Re: [Hp5400backend-devel] Trouble with driver: Segmentation fault

[Thomas S. <tho...@co...>]

<snip>

>
> I commented out everything in hp5400.conf and I also commented out in
> /etc/modules.conf :
> alias /dev/usb/scanner0 scanner
> options scanner vendor=0x3f0 product=0x1005

removing the info from modules.conf is not taken into account before you 
reinit the modules. You may run
rmmod scanner
to unload the scanner module and have /dev/usb/scanner0 removed

>
> Scan still works after those modifications, but it's still being listed
> twice by scanimage and xsane.
>
> sane-find-scanner -q
> found USB scanner (vendor=0x03f0, product=0x1005) at /dev/usb/scanner0
> found USB scanner (vendor=0x03f0, product=0x1005) at libusb:001:002

It looks that the hp5400.conf that is used is not the one you commented out as 
sane still finds the 2 entries you mention.

>
> It seems as it's reading '/dev/usb/scanner0' and 'libusb:001:002' as two
> separate addresses.

Actually they are different because it is 2 different paths to the same 
hardware.

/dev/usb/scanner0 is managed by scanner module
libusb:001:002 is managed by libusb module


You'd better leave one of the two lines in hp5400.conf :
* if you let the scanner0, don't forget to put back the modules.conf line to 
have it connect at next boot.
* if you let the libusb you would not need (for SANE) the scanner module. But 
maybe it could be used by another software, so I recommend you to put it back 
too.

Hope it helps,

Thomas.