On Thu, Sep 29, 2011 at 04:20:01PM -0400, Thomas H. George wrote:
> I can run xsane as root but not as user tom although tom is a member of
> the scanner group. What other group membership is required?
>
As suggested by responders I have confirmed that I have always been a
member of the scanner group and I have modified
/lib/udev/rules.d/60-libsane.rules. This had no effect.

To pinpoint the problem I ran strace -f -e trace=open,read xsane
2>/tmp/output. Here is the tail of /tmp/output


[pid 3335] open("/usr/share/locale/en_US.utf8/LC_MESSAGES/sane-backends.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
[pid 3335] open("/usr/share/locale/en_US/LC_MESSAGES/sane-backends.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
[pid 3335] open("/usr/share/locale/en.UTF-8/LC_MESSAGES/sane-backends.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
[pid 3335] open("/usr/share/locale/en.utf8/LC_MESSAGES/sane-backends.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
[pid 3335] open("/usr/share/locale/en/LC_MESSAGES/sane-backends.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
[pid 3335] open("/usr/share/fonts/truetype/ttf-bitstream-vera/VeraMono.ttf", O_RDONLY) = 12
[pid 3335] close(12) = 0
[pid 3335] read(7, 0x200f0c4, 4096) = -1 EAGAIN (Resource temporarily unavailable)
[pid 3335] --- SIGSEGV (Segmentation fault) @ 0 (0) ---
[pid 3336] +++ killed by SIGSEGV +++

Checking back in /tmp/output the last file 7 opened was /etc/passwd.
The passwd file was read successfully several times with a different
specification (user tom presumably). This last read must be for root
permission as xsane will run with no segmentation fault if run by user
root.

Incidently, I found sane-backends.mo is only in /usr/share/locale/en_GB.

Any suggestions of how better to pinpoint the cause of the problem?

> Tom
>
>
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On 02/10/11 03:25, Thomas H. George wrote:
> On Thu, Sep 29, 2011 at 04:20:01PM -0400, Thomas H. George wrote:
>> I can run xsane as root but not as user tom although tom is a member of
>> the scanner group. What other group membership is required?
>>
> As suggested by responders I have confirmed that I have always been a
> member of the scanner group and I have modified
> /lib/udev/rules.d/60-libsane.rules. This had no effect.
>
> To pinpoint the problem I ran strace -f -e trace=open,read xsane
> 2>/tmp/output. Here is the tail of /tmp/output
>
>
<snipped>
>
> Any suggestions of how better to pinpoint the cause of the problem?
>
>> Tom
>>
>>

Tell us your scanner model? :-)

Some scanners require membership of the lp group (eg. some HPs)

Cheers


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On Sun, Oct 02, 2011 at 02:49:04PM +1100, Scott Ferguson wrote:
> On 02/10/11 03:25, Thomas H. George wrote:
> > On Thu, Sep 29, 2011 at 04:20:01PM -0400, Thomas H. George wrote:
> >> I can run xsane as root but not as user tom although tom is a member of
> >> the scanner group. What other group membership is required?
> >>
> > As suggested by responders I have confirmed that I have always been a
> > member of the scanner group and I have modified
> > /lib/udev/rules.d/60-libsane.rules. This had no effect.
> >
> > To pinpoint the problem I ran strace -f -e trace=open,read xsane
> > 2>/tmp/output. Here is the tail of /tmp/output
> >
> >
> <snipped>
> >
> > Any suggestions of how better to pinpoint the cause of the problem?
> >
> >> Tom
> >>
> >>
>
> Tell us your scanner model? :-)
>
Epson Perfection 2400 Photo

> Some scanners require membership of the lp group (eg. some HPs)
>
> Cheers
>
>
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On 02/10/11 23:30, Thomas H. George wrote:
> On Sun, Oct 02, 2011 at 02:49:04PM +1100, Scott Ferguson wrote:
>> On 02/10/11 03:25, Thomas H. George wrote:
>>> On Thu, Sep 29, 2011 at 04:20:01PM -0400, Thomas H. George wrote:
>>>> I can run xsane as root but not as user tom although tom is a member of
>>>> the scanner group. What other group membership is required?
>>>>
>>> As suggested by responders I have confirmed that I have always been a
>>> member of the scanner group and I have modified
>>> /lib/udev/rules.d/60-libsane.rules. This had no effect.

Nothing 'should' need modifying there. Suggest you revert to the original.

