Public bug reported:
hello, I have a laptop with a nvidia 330M graphics card (no igpu intel
integrated)
since ubuntu 18.04, I noted that the frequencies used was not the lowest, which
resulted in heating my laptop a little more.
an example, here are my frequencies of my graphics card:
cat /sys/kernel/debug/dri/0/pstate
03: core 135 MHz shader 270 MHz memory 135 MHz
07: core 405 MHz shader 810 MHz memory 324 MHz
0f: core 575 MHz shader 1265 MHz memory 790 MHz
DC: core 405 MHz shader 810 MHz memory 324 MHz
we can see here that the frequency 07: core 405 MHz shader 810 MHz 324 MHz
memory are used
instead of frequencies 03: core 135 MHz shader 270 MHz memory 135 MHz
at each boot, I have to log in as root and modify it with the command:
echo 03 > /sys/kernel/debug/dri/0/pstate
is it a bug or is it wanted by ubuntu?
thank you
kernel : 4.15.0-29-generic
lsb_release -rd
Description: Ubuntu 18.04 LTS
Release: 18.04
apt-cache policy xserver-xorg-video-nouveau
xserver-xorg-video-nouveau:
Installé : 1:1.0.15-2
Candidat : 1:1.0.15-2
Table de version :
*** 1:1.0.15-2 500
500 http://fr.archive.ubuntu.com/ubuntu bionic/main amd64 Packages
100 /var/lib/dpkg/status
** Affects: xserver-xorg-video-nouveau (Ubuntu)
Importance: Undecided
Status: New
** Tags: kernel-bug
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You received this bug notification because you are a member of Ubuntu-X,
which is subscribed to xserver-xorg-video-nouveau in Ubuntu.
https://bugs.launchpad.net/bugs/1782975
Title:
recloking with nouveau driver
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-nouveau/+bug/1782975/+subscriptions
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