There was a kernel patch which broke smart over sata. A stock 2.6.20/2.6.21 kernel seems to be fine. Perhaps something was backported from 2.6.22 on ubuntu where the problem is also in the stock (kernel.org) kernel.
Some references
Debian bug http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=428975 KLML http://groups.google.com/group/fa.linux.kernel/browse_frm/thread/be4ed50364851176
Fix/Patch
http://article.gmane.org/gmane.linux.ide/20799/raw
There was a kernel patch which broke smart over sata. A stock 2.6.20/2.6.21 kernel seems to be fine. Perhaps something was backported from 2.6.22 on ubuntu where the problem is also in the stock (kernel.org) kernel.
Some references
Debian bug http:// bugs.debian. org/cgi- bin/bugreport. cgi?bug= 428975 groups. google. com/group/ fa.linux. kernel/ browse_ frm/thread/ be4ed5036485117 6
KLML http://
Fix/Patch
http:// article. gmane.org/ gmane.linux. ide/20799/ raw