Based on this suggestion, I want to edit /etc/default/grub to add the line:GRUB_CMDLINE_LINUX=acpi_osi=LinuxHowever, I don't have that file on my system. What should I do?
Missing /etc/default/grub in fedora15
fedora;grub2
Well /etc/default is a Debian/Ubuntu thing, so you're unlikely to find it in Fedora.You don't need it though - just add the option to the command line for the current entries in grub.conf and Fedora will preserve it when installing new kernels.