With the recent Precise kernels (at least 3.2.0-[10-12] I think), the system freezes during boot with the Ubuntu logo and colored dots on screen (the dots stop progressing), when I have wistron_btns enabled in /etc/modules. I need wistron_btns on this laptop for the wireless to work, which is why I’d like to have it enabled.

This is unrelated to Bug #926007 which I also just filed: the wistron_btns freeze happens even when I’m using fbdev. (With -intel, the #926007 panic and this freeze take turns in who gets to mess with me.)

From what I’ve gathered so far, it seems that wistron_btns works fine if I manually modprobe it from my desktop, after booting without it. So that’s a workaround at least.

I can kill the freeze with Alt+PrtSc+REISUB. I’ll provide any additional info needed, though I don’t know how to produce logs when the system is frozen.