>>>
>>> To pinpoint the problem I ran strace -f -e trace=open,read xsane
>>> 2>/tmp/output. Here is the tail of /tmp/output
>>>
>>>
>> <snipped>
>>>
>>> Any suggestions of how better to pinpoint the cause of the problem?
>>>
>>>> Tom
>>>>
>>>>
>>
>> Tell us your scanner model? :-)
>>
> Epson Perfection 2400 Photo

Thanks.
Your model is listed as supported by sane without mention of issues.
Search results show few complaints...

Three support choices:-
; run with sane - what's your DE, do you have libsane-extras installed?
does lsusb detect it (or are you using the SCSII connector)?
(0x04b8:0x011b)
what front-end are you trying to use?

; use the (closed source) Epson recommended drivers for that device
(ImageScan) this should include the Kowa front-end for negative scanning:-
http://www.avasys.jp/lx-bin2/linux_e/scan/DL1.do

; use commercial product VuScan:-
http://www.hamrick.com/ (free trial available)



>
>> Some scanners require membership of the lp group (eg. some HPs)

That scanner doesn't require lp group membership.

I gave my Epson (Perfection 1240) scanners away and replaced with
different brands so my memory is dim, but I'm certain that support under
Lenny and Sarge was simpler than Agfa Snapscans.
NOTE: the buttons on the scanner don't work by default under sane - but
it is possible to get them working.

Cheers


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On Mon, Oct 03, 2011 at 02:50:36PM +1100, Scott Ferguson wrote:
> On 02/10/11 23:30, Thomas H. George wrote:
> > On Sun, Oct 02, 2011 at 02:49:04PM +1100, Scott Ferguson wrote:
> >> On 02/10/11 03:25, Thomas H. George wrote:
> >>> On Thu, Sep 29, 2011 at 04:20:01PM -0400, Thomas H. George wrote:
> >>>> I can run xsane as root but not as user tom although tom is a member of
> >>>> the scanner group. What other group membership is required?
> >>>>
> >>> As suggested by responders I have confirmed that I have always been a
> >>> member of the scanner group and I have modified
> >>> /lib/udev/rules.d/60-libsane.rules. This had no effect.
>
> Nothing 'should' need modifying there. Suggest you revert to the original.
>
> >>>
> >>> To pinpoint the problem I ran strace -f -e trace=open,read xsane
> >>> 2>/tmp/output. Here is the tail of /tmp/output
> >>>
> >>>
> >> <snipped>
> >>>
> >>> Any suggestions of how better to pinpoint the cause of the problem?
> >>>
> >>>> Tom
> >>>>
> >>>>
> >>
> >> Tell us your scanner model? :-)
> >>
> > Epson Perfection 2400 Photo
>
> Thanks.
> Your model is listed as supported by sane without mention of issues.
> Search results show few complaints...
>
> Three support choices:-
> ; run with sane - what's your DE, do you have libsane-extras installed?
> does lsusb detect it (or are you using the SCSII connector)?
> (0x04b8:0x011b)
> what front-end are you trying to use?
>
DE is icewm, libsane-extras installed, lsusb detects scanner.

For years I have used this scanner by running it from a terminal with
scanimage saving the image in /tmp/image.pnm and transferring it to
gimp to process. I'm sure originally it ran directly from gimp but then
somehow with a new release of gimp the connection was lost. Last week I
got tired of this roundabout method and tried to reestablish gimp's
ability to acquire images directly from the scanner. As yet I have had
no luck with this - hence this posting.
> ; use the (closed source) Epson recommended drivers for that device
> (ImageScan) this should include the Kowa front-end for negative scanning:-
> http://www.avasys.jp/lx-bin2/linux_e/scan/DL1.do
>
> ; use commercial product VuScan:-
> http://www.hamrick.com/ (free trial available)
>
>
>
> >
> >> Some scanners require membership of the lp group (eg. some HPs)
>
> That scanner doesn't require lp group membership.
>
> I gave my Epson (Perfection 1240) scanners away and replaced with
> different brands so my memory is dim, but I'm certain that support under
> Lenny and Sarge was simpler than Agfa Snapscans.
> NOTE: the buttons on the scanner don't work by default under sane - but
> it is possible to get them working.
>
> Cheers
>
>
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On Mon, Oct 03, 2011 at 02:50:36PM +1100, Scott Ferguson wrote:
> On 02/10/11 23:30, Thomas H. George wrote:
> > On Sun, Oct 02, 2011 at 02:49:04PM +1100, Scott Ferguson wrote:
> >> On 02/10/11 03:25, Thomas H. George wrote:
> >>> On Thu, Sep 29, 2011 at 04:20:01PM -0400, Thomas H. George wrote:
> >>>> I can run xsane as root but not as user tom although tom is a member of
> >>>> the scanner group. What other group membership is required?
> >>>>
> >>> As suggested by responders I have confirmed that I have always been a
> >>> member of the scanner group and I have modified
> >>> /lib/udev/rules.d/60-libsane.rules. This had no effect.
>
> Nothing 'should' need modifying there. Suggest you revert to the original.
>
> >>>
> >>> To pinpoint the problem I ran strace -f -e trace=open,read xsane
> >>> 2>/tmp/output. Here is the tail of /tmp/output
> >>>
> >>>
> >> <snipped>
> >>>
> >>> Any suggestions of how better to pinpoint the cause of the problem?
> >>>
> >>>> Tom
> >>>>
> >>>>
> >>
> >> Tell us your scanner model? :-)
> >>
> > Epson Perfection 2400 Photo
>
> Thanks.
> Your model is listed as supported by sane without mention of issues.
> Search results show few complaints...
>
> Three support choices:-
> ; run with sane - what's your DE, do you have libsane-extras installed?
> does lsusb detect it (or are you using the SCSII connector)?
> (0x04b8:0x011b)
> what front-end are you trying to use?
>
Just found the following:


