[Bug 181283] [acpi_ibm] acpi_ibm module is useless on ThinkPad W530

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=181283

Greg V <greg at unrelenting.technology> changed:

           What    |Removed                     |Added
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                 CC|                            |greg at unrelenting.technology

--- Comment #3 from Greg V <greg at unrelenting.technology> ---
On my X240 with 11-CURRENT (drm-i915-update-38 actually), acpi_ibm is useless
as well.

The sound volume keys are passed to Xorg as XF86Audio{Lower,Raise}Volume, but
the brightness keys aren't. The lower brightness key just resets the brightness
to maximum, the raise brightness key does nothing. I think these keys should be
passed to Xorg as XF86MonBrightness{Down,Up}!

acpi_video brightness adjustment (sysctl hw.acpi.video.lcd0.brightness) works
though. graphics/intel-backlight works too.

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