Sep 192013
 

Knoppix logoSince 2 or 3 years I have been building a Knoppix-based Linux-on-CD distribution for teaching (exercises and exams) at our University. A colleague of mine has written the proper server/client tools for source code submission and evaluation while I have adapted and hardened the system for our needs, based on tons of modifications on the CD and also on the server side, from where a lot of local behavior is controlled by server-side scripts which can dis-/enable the network or USB ports on clients, but which can also shut clients down or verify the media to effectively prevent CD forgery (Its pretty cool to see them students try, so far they never came even remotely close to breaking it).

Now I am supposed to ensure that the system can use sound. It seems some Java-based exercises may contain sound creation and playback in the future. To make sure the system can support new sound chips (which it currently does not) and potentially also new GPUs I tried to hack a new Linux kernel into the system to replace the good old 2.6.32.6, which had the ALSA sound system built in, so I couldn’t update it as a kernel module. Also, updating the whole 6.2.1 thing to Knoppix 7 is just not an option, as it would be far too much work. The kernel update it had to be.

And so the adventure began…

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