Comment 21 for bug 483483

kernel: [ 16.301442] Info fld=0x2b6, ILI
kernel: [ 16.301443] sr 2:0:0:0: [sr0] Add. Sense: Illegal mode for this track
kernel: [ 16.336351] sr 2:0:0:0: [sr0] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
kernel: [ 16.336353] sr 2:0:0:0: [sr0] Sense Key : Illegal Request [current]

This apperead in the messages log files a few times when I inserted a USB Stick before the system freezing. As fas as I understand it, the USB Stick was identified as a CDROM by the system. So I had the stick inserted when accessing the BIOS because of this feature of the mobo (hope it is not widespread) where you can specify how the usb device should be configured. Changed the bios option from "Auto" to "Hard Disk" and rebooted with the stick still inserted. The BIOS tried to boot from the stick instead of the SATA hard drive, so I removed the stick and rebooted. Once Ubuntu was loaded I inserted the stick again and the usual messages from echi-hcd detecting a new high speed device appeared before the system freezing again.