Seems as if many devices don’t like Linux’s USB device autosuspend feature. Many will stop functioning and will need to be disconnected and reconnected to function again. I’ve got a multi-card reader that will hang and get these errors. It was a problem on my old computer and is still plaguing me on my new one. Glad to see that it’s going to be fixed. Newer kernels >= 2.6.22 have a feature that lets you turn autosuspend off without having to recompile the kernel:
sudo echo -1 > /sys/module/usbcore/parameters/autosuspend
[linux-usb-devel] usb-storage autosuspend bug?
Bug #85488 in linux-source-2.6.20 (Ubuntu): “some usb_devices fault if usb_suspend enabled”