[cups.general] Bad device-uri scheme

[Helge Blischke]

Laszlo Papp wrote:

> Hi,
> 
> Yeah, that was the issue. It was somehow under a folder
> "backend-available" and not "backend".
> 
> Unfortuantely, the next problem seems to be more obscure about it.
> 
> lpadmin -p security -v lpd://172.21.36.88/ps -E && lpadmin -p security
> -P /etc/cups/ppd/security-default.ppd && lp -d security avatar.jpeg
> request id is security-3 (1 file(s))
> 
> Few minutes later:
> 
> lpstat -p -d
> printer security is idle.  enabled since Wed 08 Jun 2011 07:22:50 PM EEST
>        Data file sent successfully
> no system default destination
> 
> But I see nothing coming out of the printer. :( I have just attached
> the access and error logs. (Check just the last entries out). I am
> actually using VPN and Wi-Fi connection to the network printer, but it
> worked previously that way.
> 
> Best Regards,
> Laszlo Papp

>From your error_log I see that the imagetops filter exited with status 1, i. 
e. some error occurred. As the file to be printed has been identified as a 
jpeg image (by the mime routines), I see one of two possibilities for the 
failure:
(1) your CUPS has been build without libjpeg support (is libjpeg installed 
on your box?),
or
(2) the JPEG image does not match the preconditions required by the 
imagetops filter.

To test the 2nd hypothesis, please post the image for inspection.

The result of this issue is that the lpd backend feeds an empty data file to 
the printer, which results in the printer not properly responding etc.

Helge