At my ThinkPad T420 I get these syslog messages when I plug off the power cable of a system booted from an external USB drive (root / is /dev/sdb3):
2013-01-14T22:20:46.028+01:00 n22 kernel: ata1.00: failed to get Identify Device Data, Emask 0x1 2013-01-14T22:20:46.029+01:00 n22 kernel: ata1.00: failed to get Identify Device Data, Emask 0x1 2013-01-14T22:20:46.029+01:00 n22 kernel: ata1.00: configured for UDMA/100 2013-01-14T22:20:46.029+01:00 n22 kernel: ata1: EH complete 2013-01-14T22:20:46.029+01:00 n22 kernel: sd 0:0:0:0: [sda] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA 2013-01-14T22:20:46.083+01:00 n22 kernel: thinkpad_acpi: unknown possible thermal alarm or keyboard event received 2013-01-14T22:20:46.083+01:00 n22 kernel: thinkpad_acpi: unhandled HKEY event 0x6040 2013-01-14T22:20:46.083+01:00 n22 kernel: thinkpad_acpi: please report the conditions when this event happened to ibm-acpi-de...@lists.sourceforge.net 2013-01-14T22:20:46.085+01:00 n22 kernel: thinkpad_acpi: EC reports that Thermal Table has changed 2013-01-14T22:20:46.000+01:00 n22 logger: ACPI event : ibm/hotkey HKEY 00000080 00006040 2013-01-14T22:20:46.000+01:00 n22 logger: ACPI event : ibm/hotkey HKEY 00000080 00006030 2013-01-14T22:20:46.305+01:00 n22 kernel: EXT4-fs (sdb3): re-mounted. Opts: commit=600 and when I plug in the power cable I get the similar events : 2013-01-14T22:20:51.476+01:00 n22 kernel: ata1.00: failed to get Identify Device Data, Emask 0x1 2013-01-14T22:20:51.477+01:00 n22 kernel: ata1.00: failed to get Identify Device Data, Emask 0x1 2013-01-14T22:20:51.477+01:00 n22 kernel: ata1.00: configured for UDMA/100 2013-01-14T22:20:51.477+01:00 n22 kernel: ata1: EH complete 2013-01-14T22:20:51.477+01:00 n22 kernel: sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA 2013-01-14T22:20:51.514+01:00 n22 kernel: thinkpad_acpi: unknown possible thermal alarm or keyboard event received 2013-01-14T22:20:51.514+01:00 n22 kernel: thinkpad_acpi: unhandled HKEY event 0x6040 2013-01-14T22:20:51.514+01:00 n22 kernel: thinkpad_acpi: please report the conditions when this event happened to ibm-acpi-de...@lists.sourceforge.net 2013-01-14T22:20:51.516+01:00 n22 kernel: thinkpad_acpi: EC reports that Thermal Table has changed 2013-01-14T22:20:51.000+01:00 n22 logger: ACPI event : ibm/hotkey HKEY 00000080 00006040 2013-01-14T22:20:51.000+01:00 n22 logger: ACPI event : ibm/hotkey HKEY 00000080 00006030 2013-01-14T22:20:52.170+01:00 n22 kernel: EXT4-fs (sdb3): re-mounted. Opts: commit=0 b/c of the unknown event 0x6040 the ibm acpi list is Cc'ed, but what makes me really wondering is why / is remounted. -- MfG/Sincerely Toralf Förster pgp finger print: 7B1A 07F4 EC82 0F90 D4C2 8936 872A E508 7DB6 9DA3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
