Bug 255194 - acpi_ibm on Thinkpad T495: driver bug: Unable to set
Summary: acpi_ibm on Thinkpad T495: driver bug: Unable to set
Status: New
Alias: None
Product: Base System
Classification: Unclassified
Component: kern (show other bugs)
Version: Unspecified
Hardware: amd64 Any
: --- Affects Only Me
Assignee: freebsd-acpi (Nobody)
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2021-04-18 18:46 UTC by lumiwa
Modified: 2021-10-21 17:43 UTC (History)
3 users (show)

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Description lumiwa 2021-04-18 18:46:24 UTC 
Hi!

kldload acpi_ibm give me a message:
driver bug: Unable to set devclass (class: ppc devname:(unknown))

Also during boot I got;
acpi_ec0: no response to 0x 84
acpi_ec0: GPE query filed: AE-NO-HARDWARE RESPONSE

Thank you.

I have FreeBSD 13.0-RELEASE installed on Thinkpad T495.
Comment 1 Ali Abdallah 2021-10-21 17:43:18 UTC 
I have the same Thinkpad mode, acpi_ibm inserts fine for me.

For what concerns the following acpi_ec0 no hardware response errors, you can enable burst mode to get rid of the problem (debug.acpi.ec.burst=1)