acpid events files for daskeyboard 4 professional. Tested on Debian 8, Debian 9 and Gentoo Linux.
Requires:
- amixer for volume control an
- acpitool for S3 sleep mode
Just copy these files to /etc/acpi/events and restart apcid.
You can use "acpi_listen" to verify your keyboard sends the correct events when you use the scrollwheel or buttons:
button/volumeup VOLUP 00000080 00000000 K
button/volumedown VOLDN 00000080 00000000 K
button/mute MUTE 00000080 00000000 K
cd/next CDNEXT 00000080 00000000 K
cd/play CDPLAY 00000080 00000000 K
cd/prev CDPREV 00000080 00000000 K
button/sleep SBTN 00000080 00000000 K