Arch Linux

matesz

Member

Registered: 2024-10-25

Posts: 12

Missing step - running custom kernel

Hi
According to this documentation i have to run linux-mainline-um5606 AUR package

I managed to compile and install kernel with:

makepkg -s MAKEFLAGS="-j$(nproc)"
sudo pacman -U linux-mainline-um5606-1:6.13rc3-1-x86_64.pkg.tar.zst
sudo pacman -U linux-mainline-um5606-headers-1:6.13rc3-1-x86_64.pkg.tar.zst 

But now my .img is just chilling in /boot:

ls /boot -la

drwxr-xr-x 4 root root      4096 1970-01-01  .
drwxr-xr-x 1 root root       142 12-19 18:56 ..
-rwxr-xr-x 1 root root    153600 12-10 20:35 amd-ucode.img
drwxr-xr-x 5 root root      4096 12-19 18:57 EFI
-rwxr-xr-x 1 root root 136401558 12-20 15:21 initramfs-linux-mainline-um5606-fallback.img
-rwxr-xr-x 1 root root  49066032 12-20 15:21 initramfs-linux-mainline-um5606.img
drwxr-xr-x 4 root root      4096 12-20 15:26 loader
-rwxr-xr-x 1 root root  13738496 12-19 18:56 vmlinuz-linux
-rwxr-xr-x 1 root root  13771264 12-20 15:21 vmlinuz-linux-mainline-um5606

and my current kernel is still old one:
uname -r

6.12.4-arch1-1

I have direct EFI loading (no grub). My EFI configurator sees only .efi files that doesn't exist for my custom kernel..

Could you please help mi what step i'm missing? I feel like i'm 95% done and it's just a matter of switching something, but i can't find anything useful on the internet.

Scimmia

Fellow

Registered: 2012-09-01

Posts: 13,680

Re: Missing step - running custom kernel

https://wiki.archlinux.org/title/EFI_boot_stub

matesz

Member

Registered: 2024-10-25

Posts: 12

Re: Missing step - running custom kernel

I've seen this, but it's really black magic for me

efibootmgr --create \
 --disk /dev/nvme0n1 --part 1 \
 --label "EFISTUB Arch" \
 --loader /vmlinuz-linux-lts \
 --unicode 'root=UUID=01a40dd8-28f0-4636-be1e-aeed60c98095 resume=UUID=2d877d5d-4ca1-4d46-a3d6-b6ee94cbbd78 rw rootflags=subvol=@ loglevel=3 quiet initrd=\initramfs-linux-lts.img'

in this example:
--part 1 is nvme0n1p1 or nvme0n1p2?
--loader should be just /vmlinuz, /BOOT/vmlinuz, /EFI/BOOT/vmlinuz, \EFI\BOOT vmlinuz or which one?
--unicode
- is root uuid uuid of disk or disk type?
- what is resume?
-initdir - the same as --loader?

Sorry for stupid questions. I'm not doing this because i am bored, i'm doing this in order to have sound in my laptop

Scimmia

Fellow

Registered: 2012-09-01

Posts: 13,680

Re: Missing step - running custom kernel

How did you do it the first time? For the kernel you've been running?

loqs

Member

Registered: 2014-03-06

Posts: 18,853

Re: Missing step - running custom kernel

--disk /dev/nvme0n1 --part 1 is nvme0n1p1
--loader /vmlinuz-linux-lts is the kernel binary for linux-lts assuming /boot is the ESP https://wiki.archlinux.org/title/Persis … ng#by-uuid
'root=UUID=01a40dd8-28f0-4636-be1e-aeed60c98095 initrd=\initramfs-linux-lts.img' mount the filesystem with the UUID 01a40dd8-28f0-4636-be1e-aeed60c98095 as root use initramfs-linux-lts.img as the initial ramdisk.
Edit:
Also you have confirmed the audio issue is still present with linux 6.12?  The advice you reference predates the 6.12 release.

Last edited by loqs (2024-12-20 15:58:08)

matesz

Member

Registered: 2024-10-25

Posts: 12

Re: Missing step - running custom kernel

How did you do it the first time? For the kernel you've been running?

archinstall

Also you have confirmed the audio issue is still present with linux 6.12?  The advice you reference predates the 6.12 release.

Earlier you could make it with some hacks/manual configuration in pulse audio, now i wanted to make it clean.

After finding (i belive) correct uuid i have issue that
/sbin/init
does not exist.

I'll be back when this is merged to main kernel and working (probably early 2026), for now it's back to windown.
I only have 10 years experience as software dev, i'm too dumb for this sh*t.

Thanks for all the help but i got flashbacks of all of the previous attempts - although it's nice to not have to read nouveau for once.

edit: if anyone has similar issue, this is what i managed to get to:

sudo efibootmgr --create  --disk /dev/nvme0n1 --part 1  --label "Arch8"  --loader /vmlinuz-linux-mainline-um5606 --unicode 'root=UUID=ff4b2e60-d6a0-4aba-bc39-89f2a8d765df rw initrd=\initramfs-linux-mainline-um5606.img'

where uuid is p2 from command posted by loqs

Last edited by matesz (2024-12-20 17:09:21)

loqs

Member

Registered: 2014-03-06

Posts: 18,853

Re: Missing step - running custom kernel

I'll be back when this is merged to main kernel and working (probably early 2026), for now it's back to windown.

https://aur.archlinux.org/packages/linu … ine-um5606 is as of writing mainline 6.13-rc3 plus a patch for AMD NPU (Neural Processing Unit).  Unless the lack of NPU patch is causing your system's audio issue then you will only have to wait a few weeks for the 6.13 release rather than a year. If there are required kernel config changes then someone would need to make a request for those against the linux package after the 6.13 release.