On 02. 02. 2025. 08:02, Mike Larkin wrote:
> On Sat, Feb 01, 2025 at 03:47:39PM +0100, Darth wrote:
>> 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.
>>
>
> Search the lists, this has been reported and the fix described dozens of times.
>
> -ml
Thank you. Turns out the fix was to disable Thunderbolt in the
BIOS/UEFI. I have been testing it for the whole day and I can no longer
trigger the issue.
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