[Bug 1910927] [NEW] Suspend stopped working with kernel 5.4 (ubuntu 20.04)

Public bug reported:

Suspend was working on ubuntu 18.04 with kernel 4.15.0-128.

After upgrade to ubuntu 20.04, suspend is not working. The device is on
black screen, fully powered and not responding any longer.

I can still boot the old kernel 4.15.0-128 from ubuntu 18.04, suspend is
working with this kernel!

I tested kernel 5.4.0-60 and 5.8.0-36 from hwe. With both kernels,
suspend is broken on my older device with Core2Duo.

** Affects: linux (Ubuntu)
Importance: Undecided
Status: New


** Tags: kernel suspend

** Tags added: kernel suspend

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https://bugs.launchpad.net/bugs/1910927

Title:
Suspend stopped working with kernel 5.4 (ubuntu 20.04)

Status in linux package in Ubuntu:
New

Bug description:
Suspend was working on ubuntu 18.04 with kernel 4.15.0-128.

After upgrade to ubuntu 20.04, suspend is not working. The device is
on black screen, fully powered and not responding any longer.

I can still boot the old kernel 4.15.0-128 from ubuntu 18.04, suspend
is working with this kernel!

I tested kernel 5.4.0-60 and 5.8.0-36 from hwe. With both kernels,
suspend is broken on my older device with Core2Duo.

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