Comment 33 for bug 997040

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Till Kamppeter (till-kamppeter) wrote : Re: usb printer backend crashes

Next testing round: cups 1.5.3-0ubuntu2~ppa7 is uploaded to my PPA now and this respects uni-directional devices and gives some more messages in error_log.

Please repeat the tests with it (with and without blacklisting usblp) and attach syslog and error_log of the failing tests.

In addition, you can try to force uni-directional mode by

lpadmin -p <queue> -o usb-unidir-default=true

and restore to normal mode via

lpadmin -p <queue> -o usb-unidir-default=false

For <queue> the name of your print queue has to be inserted.

Please repeat your tests with forced uni-directional mode.