I have a Creative SB X-Fi Xtreme PCI-Ex, and Logitech Z-5500 5.1 THX speakers.
All speakers work; all software, drivers
and codecs are up-to-date.
Recently I noticed that in the Speaker Setup screen, the test button only results in sound from the left and right front speakers.
I checked because after a VLC update, mkv files no longer played correctly in the 5.1 mode. Music played, but the voices were muted (while no speakers are muted, and all are connected). I have to select "2 front, 2 rear" Audio Device in order to hear the speech as well.
I have the same problem when playing movies in PowerDVD, where I have to select the 2-speakers setting in order to hear all the sound.
- Previously the test button did sound all 5 speakers
- The test button on the Logitech remote still sounds all 5 speakers
I have Windows 7 Professional, 32 bit.