Script started on Mon 03 Oct 2011 03:38:15 PM EDT
tom@dragon:~$ lsusb -s 001:005
Bus 001 Device 005: ID 04b8:011b Seiko Epson Corp. Perfection 2400 Photo
tom@dragon:~$ scanimage -L
device `epson2:libusb:001:005' is a Epson GT-9300 flatbed scanner
device `epson:libusb:001:005' is a Epson GT-9300 flatbed scanner
tom@dragon:~$ exit

Script done on Mon 03 Oct 2011 03:39:13 PM EDT

As noted above I have been using scanimage from a terminal for a long
time. It has always been a little bit quirky. xsane also thinks it is
using a GT-9300 flatbed scanner. sane-find-scanner finds 0x04b8:0x011b
at 001:005 but does not report a model name.

Could this be my problem?
> ; use the (closed source) Epson recommended drivers for that device
> (ImageScan) this should include the Kowa front-end for negative scanning:-
> http://www.avasys.jp/lx-bin2/linux_e/scan/DL1.do
>
> ; use commercial product VuScan:-
> http://www.hamrick.com/ (free trial available)
>
>
>
> >
> >> Some scanners require membership of the lp group (eg. some HPs)
>
> That scanner doesn't require lp group membership.
>
> I gave my Epson (Perfection 1240) scanners away and replaced with
> different brands so my memory is dim, but I'm certain that support under
> Lenny and Sarge was simpler than Agfa Snapscans.
> NOTE: the buttons on the scanner don't work by default under sane - but
> it is possible to get them working.
>
> Cheers
>
>
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>


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On 04/10/11 07:02, Thomas H. George wrote:
> On Mon, Oct 03, 2011 at 02:50:36PM +1100, Scott Ferguson wrote:
>> On 02/10/11 23:30, Thomas H. George wrote:
>>> On Sun, Oct 02, 2011 at 02:49:04PM +1100, Scott Ferguson wrote:
>>>> On 02/10/11 03:25, Thomas H. George wrote:
>>>>> On Thu, Sep 29, 2011 at 04:20:01PM -0400, Thomas H. George wrote:

<snipped>

>>>> <snipped>
>>>>>
>>>>
>>> Epson Perfection 2400 Photo
>>
<snipped>

> Just found the following:
>
>
> Script started on Mon 03 Oct 2011 03:38:15 PM EDT
> tom@dragon:~$ lsusb -s 001:005
> Bus 001 Device 005: ID 04b8:011b Seiko Epson Corp. Perfection 2400 Photo
> tom@dragon:~$ scanimage -L
> device `epson2:libusb:001:005' is a Epson GT-9300 flatbed scanner
> device `epson:libusb:001:005' is a Epson GT-9300 flatbed scanner
> tom@dragon:~$ exit
>
> Script done on Mon 03 Oct 2011 03:39:13 PM EDT
>
> As noted above I have been using scanimage from a terminal for a long
> time. It has always been a little bit quirky. xsane also thinks it is
> using a GT-9300 flatbed scanner. sane-find-scanner finds 0x04b8:0x011b
> at 001:005 but does not report a model name.


Does it normally? I thought is just reported the device name(?)

>
> Could this be my problem?

