Ubuntu
powertop package

SATA ALPM link power management setting not detected properly

Bug #305895 reported by hackel
16
This bug affects 3 people
Affects Status Importance Assigned to Milestone
powertop (Ubuntu)
Confirmed
Undecided
Unassigned

Bug Description

Binary package hint: powertop

PowerTOP always gives me the suggestion:

Suggestion: Enable SATA ALPM link power management via:
  echo min_power > /sys/class/scsi_host/host0/link_power_management_policy
or press the S key.

However, it is already set to min_power (by default, I believe).

Revision history for this message
Krzysztof Giemza (krgi) wrote :

For me I have "max_performance" by default in maverick.

Revision history for this message
Avi Kelman (fiendish) wrote :

The problem is that the code for powertop always suggests catting to host0 if it finds something other than min_power in ANY of /sys/class/scsi_host/host*/link_power_management_policy

My host0/... has min_power, but host1/... et al have max_performance, so powertop complains about host0 because it's a hardcoded string.

Launchpad Janitor (janitor)
Changed in powertop (Ubuntu):
status: New → Confirmed
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