Comment 38 for bug 1371233

I'm using a ASUS Rampage IV Black edition with Ubuntu currently and am also experiencing this issue. I've tested several kernel versions and distros, and this is not an issue unique to Ubuntu. It will happen on pretty much any kernel =>3.15 with certain ASMedia USB 3.0 controllers. I'm not sure if it is isolated to ASMedia ICs, but it does impact at least two ASmedia products. The upstream kernel devs are aware of the issue and don't seem very optimistic about being able to fix it. Apparently there is a poor design for a PCI to USB bridge used in these controllers, and the possibility of fixing it without ASMedia or the motherboard manufacturers contributing code is fairly slim. For me, I had to disable USB 3.0 entirely to even get Linux =>3.15 to boot on this board without having a kernel panic. While I'd love to see this get fixed, I'm not sure that chasing this down is worth the Ubuntu kernel team's time.