Well spotted!
Partially - the identification is correct (sane treats both models
identically as they have the same USB ids)

If the label bothers you - after backing it up, edit
/lib/udev/60-libsane.rules:-
# Epson Perfection 2400 | Epson GT-9300UF | Epson Perfection 2400 PHOTO

and replace with
# Epson Perfection 2400 PHOTO


The problem seems to be that *both* epson and epson2 backends are being
called - I could make a couple of (guesses) suggestions on how to
disable one of the backends, but first try just specifying one of the
devices, if you haven't already eg.:-
$ scanimage -d epson2:libusb:001:005
and
$ scanimage -d epson:libusb:001:005

NOTE: you'll probably need to append a "-x n -y n --format=type >
path/filename"

<snipped>

Cheers


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On 2011-10-03, Thomas H. George <lists@tomgeorge.info> wrote:
(...)
>> >> Tell us your scanner model? :-)
>> >>
>> > Epson Perfection 2400 Photo
>>
>>
(...)
> Just found the following:
>
>
> Script started on Mon 03 Oct 2011 03:38:15 PM EDT
> tom@dragon:~$ lsusb -s 001:005
> Bus 001 Device 005: ID 04b8:011b Seiko Epson Corp. Perfection 2400 Photo
> tom@dragon:~$ scanimage -L
> device `epson2:libusb:001:005' is a Epson GT-9300 flatbed scanner
> device `epson:libusb:001:005' is a Epson GT-9300 flatbed scanner

Same scanner works here on squeeze. Compare settings against:

$ ls -l /usr/bin/xsane
-rwxr-xr-x 1 root root 640536 Sep 5 2010 /usr/bin/xsane*

$ scanimage -L
device `epson2:libusb:001:003' is a Epson GT-9300 flatbed scanner

$ lsusb -s001:003
Bus 001 Device 003: ID 04b8:011b Seiko Epson Corp. Perfection 2400 Photo

$ ls -l /dev/bus/usb/001/003
crw-rw-r--+ 1 root scanner 189, 2 Oct 5 08:45 /dev/bus/usb/001/003

$ ls -ld /etc/sane.d
drwxr-xr-x 3 root root 4096 Aug 21 14:39 /etc/sane.d/

$ ls -l /etc/sane.d/epson*
-rw-r--r-- 1 root root 376 Dec 12 2010 /etc/sane.d/epson2.conf
-rw-r--r-- 1 root root 793 Dec 12 2010 /etc/sane.d/epson.conf

$ ls -l /etc/sane.d/dll.conf
-rw-r--r-- 1 root root 1063 Dec 12 2010 /etc/sane.d/dll.conf

$ grep epson /etc/sane.d/dll.conf
#epson
epson2

$ grep -B1 011b /lib/udev/rules.d/60-libsane.rules
# Epson Perfection 2400 | Epson GT-9300UF | Epson Perfection 2400 PHOTO
ATTRS{idVendor}=="04b8", ATTRS{idProduct}=="011b", MODE="0664",
GROUP="scanner", ENV{libsane_matched}="yes"


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On Wed, Oct 05, 2011 at 08:57:59AM -0400, Alan Greenberger wrote:
> On 2011-10-03, Thomas H. George <lists@tomgeorge.info> wrote:
> (...)
> >> >> Tell us your scanner model? :-)
> >> >>
> >> > Epson Perfection 2400 Photo
> >>
> >>
> (...)
> > Just found the following:
> >
> >
> > Script started on Mon 03 Oct 2011 03:38:15 PM EDT
> > tom@dragon:~$ lsusb -s 001:005
> > Bus 001 Device 005: ID 04b8:011b Seiko Epson Corp. Perfection 2400 Photo
> > tom@dragon:~$ scanimage -L
> > device `epson2:libusb:001:005' is a Epson GT-9300 flatbed scanner
> > device `epson:libusb:001:005' is a Epson GT-9300 flatbed scanner
>
> Same scanner works here on squeeze. Compare settings against:
>
Thank you for a very interesting set of comparisons. My files all have
exactly the same permissions. There are minor differences as shown
below.

