Something is going wrong when I connect my phone to the USB socket. No matter what the phone is doing (nothing, fastboot-via-volume-button, or 'normal' boot to the Cyanogen boot loop), I get output like this in dmesg:
[ 1239.544037] usb 2-2: new high speed USB device using ehci_hcd and address 13
[ 1254.656038] usb 2-2: device descriptor read/64, error -110
[ 1269.872034] usb 2-2: device descriptor read/64, error -110
EDIT: trimmed this output, you get the idea...
and neither adb nor fastboot show the device in the list. Any ideas?
EDIT: I solved it. Leaving this here in case anybody has the same problem. The solution that worked for me was to remove my PC's power cable then reconnect, as discussed here: http://ubuntuforums.org/showthread.php?s=a7f4128a79c3f7c18067f16e66f176df&p=10054218#post10054218
Mods, please feel free to delete this post if you think it's too off-topic.