Hello,
today i migrated also a HP Elitebook 8460P with the following result:
GFX Card (Radeon HD 6470m): No native graphic driver support, VESA mode only but with high resolutions; no dual screen support
Ethernet (1000/100/10): Working
Wifi (Intel Centrino): Working
USB Ports: Working
Audio In-/Out: Working
Internal Webcam: Working
Touchpad: Like mostly… Not working with 4.11.100, use 4.10.100 if you require the inbuild touchpad
Tested IGEL Universal Desktop OS Version: 4.11.100 and 4.10.100
Cheers
Michael
Image Source: notebookcheck.de
P.S.: Like always, no guarantee and test it by your own too!