2

I'm asking the exact opposite of what normally people as, I want to see the kernel boot log instead of hiding it, unfortunately it's not showing, I don't if it's a kernel issue or a grub issue.

I just compiled linux-5.15.0 using the default x86_64_defconfig. I updated grub to ad the entry, here is my kernel command-line,

root=/dev/sda2 rw loglevel=5

Needless to say nothing is being shown, the kernel successfully loads and starts systemd but there is no log of it showing. I induced a kernel panic by not specifying a root partition, even then no output, the system locks up in a black screen, no error message saying "kernel panic, not syncing, unable to mount....yada yada"

What am I doing wrong? How do I fix this?

PS : I booted the kernel in qemu using the same arguments, here it shows the kernel log properly. Also I have the filesystem drivers within the kernel.

1 Answer 1

3

Your kernel might not have the driver for your display.

If you have a sufficiently modern UEFI system, then you must have CONFIG_SYSFB_SIMPLEFB=y and CONFIG_FB_SIMPLE=y.

1
  • Hi, I just realized this and recompiled it, now it's working.
    – ASWIN VENU
    Dec 17, 2021 at 10:02

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.