All right, so I found a lot of previous topics regarding the IntelliMouse Explorer and its buttons ; just seems to be different for the newest version of the mouse, with the Tilt Wheel thing... I tried looking for help in other topics, and did find some, but didn't seem to be enough.
So, with the aforementioned mouse, I got the scroll wheel working and so on, but the thumb buttons don't function. I don't need the tilt wheel thingie at all, as I consider it pretty much useless.
On a note, to get the mouse working in the first place, I had to do
which wasn't necessary on an earlier model (IME 1.0 is my guess, quite old)
Also other posts had buttons 6 and 7 as the scrolling wheel, while 4 and 5 work for me (see the xmodmap command below). Here's my ~/.xsession file:
xmodmap -e "pointer = 1 2 3 4 5 6 7"
imwheel -k -b "67"
And, a part from /etc/X11/XF86Config-4:
Identifier "Configured Mouse"
Option "Protocol" "ExplorerPS/2"
Option "Device" "/dev/input/mice"
Option "Buttons" "7"
Option "ZAxisMapping" "4 5"
I get a feeling I'm including unnecessary information, but just in case, ~/.imwheelrc:
None, Up, Alt_L|Left
None, Down, Alt_L|Right
And finally, xev says keypress and keyrelease events for Alt_L and Left when I press thumb button 1, and respectively Alt_L and Right when I press thumb button 2. From what I understood, this should function properly...
Oh, and it's a USB mouse.