[Bug 2088733] Re: low CPU frequency after wake up AMD Ryzen

Well, I have the exact same issue but for me the issue is completely uncorrelated with being plugged in or out. That means, I have faced the issue in all the following scenarios:
(1) plugged in the all the time
(2) plugged out all the time
(3) plugged in - suspend - plugged out - wake up
(4) plugged out - suspend - plugged in - wake up

However, I think all the times the issue appeared I had closed the lid!

I have Thinkpad, amd 7940hs, ubuntu 2.04.1 6.8.0.49
BIOS is allways updated to the latest version. Must be a linux issue because never faced this problem in windows.
Linux has never been kind to any hardware which is not too old, but this is utter nonsense.

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https://bugs.launchpad.net/bugs/2088733

Title:
low CPU frequency after wake up AMD Ryzen

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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