915gm/945gm/XAA lockup with gray blocks when switching video mode

Juan Pablo Salazar Bertin snifer_ at hotmail.com
Wed Oct 10 14:17:44 PDT 2007

I'd like to add some things about this bug:

It has been reported also at https://bugs.freedesktop.org/show_bug.cgi?

After several debugs, I've determined that the laptop hangs in the following 
loop in file i830_driver.c:

   for(i = 0; i < 256; i++) {
      OUTREG(PALETTE_A + (i << 2), pI830->savePaletteA[i]);

You can see full gdb output here: https://bugs.freedesktop.org/attachment.cgi?
After the last line, the laptop hangs.

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