I found a solution: sudo mkdir /lib/modules/3.0.0-12-generic/source sudo ln -s /usr/include /lib/modules/3.0.0-12-generic/source/
then I had some permissions issues: anjinhuviny@viny-server:~$ ossmix /dev/mixer: Permission denied anjinhuviny@viny-server:~$ osstest Sound subsystem and version: OSS 4.2 (b 2005/201110151348) (0x00040100) Platform: Linux/x86_64 3.0.0-12-generic #20-Ubuntu SMP Fri Oct 7 14:56:25 UTC 2011 *** Scanning sound adapter #-1 *** /dev/oss/oss_cs42810/pcm0 (audio engine 0): CS4281 - Performing audio playback test... /dev/oss/oss_cs42810/pcm0: Permission denied Can't open the device *** Some errors were detected during the tests *** the solution to these problems are simple: sudo chmod 777 /dev/mixer sudo chmod 777 -R /dev/oss -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/858175 Title: oss4-dkms 4.2-build2004-1ubuntu1: oss4 kernel module failed to build (fatal error: bits/predefs.h: No such file or directory) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/oss4/+bug/858175/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs