Ryzen 3550h lowers its frequency to 400MHz

Bug #1830522 reported by Shiko on 2019-05-26
This bug affects 1 person
Affects Status Importance Assigned to Milestone
linux (Ubuntu)

Bug Description

I've bougt new notebook with ryzen 3550h onboard (Asus fx705dy) and noticed one thing: whenever the cpu is fully loaded and the gpu is being used the cpu sets its freqeuncy to 400MHz and system works slow untill reboot.

For example:I installed Android Studio. When I open large project in it and open youtube video in browser or start emulator system works on max frequency for couple of seconds and then lowers cpu frequency to 400MHz. If I just compile the project it'll work nice until using gpu.

Another example is I can compile Unreal Engine within 1.5 hours without such problems if I just let notebook do it without browsing internet.

I've tried a lot of things like settings cpufreq mode to performance (sudo cpufreq-set -r -g performance), disabling c6 state etc.

The only workaround I found for now is disabling boost for cpu by executing
echo 0 > /sys/devices/system/cpu/cpufreq/boost

Any idea how to work on this system without disabling cpu boost?
ProblemType: Bug
ApportVersion: 2.20.10-0ubuntu27
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
DistroRelease: Ubuntu 19.04
InstallationDate: Installed on 2019-05-09 (18 days ago)
InstallationMedia: Ubuntu 19.04 "Disco Dingo" - Release amd64 (20190416)
Package: linux (not installed)
Tags: disco
Uname: Linux 5.1.5-050105-generic x86_64
UnreportableReason: The running kernel is not an Ubuntu kernel
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
_MarkForUpload: True

This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:

apport-collect 1830522

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

Changed in linux (Ubuntu):
status: New → Incomplete

apport information

tags: added: apport-collected disco
description: updated

apport information

Chris (angryfirelord) wrote :

Hi Shiko,

You might want to hold on until kernel 5.3 is released. This apparently includes more official support for Asus TUF laptops, although I don't if it'll correct this specific problem.


Launchpad Janitor (janitor) wrote :

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]

Changed in linux (Ubuntu):
status: Incomplete → Expired
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