# Re: HP 4P problems

becka@sunserver1.rz.uni-duesseldorf.de
Sat, 20 Sep 1997 04:08:29 +0200 (MET DST)

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Hi !

> Actually now that I double checked it was linked from as the ID of the scanner
> is 5 the device is /dev/sgf. But using that device gives me still the same
> error.
Stop ... Linux doesn't map ID-to-minor.

> Now I noticed running scanimage on virtual terminal that there was a message say
> ing:
> Detected scsi general sga at scsi0, channel 0, id 5, lun 0
Then sga is probably correct. Linux checks for the device-type, ans maps
e.g. harddisks on sda,sdb,..., cdrom on sr0,... etc. It look you scanner is
the only device on the bus, or none has ID<5.

> This didn't show up when I run it on xterm, and still doesn't. I wonder why it
> says sga and id5 shouldn't sga be id 0 and id5 be sgf. This seems strange to me.
No. Linux is maybe a bit strange in this respect - maybe they wanted to save
some minors ...

Moreover be careful about setting proper permissions. Use strace to check the
exact cause of the abort, if there are still problems ...

CU,Andy

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    Andreas Beck              |  Email :  <becka@sunserver1.rz.uni-duesseldorf.de>

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