Saving power by disabling sound chip on Linux

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2 Responses to “Saving power by disabling sound chip on Linux”

  1. Just for reference, the output of a powertop –calibrate

    skidder@spetznas:~$ sudo powertop --calibrate
    Loaded 0 prior measurements
    Cannot load from file /var/cache/powertop/saved_parameters.powertop
    Starting PowerTOP power estimate calibration 
    Calibrating idle
    sh: 1: /usr/bin/xset: not found
    sh: 1: /usr/bin/xset: not found
    Calibrating: disk usage 
    Calibrating backlight
    .... device /sys/class/backlight/intel_backlight/brightness 
    Calibrating idle
    sh: 1: /usr/bin/xset: not found
    sh: 1: /usr/bin/xset: not found
    Calibrating: CPU usage on 1 threads
    Calibrating: CPU usage on 4 threads
    Calibrating: CPU wakeup power consumption
    Calibrating: CPU wakeup power consumption
    Calibrating: CPU wakeup power consumption
    Calibrating USB devices
    .... device /sys/bus/usb/devices/usb1/power/control 
    .... device /sys/bus/usb/devices/usb2/power/control 
    .... device /sys/bus/usb/devices/usb3/power/control 
    .... device /sys/bus/usb/devices/usb4/power/control 
    .... device /sys/bus/usb/devices/usb5/power/control 
    Calibrating radio devices
    Finishing PowerTOP power estimate calibration 
    Parameters after calibration:
    
    
    Parameter state 
    ----------------------------------
    Value           Name
     0.00           backlight (4)
     0.00           backlight-boost-100 (8)
     0.00           backlight-boost-40 (6)
     0.00           backlight-boost-80 (7)
     0.00           backlight-power (5)
    100.00          base power (31)
     1.56           cpu-consumption (3)
    39.50           cpu-wakeups (2)
     0.00           disk-operations (34)
     0.20           disk-operations-hard (33)
     0.00           eth0-link-100 (13)
     0.00           eth0-link-1000 (14)
     0.00           eth0-link-high (15)
     0.00           eth0-packets (16)
     0.00           eth0-powerunsave (12)
     0.00           eth0-up (11)
     0.56           gpu-operations (32)
     0.00           runtime-0000:00:00.0 (17)
     0.00           runtime-0000:00:02.0 (18)
     0.00           runtime-0000:00:1c.0 (19)
     0.00           runtime-0000:00:1c.1 (20)
     0.00           runtime-0000:00:1c.2 (21)
     0.00           runtime-0000:00:1c.3 (22)
     0.00           runtime-0000:00:1d.0 (23)
     0.00           runtime-0000:00:1d.1 (24)
     0.00           runtime-0000:00:1d.2 (25)
     0.00           runtime-0000:00:1d.3 (26)
     0.00           runtime-0000:00:1d.7 (27)
     0.00           runtime-0000:00:1f.2 (28)
     0.00           runtime-0000:01:00.0 (29)
     0.00           runtime-0000:05:00.0 (30)
     0.10           usb-device-1d6b-0001 (10)
     0.10           usb-device-1d6b-0002 (9)
    
    Score:    0.0  (  0.0)
    Guess:  100.1
    Actual:   0.0
    ----------------------------------
    Leaving PowerTOP
    

    As for what this all means, I am not sure but if someone can explain. Also, I’m not use about the line:

    sh: 1: /usr/bin/xset: not found

    Which is I think a tool for tweaking a mouse input device. Rather odd for powertop to ask for this. Maybe the message will disappear when I install xset, but it should not be needed on a NAS installation. For now I’ll just leave it.

  2. DEBEL

    Has been resolved thanks to, thank you.


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