From a bit of Googling it looks like there is no support for that chipset and some of the hits say there never will be. The same chipset is in the Thinkpad T42's. I did not see any modules in the 18.104.22.168 kernel.
Distribution: RHEL 5.1 with Pieces of this and that.
Kernel 22.214.171.124, KDE 3.5.8 and KDE 4.0 beta, Plus Development src.rpm, ATI fglrx64_7_1_0-8.433-1 rpm with 3D and DRI working.
Acer 5100-5840 with webcam, ati, sdcard reader, sound, atheros based wireless, all working. Only thing not working is the memory stick reader.