April 13, 2012
solution: if linux (ubuntU?) freezes in boot (splash or log)
edit /etc/default/grub:
and possibly disable acpi 2.0 (not all acpi, 2.0 only) in BIOS
This problem seems to be frequent on AMD (I have AMD Phenom X6 1090T).
Bug exists at least in Ubuntu since 2008: bug on launchpad. Problem started to appear in 10.04, but exists even in Ubuntu 11.11. The bug on launchpad had been discussed in MANY comments from 2008 to May 2011, until in July 2011 it was AUTO CLOSED with resulution Confirmed->WON'T FIX. IDIOTS?
GRUB_CMDLINE_LINUX_DEFAULT="acpi_skip_timer_override"
and possibly disable acpi 2.0 (not all acpi, 2.0 only) in BIOS
This problem seems to be frequent on AMD (I have AMD Phenom X6 1090T).
Bug exists at least in Ubuntu since 2008: bug on launchpad. Problem started to appear in 10.04, but exists even in Ubuntu 11.11. The bug on launchpad had been discussed in MANY comments from 2008 to May 2011, until in July 2011 it was AUTO CLOSED with resulution Confirmed->WON'T FIX. IDIOTS?
January 12, 2012
Ubuntu hanging during boot problem fix
This problem of freezing of ubuntu during boot (while udev is fighting for acpi control, actually) can be cured very easy: turn off ACPI 2.0 in BIOS.
