I have the same problem on an IBM ThinkPad laptop, a T41p. Same error message about DSDT in dmesg.
In my case, the system still believes CPU throttling is supported according to /proc/acpi; however, the CPU never actually changes speed. I tried rebuilding my ACPI firmware as per the comments, but that made things even worse--X then caused the system to shut down. -- CPU overheats during high usage "throttling <not supported>" https://launchpad.net/bugs/22336 -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
