[Bug 1931835] Re: [20.04] Boot hangs at "loading initial ramdisk"

[Alex Murray]

Can you please try editing the grub command-line during boot and adding

dis_ucode_ldr

as an extra kernel boot parameter?


If this allows the machine to boot then it shows the issue is specific to the microcode but if not then this is likely a kernel issue - also given that we ship the same microcode in all releases I suspect that this is likely a kernel issue but it would be good to confirm this. If this does turn out to look like a kernel issue then this bug should be reassigned against the linux package.

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Title:
  [20.04] Boot hangs at "loading initial ramdisk"

Status in intel-microcode package in Ubuntu:
  New

Bug description:
  My XPS 15 9550 hang at "loading initial ramdisk" after upgrade from
  18.04 to 20.04. Tried some workarounds described
  https://bugs.launchpad.net/ubuntu/+source/intel-microcode/+bug/1853369
  but no success! (downgranding grub, and intel-microcode).

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