Ralf's questions

I'm sorry, I tried many things but without success, and could use some help. I have a Canon i-Sensys MF645Cx multifunction printer / scanner connected via my home LAN. Printing worked out-of-the-box, now I wanted to use the scanner.

I installed from the Canon webpage

https://www.canon-europe.com/support/consumer_products/products/fax__multifunctionals/laser/laserbase_mf_series/i-sensys-mf645cx.html?type=drivers&language=en&os=linux%20(64-bit)

• UFR II/UFRII LT Printer Driver for Linux V5.10 (printer is not shown on registration, I added the printer and its IP-address for "socket")
• CQue driver "deb"

I played around with ufw firewall rules e.g.

% sudo ufw status
Status: active

To                         Action      From
--                         ------      ----
8610/udp                   ALLOW       Anywhere                  
8612/udp                   ALLOW       Anywhere                  
8610/udp (v6)              ALLOW       Anywhere (v6)             
8612/udp (v6)              ALLOW       Anywhere (v6)

and tried to edit /etc/sane.d/pixma.conf, with either line added

bjnp://192.168.2.100
mfnp://192.168.2.100

but when I start xsane (e.g. with the mfnp line activated), I get

% xsane
[bjnp] udp_command: ERROR - no data received (timeout = 1000)
[bjnp] bjnp_init_device_structure: Cannot read mac address, skipping this scanner
[bjnp] udp_command: ERROR - no data received (timeout = 1000)
[bjnp] add_scanner: ERROR - Cannot read scanner make & model: bjnp://192.168.2.100:8612/timeout=1000

I also tried https://launchpad.net/~rolfbensch/+archive/ubuntu/sane-git

sudo add-apt-repository ppa:rolfbensch/sane-git
sudo apt-get update

but that didn't change anything.

I also added myself to the groups scanner and saned according to https://wiki.ubuntuusers.de/Scanner/#Hardware, without success.

Any ideas how I can get the the scanner working? Thanks a lot!

I'm using a US keyboard layout, but occasionally need to type German umlauts. So far I used .Xmodmap with definitions like this

keycode 133 = Mode_switch NoSymbol Mode_switch
keycode  38 = a A adiaeresis Adiaeresis aacute Aacute
keycode  39 = s S ssharp ssharp ssharp section

where I can reach the umlauts and the sharp s via the Windows key plus a/o/u/s. How can I achieve exactly (really got used to it...) the same behavior with the new xkb system (config file /usr/share/X11/xkb/symbols/pc). It looks even more complicated than Xmodmap.

I would appreciate any help.