Bugzilla – Bug 115019
Surround problems with M-Audio Revo 7.1
Last modified: 2005-09-05 12:30:06 UTC
The surround 4.0 output on M-Audio Revolution 7.1 doesn't work. This is because the internal buffers are wrongly assigned in the combination of plug and route plugins. This bug may affect other outputs using route plugins, or mmap modes.
The definition of surround40 config in ICE1724.conf is anyway buggy. The slave channels must be 6.
Related bugs on ALSA BTS: https://bugtrack.alsa-project.org/alsa-bug/view.php?id=1360 https://bugtrack.alsa-project.org/alsa-bug/view.php?id=1392 There are likely other hidden bugs with surround outputs on VIA chip.
Fixed on rc1.