[X2Go-Dev] Bug#724: Explanation

[Andreas Glaeser]

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The problem should be easily fixable, because it vanishes, when the same user, 
that has
an x2go-session running and wants to do a scanning-job over it, is logged in 
locally on
the server.
But if you want to tell me, it is actually a feature and not a bug, well, then 
you are
free to do so.
I heard already there is something upcoming like a usb-over ethernet driver. 
This would be
a viable workaround then.
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[X2Go-Dev] Bug#724: Scanning does not work over romote-desktop session with sane

[Andreas Glaeser]

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Package: x2goserver-xsession 
Version: 4.0.1.18-0x2go1+git20141006.949+wheezy.main.1

simple-scan does not work over x2go-remote-desktop session.
See there: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=761398

It is most probably a problem with user-rights and and with the sane-backend.
When trying to scan, it looks like this on the terminal:

andreas@md-ho:~$ simple-scan
p11-kit: invalid config filename, will be ignored in the
future: /etc/pkcs11/modules/gnome-keyring-module

** (simple-scan:23088): WARNING **: scanner.vala:801: Unable to get open 
device: Access
to resource has been denied

xsane says: 'Failed to open device 'pixma:04A9172B': Access to resource has 
been dnied.

But scanning works, when there is a local session running on the machine (i.e. 
the
remote-desktop server) from the same user.

Normally this is no problem at all for thin-clients, because they do not have a 
scanner
connected to the desktop-server. But in my case it is a problem. I also do 
acknowledge
that not many people do have this problem, so it is severity 3 only.

Please let me know, if I should rather report this against the sane-backend.

There is the original report:
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=774830

 Package: x2goserver-xsession 
 New: yes
 State: installed
 Automatically installed: no
 Version: 4.0.1.18-0x2go1+git20141006.949+wheezy.main.1
 Priority: optional
 Section: x11
 Maintainer: X2Go Developers x2go-...@lists.berlios.de
 Architecture: all
 Uncompressed Size: 80.9 k
 Depends: x2goserver (= 4.0.1.18-0x2go1+git20141006.949+wheezy.main.1), 
 x2goserver (
  4.0.1.18-0x2go1+git20141006.949+wheezy.main.1.1~), x11-common
 Description: X2Go server daemon scripts (Xsession runner)
  X2Go is a server based computing environment with 
  * session resuming 
  * low bandwidth support 
  * session brokerage support 
  * client-side mass storage mounting support 
  * client-side printing support 
  * audio support 
  * authentication by smartcard and USB stick 

  This X2Go server add-on enables Xsession script handling when starting 
 desktop sessions
  with X2Go. 
  
  Amongst others the parsing of Xsession scripts will enable desktop-profiles, 
 ssh-agent
  startups, gpgagent startups and many more Xsession related features on X2Go 
 session
  login automagically.
 Homepage: http://code.x2go.org/releases/source/x2goserver

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