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set $SDL_VIDEODRIVER=x11 on Linux to prevent sudo kvm from fighting for video card 

Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Acked-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
This commit is contained in:
Michael Tokarev 2011-05-08 01:18:30 +04:00 committed by Aurelien Jarno
parent 60e0df25e4
commit 1de9756b97
1 changed files with 12 additions and 0 deletions
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12
ui/sdl.c
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@ -831,6 +831,18 @@ void sdl_display_init(DisplayState *ds, int full_screen, int no_frame)
if (!full_screen) { if (!full_screen) {
setenv("SDL_VIDEO_ALLOW_SCREENSAVER", "1", 0); setenv("SDL_VIDEO_ALLOW_SCREENSAVER", "1", 0);
} }
#ifdef __linux__
/* on Linux, SDL may use fbcon|directfb|svgalib when run without
* accessible $DISPLAY to open X11 window. This is often the case
* when qemu is run using sudo. But in this case, and when actually
* run in X11 environment, SDL fights with X11 for the video card,
* making current display unavailable, often until reboot.
* So make x11 the default SDL video driver if this variable is unset.
* This is a bit hackish but saves us from bigger problem.
* Maybe it's a good idea to fix this in SDL instead.
*/
setenv("SDL_VIDEODRIVER", "x11", 0);
#endif
/* Enable normal up/down events for Caps-Lock and Num-Lock keys. /* Enable normal up/down events for Caps-Lock and Num-Lock keys.
* This requires SDL >= 1.2.14. */ * This requires SDL >= 1.2.14. */