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I'm filling this for the benefit of those poor googlers that can reach here.
Symptoms: After trying to print a "complex" image the printer made too much breaks, and failed.
The problem is, it then didn't came up. I mean, I restarted the printer, cupsd, the whole system, and nothing.
I was unable to print again, it showed "Unable to write print data: Input/output error" and refused to print anything.
I then saw that in /etc/cups I had printers.conf and printers.conf.O files, which differed (other than in StateTime), that printers.conf.O had
State Idle
but printers.conf had:
State Stopped
StateMessage Unable to write print data: Input/output error
Reason paused
Probably due to the ErrorPolicy being stop-printer.
So seeing I followed the following steps:
Stop cups
Replace printers.conf with printers.conf.O (I could also had manually edited it)
Start cups
It then went working flawlessly.
There was probably an option in the web interface combobox for doing that. The problem is that I didn't realise it was stopped, so didn't know how to make it work. Moreover, some posts in the web recommended reinstalling the printer (which would skip the problem by creating a new printer).
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I think that I had this same problem, and fixed it by reinstalling the printer. Thank you for your post.
It's a very deadly weapon to know what you're doing
--- William Murderface
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