Not sure if I should add this here as this bug seems old, but not yet resolved.
Running 9.10, I have a similar power-off activity. I believe it is temperature-related. Here is the relevant log output just before the power-off. The CTRL-EVENT-SCAN-RESULTS appears repeatedly. Then the ACPI errors. Then the next CTRL-EVENT-SCAN-RESULTS. Then the machine shuts off immediately. In this case you can see I left it for awhile before rebooting. There was some dust-bunny removal going on... :-) I should mention that this is a Toshiba A70 with a Phoenix BIOS. I seem to generally have problems with ACPI related stuff; for example, the laptop won't resume after suspend. I've tried the latest kernel to fix that bug (filed under a separate report). Finally - I'm willing to test aggressively as I have spare disks and can create test systems on them. Feb 20 15:02:31 temuko wpa_supplicant[986]: CTRL-EVENT-SCAN-RESULTS Feb 20 15:03:17 temuko kernel: [12647.549823] ACPI Error: No handler for Region [ECR_] (f700e410) [EmbeddedControl] 20090521 evregion-319 Feb 20 15:03:17 temuko kernel: [12647.549838] ACPI Error: Region EmbeddedControl(3) has no handler 20090521 exfldio-294 Feb 20 15:03:17 temuko kernel: [12647.549851] ACPI Error (psparse-0537): Method parse/execution failed [\_SB_.EPWR.PCLK] (Node f700d858), AE_NOT_EXIST Feb 20 15:03:17 temuko kernel: [12647.549892] ACPI Error (psparse-0537): Method parse/execution failed [\_SB_.PCI0.LPC0.EC0_._Q1E] (Node f7013930), AE_NOT_EXIST Feb 20 15:04:04 temuko kernel: [12694.368393] CPU0: Temperature above threshold, cpu clock throttled (total events = 1) Feb 20 15:04:04 temuko kernel: [12694.368402] CPU1: Temperature above threshold, cpu clock throttled (total events = 1) Feb 20 15:04:04 temuko kernel: [12694.368416] Disabling lock debugging due to kernel taint Feb 20 15:04:04 temuko kernel: [12694.371925] CPU1: Temperature/speed normal Feb 20 15:04:04 temuko kernel: [12694.371938] CPU0: Temperature/speed normal Feb 20 15:04:31 temuko wpa_supplicant[986]: CTRL-EVENT-SCAN-RESULTS -- Laptop powers-off unexpectedly https://bugs.launchpad.net/bugs/53052 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