The crude way is this:
for scaling in $(ls -d /sys/devices/system/cpu/cpufreq/policy*) ; do
cat ${scaling}/cpuinfo_min_freq > ${scaling}/scaling_max_freq
done
where ${scaling} can be a value from between cpuinfo_min_freq and
cpuinfo_max_freq in those same directories.
You undo it by this using ${scaling}/cpuinfo_max_freq on the above cat line.
This will tell you what the current max freq is:
grep -v dfadsfd /sys/devices/system/cpu/cpufreq/policy*/scaling_max_freq
On Wed, May 20, 2026 at 6:27 AM ja <[email protected]> wrote:
>
> On Wed, 2026-05-20 at 10:35 +0930, Tim via users wrote:
> > On Tue, 2026-05-19 at 12:51 -0400, Go Canes wrote:
> > > Check your BIOS settings - there may be an option there equivalent to
> > > a "save power" setting, or even an advanced setting to limit the
> > > clock speed.
> >
> > Sometimes there's a thing called "cool & quiet."
> >
> > --
> >
> > uname -rsvp
> > Linux 3.10.0-1160.119.1.el7.x86_64 #1 SMP Tue Jun 4 14:43:51 UTC 2024 x86_64
> > (yes, this is the output from uname for this PC when I posted)
> >
> > Boilerplate: All unexpected mail to my mailbox is automatically deleted.
> > I will only get to see the messages that are posted to the mailing list.
> >
> F44, 7.0.8-200.fc44.x86_64, xfce4
>
> Is power-profiles-daemon installed and running?
>
> [root@miami:/home/ja]$ rpm -qa|grep power-profiles-daemon
> power-profiles-daemon-0.30-3.fc44.x86_64
>
> [root@miami:/home/ja]$ systemctl status power-profiles-daemon.service
> ...
> Active: active (running) since Mon 2026-05-18
> ...
> In which case I use these aliases
>
> ja@miami ~ 7$ alias | grep mode
> alias pmode='powerprofilesctl get'
> alias pmode0='powerprofilesctl set power-saver'
> alias pmode1='powerprofilesctl set balanced'
> alias pmode2='powerprofilesctl set performance'
>
> Which my motherboard/CPU understands
>
> 32 × AMD RYZEN AI MAX+ 395 w/ Radeon 8060S
>
>
>
> --
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