[sane-devel] Plustek OpticPro 9636P+ in serial with printer - scanner not found

[Gerhard Jaeger]

On Thursday 20 July 2006 17:35, Immanuel CRC Office wrote:
> I have an HP 1200 Laser Jet printer and Plustek OpticPro 9636P+ scanner. 
> (scanner is supported by backends)
> 
> The scanner is connect first to the parallel port, and then the printer 
> is connected to the scanner.
> 
> The printer works without a hitch.
> 
> When I do scanimage -L I get:
> device `hpaio:/par/HP_LaserJet_1200?device=/dev/parport0' is a hp 
> HP_LaserJet_1200 multi-function peripheral
> 
> Is it not possible to connect two parallel devices in serial to connect 
> to the scanner?
> 
> If it is, I do not know how to proceed. I do not have pt_drv module 
> installed, but I'm not clear if I need that. I seem to have the right 
> backends, and I've removed the # from the plustek_pp in 
> /etc/sane.d/dll.conf file.
> 
> Ubuntu AMD64 6.06 (Dapper)
> Sane and XSane installed
> 
Hi,

there have always been problems in chaining HP devices. In general it is
possible, but sometimes the switching does not work.
I remember a statement from Plustek Taiwan, where they suggested to
put in a second parallelport adapter.

BTW. does the scanner work w/o the printer?

Gerhard