind it...
but if I turn off vsync(blindly) by running `vsync off` in a terminal, to turn
off vsync in xfwm4 while X is running, then everything becomes visible and I'm
writing this whole thing here now. If I turn vsync on by `vsync glx` or `vsync
xpresent` or `vsync auto` then I get white screen again!
To turn on/off xfwm4's vsync I use the `vsync` script which can be found here:
https://gist.github.com/howaboutsynergy/c2d9d3f6f60497f5c95f445a326cfec8
(I'm attaching it just in case the url goes away)
xfwm4 4.14.0+12+g99352a08-1
xfconf 4.14.1-1
pygtk 2.24.0-8
xf86-video-ati 1:19.0.1.r7.gc7ed12cb-1
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