I had the same problem with a dell latitude C640 with ATI Technologies Inc Radeon Mobility M7 LW [Radeon Mobility 7500]
X crashed when I closed the screen. This happened under Dapper with xorg-air but not with the default x server. From Edguy this happened everytime, but since I added the : Section "ServerFlags" Option "NoPM" EndSection the problem doesn't appear anymore /var/log/messages : Nov 6 02:06:16 latitude gnome-power-manager: (kjo) Extinction de l'écran (DPMS) car L'écran du portable a été rabattu (branché sur secteur) Nov 6 02:06:16 latitude kernel: [ 313.599000] video bus notify Nov 6 02:06:16 latitude gconfd (kjo-5081): Réception du signal 15, arrêt correct Nov 6 02:06:16 latitude gconfd (kjo-5081): Sortie Nov 6 02:06:18 latitude kernel: [ 316.327000] mtrr: 0xe0000000,0x8000000 overlaps existing 0xe0000000,0x2000000 Nov 6 02:06:18 latitude last message repeated 2 times Nov 6 02:06:18 latitude kernel: [ 316.327000] agpgart: Found an AGP 2.0 compliant device at 0000:00:00.0. Nov 6 02:06:18 latitude kernel: [ 316.327000] agpgart: Putting AGP V2 device at 0000:00:00.0 into 1x mode Nov 6 02:06:18 latitude kernel: [ 316.328000] agpgart: Putting AGP V2 device at 0000:01:00.0 into 1x mode Nov 6 02:06:18 latitude kernel: [ 316.544000] [drm] Setting GART location based on new memory map Nov 6 02:06:18 latitude kernel: [ 316.544000] [drm] writeback test succeeded in 1 usecs -- Xorg exits when it receives an ACPI button/lid event https://launchpad.net/bugs/61746 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
