My symptoms match Barney's exactly: slow mouse, usually happens after suspend, CPU pegged. Alt-SysRq works to reboot, so it's definitely just the X server getting stuck. It's not a hard kernel crash.
I have an ATI Mobiliy M300 on a Dell Inspiron 6000. Here's a backtrace? (II) RADEON(0): Output: VGA-0, Detected Monitor Type: 0 (II) RADEON(0): Output: LVDS, Detected Monitor Type: 2 (II) RADEON(0): Added native panel mode: 1920x1200 (II) RADEON(0): Output: S-video, Detected Monitor Type: 0 disable LVDS disable LVDS enable LVDS [mi] EQ overflowing. The server is probably stuck in an infinite loop. Backtrace: 0: /usr/bin/X (xorg_backtrace+0x3b) [0x80e937b] 1: /usr/bin/X (mieqEnqueue+0x1ab) [0x80e8b6b] 2: /usr/bin/X (xf86PostMotionEventP+0xd2) [0x80c2d02] 3: /usr/bin/X (xf86PostMotionEvent+0x68) [0x80c2e88] 4: /usr/lib/xorg/modules/input/synaptics_drv.so (0x350000+0x3603) [0x353603] 5: /usr/lib/xorg/modules/input/synaptics_drv.so (0x350000+0x5e3d) [0x355e3d] 6: /usr/bin/X (0x8048000+0x6d5bf) [0x80b55bf] 7: /usr/bin/X (0x8048000+0x122744) [0x816a744] 8: (vdso) (__kernel_sigreturn+0x0) [0xe42400] 9: /lib/libdrm.so.2 (drmCommandNone+0x32) [0xd1b162] 10: /usr/lib/xorg/modules/drivers/radeon_drv.so (0x224000+0xa240c) [0x2c640c] 11: /usr/lib/xorg/modules/libexa.so (0x9d9000+0x47f8) [0x9dd7f8] 12: /usr/lib/xorg/modules/libexa.so (0x9d9000+0x4da6) [0x9ddda6] 13: /usr/lib/xorg/modules/libexa.so (0x9d9000+0x4ef3) [0x9ddef3] 14: /usr/lib/xorg/modules/libexa.so (exaMoveOutPixmap+0x48) [0x9db298] 15: /usr/lib/xorg/modules/libexa.so (0x9d9000+0x44f1) [0x9dd4f1] 16: /usr/lib/xorg/modules/libexa.so (0x9d9000+0xb09e) [0x9e409e] 17: /usr/lib/xorg/modules/libexa.so (exaOffscreenAlloc+0x2c4) [0x9e4a04] 18: /usr/lib/xorg/modules/libexa.so (0x9d9000+0x4cc4) [0x9ddcc4] 19: /usr/lib/xorg/modules/libexa.so (0x9d9000+0x55ea) [0x9de5ea] 20: /usr/lib/xorg/modules/libexa.so (0x9d9000+0x2369) [0x9db369] 21: /usr/lib/xorg/modules/libexa.so (0x9d9000+0xa2c7) [0x9e32c7] 22: /usr/lib/xorg/modules/libexa.so (0x9d9000+0xa8ca) [0x9e38ca] 23: /usr/bin/X (0x8048000+0xd8bb8) [0x8120bb8] 24: /usr/bin/X (CompositeGlyphs+0xa5) [0x81b9a25] 25: /usr/bin/X (0x8048000+0xd2cbf) [0x811acbf] 26: /usr/bin/X (0x8048000+0xce9d3) [0x81169d3] 27: /usr/bin/X (0x8048000+0x2a477) [0x8072477] 28: /usr/bin/X (0x8048000+0x1ed7a) [0x8066d7a] 29: /lib/tls/i686/cmov/libc.so.6 (__libc_start_main+0xe6) [0x652bd6] 30: /usr/bin/X (0x8048000+0x1e961) [0x8066961] -- [Radeon] [Lucid] [mi] EQ overflowing. The server is probably stuck in an infinite loop https://bugs.launchpad.net/bugs/567696 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server in ubuntu. _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp