Under 11.0 I got these keys working. The presentation key gave a message in /var/log/messages and with setkeycodes e008 214 I could give it a code (m:0x0 + c:119) with wich I could work further with xbindkeys.
The info-key responded after loading the module hp-wmi with the code m:0x0 + c:245.
Since I installed 11.2 this does not work anymore and the keys are no longer available. Has anyone a solution ?