Ubuntu 24.04（HP Omen 搭载AMD Radeon RX 6600M 8GB显卡）系统频繁冻结及自动登出问题的解决咨询

Hey there, sorry to hear you're stuck with these annoying freezes and unexpected logouts after upgrading to Ubuntu 24.04 LTS. Let's work through some targeted fixes for your setup:

• First, dig into system logs to find the root cause
  Freezes usually leave clues in system logs. Open a terminal and run these commands to check for AMD GPU-related errors:

  • View recent system logs: journalctl -xe --since "2 hours ago"
  • Check Xorg display server logs: cat /var/log/Xorg.0.log
    Keep an eye out for keywords like amdgpu, error, or crash—these can tell you if the issue is driver-specific or something else.

• Update your system fully
  Leftover packages or outdated kernels often cause compatibility issues, especially since AMD's open-source drivers are tied to kernel updates. Run these commands to bring everything up to date:

  sudo apt update && sudo apt full-upgrade -y
  sudo apt autoremove -y
  sudo reboot
  

• Test a different kernel version
  Ubuntu 24.04 uses a newer kernel, which might have minor compatibility kinks with your RX 6600M. Reboot your system, press and hold Shift to bring up the GRUB menu, then select "Advanced options for Ubuntu". Choose an older kernel (e.g., a 6.x release that's not the latest) and see if the freezes stop. If they do, you can set that kernel as default using grub-customizer (install it with sudo apt install grub-customizer).

• Tweak AMD open-source driver parameters
  The default open-source driver might benefit from targeted flags for your RX 6000-series card:

  1. Edit the GRUB config: sudo nano /etc/default/grub
  2. Find the line starting with GRUB_CMDLINE_LINUX_DEFAULT and add these parameters inside the quotes: amdgpu.dc=1 amdgpu.si_support=0 amdgpu.cik_support=0
  3. Save the file (Ctrl+O, then Enter) and exit (Ctrl+X)
  4. Update GRUB: sudo update-grub
  5. Reboot and test stability.

• Try the proprietary AMD driver
  Even though you initially stuck with default drivers, the proprietary AMD driver might offer better stability for your specific GPU:

  1. Open "Software & Updates" from the apps menu
  2. Switch to the "Additional Drivers" tab
  3. Look for the option labeled something like "AMD Radeon RX 6600M - Proprietary AMD Graphics Driver"
  4. Select it, click "Apply Changes", then reboot your system.

• Rule out hardware issues
  Sometimes freezes aren't software-related. Let's check two key components:

  • Memory: Install memtester with sudo apt install memtester, then run sudo memtester 4096 3 (this tests 4GB of memory 3 times—adjust the number if you have more RAM)
  • Disk: Run sudo smartctl -a /dev/nvme0n1 (for NVMe drives) or sudo smartctl -a /dev/sda (for SATA drives) to check for disk health warnings or bad sectors.

Hope one of these steps gets your system running smoothly again. Feel free to share any log snippets or results if you need further help!

备注：内容来源于stack exchange，提问作者Gopinath Venkatesan