Ubuntu
linux package

  1. Bug #1093217
  2. Comment #42

Comment 42 for bug 1093217

Revision history for this message
Tom Thompson (tom2460) wrote : Re: Ubuntu 12.04 10-20min boot delay (From 3.2.0.29->3.2.0.30) [Lenovo IdeaPad Z580]

If the battery is removed from the laptop, then it will boot and reboot normally in a few seconds.

Another observation is that after the slow boot, the line "ACPI: Battery Slot [BAT1] (battery present)" shows up twice in dmesg. Once early on and again after the timeouts and AE_AML_INFINITE_LOOP ACPI exception. But with the battery removed the line "ACPI: Battery Slot [BAT1] (battery absent)" appears twice and only separated by a millisecond or so.

I see there was a change to drivers/acpi/battery.c between 3.0.29 and 3.0.35. See http://www.kernel.org/pub/linux/kernel/v3.0/ChangeLog-3.0.34