Had the same problem on lenovo x220 laptop under ubuntu 12.10 3.5.26 Fiddling with hdparm/apm had no effect. Problem vanished after fsck'ing my ext4 partitions (in my case, using recovery mode menu option).
Had the same problem on lenovo x220 laptop under ubuntu 12.10 3.5.26
Fiddling with hdparm/apm had no effect.
Problem vanished after fsck'ing my ext4 partitions (in my case, using recovery mode menu option).