Bug#370604: [Pkg-cups-devel] Bug#370604: Confirmation of the problem

[Kenshi Muto]

At Sat, 12 Aug 2006 23:04:55 +0200,
Patrick Aussems wrote:
> Got the same problem, with the same printer, and it worked perfectly in 
> 1.1.x.
> Maybe this problem should be sent upstream?

Yes, that's better.

Because I haven't a printer behaves such sleep action, it's hard to
reproduce the problem.
In my code investigation, the problem occured at open_device() of
backend/usb-unix.c.
open_device returns fatal error when:
- user used obsolete usb:/dev/ style. usb URI should be
  usb://Vendor/Hardware style.
- accessing to /dev/usb/lp0 was failed by something error except
  of EBUSY.

So,
- Please make sure your /etc/cups/printers.conf uses usb://Vendor/Model
  style.
- Is there /dev/usb/lp0 in your environment? If there is, what's happen
  when you execute "cat < /dev/usb/lp0" during a printer is sleeping.
- Is there any wakeup/sleep or connect/disconnect message about a printer
  in your /var/log/syslog?
- When you run "/usr/lib/cups/backend/usb" with root privilege, what
  message do you see (during sleep, and during wakeup)?

Thanks,
-- 
Kenshi Muto
kmuto at debian.org