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March 7th, 2025 14:53
Power delivery errors on Linux after BIOS update
After updating to BIOS version 1.29.0 from 1.27.1 I see the following errors on Linux in dmesg every time the charger is connected to any of the USB ports:
[ 1049.293343] ucsi_acpi USBC000:00: unknown error 0[ 1049.293352] ucsi_acpi USBC000:00: UCSI_GET_PDOS failed (-5)
This is observable on Arch Linux running kernel 6.12.17.
The laptop seems to work and charge fine.
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twdev
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March 7th, 2025 14:55
Observable on two machines: XPS 9520 one with i5 12500h and second with i7 12700h.