Arch Linux

Kenny.ch

Member

Registered: 2023-02-24

Posts: 19

[Solved] Kernel hang on shutdown (Discord) on 6.16.8-arch2

Hi,

Since updating my Arch system to the latest kernel **6.16.8-arch2**, my system hangs indefinitely during shutdown whenever Discord is running. If I close Discord before shutting down, everything works fine without any hangs.

I downgraded to **6.16.8-arch1**, and the issue no longer occurs. I initially suspected Discord itself, but downgrading to an older known-good version of Discord didn’t fix the problem.

After reviewing the [release changelog](https://github.com/archlinux/linux/releases), the only commit that looks suspicious to me as an AMD GPU user is this one:
[https://github.com/archlinux/linux/comm … dbcc2ca2f1](https://github.com/archlinux/linux/comm … dbcc2ca2f1)

I haven’t bisected or rebuilt the kernel yet, but I might try this weekend. In the meantime, I’m wondering if anyone else has encountered this issue or already found a fix.

With arch2-2 Kernel, it starts here. It takes 2min 5sec to pass

to later have issues unmounting /home and /tmp

to reach shutdown stage and hangs

On arch1-1 there are no issues like that.
/e: Fixed the image links to smaller versions — I was on mobile earlier.
Also, I’m using the official Arch repo version of the Discord client.
My AMD GPU is the integrated GPU of the Ryzen 9 7950X.

/e2: Fixed the title. I can shut down my PC without any issues on 6.16.8-arch1 - just did that in less than one minute!
On 6.16.8-arch2, I’ve had 4–5 shutdown attempts where the PC stayed powered on for several minutes (one attempt lasted atleast 30–40 minutes!) and never turned off.

Last edited by Kenny.ch (2025-09-23 03:45:13)

weirddan455

Member

Registered: 2012-04-15

Posts: 213

Re: [Solved] Kernel hang on shutdown (Discord) on 6.16.8-arch2

Probably related to this: https://bbs.archlinux.org/viewtopic.php?id=308427

I also rolled back to 6.16.8-arch1 and I'm 99% sure it's the amdgpu commit that's causing the issue. Arch maintainers should probably revert the revert to go back to mainline kernel behavior. The commit they reverted supposedly fixes a Firefox issue where it sometimes falls back to software rendering. I can't reproduce the Firefox renderer bug to confirm and full system hangs seem much worse than Firefox's renderer failing in certain conditions.

loqs

Member

Registered: 2014-03-06

Posts: 18,745

Re: [Solved] Kernel hang on shutdown (Discord) on 6.16.8-arch2

Please open an issue on Arch's gitlab instance.

Kenny.ch

Member

Registered: 2023-02-24

Posts: 19

Re: [Solved] Kernel hang on shutdown (Discord) on 6.16.8-arch2

Solved with the 6.16.8-arch3 Kernel (currently in testing)