Me too. A workaround that'll cost you a little battery life (but probably not more than a few tens of minutes out of four-plus hour runtimes) is to add
processor.max_cstate=3to your grub command line. This turns off the problematic C4 power state of deep CPU sleep at reduced voltage, but otherwise leaves power management unaffected.
( For Ubuntu users,
dpkg-reconfigure grub2will offer to let you edit the kernel command line. )
Thanks for this. On my macbook2,1, I had to supply processor.max_cstate=2 on the command line to eliminate the bloody, dreaded idle squeal. Apparently even C3 is problematic for this guy. But oh, is it ever nice to have this sorted out for good.ReplyDelete