Ok, i have had a look in the /var/log/messages log and received a load of these messages about the time that the crash/hung state occurred.
Jul 17 12:11:20 sy001428 kernel: [15502.322506] SysRq : HELP : loglevel(0-9) reBoot Crashdump terminate-all-tasks(E) memory-full-oom- kill(F) kill-all-tasks(I) saK show-backtrace-all-active-cpus(L) show- memory-usage(M) nice-all-RT-tasks(N) powerOff show-registers(P) show- all-timers(Q) unRaw Sync show-task-states(T) Unmount show-blocked- tasks(W) dumpZ-ftrace-buffer I have no idea what this means, however i'm sure its not good. After these messages i removed then reinserted my USB mouse receiver which was correctly picked up in the log and identified properly, so it proves that the machine is still active in the background. It has also picked up a load of btnx commands sent from the mouse. I assume the restart at the end is the result of holding the power button down. Jul 17 12:11:36 sy001428 kernel: [15518.272068] usb 2-1: USB disconnect, address 2 Jul 17 12:11:37 sy001428 kernel: [15520.000024] usb 2-1: new full speed USB device using uhci_hcd and address 3 Jul 17 12:11:37 sy001428 kernel: [15520.184762] usb 2-1: configuration #1 chosen from 1 choice Jul 17 12:11:37 sy001428 kernel: [15520.192797] input: Logitech USB Receiver as /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1:1.0/input/input43 Jul 17 12:11:38 sy001428 kernel: [15520.244115] generic-usb 0003:046D:C51A.0003: input,hidraw0: USB HID v1.11 Mouse [Logitech USB Receiver] on usb-0000:00:1d.0-1/input0 Jul 17 12:11:38 sy001428 kernel: [15520.251387] input: Logitech USB Receiver as /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1:1.1/input/input44 Jul 17 12:11:38 sy001428 kernel: [15520.292170] generic-usb 0003:046D:C51A.0004: input,hiddev96,hidraw1: USB HID v1.11 Device [Logitech USB Receiver] on usb-0000:00:1d.0-1/input1 Jul 17 12:11:40 sy001428 kernel: [15523.169490] input: btnx keyboard as /devices/virtual/input/input45 Jul 17 12:11:41 sy001428 kernel: [15523.269132] input: btnx mouse as /devices/virtual/input/input46 Jul 17 12:11:41 sy001428 kernel: [15523.368534] input: btnx keyboard as /devices/virtual/input/input47 Jul 17 12:11:41 sy001428 kernel: [15523.368971] input: btnx keyboard as /devices/virtual/input/input48 Jul 17 12:11:41 sy001428 kernel: [15523.377477] input: btnx keyboard as /devices/virtual/input/input49 Jul 17 12:11:41 sy001428 kernel: [15523.416136] input: btnx mouse as /devices/virtual/input/input50 Jul 17 12:11:41 sy001428 kernel: [15523.421470] input: btnx keyboard as /devices/virtual/input/input51 Jul 17 12:11:41 sy001428 kernel: [15523.483108] input: btnx mouse as /devices/virtual/input/input52 Jul 17 12:11:41 sy001428 kernel: [15523.547808] input: btnx mouse as /devices/virtual/input/input53 Jul 17 12:11:41 sy001428 kernel: [15523.613848] input: btnx mouse as /devices/virtual/input/input54 Jul 17 12:13:23 sy001428 syslogd 1.5.0#5ubuntu3: restart. Any insight into the Sysreq messages would be great. Thanks -- Computer hangs after switch user or lock screen https://bugs.launchpad.net/bugs/223421 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
