Laptop occasionally freeze when the OS is turns off or suspend


I use Manjaro on the laptop for a while. When I shut down or suspend the system from the KDE power menu, occasionally the system freeze, the black screen shows, cooling fans speed up, LEDs on the Caps and Fn keys glow.

Operating System: Manjaro Linux
KDE Plasma Version: 5.19.5
KDE Frameworks Version: 5.74.0
Qt Version: 5.15.1
Kernel Version: 5.8.11-1-MANJARO
OS Type: 64-bit
Processors: 8 × AMD Ryzen 5 3550H with Radeon Vega Mobile Gfx
Memory: 14,6 GiB of RAM
Graphics Processor: AMD RAVEN
Laptop model: Honor MagicBook Pro 16.1 2019

How can I diagnose the situation? What logs can help?

Added some logs:
journalctl -b -0 -p err…alert

:+1: Welcome to Manjaro! :+1:

From the information you have provided you seem to have 2 issues:

  1. kmixctrl (apparently a mixer program) has a bug and crashes when your computer goes to sleep
  2. You’re running MySQL on your machine: that’s server software and normally runs on servers that never sleep.


  1. File a bug
  2. Turn off all sleep/hibernate functionality or uninstall MySQL if you don’t need it.