(In reply to Peter Ries from comment #99)
> (In reply to Henri from comment #95)
> > For me, the patch did not completely fix the issue. From time to time, I
> > still experience my Ryzen to be stuck at 544 Mhz after unplugging it from
> > the power, while sleeping.
> >
> > Laptop: HP Elitebook 845 G10
> > Processor: Ryzen 7 7840U
> >
> > OS: NixOS 25.05
> > Kernel: 6.15.5 (linuxPackages_latest)
> >
> > I have also run (an 4 month old version of) the s2_idle script, with the
> > output being here: https://paste.debian.net/hidden/a701167b/
>
> I have same hardware with latest BIOS. Running Arch based Endeavour OS.
> Kernel 6.16.3-arch1-1 ATM.
>
> I still have this annoying bug. Thought it was gone, but obviously I didn't
> unplug while in suspend that often. But the last days I worked more away
> from desk and needed to unplug when suspended and irregularily (every 5th
> time may be) the CPU is stuck in low states 544MHz.
I'm also still encountering this issue. Kernel:
6.16.3-200.fc42.x86_64
My hardware is:
HP Elitebook 845 G10 - 7840U
Some of the output when running "sudo dmidecode --type bios":
BIOS Information
Vendor: HP
Version: V82 Ver. 01.09.00
Release Date: 04/14/2025
BIOS Revision: 9.0
Firmware Revision: 96.55
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You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/2088733
Title:
low CPU frequency after wake up AMD Ryzen
Status in Linux:
Invalid
Status in linux package in Ubuntu:
Confirmed
Bug description:
After wake up I can see at least once a week issue with CPU frequency
not going up. When running:
$ watch lscpu -e=CPU,MHZ
standard output looks like:
CPU MHZ
0 400.0000
1 1383.2480
2 400.0000
3 400.0000
4 400.0000
5 2699.7561
6 1288.0500
7 400.0000
8 400.0000
9 400.0000
10 400.0000
11 400.0000
12 3244.0720
13 400.0000
14 400.0000
15 1295.9050
while when the issue occurs, I can't see 600 Mhz or higher values in
the same graph. Which also means that response time of computer is
much lower and everything feels lazy.
Restart fixes the issue or plug power cable off and in again.
My CPU is AMD Ryzen™ 7 PRO 7840HS w/ Radeon™ 780M Graphics × 16
My kernel version: 6.8.0-48-generic #48-Ubuntu SMP PREEMPT_DYNAMIC Fri Sep 27
14:04:52 UTC 2024
OS version: Ubuntu 24.04.1 LTS
My laptop: HP ZBook Firefly 14 inch G10 A Mobile Workstation PC
I know about one more person with same machine type with the issue and
there is also this question on askubuntu which says there is third
person with this issue.
https://askubuntu.com/questions/1531956/cpu-too-slow-after-waking-up-
in-ubuntu-24-04-1
This bug looks pretty similar however should be fixed already, so creating
new one
https://bugs.launchpad.net/ubuntu/+source/linux-hwe-5.19/+bug/2007718
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