Thanks for the reply.
I tried "fuser -v /dev/dsp* /dev/snd/* /dev/seq*" and found out that Adobe Flash Player was directly controlling /dev/snd/pcmC0D0p. That is when I realized I need to create /etc/asound.conf to route ALSA library to PulseAudio. The content of asound.conf follows this webpage https://wiki.ubuntu.com/PulseAudio .
Regards, Darsen
On Sun, Feb 7, 2010 at 5:29 AM, Daniel Chen seven.steps@gmail.com wrote:
On Sun, Feb 7, 2010 at 3:20 AM, Darsen Lu darsenlu@gmail.com wrote:
After that I started noticing conflicts between different sound-playback applications. For example, if I watch a Flash video on Firefox, stop it, and then start playing an MP3 file on Totem (a Media Player), I don't hear any sound. Once I close Firefox the music from Totem starts coming out. This never happened before on my Linux system. I'd be very grateful if someone could give me advices!
This symptom is very improbably related to your upgrading of the driver. Instead, it's a userspace issue. Use "sudo fuser -v /dev/dsp* /dev/snd/* /dev/seq*" when you're experiencing the symptom to start troubleshooting.
Best, -Dan