Comment 6 for bug 920695

Based on your earlier message below (1/24/12), my understanding was
that the problem was already known:

<<
Thanks for reporting this bug here. Yes this need to be really
concerned for the Linux drivers. I been working on it for a while.
This problem happens when the printer goes into sleep state (or not in
use for long time) and the driver does not receive any message from
the printer and the USB channel gets freezed . When you launch the
toolbox it tries to query the printer to update the status and the
channel doesn't get open for communication and hence gives the
communication error.
Also this does not happen all the time when you have single print
queue opened for this device in the system-config-printer utility.

Will be working on it and make this issue get fixed.

Thanks
Goutam
>>

Yes, I used hp-setup to configure the printer. Also, as soon as I have
the communication issue again, I would send the requested log output.

with thanks & kind regards,
Georg

Quoting / Zitat von goutamkk <email address hidden>:

> The HPLIP installation looks fine from the hp-check log. Are you getting
> the same error even now when the device is configured over the network.
> Did you use "hp-setup" command to configure your printer over network ?
>
> If its getting the device communication error please provide us the "hp-
> toolbox -g" command's terminal debug messages..
>
> Thanks,
> Goutam
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/920695
>
> Title:
> HP Device Manager shows Communication Error for no reason
>
> Status in HP Linux Imaging and Printing:
> In Progress
>
> Bug description:
> HPLIP 3.11.12, Ubuntu 11.04 (up to date), HP OfficeJet Pro 8600 Plus.
>
> Every 10 days or so, I start getting "communication errors" displayed
> by the HP Device manager. Experimenting around a bit showed that if I
> delete all my printers (actually just one, but it has a printer and a
> fax in the same device), restart the computer, and add the printer
> again, the printer is recognized correctly and printing works after
> that... for a few days. But this is of course a bit annoying.
>
> Note that printing from Mac OS and Windows XP works without problems.
>
> To manage notifications about this bug go to:
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