Public bug reported:
Binary package hint: xserver-xorg-video-ati
Hardware: ATI Rage Pro Turbo AGP 2X
Desktop: Gnome default, 800x600
Frequently on startup, dark vertical stripes appear in an approximately
64x64 area in the top left corner of the screen; they usually disappear
after a while and are not shown on a screenshot.
My Allegro programs only seem to be able to change the screen mode once
in each run; any attempt to do so again (including the automatic return
to normal desktop resolution on exit) fails with the error message below
and crashes/hangs the program.
Both these problems appeared on installation of Ubuntu 6.10 and were not
present in Debian 3.1 (XFree86).
(My system also crashes a great deal, a common pattern being X
restarting over and over again, but I think this is a separate problem.)
Test program (requires liballegro4.2-dev):
#include <allegro.h>
int main(){
allegro_init();
install_timer();
install_keyboard();
set_color_depth(32);
set_gfx_mode(GFX_AUTODETECT_FULLSCREEN,640,480,0,0);
textprintf_ex(screen,font,100,200,255,0,"Press a key");
readkey();
/*hangs if next line is uncommented*/
/*set_gfx_mode(GFX_AUTODETECT_FULLSCREEN,800,600,0,0);*/
/*readkey();*/
exit(0);
}
END_OF_MAIN()
As above (appeared to run normally, but on exit the following error appeared
and resolution stayed at 640x480)
$ gcc -o gfxerror gfxerror.c `allegro-config --libs`
$ ./gfxerrorX Error of failed request: BadValue (integer parameter out of
range for operation)
Major opcode of failed request: 134 (XFree86-VidModeExtension)
Minor opcode of failed request: 10 (XF86VidModeSwitchToMode)
Value in failed request: 0x2600001
Serial number of failed request: 235
Current serial number in output stream: 240
With second mode change uncommented:
$ gcc -o gfxerror gfxerror.c `allegro-config --libs`
$ ./gfxerror
X Error of failed request: BadValue (integer parameter out of range for
operation)
Major opcode of failed request: 134 (XFree86-VidModeExtension)
Minor opcode of failed request: 10 (XF86VidModeSwitchToMode)
Value in failed request: 0x2600001
Serial number of failed request: 189
Current serial number in output stream: 194
[Program appeared to have closed, but terminal prompt did not reappear,
so pressed Ctrl+C. Resolution again stayed at 640x480]
Aborted (core dumped)
$
** Affects: xserver-xorg-video-ati (Ubuntu)
Importance: Undecided
Status: Unconfirmed
--
[rage] Striped corner and mode switch failure
https://launchpad.net/bugs/82434
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