On Tue, Sep 06, 2011 at 09:41:50PM +0200, Oliver Schinagl wrote: > This summer I've purchased a new motherboard, the Asus M5A97 running an > AMD Phenom(tm) II X6 1090T Processor. > > The moment I've received this board, I took my trusted Ubuntu 32bit > bootable USB stick (11.04) and loaded up to test if everything was > working. There appeared to be no problems so I continued for a few weeks. > > As time went on, I decided it was an idea to install a 64bit OS and > booted the system using a 64bit version of Ubuntu on a USB stick (also > 11.04). The system booted extremly slow with any USB devices connected. > > Reading up on several lists I've tried all tricks to disable USB 2 and 3 > support as that may cause issues, to no avail. So I went back to the > 32bit install and stayed there for a while. > > Back home from my vacation I installed my favorite distro, Gentoo and > used a 64bit variant. After spending some time setting up the system I > found I had the exact same USB issues. I disabled USB 2 and 3 in the > kernel and built with USB1.1 only to still see the same errors when > connecting anything over USB. Booting works fine, if nothing is > connected. I've searched far and low but have not found anything that > solved or related much to my errors, since everything appears to be > working just fine when switching back to 32bit mode. > > Thanks for your time reading this and any thoughts Idea's and pointers. This really looks like an interrupt routing issue for your hardware and a 64bit kernel. Nothing the USB developers can do about this, sorry. Try contacting the acpi developers by filing a bug at bugzilla.kernel.org and they can work on this. thanks, greg k-h -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html