Re: Bug#855183: linux-image-4.9.0-0.bpo.1-amd64: modprobe intel_rapl_perf stay in uninterruptible sleep
From: Miloslav HÅla
Date: Mon Feb 20 2017 - 17:34:19 EST
Dne 17.02.2017 v 11:47 Thomas Gleixner napsal(a):
What's really confusing is this information from the bug report:
" When I changed:
- from Energy Efficient
- to Custom
Energy Performance BIAS Setting:
- from Balanced Performance
- to Performance
problem disappeared. systemd-udevd starts normally, module can be
normally rmmod/insmod'ed now, load is 0.07."
Miloslav: Is there any chance you can try a 4.10-rc8 kernel on that
I compiled 4.10-rc8 kernel with a stock
'/boot/config-4.9.0-0.bpo.1-amd64' config from Debian Jessie backports.
Then I reverted BIOS settings to previous state and rebooted the server.
Kernel and all modules loaded normally, rmmod/insmod intel_rapl_perf
Then, without any BIOS change, I rebooted with stock 4.9.0-0.bpo.1-amd64
and suprisingly, everything works, I cannot reproduce it.
My knowledge on the field of BIOS are shallow. I don't know what I can
do to reproduce the bug now.
King redards, Miloslav