David, Tried your modified nvidia.conf from bug 771739. Restarted the system and noticed options (internal mic, front mic, rear mic) previously available at Maverick are back. Tested Sound Recorder with each one, switching options on Sound Preferences and opening Sound Recorder at each time. Noticed, as expected, that internal or front mic don't work since it is a desktop and the mic connector is at the back. If set to rear mic some sound can be heard. Moved the input and output volume controls up and down and couldn't find a way to obtain a decent capture, just a lot of white noise and a distant whisper. Noticed however that increasing the output volume leads easily to saturation, in a way much different of the 10.10 behavior. Even the default output sound at startup sounds "cracked", It seems that I'm not facing bug 771739 only. My tests with alsamixer showed similar results.
Are these codecs much different? Is there a way to load Maverick's alsa driver into Natty? Although the volume levels at Maverick are modest (no amplified speakers), alsa works perfectly on this very hardware. Maverick: snd_hda_codec_nvhdmi NVIDIA HDMI HD-audio codec Natty: snd_hda_codec_hdmi HDMI HD-audio codec -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-media in Ubuntu. https://bugs.launchpad.net/bugs/771633 Title: [Natty] Realtek ALC888 0x10ec0888 - mic not functional -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
