cups woes

March 4th, 2008

I just tried to get cups working and had the following problem:

I have a Lexmark Optra E+ parallel port printer and usually cups shows the parallel port as Device: on the second configuration screen. Only this time cups did not recognize the parallel port. lptest > /dev/lpt0 worked fine, just cups could not see the parallel port.

After about half an hour I finally found the solution:

# ls -l /dev/lpt0
crw——-  1 root  wheel    0,  57 Mar  4 20:00 /dev/lpt0

The rights on /dev/lpt0 were not set correctly. After changing them, everything worked fine:

# chmod 666 /dev/lpt0
# ls -l /dev/lpt0
crw-rw-rw-  1 root  wheel    0,  57 Mar  4 20:00 /dev/lpt0

Always compile audacious with dbus

March 4th, 2008

When I compiled audacious without dbus support yesterday I did not know it would break all application options (i.e. entering audacious -f on a shell skips to the next track) . Today I read a bit in the audacious sources and found that it has to be compiled with dbus support in order to work.

k3b on FreeBSD

March 4th, 2008

Today I configured k3b on FreeBSD. The building from ports works fine (although it took almost all morning. But then again k3b depends on most of KDE ;-)).

Turns out all I had to do was to enable the ATAPI/CAM Driver: link

Running ion3 on FreeBSD

March 2nd, 2008

I just started to try out FreeBSD 7.0 (I am very impressed so far) and ran into huge problems installing my favorite window manager ion3 . Apparently the main developer had some trouble with various distribution maintainers and forbade then to ship ion (link).

After some try and error (and a pointer in the right direction by Markus) I finally figured out how to tweak the to make ion3 compile.

I had to change the following things:

  • install to $(HOME)/ion (you have to create this directory first)
  • comment DL_LIBS=-ldl (as this lib seems to be part of the FreeBSD libc anyway)
  • Set the path for lua 5.1


Parallel Computing Research

February 9th, 2008

while reading slashdot I stumbled over this interesting website:

The Landscape of Parallel Computing Research: A View From Berkeley

Lots of interresting information about parallel computing, videos and even slides.

Configuration files

February 7th, 2008

As a long time Slackware user I customized some of my config files and I guess my blog is a great place to back them up :)





A note about /etc/rc.d/rc.mysqld: It contains the line:


If you ever try to connect to the local mysql server with Java you have to uncomment this line (it cost me serveral hours to figure that out…)

Frist p0st!

February 6th, 2008

So finally I was convinced to try out wordpress and start my own blog. And I avoided it for so many years. Damn Web 2.0 ;-)

I am not sure if I will blog regularly (or at all) nor do I know what I will blog about; but thank you for reading this anyway :)