Kernel parameters

Bici

Hi All,

Where can I find the kernel parameters?
I would like to remove some parameters from it permanently, and I wasn't able to find it so far.

Does the kernel parameters affecting shutdown process also?
I need to see what is happening when I shut down the computer, because it never manages to shut down.
Only the blinking line at the top left corner - forever.

Thanks in advance for the help!

PS: sorry if my English is not perfect. 🙂

Justin

Do you mean the kernel config? If so it is here https://dev.getsol.us/source/linux-current/browse/master/files/config

To disable them you'd need to recompile the kernel.

Bici

Justin

I mean the boot parameters in the kernel line.
quiet, splash, loglevel, etc.

I can modify them manually in boot time, but I would like to do it permanently.

[deleted]

Bici maybe this? https://getsol.us/articles/troubleshooting/boot-management/en/#appending-kernel-parameters-to-solus-boot

Bici

[deleted]

Thanks for the answer.

According to the --help command clr-boot manager does not support kernel parameter changes other than timeout changes and kernel version changes.

$ clr-boot-manager --help
Usage: clr-boot-manager

version - Print the version and quit
report-booted - Report the current kernel as successfully booted
help - Show help message
update - Perform post-update configuration of the system
set-timeout - Set the timeout to be used by the bootloader
get-timeout - Get the timeout to be used by the bootloader
set-kernel - Configure kernel to be used at next boot
list-kernels - Display currently selectable kernels to boot

/etc/kernel/cmdline file and /etc/kernel folder did not exist on my system (Outdated docs?), but I have created them anyway, and wrote loglevel=5 into it. Then did the sudo clr-boot-manager update command than reboot.
Nothing has changed.

There must be some file that stores the kernel parameters.

[deleted]

Bici

[deleted]

This is about Solus 3 and GRUB.
Solus 4 uses clr-boot-manager instead of GRUB.

However I found this news: https://getsol.us/2017/03/26/clr-boot-manager-now-available-in-solus/
According to it, there is a way to add extra parameters by adding a .conf file in the /etc/kernel/cmdline/ folder.
This DID work for me, and the loglevel is now 5 instead of default 3.

But, I still don't have any idea how to remove parameters. It is a bit strange that there must be two loglevel parameters. And I need to remember the parameters (or take a photo of them) to be able to overwrite them.

[deleted]

Bici if you want to see the boot/shutdown messages then follow jennydamans post in the reddit post i linked to directly, and they are permanent - i followed that advice and works fine for me using Solus 4 (uefi).

These are my kernel params

$ cat /etc/kernel/cmdline
bluetooth.disable_ertm=1
ignore_loglevel systemd.show_status=true splash=silent

gohlip

If your system is bios-legacy, you can modify it at /etc/default/grub like any other grub 2 linux OS. Then 'update-grub'.
If uefi, install efibootmgr, dosfstools packages, then do 'bootctl install' then create loader.conf and entries. At solus entry make changes in options line.

Bici

gohlip

I have UEFI and clr-boot-manager.
I have installed the packages, and currenty investigating how to configure it.
Thanks for the help! 🙂

[deleted]

Thanks, I have already managed to get the messages by adding loglevel=6 to boot parameters.
Currently I would like to remove some parameters: loglevel=3, amdgpu.si_support=1 amdgpu.cik_support=1, etc.
But with efibootmgr I hope I can do it.

gohlip

Bici I have UEFI and clr-boot-manager.
I have installed the packages, and currenty investigating how to configure it.

Have you done ?
# bootctl install

Then confirm you have directories
/boot/loader/entries
and a file
/boot/loader/loader.conf
Create these if you do not have them.

Then we need more information from you.
First your kernels
ls /boot
ls /boot/efi
ls /boot/efi/com.solus-project
Then check if you have systemd-boot efibootentry with
efibootmgr -v

After getting these, we can write out /boot/loader/loader.conf and /boot/loader/entries/solus.conf
Put these there and we're all set.

[EDIT] - BTW, what's your?
cat /proc/cmdline

kyrios

Perhaps reading the doc could help? 🙂

https://getsol.us/articles/troubleshooting/boot-management/en/#appending-kernel-parameters-to-solus-boot

But I am not sure you can remove (Solus default) kernel parameters, only add and probably override.