I've been dual booting with Mepis for about a year now and about 3 months ago switched to 6.5. As soon as i switched from 6.0 to 6.5 everything went flawlessly until I tried to watch a video in firefox. You guessed it, no sound. I've bee all over the internet, forums and googled my fingers to the bone trying to find an answer and have found none.
I have came to a conclusion and hopefully someone more Mepis savvy than I can confirm my theory. I believe there is something in the newer kernel that allows the 3D beryl to work that the older kernel didn't AND with that newer kernel there is something in there that messes with the sound. I reinstalled 6.0 and i got sound back. I then tried to upgrade to 6.5 through the repos with synaptic incrementally. Once I reached the point where i installed the new kernel, that's when I lost sound.
Could someone please reply to this and let me know if my thinking is right or am I just loopy.
Oh yeah and if you did fine another way around this, that would be great. I'm trying to get Firefox to run through crossover and see if that works. I can't figure out wine to save my life. I'll update in a few days and post my results
thanx for your time