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sumati
Apprentice
Joined: 10 Nov 2019
Posts: 184
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 Posted: Mon Aug 14, 2023 4:56 pm Post subject: kernel version |
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I want to know exactly the kernel version I use. Using the command ~$ uname -r I have the following result:
| Code: | | 6.1.31-gentoo-x86_64 |
However, the output of ~$ eselect kernel list is different:
| Quote: | Available kernel symlink targets:
[1] linux-6.4.10-gentoo *
[2] linux-6.4.10-gentoo-dist |
My question is: which one, 6.1.31 or 6.4.10 is the kernel version I use? Another question: Can I remove linux-6.4.10-gentoo-dist, since I select linux-6.4.10-gentoo? |
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logrusx
Advocate
Joined: 22 Feb 2018
Posts: 2702
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| Posted: Mon Aug 14, 2023 5:04 pm Post subject: |
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The kernel that you booted is 6.1.31-gentoo-x86_64.
The kernel sources that /usr/src/linux points to is linux-6.4.10-gentoo
What's the difference?
Sometimes packages need to be compiled against kernel sources and they look for it in /usr/src/linux. For example nvidia-drivers will look there and read the config as well. If you want to compile it against a different kernel you need to specify KERNEL_DIR at the emerge command line to explicitly instruc the ebuild for which kernel sources you want the driver to be compiled.
Best Regards,
Georgi |
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sumati
Apprentice
Joined: 10 Nov 2019
Posts: 184
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| Posted: Mon Aug 14, 2023 5:19 pm Post subject: |
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| Quote: | New postPosted: Mon Aug 14, 2023 5:04 pm Post subject: Report this post Reply with quote
The kernel that you booted is 6.1.31-gentoo-x86_64.
The kernel sources that /usr/src/linux points to is linux-6.4.10-gentoo
What's the difference?
Sometimes packages need to be compiled against kernel sources and they look for it in /usr/src/linux. For example nvidia-drivers will look there and read the config as well. If you want to compile it against a different kernel you need to specify KERNEL_DIR at the emerge command line to explicitly instruc the ebuild for which kernel sources you want the driver to be compiled.
Best Regards,
Georgi |
Many thanks for the clear explantion! I will try to upgrade to the Kernel 6.4.10 in following Gentoo wiki. |
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rfx
Tux's lil' helper
Joined: 19 Apr 2023
Posts: 149
Location: de-by
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| Posted: Mon Aug 14, 2023 5:55 pm Post subject: |
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first you should | Code: | | emerge --sync && emerge -avuND world |
to get the latest 6.1.41 
It is not a big deal if you allready have a running kernel configuration from 6.1.31
| Code: | | 1) eselect kernel list && eselect kernel set X |
Take as X the newest version, should be 6.1.41
| Code: | | 2) cp /usr/src/linux-6.1.31-gentoo/.config /usr/src/linux-6.1.41-gentoo/.config |
This uses your running Kernelconfig from 6.1.31 with all your settings you have made.
| Code: | | 3) cd /usr/src/linux && make menuconfig |
Check your stuff that your cp from 2) has worked and maybe you want to change some stuff
| Code: | | make && make modules_install && make install |
When using initramfs you need additional step:
| Code: | | dracut --kver=6.1.41-gentoo |
now check your /boot/, you should have new config, initramfs, System.map & vmlinuz. When this has worked, you can tell grub to find the new stuff
| Code: | | grub-mkconfig -o /boot/grub/grub.cfg |
This was all the magic. when your .config was right your system should work after reboot. if yes, you can cleanup old stuff:
delete old files from /boot/ .
and then also remove old kernel files from /usr/src/ & /lib/modules |
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sumati
Apprentice
Joined: 10 Nov 2019
Posts: 184
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| Posted: Tue Aug 15, 2023 7:50 am Post subject: |
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| thanks to rfx for the detailed instruction. After reading Gentoo Wiki pages I prefer now to the Distribution Kernel, it save me the time of source-compiling. Is there any simple and effective method to update the system to the linux-6.4.10-gentoo-dist which I have already installed? |
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