Ubuntu
linux package

  1. Bug #1598312
  2. Comment #6

Comment 6 for bug 1598312

Revision history for this message
Vladimir Marko (swelef) wrote :

Same on HP Compaq nx6325 with AMD Turion(tm) 64 X2 Mobile Technology TL-52, including the fan running at full speed. But given the the thermal trip points, I think the CPU frequency scaling works as intended.

When idle, with the old kernel I see

$ uname -r
3.13.0-101-generic
$ cat /sys/devices/virtual/thermal/thermal_zone0/temp
42000
$ cat /sys/devices/virtual/thermal/thermal_zone0/trip_point_*_temp
105000
95000
75000
65000
55000
40000

but with the new kernel it is

$ uname -r
4.4.0-47-generic
$ cat /sys/devices/virtual/thermal/thermal_zone0/temp
32000
$ cat /sys/devices/virtual/thermal/thermal_zone0/trip_point_*_temp
105000
15900
15900
15900
15900
15900

So it's essentially trying to keep the CPU from overheating.

Additionally, shutting down the laptop does not work, it gets the laptop to some weird power state where it looks like powered down but it won't boot after turning back on. Then I have to long-press the power button to shut down properly. Reboot just gets stuck. If I understand correctly, this is all related to ACPI, so I guess I should learn how to debug ACPI issues.