Same bug happened to me but I found an easy way to resolve it at least for my case: In the sound settings I switch to the "Hardware" tab. There, for me, two devices are shown: "RV710/730" and "Internal Audio". If for "RV710/730" I switch the profile from "HDMI profile" to "Off" (thus disabling the device) everything works fine (reproducible). To me it seems as firefox/flash just takes the first available device it can find no matter what device it is. HTH
My system: Samsung N720-Auro (Stievo) Ubuntu 11.10 (Linux 3.0.0-19-generic #33-Ubuntu SMP Thu Apr 19 19:05:14 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux) Installed packages: firefox 12.0+build1-0ubuntu0.11.10.1 pulseaudio 1:1.0-0ubuntu3.1 flashplugin-installer 11.2.202.235ubuntu0.11.10.1 -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to firefox in Ubuntu. https://bugs.launchpad.net/bugs/858466 Title: Ubuntu 11.10 Audio Problems with Browsers. Status in “firefox” package in Ubuntu: Confirmed Bug description: all browsers dont have sound, applications do have sound, while testing OpenShot Video Editor i found out that also there videos that i created dont have sound. so here the Answers: (1) Do you get sound in other applications, or do you have no sound at all on your Oneiric system? Only browsers and OpenShot Video editor have no sound on output. (2) Are you using Firefox, or some other browser? Firefox and Chromium (3) Does the problem occur in another web browser? (If you are using Firefox, you could try Chromium, which you can get by installing the package called chromium-browser in the Software Center.) All other browsers. (4) Does the problem occur in another user account? If you only have one user account, you can create a second one for testing purposes. Both user accounts (5) What is the output of this command, run in the Terminal (Ctrl+Alt+T to open a Terminal window, then copy the command from your web browser, paste it into the Terminal, press enter to run it, then do Edit > Select All to select all the text in the Terminal, do Edit > Copy to copy it all to the clipboard, then paste it into your post here): No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu oneiric (development branch) Release: 11.10 Codename: oneiric ii flashplugin-downloader:i386 10.3.183.10ubuntu1 Adobe Flash Player plugin downloader ii flashplugin-installer 10.3.183.10ubuntu1 Adobe Flash Player plugin installer To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/858466/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
