this post was submitted on 25 Mar 2026
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linux kernel compatibility (piefed.social)
submitted 2 weeks ago* (last edited 2 weeks ago) by bad1080@piefed.social to c/linux@lemmy.ml
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i had cachyOS installed for a couple of months but was plagued with random system freezes (only hard reset possible, no leads in journalctl). i tracked it down to an issue with the combination of wayland, KDE plasma and the kernel or at least that's what i could gather from web searches. i had at least one of those freezes per week, often more.

i am now on kubuntu which basically has the same combination of things (wayland and KDE) that should cause the problem but it has been running fine for three weeks, no freezes. so something with the cachy kernel didn't agree with my system.

i was now told i could use the arch kernel on cachyOS, which was news to me. i tried switching to the cachy LTS kernel but the issue persisted. i now wonder how does the compatibility of the linux kernel work? is it compatible because it is both arch linux? or would the kubuntu kernel also work on cachyOS?

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[–] Attacker94@lemmy.world 3 points 2 weeks ago (1 children)

I don't know how old your hardware is, but iirc cachyos's kernel specifically doesn't support older hardware, so it could be that it is just too old. If I were you I would try out endeavoros if you can deal with a little more technical package management or you could use the base arch kernel on cachy. Of course your switch to kubuntu should continue to work assuming it was a kernel issue, I just don't like canonicals vision.

[–] bad1080@piefed.social 0 points 2 weeks ago (1 children)

it's an 8th gen i5 8500

[–] Attacker94@lemmy.world 2 points 2 weeks ago* (last edited 2 weeks ago) (2 children)

Some quick googling tells me that their optimized packages require 12th gen or newer, so that is likely what was messing you up. here is the link I found if you are interested, but I think your hardware is just to old.

[–] bad1080@piefed.social 2 points 2 weeks ago* (last edited 2 weeks ago) (1 children)

here it lists cpu's dating back to "Intel 4th Gen Core (Haswell)":
https://wiki.cachyos.org/installation/installation_prepare/

[–] Attacker94@lemmy.world 2 points 2 weeks ago

I can't help you there, I don't personally use cachy I am just making assumptions based upon what I have heard and how it works on other distros

[–] bad1080@piefed.social 1 points 2 weeks ago (1 children)

thanks! nobody on the cachy forums brought this up. what would this mean for a different kernel? would switching to the arch kernel fix/circumvent this?

[–] Attacker94@lemmy.world 1 points 2 weeks ago (1 children)

Packages != kernel, so probably not. I don't know how power usery you want to be, if fine with some tinkering then staying with arch makes sense and as I said in the prior post I recommend endeavoros. If you want no tinkering, kubuntu is fine I would just lookup snaps and see what you are getting yourself into, and if that turns you away I would recommend mint lmde.

[–] bad1080@piefed.social 1 points 2 weeks ago (1 children)

i tried endeavor os at some point but didn't like it (don't remember specifics). and i am not keen on kubuntu...

[–] Attacker94@lemmy.world 1 points 2 weeks ago (1 children)

If I were to take a guess, it is because it requires you to do software installation via CLI. If you are looking for a distro with a software store, I would say fedora or lmde is the move

[–] bad1080@piefed.social 1 points 1 week ago* (last edited 1 week ago)

it very well could've been, yeah. i tried fedora but due to their "absolutely no proprietary code" policy just getting vlc to play a x265 HEVC video file was a major PITA...
i also tried mint at some point but didn't like it for some reason. i feel like at this point i tried all the major distros.

i was happy on cachy os but the freezes made it non-viable. maybe i go back at some point and try with a different kernel.