need help disabling some devices / device scanning - lspci shuts down my lenovo E480

From	Eugen Stan <eugen@ieugen.ro>
Newsgroups	linux.debian.kernel
Subject	need help disabling some devices / device scanning - lspci shuts down my lenovo E480
Date	2022-07-05 09:20 +0200
Message-ID	<EFL0J-9fgr-7@gated-at.bofh.it> (permalink)
Organization	linux.* mail to news gateway

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Hello,

I'm writing here because I am a bit desperate and figured it's worth a 
shot.

I have a Lenovo E480 with Radeon RX550 
https://www.lenovo.com/in/en/laptops/thinkpad/thinkpad-e-series/ThinkPad-E480/p/22TP2TEE480 
.

The computer shuts down when I do lspci, hwinfo, or start lutris (for 
games) and sometimes when I log-in after resume.

Otherwise the computer works great and there are no issues.

If I disable acpi during kernel boot --acpi=off lspci works ok.
Any idea what is happening?
Any idea how I can disable ACPI scanning for the GPU / new video devices ?!

Any ideas on what to try to fix this?


More information:

* Running Debian 11.3 Linux 5.10.0-15-amd64 #1 SMP Debian 5.10.120-1 
(2022-06-09) x86_64 GNU/Linux
* I took the laptop to two repair shops. thermal paste was replaced.
* I upgraded Bios to latest version.

One thing that I did notice is that I can't see the dedicated Radeon GPU 
in lspci.

Ouptut from lspci, lsmod and dmesg:

lspci -nnk -> https://paste.debian.net/plain/1246205

lspci -> https://paste.debian.net/plain/1246206

lspci -vvv https://paste.debian.net/plain/1246207

lsmod -> https://paste.debian.net/plain/1246207

dmesg -T https://paste.debian.net/1246209/


Thanks,
Eugen

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need help disabling some devices / device scanning - lspci shuts down  my lenovo E480 Eugen Stan <eugen@ieugen.ro> - 2022-07-05 09:20 +0200

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