2016-09-18 15:44 GMT+02:00 Ben Hutchings <b...@decadent.org.uk>:
> Control: tag -1 moreinfo
> On Sun, 2016-09-18 at 14:46 +0200, Alessio Gaeta wrote:
>> Package: src:linux
>> Version: 4.7.2-1+s1
>> Severity: important
>> Hello,
>> I'm facing a power issue with the Linux 4.7 kernel.
>> Every time the system goes idle (the configured delay passes and the display
>> goes black), the frequency of all cores get maxed, even if all cores are 
>> idle.
>> Evident symptoms are the fan spinning loudly and the errors logged in journal
>> stating the thermal threshold being surpassed and the CPU throttled.
>> In detail, the frequency of all cores raises from ~800 MHz to 2.6 GHz for 
>> all 8
>> cores of my i7. I can reproduce the behavior 100% of times, by connecting via
>> ssh to the affected system and launching powertop.
>> The issue does not exists in Linux 4.6 (to wich I will stick for now), so I
>> guess the problem resides in kernel, not in other packages.
>> You have all system information here below (gathered by repotbug). Ask any
>> further info if needed. Thank you!
> [...]
> Please test with bbswitch and acpi_call removed.


tested again:

1. systemctl stop bumblebeed.service
2. modprobe -r bbswitch
3. modprobe -r acpi_call
4. systemctl stop vboxweb.service
5. modprobe -r vboxpci vboxnetflt vboxnetadp vboxdrv

(removed all out-of-tree modules, just to be sure).

Same result: on display idle the CPU frequency got maxed on all cores.

Tell me if you need more info.

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