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[Solved] Bullseye and 6.1 Kernel?

Linux Kernel, Network, and Services configuration.
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dlacx
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[Solved] Bullseye and 6.1 Kernel?

#1 Post by dlacx »

Hello,
6.0 Kernel (amd64 from Bullseye backports) has entered into EOL state (by kernel.org), so no longer supported. Is it worth to give a try and install 6.1 from testing/unstable repo? I've read there are essential improvements in 6.1 (memory management etc). Is there any experience/knowledge about compatibility problems (I'm using compiled Samba ADDC)? Or should I better waiting for Bookworm release? Just a humble question to spare some time, not because I'm too lazy ;-).
Thanks in advance,
Leslie
Last edited by dlacx on 2023-03-31 18:06, edited 1 time in total.

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Re: [Software] Bullseye and 6.1 Kernel?

#2 Post by reinob »

Debian will continue supporting whatever kernel is installed in stable (bullseye).

That said, I've been running bullseye with kernel.org kernels for a few years, and never had an issue. Right now I have 6.2.7.

You just have to make sure you have a good .config.

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Re: [Software] Bullseye and 6.1 Kernel?

#3 Post by sunrat »

There's a 6.1 kernel in bullseye-backports already. It's unsigned so won't work with Secure Boot, but I'd guess a signed one would be available shortly.
https://packages.debian.org/bullseye-ba ... 4-unsigned
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Re: [Software] Bullseye and 6.1 Kernel?

#4 Post by dlacx »

Thank you.
@sunrat : OK I'll check Secure Boot then. Maybe there is no problem with it. Otherwise wait for a signed one. This is not a "clear and present danger" situation ("Debian will continue supporting..." by @reinob).
@reinob : "to make sure you have a good .config" it's on my bucketlist ;-) spending some time on "compile kernel from scratch" theme (maybe this summer?).
(Remark: this forum is amazing. God bless Debian community)

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Re: [Software] Bullseye and 6.1 Kernel?

#5 Post by sunrat »

@dlacx just out of interest, why do you want to compile a kernel? I only ever did once and decided it wasn't worth the effort. I have used Liquorix kernels for a long time as they provide a benefit for audio production, but newer kernels in Debian have dynamic preemption and are almost as good if booted with preempt=full kernel option (backports kernel default is preempt=voluntary).
See - https://www.phoronix.com/news/Linux-5.1 ... ic-Preempt
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Re: [Software] Bullseye and 6.1 Kernel?

#6 Post by dlacx »

@sunrat : "Why do you climb mountains? Because they are there" (Mallory) :-).
Mix of some "interest", "learning", "get skilled" and "amusement myself".
But this is really low priority, so I have to find some time for it first, and it's hard :-(.
OK your "I only ever did once and decided it wasn't worth the effort" make me review my plans.
Thank you again (info on preemption too).
Best regards,
Leslie

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Re: [Software] Bullseye and 6.1 Kernel?

#7 Post by Aki »

@dlacx
Hello,
Compiling Linux kernel is a broad and interesting topic. There are many good references and books about Linux kernel and how to compile it. For Debian users, an interesting reference could be "The Debian Administrator handbook" (see https://debian-handbook.info/browse/sta ... ation.html )

Please keep us updated on progress.
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Re: [Software] Bullseye and 6.1 Kernel?

#8 Post by wizard10000 »

sunrat wrote: 2023-03-19 13:06...newer kernels in Debian have dynamic preemption and are almost as good if booted with preempt=full kernel option (backports kernel default is preempt=voluntary).
I did not know this.

I had rolled back to Debian kernels on everything but home server because Bookworm freeze and the need to be able to submit bug reports without rebooting into a Debian kernel. At least for now Liquorix is a thing of the past :)
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Re: [Software] Bullseye and 6.1 Kernel?

#9 Post by dlacx »

OK. Finally linux-signed-amd64 6.1.12+1~bpo11+1 accepted into bullseye-backports.
https://tracker.debian.org/news/1428151 ... backports/

@Aki : "Please keep us updated on progress." Sure.
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Re: [Software] Bullseye and 6.1 Kernel?

#10 Post by Aki »

dlacx wrote: 2023-03-31 18:03 OK. Finally linux-signed-amd64 6.1.12+1~bpo11+1 accepted into bullseye-backports.
https://tracker.debian.org/news/1428151 ... backports/

@Aki : "Please keep us updated on progress." Sure.
Regards
Thanks for updating the thread.
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