Alexey, you did good in making the patch acceptable. (And since you had success, even better!)
So second step would be to flip the settings the right way.
hdparm -B254 needs to be reintroduced because bug #172282 has changed that setting in the meantime.
(Yann who reported 254 did not work for him might very well have suffered from /etc/acpi/power.sh messing around. I happen to have a WD drive and have experienced exactly this.)
Alexey, you did good in making the patch acceptable. (And since you had success, even better!)
So second step would be to flip the settings the right way.
hdparm -B254 needs to be reintroduced because bug #172282 has changed that setting in the meantime.
(Yann who reported 254 did not work for him might very well have suffered from /etc/acpi/power.sh messing around. I happen to have a WD drive and have experienced exactly this.)