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Having trouble installing a piece of hardware? Want to know if that peripheral is compatible with Linux?
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In KDE, Control Panel, Sound and multimedia, Sound System, Hardware, you can select which sound system you want to use.
There is probably something similar in Gnome but I wouldn't know as I avoid using it (no flames please)
However don't be surprised if ALSA is already selected! I used to get this message too and attributed it to a timing problem, ie the sound system took longer to initialise than the boot process was willing to wait.
In Gnome I found something under System > Administration > Device Manager. But there I only see what kind of hardware I have... Nothing to choose (and I see I have nVidia CK 804 capture/playback/... ALSA stuff).
The thing is that I have sound, but can't use twinkle phone . So I always have to boot to windows to call... Kinda stupid .
I just found System > Preferences > Multimedia Systems Selector. Seems what you meant...
When testing ALSA I get a rather high constant tone... So I guess that's OK?
I tried twinklephone after that and I heard it rang, and it didn't gave any error, so it's resolved by this small little trick of yours