Hi, I'm not subscribed, so please cc me on any reply. I've just had a complete system lock up with a kernel that I pulled, built and installed yesterday morning. IT was locked hard and I had to power off and on to get it back. The kernel log file has this snippet at the end: Feb 14 16:29:21 upstairs kernel: pci 0000:00:02.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16 Feb 14 16:29:21 upstairs kernel: pci 0000:00:02.0: setting latency timer to 64 Feb 14 16:29:21 upstairs kernel: [drm] Supports vblank timestamp caching Rev 1 (10.10.2010). Feb 14 16:29:21 upstairs kernel: [drm] No driver support for vblank timestamp query. Feb 14 16:29:22 upstairs kernel: [drm] Initialized i915 1.6.0 20080730 for 0000:00:02.0 on minor 0 Feb 14 16:44:27 upstairs kernel: render error detected, EIR: 0x00000010 Feb 14 16:44:27 upstairs kernel: IPEIR: 0x00000000 Feb 14 16:44:27 upstairs kernel: IPEHR: 0x01000000 Feb 14 16:44:27 upstairs kernel: INSTDONE: 0xfffffffe Feb 14 16:44:27 upstairs kernel: INSTPS: 0x0001e000 Feb 14 16:44:27 upstairs kernel: INSTDONE1: 0xffffffff Feb 14 16:44:27 upstairs kernel: ACTHD: 0x05204d80 Feb 14 16:44:27 upstairs kernel: page table error Feb 14 16:44:27 upstairs kernel: PGTBL_ER: 0x00000002 Feb 14 16:44:27 upstairs kernel: [drm:i915_report_and_clear_eir] *ERROR* EIR stuck: 0x00000010, masking Feb 14 16:45:09 upstairs kernel: [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung Feb 14 16:45:09 upstairs kernel: render error detected, EIR: 0x00000010 Feb 14 16:45:09 upstairs kernel: IPEIR: 0x00000000 Feb 14 16:45:09 upstairs kernel: IPEHR: 0x54f00006 Feb 14 16:45:09 upstairs kernel: INSTDONE: 0xffffffff Feb 14 16:45:09 upstairs kernel: INSTPS: 0x8001e02a Feb 14 16:45:09 upstairs kernel: INSTDONE1: 0xbfbbffff Feb 14 16:45:09 upstairs kernel: ACTHD: 0x0721207c Feb 14 16:45:09 upstairs kernel: page table error Feb 14 16:45:09 upstairs kernel: PGTBL_ER: 0x01000003 Feb 14 16:45:10 upstairs kernel: [drm:i915_reset] *ERROR* Failed to reset chip. and Xorg log file has: [mi] EQ overflowing. The server is probably stuck in an infinite loop. Backtrace: 0: /usr/X11/bin/X(xorg_backtrace+0x3b) [0x81352db] 1: /usr/X11/bin/X(mieqEnqueue+0x26c) [0x81144ec] 2: /usr/X11/bin/X(xf86PostMotionEventP+0xc2) [0x80c5a92] 3: /usr/X11/bin/X(xf86PostMotionEvent+0x87) [0x80c5c17] 4: /usr/X11/lib/xorg/modules/input//mouse_drv.so(+0x6e39) [0xb71e4e39] 5: /usr/X11/lib/xorg/modules/input//mouse_drv.so(+0x7a68) [0xb71e5a68] 6: /usr/X11/lib/xorg/modules/input//mouse_drv.so(+0x3f17) [0xb71e1f17] 7: /usr/X11/bin/X() [0x80ba1d7] 8: /usr/X11/bin/X() [0x80af49b] 9: [0xb77d4400] 10: /usr/X11R6/lib/libdrm.so.2(drmCommandWrite+0x3b) [0xb77b168b] 11: /usr/X11/lib/xorg/modules/drivers//intel_drv.so(I830Sync+0xc5) [0xb720b025] 12: /usr/X11/lib/xorg/modules/drivers//intel_drv.so(+0x49efa) [0xb723eefa] 13: /usr/X11/lib/xorg/modules//libexa.so(exaWaitSync+0x63) [0xb6f200a3] 14: /usr/X11/lib/xorg/modules//libexa.so(ExaDoPrepareAccess+0x7b) [0xb6f20ddb] 15: /usr/X11/lib/xorg/modules//libexa.so(ExaCheckPutImage+0xf8) [0xb6f28f08] 16: /usr/X11/lib/xorg/modules//libexa.so(+0x548c) [0xb6f2248c] 17: /usr/X11/bin/X() [0x817da72] 18: /usr/X11/bin/X(ProcPutImage+0x164) [0x8083864] 19: /usr/X11/bin/X(Dispatch+0x2bc) [0x808706c] 20: /usr/X11/bin/X(main+0x46a) [0x806be6a] 21: /lib/libc.so.6(__libc_start_main+0xe6) [0xb7331b86] 22: /usr/X11/bin/X() [0x806b2c1] followed by many instances of thse two lines: [mi] mieqEnequeue: out-of-order valuator event; dropping. [mi] EQ overflowing. The server is probably stuck in an infinite loop. Xorg server is version 1.5.3 and xorg intel driver is version 2.7.1 bzipped copies of the kernel and Xorg logs are attached but, please let me know if any additional diagnostics are needed. Thanks, Chris -- The more I see, the more I know. The more I know, the less I understand. Changing Man - Paul Weller