After many attempts, it turns out the "pm-utils" package contained two "hooks" that caused the ATA errors. To resolve this, the following files must be added:
/etc/pm/power.d/harddrive /etc/pm/power.d/sata_alpm Once these two placeholder files are added, they automatically override the corresponding two bundled hooks, and pm-utils will not cause ATA bus errors anymore. I feel safer now :-) This is on Gentoo Linux with pm-utils 1.4.1, by the way. On Mon, Nov 29, 2010 at 11:30 PM, vick <[email protected]> wrote: > >I have heard of similar issues if we switch > /sys/class/scsi_host/*/link_power_management_policy between min_power and > max_performance, but I'm not doing that. > > >Is the DSDT doing something behind our back, when we plug/unplug AC power > ? > > You might not be doing it manually but there are power management services > (at least in KDE) that change to min_power when you unplug the AC adapter, I > would check if you have one of those and try setting the power profile not > to switch to min_power. > > > _______________________________________________ > Mailing list: > https://launchpad.net/~sony-vaio-z-series<https://launchpad.net/%7Esony-vaio-z-series> > Post to : [email protected] > Unsubscribe : > https://launchpad.net/~sony-vaio-z-series<https://launchpad.net/%7Esony-vaio-z-series> > More help : https://help.launchpad.net/ListHelp > >
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