Not sure if this will help you but it helped me with user problems seeing the scanner. Try adding the user to the "scanner" group with the command 'usermod -G scanner,<ALL other groups user belongs to> <user>. There is a man page for usermod.
>From: Karen Pease <[email protected]> >To: [email protected] >Subject: Re: [sane-devel] PIXMA MP530: Unprivileged user can't >seeiSerialNumber, thus can't get proper device name. >Date: Wed, 31 Jan 2007 18:14:07 +0000 > >Thanks for the response. As mentioned in the original post, all >of /proc/bus/usb is wide open. All of the files in that directory have the >same permissions. Specifically, the scanner (002/007) is: > >-rwxrwxrwx 1 root users 103 Jan 30 02:09 002/007 > >Also, the directories are world-accessible: > >drwxrwxrwx 2 root root 0 Jan 29 23:45 002/ > >and: > >drwxrwxrwx 4 root root 0 Jan 29 23:45 usb/ > >If it's a permissions issue, it's not one that relates to /proc/bus/usb >file >permissions, as far as I can tell. > > - Karen > >On Wednesday 31 January 2007 05:50 pm, m. allan noah wrote: > > what are the perms on the actual /proc/bus/usb/XXX/YYY file? > > > > allan > > > > On 1/30/07, Karen Pease <[email protected]> wrote: > > > Is it possible to have non-root users scan from the MP530? I've been > > > spinning my gears just to get the scanner to work at all as root, and > > > finally managed to only by installing the CVS version of the backend >and > > > fiddling around with it. However, I can't seem to get a common user >to > > > have access to the scanner. > > > > > > First, what root sees. Lets just do a test. > > > > > > [root@daughtersoftiresias sane-backends]# scanimage -L > > > [sanei_debug] Setting debug level of pixma to 10. > > > [pixma] pixma version 0.12.2 > > > device `v4l:/dev/video0' is a Noname BT848 video ( *** UNKNOWN/GENER > > > virtual device > > > device `pixma:04A91712_114A42' is a CANON Canon PIXMA MP530 > > > multi-function peripheral > > > [root@daughtersoftiresias sane-backends]# scanimage -d > > > pixma:04A91712_114A42 -n > > > [sanei_debug] Setting debug level of pixma to 10. > > > [pixma] pixma version 0.12.2 > > > [pixma] pixma_open(): Canon PIXMA MP530 > > > [pixma] pixma_close(): Canon PIXMA MP530 > > > [root@daughtersoftiresias sane-backends]# > > > > > > Success. Now, for a mere mortal (with the same SANE-related > > > debug/experimental environmental variables): > > > > > > [meme@daughtersoftiresias ~]$ scanimage -L > > > [sanei_debug] Setting debug level of pixma to 10. > > > [pixma] pixma version 0.12.2 > > > device `v4l:/dev/video0' is a Noname BT848 video ( *** UNKNOWN/GENER > > > virtual device > > > device `pixma:04A91712' is a CANON Canon PIXMA MP530 multi-function > > > peripheral [meme@daughtersoftiresias ~]$ scanimage -d pixma:04A91712 >-n > > > [sanei_debug] Setting debug level of pixma to 10. > > > [pixma] pixma version 0.12.2 > > > [pixma] pixma_open(): Canon PIXMA MP530 > > > [pixma] pixma_connect() failed EACCES > > > [pixma] pixma_open() failed EACCES > > > [pixma] pixma_close(): Canon PIXMA MP530 > > > scanimage: open of device pixma:04A91712 failed: Access to resource >has > > > been denied > > > [meme@daughtersoftiresias ~]$ scanimage -d pixma:04A91712_114A42 -n > > > [sanei_debug] Setting debug level of pixma to 10. > > > [pixma] pixma version 0.12.2 > > > scanimage: open of device pixma:04A91712_114A42 failed: Invalid >argument > > > [meme@daughtersoftiresias ~]$ > > > > > > The first thing to notice is that the regular user doesn't see the >same > > > device name as root from scanimage -L: they see a name that's missing >the > > > serial, thus an improperly formatted pixma device name, as far as I >can > > > tell. When I give that device, we get an "access denied", even though > > > I've set my /proc/bus/usb wide open. When I try the proper name that > > > root is given (but meme is not), I get an invalid argument -- the same >as > > > I'd get if I typed -d pixma:qwijibo or -d pixma:ThisIsNotAValidDevice. > > > > > > So, why does it omit the serial? Well, I think I've got that one >figured > > > out. From sane-find-scanner -v -v: First, as root: > > > > > > trying libusb: > > > > > > <device descriptor of 0x04a9/0x1712 at 002:007 (Canon MP530)> > > > bLength 18 > > > bDescriptorType 1 > > > bcdUSB 2.00 > > > bDeviceClass 0 > > > bDeviceSubClass 0 > > > bDeviceProtocol 0 > > > bMaxPacketSize0 64 > > > idVendor 0x04A9 > > > idProduct 0x1712 > > > bcdDevice 1.05 > > > iManufacturer 1 (Canon) > > > iProduct 2 (MP530) > > > iSerialNumber 3 (114A42) > > > bNumConfigurations 1 > > > <configuration 0> > > > ... > > > > > > Now, as meme: > > > > > > trying libusb: > > > > > > <device descriptor of 0x04a9/0x1712 at 002:007> > > > bLength 18 > > > bDescriptorType 1 > > > bcdUSB 2.00 > > > bDeviceClass 0 > > > bDeviceSubClass 0 > > > bDeviceProtocol 0 > > > bMaxPacketSize0 64 > > > idVendor 0x04A9 > > > idProduct 0x1712 > > > bcdDevice 1.05 > > > iManufacturer 1 ((null)) > > > iProduct 2 ((null)) > > > iSerialNumber 3 ((null)) > > > bNumConfigurations 1 > > > <configuration 0> > > > > > > Meme seems unable to get iSerialNumber -- but it can get idVendor and > > > idProduct, and thus ultimately determine what kind of scanner we're > > > dealing with. The same thing happens with lsusb -v; root can see the > > > serial number, while meme can't. > > > > > > Does this look like what's causing the problem to you? Can you think >of > > > a way to work around it? My ultimate goal is to be able to have users > > > just start up gimp and be able to scan, but as it stands, that's not >an > > > option. Which is a shame, because I specifically picked the MP530 > > > because all of its features were reported as working well in Linux. > > > > > > Thanks! > > > > > > - Karen > > > > > > > > > -- > > > sane-devel mailing list: [email protected] > > > http://lists.alioth.debian.org/mailman/listinfo/sane-devel > > > Unsubscribe: Send mail with subject "unsubscribe your_password" > > > to [email protected] > > > > -- > > "The truth is an offense, but not a sin" > > >-- >sane-devel mailing list: [email protected] >http://lists.alioth.debian.org/mailman/listinfo/sane-devel >Unsubscribe: Send mail with subject "unsubscribe your_password" > to [email protected] _________________________________________________________________ FREE online classifieds from Windows Live Expo buy and sell with people you know http://clk.atdmt.com/MSN/go/msnnkwex0010000001msn/direct/01/?href=http://expo.live.com?s_cid=Hotmail_tagline_12/06
