Hi,

How do I enable more than 1 usbscanner in LINUX (I run Mandrake 9)?

If I run:

[root@L750 ralf]# modprobe scanner vendor=0x0686 product=0x400d

then that specific film scanner (vendor=0x0686 product=0x400d) gets enabled and works fine. I can not get my flatbed scanner to work by running this additional command:

[root@L750 ralf]# modprobe scanner vendor=0x04a9 product=0x220e

Now, still the FIRST (film) scanner works, not the second (flatbed) after this last command. If I want to use the flatbed scanner, I have to uninstall the film scanner and then install the flatbed scanner:

[root@L750 ralf]# rmmod scanner
[root@L750 ralf]# modprobe scanner vendor=0x04a9 product=0x220e

Any clues how I can get BOTH scanners to work?

Ralf

This is a nifty one, have you tried the modprobe line withough a product argument? Since the vendors match, I thought maybe usbdev was bright enough these days to probe through to find both devices. If not, you might want to probe the module with both sets of arguments... either way, what does the "dmesg" tail look like when you perform the modprobe?

Cheers,

Finegan

You should just need to create two device nodes, /dev/usbscanner0 and /dev/usbscanner1,
and just let the scanner module take care of the rest.
PS: It helps if you have hotplug installed and working correctly.

Interesting answer!!

"You should just need to create two device nodes, /dev/usbscanner0 and /dev/usbscanner1,

code:
bash# mknod /dev/usbscanner0 c 180 48
bash# mknod /dev/usbscanner1 c 180 49


and just let the scanner module take care of the rest.
PS: It helps if you have hotplug installed and working correctly."

Are the two lines sufficient? Where do the numbers 180 48/49 come from?

Could you help me with what "hotplug" is? I can plug and unplug the usb units as I want already. Mandrake sees it directly.

Ralf

its the major/minor numbers of the first and second usb scanners

if mandrake can see the devices pluged/unpluged then hotplug is working.

Could the commands get in conflict with what the devfs does in Mandrake 9? If I understand devfs correcly (??), this is a dynamic way of generating such nodes while booting the machine. Someone told me that one should not make your own device nodes.

Is it OK to generate the devices nodes with devfs running ??

Ralf

Because I already have the device node for scanner0 (made by devfs), I only run the command:

[root@L750 ralf]# mknod /dev/usb/scanner1 c 180 49

Now I have (after a chown command):

[ralf@L750 usb]$ ll
total 0
drwxr-xr-x 1 root root 0 Jan 1 1970 hid/
crw------- 1 ralf root 180, 48 Jan 1 1970 scanner0
crw-r--r-- 1 ralf root 180, 49 Dec 4 21:43 scanner1
[ralf@L750 usb]$

Scanner0 is my flatbedscanner and works fine. Now I try to load the film scanner:

[root@L750 usb]# modprobe scanner vendor=0x0686 product=0x400d

Unfortunately, the film scanner does still not get connected to the driver; driver=(None) and does not work.........

written in /proc/bus/usb/devices:

T: Bus=03 Lev=01 Prnt=01 Port=01 Cnt=01 Dev#= 5 Spd=480 MxCh= 0
D: Ver= 2.00 Cls=ff(vend.) Sub=ff Prot=ff MxPS=64 #Cfgs= 1
P: Vendor=0686 ProdID=400d Rev= 0.01
S: Manufacturer=MINOLTA
S: Product=DiMAGE Scan Dual3
S: SerialNumber=0000000000000000
C:* #Ifs= 1 Cfg#= 1 Atr=c0 MxPwr= 2mA
I: If#= 0 Alt= 0 #EPs= 3 Cls=00(>ifc ) Sub=00 Prot=00 Driver=(none)
E: Ad=01(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E: Ad=82(I) Atr=03(Int.) MxPS= 8 Ivl=125us
E: Ad=83(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms


any hints?

Ed Hamrick informed me that this is defect in the module itself and that it should be rewritten/changed. This means that it is impossible to get it working with the ptresent module?

Ralf

If your using devfs then all bets are off.