Ubuntu
linux-lts-raring package

  1. Bug #1231305
  2. Comment #29

Comment 29 for bug 1231305

Revision history for this message
Anthony Wong (anthonywong) wrote :

Looks like the BIOS is flawed when it's running the win8 path.

Can you add the acpi_osi=\"!Windows 2012\" to the grub command line when booting the 3.8 kernel and see if the problem still exists? You can do that by adding acpi_osi=\"!Windows 2012\" to the variable "GRUB_CMDLINE_LINUX_DEFAULT" in /etc/default/grub:

e.g:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_osi=\"!Windows 2012\""

Then run "sudo update-grub".