Arch Linux

Med

Member

Registered: 2011-08-08

Posts: 16

Freeze on boot with kernel 6.3.1

I am having a problem with kernel 6.3.1 on one of my computers. At boot the system freezes when mounting the root partition. The only option is a hard reboot. The kernel debug log does not show anything suspicious until it tries to mount the partition and freezes. The kernel works fine on other computers running Arch so I suspect it may be hardware-specific specific. The CPU is an Intel 6700K. If I downgrade to the kernel 6.2.13, everything works fine. Any idea?

jasonpeinko

Member

Registered: 2023-05-08

Posts: 2

Re: Freeze on boot with kernel 6.3.1

Thanks for making your post, I have been having the exact same issue where the TTY will freeze on mounting btrfs or at the login screen. The computer is still functional as you can ssh in via another machine. I think it may be display/gpu related because I was able to prevent the freeze by adding `nomodeset` to the boot params. Doesn't seem to be cpu specific as we are on different vendors. I can also confirm it happens on both linux-zen and regular linux kernels.

My HW:
Mobo: Asus Prime X399-A
CPU: AMD Threadripper 1950x
GPU: Radeon VII (amdgpu)

Med

Member

Registered: 2011-08-08

Posts: 16

Re: Freeze on boot with kernel 6.3.1

Thanks for your message. It seems you are right, with the nomodeset parameter things are better. I also have an AMD GPU, though an older model an RX 480. One of my computers with a Ryzen 7 5700G boots fine on the integrated GPU, so it is not a general issue with amdgpu it seems.

loqs

Member

Registered: 2014-03-06

Posts: 17,372

Re: Freeze on boot with kernel 6.3.1

Thanks for your message. It seems you are right, with the nomodeset parameter things are better.

Please consider reporting the issue on https://gitlab.freedesktop.org/drm/amd/-/issues so the issue can be fixed.

jasonpeinko

Member

Registered: 2023-05-08

Posts: 2

Re: Freeze on boot with kernel 6.3.1

Please consider reporting the issue on https://gitlab.freedesktop.org/drm/amd/-/issues so the issue can be fixed.

@Ioqs Thanks for providing the appropriate place to report this. @Med I went ahead and posted an issue https://gitlab.freedesktop.org/drm/amd/-/issues/2560

Edit: Copying my update from the issue discussion.

I can narrow the culprit down to the ultrawide monitor, Acer XR341CK. Without that monitor plugged the system operates normally. Plugging in the ultrawide display on a running system will result in the display freeze.

Even further, I can narrow it down to specifically using DisplayPort, changing the monitor to use HDMI works.

Edit 2: Issue has been further narrowed down to monitors using DisplayPort and MST (Multi-Stream Transport)

Last edited by jasonpeinko (2023-05-16 18:29:43)

jaseg

Member

Registered: 2023-05-17

Posts: 1

Re: Freeze on boot with kernel 6.3.1

I was having this issue on v6.3.2. Cherry-picking 3cf7cd3f770a from 6.4-rc1 fixes it.