[arch-general] Brightness keys not working on laptop

[YCH]

I have similar problem. But no solution still.

See this,

https://bbs.archlinux.org/viewtopic.php?id=253919

2020년 3월 5일 (목) 오전 8:08, David Rosenstrauch <darose at darose.net>님이 작성:
>
> On 2020-03-04 5:39 pm, David Rosenstrauch wrote:
> > I'm fairly certain these hotkeys are controlled by the kernel hp_wmi
> > module, and I do see some error message lines in dmesg about that:
> >
> > [    5.683232] hp_wmi: query 0x4 returned error 0x5
> > [    5.697112] hp_wmi: query 0x4 returned error 0x5
> > [    5.704773] hp_wmi: query 0xd returned error 0x5
> > [    5.730490] hp_wmi: query 0x1b returned error 0x5
>
> Forgot to mention:  I see these WMI messages as well:
>
> [    4.600697] acpi PNP0C14:01: duplicate WMI GUID
> 05901221-D566-11D1-B2F0-00A0C9062910 (first instance was on PNP0C14:00)
> [    4.600778] acpi PNP0C14:02: duplicate WMI GUID
> 05901221-D566-11D1-B2F0-00A0C9062910 (first instance was on PNP0C14:00)
> [    4.600838] acpi PNP0C14:03: duplicate WMI GUID
> 05901221-D566-11D1-B2F0-00A0C9062910 (first instance was on PNP0C14:00)
> [    4.600906] acpi PNP0C14:04: duplicate WMI GUID
> 05901221-D566-11D1-B2F0-00A0C9062910 (first instance was on PNP0C14:00)
>
> Not sure if they're relevant.
>
> Thanks,
>
> DR