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krumpf
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Joined: 15 Jul 2018
Posts: 203
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 Posted: Sat Mar 01, 2025 6:11 pm Post subject: Random freezes when using kernel 6.12 (clang?) |
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Hi,
the kernel 6.12 is causing random freezes on my desktop, only solved by hard reset.
E.g. :
- just after I entered my password in lightdm, desktop (xfce) appears and instantly freezes
- I'm just reading mail, or watching a youtube video, and everything freezes
So just random freezes, kern.log doesn't show any error messages.
Previous kernel (6.6) works flawlessly.
My main suspect is the amdgpu module, and it seems there are a lot of similar issue :
https://gitlab.freedesktop.org/drm/amd/-/issues/3787
https://gitlab.freedesktop.org/drm/amd/-/issues/4002
https://gitlab.freedesktop.org/drm/amd/-/issues/3925
https://gitlab.freedesktop.org/drm/amd/-/issues/3943
I've also seen talks about a mesa bug, or a firmware issue :s
I was wondering, is anyone facing the same kind of freezes since upgrade to kernel 6.12 ?
P.S. : I'm using a rdna3 7900xtx
Edit : I was wrong suspecting amdgpu !
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Last edited by krumpf on Mon Mar 03, 2025 7:21 pm; edited 2 times in total |
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eccerr0r
Watchman
Joined: 01 Jul 2004
Posts: 9916
Location: almost Mile High in the USA
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| Posted: Sun Mar 02, 2025 2:27 am Post subject: |
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I'm having random freezes as well with my old R7-250 and W2100 GPUs unsure relation...
Maybe related topic
Might be different, I'm using a old kernel 6.6.67 but mesa-24.3.4-r1. Which is bad because mesa should be userland and userland bugs shouldn't cause machine freezes like this... I was running dual monitor on both, unsure if that makes a difference.
I have not tested my V3900 or my intel GPU system enough to say if it's reproducible on different driver paths...
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krumpf
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Banana
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eccerr0r
Watchman
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Location: almost Mile High in the USA
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| Posted: Sun Mar 02, 2025 10:00 am Post subject: |
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really suspicious that all these cards started failing around the same time ...
not even sure if they have any similarities.
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krumpf
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| Posted: Sun Mar 02, 2025 10:15 am Post subject: |
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I'll start by quoting a mesa dev
| Quote: | | "random" issues are often power management related, for example they can happen when an overclock / undervolt is applied or when the power limit is set too high. We've also seen bugs when the kernel simply sets incorrect / unstable frequencies and voltages to the GPU. |
Now, link that to this drm/amd bug thread, and you'll understand why I believe the culprit is amdgpu module. I once read (on phoronix iirc) that amd had planned better RDNA power management for kernel 6.13, but a few people already report issues with that kernel too :-/
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keekkenen
n00b
Joined: 05 Oct 2024
Posts: 42
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| Posted: Sun Mar 02, 2025 10:53 am Post subject: Re: Random freezes when using kernel 6.12 (amdgpu?) |
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| krumpf wrote: |
I was wondering, is anyone facing the same kind of freezes since upgrade to kernel 6.12 ?
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My system works fine, and I didn't see any changes after migration from 6.6.x to 6.12.x kernel version.
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Goverp
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Joined: 07 Mar 2007
Posts: 2211
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| Posted: Sun Mar 02, 2025 12:05 pm Post subject: |
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I've two AMD systems, an old AMD A9 laptop with integrated GPU, and a less old AMD Zen3 desktop with X570 graphics card. Both using AMDGPU.
Both ran kernel 6.12.x happily, now both on 6.13.x, no problems with freezes.
FWIW mesa version 24.3.4-r1
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krumpf
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| Posted: Mon Mar 03, 2025 7:42 pm Post subject: |
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I was wrong, it seems amdgpu is not the culprit.
I've recompiled kernel 6.12 again, and so far, no freezes.
What did I change ? Well, I was wearing my lucky socks.
And I compiled using gcc instead of clang.
To sum up my experiments :
kernel 6.6 compiled with
gcc ---> works
clang ---> untested
clang+thinLTO ---> works
kernel 6.12 compiled with
gcc ---> works
clang ---> random freezes
clang+thinLTO ---> random freezes
So it seems the new suspect is clang. Or maybe one of the new clang specific options in kernel config.
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