I've found that some problems related to xserver-xorg-video-intel may be cured by adding "modeset=0" when loading i915 module. I've tried that, but it didn't cure the problem. X windows crashed again a few minutes ago :-(.
Now at the end of the Xorg.0.log file I've found the following information: (II) AIGLX: Suspending AIGLX clients for VT switch (II) intel(0): xf86UnbindGARTMemory: unbind key 0 (II) Open ACPI successful (/var/run/acpid.socket) (II) AIGLX: Resuming AIGLX clients after VT switch (II) intel(0): xf86BindGARTMemory: bind key 0 at 0x07fff000 (pgoffset 32767) (II) intel(0): Fixed memory allocation layout: (II) intel(0): 0x00fdf000: end of stolen memory (II) intel(0): 0x00fdf000-0x07ffefff: DRI memory manager (114816 kB) (II) intel(0): 0x07fff000-0x07ffffff: overlay registers (4 kB, 0x00000000361c400 0 physical ) (II) intel(0): 0x08000000: end of aperture (II) intel(0): BO memory allocation layout: (II) intel(0): 0x00fdf000: start of memory manager (II) intel(0): 0x01000000-0x017fffff: front buffer (8192 kB) X tiled (II) intel(0): 0x01800000-0x01804fff: HW cursors (20 kB) (II) intel(0): 0x07fff000: end of memory manager (II) intel(0): Output configuration: (II) intel(0): Pipe A is on (II) intel(0): Display plane A is now enabled and connected to pipe A. (II) intel(0): Output VGA is connected to pipe A (II) MLK Trust Mouse 15313: Device reopened after 1 attempts. (II) Sleep Button: Device reopened after 1 attempts. (II) Power Button: Device reopened after 1 attempts. (II) AT Translated Set 2 keyboard: Device reopened after 1 attempts. -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org