Florin Andrei wrote: > I got a Gigabyte GA-M78SM-S2H motherboard for a MythTV system: > > http://www.gigabyte.com.tw/Products/Motherboard/Products_Overview.aspx?ProductID=2817 > > It's a decent board for a home theater thing. VGA, DVI, HDMI, analog > sound, S/PDIF - it has everything on-board. The onboard GeForce 8200 can > even seem to do 1080p over HDMI with no obvious issues so far. > > It has a Realtek ALC888 sound chip. With Mythbuntu 8.04.1 (based on > Ubuntu 8.04.1) 64 bit, sound was basically broken. When playing > anything, there was a very large amount of "static" over the sound, > crackling, echoes, etc. Like a speaker on overdrive, with echoes. Unusable. > Mythbuntu 8.10rc4 was the same. > > I compiled and installed ALSA 1.0.18rc3 (driver, lib and utils) on top > of Mythbuntu 8.04.1 and now I have clean analog sound. No more > distorsion. Excellent! > > Now, the coax S/PDIF output is turned off by default. If I run alsamixer > and unmute the S/PDIF, I do get the S/PDIF carrier on the output (the > LED on the receiver lights up), but now alsamixer is frozen hard. I > can't kill the process. If I reboot the OS, it would hang trying to kill > alsamixer. I have to hit the reset button. And the S/PDIF doesn't even > stay activated after reboot. I just installed Mythbuntu 8.10 64bit on this machine. I'm using the distro's default kernel (latest kernel update package that comes with the distro actually) 2.6.27. I guess it's ALSA-1.0.17 The analog output suddenly works fine. I get normal volume, clean output, no distorsions. I can enable digital output with alsamixer and that too works fine. I have no explanation for this. I am not going to try to compile / install a different ALSA version, I've been mucking with this system for too long (for unrelated reasons). -- Florin Andrei http://florin.myip.org/ ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user
