[ltp] Temperature sensors on X201s
Stefan Monnier
linux-thinkpad@linux-thinkpad.org
Wed, 05 May 2010 22:24:07 -0400
I just got an X201s and must say I'm pretty pleased.
Most things work fine, but I have some minor issues still:
- cat /proc/acpi/ibm/thermal gives me just:
temperatures: 43 0 0 0 0 0 0 0
now 43° is fine, but how come there's only 1 value there. Are there
really no other sensors (I understand that the GPU and CPU share
chip, so to some extent their temperature should be close enough that
I don't need a separate reading, but I would still expect a few more).
- /sys/class/power_supply/BAT0/current_now seems to sometimes report
power rather than current (i.e. sometimes it's 1000 times
/sys/devices/platform/smapi/BAT0/current_avg and sometimes it's 1000
times /sys/devices/platform/smapi/BAT0/power_avg). Not clear when it
changes from one to the other. powertop also seems confused about it
(when current_now correctly gives current, powertop seems to interpret
it as power).
- Xorg only works with KMS. Without it, it crashes the whole system
(black screen, typically with blinking caps-lock led, tho not always).
- hibernate tends to corrupt some part of the memory (I have the same
thing on my MSI Wind, where disabling KMS works around the problem).
- I currently get an idle power consumption somewhere between 8W and 9W,
which seems slightly higher than needed. powertop doesn't seem of
much use (tells me to use min_power on SATA even though it's already
set that way).
Any hint to fix those?
Stefan