Hi Antonio,
AR> ls -l /etc/hotplug.d/usb
AR> -rwxr-xr-x 1 root root 535 2005-04-20 10:28 libsane.hotplug
That's the same as mine..
AR> and
AR> ls -lR /proc/bus/usb/
AR> /proc/bus/usb/002:
AR> total 0
AR> -rw-r--r-- 1 root root 43 2005-08-13 07:27 001
AR> -rw-r--r-- 1 root root 57 2005-08-13 07:27 002
AR> -rw-r--r-- 1 root root 50 2005-08-13 07:27 003 <=
AR> My /proc/bus/usb/devices file shows the following (interesting that it
AR> is length 0, seems to be generated on the spot upon cat request):
It's not really a file "as we know it Jim", but a symbolic one, created by
the kernel. It looks like a file, though..
AR> T: Bus=02 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 2 Spd=12 MxCh= 0
AR> D: Ver= 1.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1
AR> P: Vendor=03f0 ProdID=0401 Rev= 1.00
AR> S: Manufacturer=Hewlett-Packard
AR> S: Product=HP ScanJet 5200C
AR> S: SerialNumber=SG02CPEgina
AR> C:* #Ifs= 1 Cfg#= 1 Atr=60 MxPwr= 0mA
AR> I: If#= 0 Alt= 0 #EPs= 3 Cls=00(>ifc ) Sub=00 Prot=00 Driver=(none)
AR> E: Ad=81(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms
AR> E: Ad=02(O) Atr=02(Bulk) MxPS= 16 Ivl=0ms
AR> E: Ad=83(I) Atr=03(Int.) MxPS= 1 Ivl=250ms
That't it alright :) It looks like it should be accessible through
"/proc/bus/usb/002/003".
What counts here are "Vendor=03f0 ProdID=0401", with which the hotplug system
should try to find the right info. However, is the hotplug system active on
your system?
Assuming there is, do the following: check if the file following file exists:
"/etc/sane.d/hotplug/libsane.db".
If it does, it should contain the line "0x03f0 0x0401 root:scanner 0660"
(the fields are tab-separated).
If it doesn't, add it and try reconnecting your scanner.
Note the field "root:scanner", that's the field describing the ownership of
the device. "0660" defines the access on it.
=> the file "/etc/sane.d/hotplug/libsane.db" comes with the "libsane" package.
If that doesn't help, we'll have to check if hotplug support is set up
properly:
1. check if "/proc/sys/kernel/hotplug" exists. Two options:
a) it exists: continue;
b) it doesn't: your kernel doesn't suport hotplugging. Do you use
the stock 2.4/2.6 kernel?
2. check if ".../hotplug" contains "/sbin/hotplug":
a) it does: continue;
b) it does't: "echo "/sbin/hotplug > /proc/sys/kernel/hotplug";
3. Check if the file "/etc/hotplug/usb.rc" exists:
a) it does: continue;
b) it doesn't: euh, I don't know. Did you install all the relevant
packages?
4. Check the file "/etc/default/hotplug". There should *NOT* be a line
saying: "HOTPLUG_RC_usb=no":
a) If there is: comment it out (place a "#" in front of the line) and
execute the commands "/etc/init.d/hotplug stop" and
"/usr/init.d/hotplug start". This should do it?
b) continue :)
Hmm. Normally, the file "/etc/hotplug/usb.rc" will be called to perform
some actions to get your devices configured as desired. You can find out
more doing the next:
5. edit the file "/sbin/hotplug" and add, on the second line:
"export DEBUG=1". Dis- and reconnect your scanner;
6) examine "/var/log/messages". It *should* say something :-)) Send in the
relevant output (lines are marked with "default.hotplug")..
Regards,
Bob
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