*** This bug is a duplicate of bug 564917 ***
https://bugs.launchpad.net/bugs/564917
Marking as duplicate of bug #564917. There and in the other duplicates
the problem is caused by a USB-to-Parallel adapter but also Prolific
Technology PL2305 in most cases. Please try the fix proposed there by
booting from a live CD of Natty (and doing all updates after the boot).
Does this solve the problem?
Also check whether the "usblp" Kernel module is loaded on your system,
by running the command
lsmod | grep usblp
in a terminal window. Try blacklisting the module in
/etc/modprobe.d/blacklist.conf
unload the module via
rmmod usblp
then remove and recreate your print queue.
If the mdule is already blacklisted, try reactivating it by removing the
blacklist entry, then removing and recreating your print queue.
Follow also the instructions under "USB printer" on
https://wiki.ubuntu.com/DebuggingPrintingProblems.
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https://bugs.launchpad.net/bugs/700990
Title:
usb2serial cable is not detected anymore
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