I tried the USB stuff with 2.3.99pre-something kernel, and it worked fine. However the kernel crashed when I copied the linux source tree to keep a fresh copy before applying the ac-patch.
I then decided to go back to stable kernel, but I needed the USB for my mouse and Wacom. (no. it doesnt work in Gimp yet. You can use the tablet as a generic mouse without pressure etc. A serial version works fine. Xinput support for the usb version is on the works though..) Well the non-fun part is the backport USB driver for 2.2.x doesnt like my tablet at all. The backport driver is 0.2 I think and 2.3.99 kernel has version 0.5. The USB trackball works fine but the wacom just goes into a weird state, unplugging the tablet fixes it. It spews this to kern.log:
Apr 12 21:03:39 fun112 kernel: usb-uhci.c: interrupt, status 3, frame# 1114 Apr 12 21:03:39 fun112 kernel: usb-uhci-debug.h: uhci_show_td d49a1de0 (149A1DE0) Apr 12 21:03:39 fun112 kernel: usb-uhci-debug.h: MaxLen=07 DT0 EndPt=1 Dev=3, PID=69( IN ) (buf=0a0ae400) Apr 12 21:03:39 fun112 kernel: usb-uhci-debug.h: Len=07 e3 SPD IOC Stalled Babble
I wonder what it is. On the other hand, it is pointless to wonder, the current driver works fine. I just wish the backport was updated at some point. Or I just need to play with the devel kernel again.. Gotta take backups :)
Anyway, sleep time. Good night and happy hacking people!