Re: Scanner rights messed up: please help!

["Christof Hurschler" <list.hurschler@gmx.de>]

Von: Florian Kulzer <florian@molphys.leidenuniv.nl>
> On Thu, Aug 24, 2006 at 12:06:03 +0100, Wackojacko wrote:
> > Christof Hurschler wrote:
> > >>On Thursday 24 August 2006 19:10, Christof Hurschler shared this with
> us
> > >>all:
> > >>>--> No one responded to my last post, so I'll try it again.  A
> previously
> > >>>working scanner is no longer accessible for the group "scanner".  It
> > >>works
> > >>>under root.  Something seems to have changed in a recent
> dist-upgrade.
> > >>-->
> > >>>--> The device is listed as:
> > >>>-->
> > >>>--> T:  Bus=01 Lev=01 Prnt=01 Port=01 Cnt=01 Dev#=  2 Spd=12  MxCh= 0
> > >>>--> D:  Ver= 1.00 Cls=ff(vend.) Sub=ff Prot=ff MxPS=64 #Cfgs=  1
> > >>>--> P:  Vendor=04b8 ProdID=0109 Rev= 1.07
> > >>>--> S:  Manufacturer=EPSON
> > >>>--> S:  Product=Expression1640XL
> > >>>--> C:* #Ifs= 1 Cfg#= 1 Atr=40 MxPwr=  2mA
> > >>>--> I:  If#= 0 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff
> Driver=(none)
> > >>>--> E:  Ad=81(I) Atr=02(Bulk) MxPS=  64 Ivl=0ms
> > >>>--> E:  Ad=02(O) Atr=02(Bulk) MxPS=  64 Ivl=0ms
> > >>>-->
> > >>>--> but ls -la /proc/bus/usb/001
> > >>>--> total 0
> > >>>--> dr-xr-xr-x 2 root root  0 2006-08-24 11:35 .
> > >>>--> drwxr-xr-x 6 root root  0 2006-08-24 11:35 ..
> > >>>--> -rw-r--r-- 1 root root 43 2006-08-24 11:35 001
> > >>>--> -rw-r--r-- 1 root root 50 2006-08-24 09:36 002
> > >>>-->
> > >>>--> where 001:002 used to be root:scanner, allowing scanning by users
> in
> > >>>that group.  Not any more. -->
> > >>>--> I don't know where the rights for this device are beging set, can
> > >>>someone suggest a way to solve this problem?  I did find someting
> about
> > >>>setting rights in the documentation for usblib, but have never had to
> > >>>intervene in this regard before.  And am not sure if that is the
> problem
> > >>>anyway.
> 
> [...]
> 
> > I use sid and AKAICT udev deals with permissions for devices.  Try 
> > /etc/udev/permission.rules.
> 
> The udev rules for the scanners are in /etc/udev/libsane.rules which
> comes from package "libsane". It seems that the rule for product id 0109
> is missing:
> 
> ...
> # Epson Expression 1600
> SYSFS{idVendor}=="04b8", SYSFS{idProduct}=="0107", MODE="664",
> GROUP="scanner"
> # Epson Perfection 1640
> SYSFS{idVendor}=="04b8", SYSFS{idProduct}=="010a", MODE="664",
> GROUP="scanner"
> ...
> 
> (This is copied from an up-to-date Sid system, libsane 1.0.18-3)
> 
> You can try to insert the following between the 0107 and the 010a rule:
> 
> # Epson Expression 1640XL
> SYSFS{idVendor}=="04b8", SYSFS{idProduct}=="0109", MODE="664",
> GROUP="scanner"
> 
> That should set the group to "scanner" if you unplug the device and plug
> it in again. (I am not sure if you also have to restart udev.)
> 
> If this works you should mail the rule to the sane-devel mailing list;
> see the comments at the beginning of /etc/udev/libsane.rules for
> details. (I do not have this scanner therefore I cannot check this.)
> 
> -- 
> Regards,
>           Florian

Thank you very, very much.  I'll do as you suggest.

Chris

> 
> 
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