[NBLUG/talk] HP 5200c scanner, Fedora Core 2, 2.6.5 kernel
mark at oswizards.com
Tue Jun 15 10:29:51 PDT 2004
On Monday 14 June 2004 18:09, Dave Sisley wrote:
> No problem, Mark. Really. A botched system is not to steep a price
> to pay for the advancement of linux. (cough!)
hehehe, cough cough cough, sure is smokey in here.
OK, so no remnants of the old way of doing things seems to be left. I have
noticed that after 2.6.3 most all USB device drivers have been removed from
the kernel. Everything is now accessed through libusb. So now we hark back
to the original post where you had permission problems with the scanner and
no I/O when run as root.
I mentioned hotplug previously as a possible problem in this saga. Here is a
a thread that may shed some light on some your problem,
Since we are trying to solve this in a public forum let's keep learning.
Let's have a little more info with a running system, scanner plugged in;
ls -la /proc/bus/usb/
and from your output;
>"found USB scanner (vendor=0x03f0, product=0x0401) at libusb:002:002"
And I think you should be able to get more info by executing
Let's see the config for HP printers for sane-backends just for giggles
Now let's run some scans as a regular user
What does scan the command 'scanimage -L' show as a regular user from a fresh
boot? Now do the same command as root, what do you see?
Now UNplug the scanner and run scanimage -L as a regular user, no reboot
required. What do you see??
There is an interesting post in the link I mentioned above that manipulates
the hotplug utility. It bears mentioning at this point.
> Additional Comment #19 From W. Michael Petullo on 2004-05-03 10:23 -------
> From bug #121893:
> Hotplug correctly sets the permissions of USB devices (ie:
> /proc/bus/usb/001/*) when I plug in my digital camera. Hotplug gives
> read and write permissions to the console owner.
> However, the same is not true for scanners. Since the USB scanner
> kernel module was dropped some time ago in favor of libusb, scanners
> should be handled like digital cameras.
> This is how I got my scanner to work right:
> I added the following two lines to /etc/hotplug/usb.usermap (copied
> from /etc/hotplug/usb.distmap -- the map for old kernel modules):
> # Umax Astra 2200
> scanner 0x0003 0x1606 0x0230 0x0000 0x0000
> 0x00 0x00 0x00 0x00 0x00
> 0x00 0x00000000
> Then I copied /etc/hotplug/usb/usbcam to /etc/hotplug/scanner and
> modified the script to reference scanners instead of cameras (actually
> a slight modification of the same script could probably be used in
> both cases).
The line for your HP scanner can be found in the usb.distmap file referenced
scanner 0x0003 0x03f0 0x0401 0x0000 0x0000 0x00
0x00 0x00 0x00 0x00000000
This may help get you working. It may not solve all over your permission
problems though. I think I have another lead on another forum that may shed
more light on this. Let's see what this does for you first.
Unplug your scanner and try the scanimage command again as described above.
Mark Street, RHCE
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