I got it working on my 2140. I would expect it should work the same on the 2135.

I have not yet worked out the issues with starting up with a wireless LAN (802.11b) card in the PCMCIA slot... the detection sequence hangs. But if I leave the slot empty, I boot up ok.

Haven't run it for long periods at a stretch yet, but the battery should go 3-4 hours, same as in winblows.

I'll be working with this as I get more time.

good luck!
Mike