[sane-devel] RE: help with Canon 650U

[Gerhard Jaeger]

Well in general I'd say this is related to the locking feature,
but as you're using sane-backends-1.0.15 (did you?)
Then this feature is not available.

No more ideas on that - sorry
Gerhard

On Thursday 02 March 2006 17:25, void at chatcircuit.com wrote:
> Hi,
> 
> /dev/usbscanner might be fine, but useless here, when using the libusb,
> the backend tries to access the device via procfs.
> Is the usbfs mounted?
> Make sure to have somethink like
> usbfs           /proc/bus/usb   usbfs           noauto 0 0
> somewhere in /etc/fstab
> 
> Then you should also check the procfs entries, i.e:
> sane-find-scanner reports something like:
> found USB scanner (vendor=0x04a9 [Canon], product=0x220d [CanoScan],
> chip=LM9832/3) at libusb:003:002
> 
> Then
> cat /proc/bus/usb/devices should contain (amongst other stuff):
> T:  Bus=03 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#=  2 Spd=12  MxCh= 0
> D:  Ver= 1.10 Cls=ff(vend.) Sub=00 Prot=00 MxPS= 8 #Cfgs=  1
> P:  Vendor=04a9 ProdID=220d Rev= 1.00
> S:  Manufacturer=Canon
> S:  Product=CanoScan
> C:* #Ifs= 1 Cfg#= 1 Atr=a0 MxPwr=500mA
> I:  If#= 0 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=ff Driver=(none)
> E:  Ad=81(I) Atr=03(Int.) MxPS=   1 Ivl=16ms
> E:  Ad=82(I) Atr=02(Bulk) MxPS=  64 Ivl=0ms
> E:  Ad=03(O) Atr=02(Bulk) MxPS=  64 Ivl=0ms
> 
> Also /proc/bus/usb/003/002 should exist.
> If that is true, at least it should be possible to let scanimage -L
> work as root.
> 
> HTH
> Gerhard
> 
> usbfs is mounted, procfs is mounted. I already did "cat /proc/bus/usb/device" it
> looks just like that. a tad different, but yeah, I don't understand why it isn't
> working. I'll give you proof of this on tuesday.
> 
> Josh
> P.S. I haven't tried kicking it, perhaps I should tonight.
>