Hello.
dmesg here: https://clbin.com/ZVk9N
I have a clean OpenBSD 7.6 install on my ThinkPad T580. 8th gen i5 CPU,
16GB RAM, NVMe drive.
I did a syspatch after installation.
When I do a fresh power-on boot I noticed my system is running extremely
slow. Literally everything is running slow, even pressing enter in the
text console. top -S is showing "acpi0" command to be utilizing 85% of
the CPU, but in terms of core usage it appears to be maxing out core
zero and not touch the three other ones. Also the laptop fan is running
at high speed and blowing hot air so the battery life is poor.
What I noticed is that if I do a reboot (so not a power on boot from
cold) then the problem does not manifest at all. Laptop fan is silent,
all cores are properly idle and the whole system is very responsive.
However, if I then close the lid of the laptop apmd puts the computer to
sleep and upon waking up the acpi0 issue manifests again so I have to
reboot again to get rid of the problem.
I tried to disabling a lot of things in BIOS but nothing helped. BIOS is
up to date, I flashed it a couple of months ago.
In dmesg I cannot see a problem, but I have attached it above as a link.
Please advise how do I proceed with troubleshooting this.
