FreeBSD Manual Pages
vmixctl(7) OSS Devices vmixctl(7) NAME oss_ich - Intel ICH/SiS7012/Nvidia/AMD audio device driver. DESCRIPTION Open Sound System driver for Intel ICH, nVidia Nforce, AMD and SiS 7012 devices. OPTIONS • intelpci_rate_tuning=<NNN> (default is 240) Some Compaq Deskpro mod- els (EN and EX at least) and certain Dell models play and record au- dio at a higher speed than what is expected. If you have an Intel815 motherboard with an AD1885 you can try setting the parameter to 240, 280 or 330 and see which works for your system. The way to figure out the the right intelpci_rate_tuning value is using the osstest application. It reports a sample rate drift value ("Sample rate drift" or "srate drift"). Use the following formula (round the re- sult to the nearest integer): <intelpci_rate_tuning = (240*(drift+100))/100> • intelpci_force_mmio=<0|1> (default is 0=Disable) This option can be used to force the ICH4/ICH5 and ICH6 controllers to run in memory mapped mode to free up I/O address space. • ich_jacksense=<0|1> (default is 0) Force use of jacksensing on some AD198x mixers. FILES /usr/local/lib/oss/conf/oss_ich.conf Device configuration file. AUTHOR 4Front Technologies 12 April 2025 vmixctl(7)
NAME | DESCRIPTION | OPTIONS | FILES | AUTHOR
Want to link to this manual page? Use this URL:
<https://man.freebsd.org/cgi/man.cgi?query=oss_ich&sektion=7&manpath=FreeBSD+Ports+14.3.quarterly>