Leap 15.2 hangs at "loading initial ramdisk"

English Install/Boot/Login
1

Hi folks,

after the latest update, I cannot boot my Lenovo ThinkPad T460s any more. With the old kernel, it worked. More precisely:
kernel-default-5.3.18-lp152.19.2.x86_64 - boots
kernel-default-5.3.18-lp152.60.1.x86_64 - hangs at ***loading initial ramdisk

***Does anybody have any idea?

Thanks

2

Hi
Don’t have “acpi=of” in the boot options? Is this an optimus/hybrid system?

3

Hi checkfrog,

Any chance you are using snapshots e.g. with BTRFS? Then you can boot from grub into the last “safe” snapshot. There you can perform as root

snapper rollback [snapshot number]

I have just got the update to 5.3.18-lp152.63.1 - maybe that works better for you?

4

There is an Update for the kernel, zypper, dracut etc., boot with the working kernel and update your system.

5

I now updated to 5.3.18-lp152.63.1 - but the problem is: the updates always make the problem appear, not disappear.

lp152.19 works, lp152.60 and lp152.63 do not work any more.

@malcolmlewis: you mean i should include or delete *acpi=off *?

How can I tell whether it is hybrid/optimus system?

6

Hi
Check the output from the following;


cat /etc/default/grub | grep GRUB_CMDLINE_LINUX_DEFAULT
/sbin/lspci -nnk | egrep -A3 "VGA|Display|3D"
7

Hi, as far as the first point is concerned


cat /etc/default/grub | grep GRUB_CMDLINE_LINUX_DEFAULT

it does not make a difference whether acpi=off is present or not.

The second point


/sbin/lspci -nnk | egrep -A3 "VGA|Display|3D"

results in


00:02.0 VGA compatible controller [0300]: Intel Corporation Skylake GT2 [HD Graphics 520] [8086:1916] (rev 07)
             Subsystem: Lenovo Device [17aa:2233]
             Kernel driver in use: i915
             Kernel modules: i915

Thanks

8

https://en.opensuse.org/SDB:Debugging_boot_hang