Thanks. Works perfectly!
I take it that backlight is often better as it can be run as a user and
does not require acpi_video to be loaded. I don't see anything in acp_video
that I need if I don't need it to adjust/report brightness. I saw a note in
the comment about drm-devel-kmod about this, but
On 21. 3. 29., Kevin Oberman wrote:
> The best way to support these keys is to use devd to respond to them and
> dispatch to programs that can do what the key should do.
>
> I wanted my new laptop brightness keys to work. pressing them had no
> obvious effect. I created the following file in