> $ ls -l /usr/bin/xsane
> -rwxr-xr-x 1 root root 640536 Sep 5 2010 /usr/bin/xsane*
>
> $ scanimage -L
> device `epson2:libusb:001:003' is a Epson GT-9300 flatbed scanner

$ scanimage -L
device `epson2:libusb:001:005' is a Epson GT-9300 flatbed scanner
device `epson:libusb:001:005' is a Epson GT-9300 flatbed scanner

> $ lsusb -s001:003
> Bus 001 Device 003: ID 04b8:011b Seiko Epson Corp. Perfection 2400 Photo
>
> $ ls -l /dev/bus/usb/001/003
> crw-rw-r--+ 1 root scanner 189, 2 Oct 5 08:45 /dev/bus/usb/001/003
>
> $ ls -ld /etc/sane.d
> drwxr-xr-x 3 root root 4096 Aug 21 14:39 /etc/sane.d/
>
> $ ls -l /etc/sane.d/epson*
> -rw-r--r-- 1 root root 376 Dec 12 2010 /etc/sane.d/epson2.conf
> -rw-r--r-- 1 root root 793 Dec 12 2010 /etc/sane.d/epson.conf

$ ls -l /etc/sane.d/epson*
-rw-r--r-- 1 root root 376 May 3 2008 /etc/sane.d/epson2.conf
-rw-r--r-- 1 root root 793 May 3 2008 /etc/sane.d/epson.conf

> $ ls -l /etc/sane.d/dll.conf
> -rw-r--r-- 1 root root 1063 Dec 12 2010 /etc/sane.d/dll.conf
>
$ ls -l /etc/sane.d/dll.conf
-rw-rw-r-- 1 root root 825 Feb 15 2009 /etc/sane.d/dll.conf

> $ grep epson /etc/sane.d/dll.conf
> #epson
> epson2
>
$ grep epson /etc/sane.d/dll.conf
epson
epson2

> $ grep -B1 011b /lib/udev/rules.d/60-libsane.rules
> # Epson Perfection 2400 | Epson GT-9300UF | Epson Perfection 2400 PHOTO
> ATTRS{idVendor}=="04b8", ATTRS{idProduct}=="011b", MODE="0664",
> GROUP="scanner", ENV{libsane_matched}="yes"
>
>
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On Sat, Oct 08, 2011 at 12:09:51PM +1100, Scott Ferguson wrote:
> On 08/10/11 01:31, Thomas H. George wrote:
> > On Fri, Oct 07, 2011 at 10:37:04AM +1100, Scott Ferguson wrote:
> >> On 06/10/11 01:38, Thomas H. George wrote:
> >>> On Wed, Oct 05, 2011 at 08:57:59AM -0400, Alan Greenberger wrote:
> >>>> On 2011-10-03, Thomas H. George <lists@tomgeorge.info> wrote:
> >>>> (...)
> >>>>>>>> Tell us your scanner model? :-)
> >>>>>>>>
> >>>>>>> Epson Perfection 2400 Photo
> >>>>>>
> >>>>>>
> >>>> (...)
> >>>>> Just found the following:
> >>>>>
> >>>>>
> >>>>> Script started on Mon 03 Oct 2011 03:38:15 PM EDT
> >>>>> tom@dragon:~$ lsusb -s 001:005
> >>>>> Bus 001 Device 005: ID 04b8:011b Seiko Epson Corp. Perfection 2400 Photo
> >>>>> tom@dragon:~$ scanimage -L
> >>>>> device `epson2:libusb:001:005' is a Epson GT-9300 flatbed scanner
> >>>>> device `epson:libusb:001:005' is a Epson GT-9300 flatbed scanner
> >>
> >> Alan's post has broken the thread - but in a previous post I mentioned
> >> that "The problem seems to be that *both* epson and epson2 backends are
> >> being called"
> >>
> >> <snipped>
> >>>> $ grep epson /etc/sane.d/dll.conf
> >>> epson
> >>> epson2
> >>
> >> This is where epson *and* epson2 are *both* being called.
> >> Comment one of them out.
> >> The default on Squeeze is for *only* the epson2 backend to be active.
> >>
> > I did comment out epson in dll.conf. This did not solve the problem.
> >> What was the result of trying the suggested scanimage commands? (in the
> >> post you didn't respond to)
> >>
> >> Cheers
> >>
> >>
> > I did respond to Alan's post repeating all his commands and finding no
> > difference in the file permissions. I don't know why that response
> > didn't appear in this thread.
>
> It may have, and I may have missed it.
> I still can't find your answer to the outcome of running:-
> $ scanimage -d epson2:libusb:001:005
> and
> $ scanimage -d epson:libusb:001:005

These commands respond "output is not a file, exiting"

To add to the confusion xcanimage now works from a command line, no more
segfault. I have changed nothing since installing iscan. My best guess
is that commenting out epson in /etc/sane.d/dll.conf may have solved the
problem but only took effect after the system was rebooted.

> <snipped>
> >
> > Tom
> >> --
>
>
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