Bugzilla – Bug 1080177
Kernel 4.15.* doesn't bot any more on a Lenovo L450 i5-5200U
Last modified: 2018-06-16 12:25:40 UTC
The Lenovo L450 doesn't boot any more with kernel 4.15.* .
The system switches the monitor off and doesn't ask the encryption password.
could you remove splash=silent and quiet kernel boot options in grub and see if you can see the reason?
Created attachment 760276 [details]
Lenovo L450 i5-5200U boot kernel vmlinuz-4.15.2-1-default
After "fb: switching to inteldrmfb from EFI VGA" the monitor turns black and switches off.
Try to boot with "nomodeset" option in addition to the removal of "splash=silent" and "quiet". This will disable the i915 graphics driver, so it may reach to a further point.
Created attachment 760371 [details]
journalctl --boot=-1 (failed session with nomodeset)
I can now enter the unlock password, the system continues booting boot still suspends.
I've attached the "journalctl --boot=-1" (is the failed boot) messages.
So far, so good.
Could you remote-login at this state? If yes, login, and run
echo 0x0e > /sys/module/drm/parameters/debug
modprobe -r i915
modprobe i915 modeset=1
as root. This will re-load the i915 driver, and you'll likely have a non-working display.
Then check the kernel log via remote login.
Closing due to lack of response.