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Recently upgraded (side by side install) from 22.04 (fully working daily driver 
OS) to 24.4.1.
My normal environment is a Dell precision M6700 laptop on a docking station 
with an external USB keyboard and external DP LCD monitor. Always powered from 
AC. laptop lid is always shut.

Usual startup procedure as follows --> power on laptop via docking
station power on button, (laptop boots grub2; hidden from view since lid
is shut), eventually after 20 seconds DP monitor shows Ubuntu login
prompt. I enter name\password and after 10 seconds get Ubuntu desktop on
DP monitor. All well and good.

However with 24.4.1 everything is the same up to the Ubuntu login prompt. After 
entering name\password the laptop then suspends\hibernates (fans stop, USB 
keyboard off, DP monitor no signal).
If I then open the laptop lid slightly the laptop wakes up. Closing the laptop 
lid I get the logged in Ubuntu desktop on the DP monitor.

How can I find out what is causing the laptop to go into
suspend\hibernate following login when its lid is closed?

No LSB modules are available.
Description:    Ubuntu 24.04.2 LTS
Release:        24.04
Linux main-Precision-M6700 6.8.0-52-generic #53-Ubuntu SMP PREEMPT_DYNAMIC Sat 
Jan 11 00:06:25 UTC 2025 x86_64 x86_64 x86_64 GNU/Linux

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


** Tags: bot-comment
-- 
24.04.1 Suspends\Hibernates after desktop login using ext keyboard\monitor 
https://bugs.launchpad.net/bugs/2098370
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