<p>There are also kernel command line switches that you can try. You will need to read the documentation in the kernel tree on the ALSA subsystem generally, and your card (driver) specifically. Some chipsets, such as those that use HDA, need to be told what you have or they fall back to a generic profile.</p>
<div class="gmail_quote">On Nov 14, 2011 9:50 PM, "Ron Frazier" <<a href="mailto:atllinuxenthinfo@c3energy.com">atllinuxenthinfo@c3energy.com</a>> wrote:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hi Pete,<br>
<br>
I haven't loaded any specific drivers for sound in Ubuntu. It's using<br>
whatever the system detected and put in at installation. Do you know<br>
how I might troubleshoot that?<br>
<br>
Sincerely,<br>
<br>
Ron<br>
<br>
On 11/14/2011 09:23 PM, Pete Hardie wrote:<br>
> I was having this issue with Fedora 15, and the big G revealed that<br>
> it's the lack of the specific drivers for your soundcard that prevents<br>
> the headphone jack from pre-empting the speakers. I updated my system<br>
> shortly after and rebooted, and I got the desired behavior.<br>
><br>
> So if you have the specifics for your driver, make sure it's loaded in<br>
> the kernel and reboot.<br>
><br>
><br>
> On Mon, Nov 14, 2011 at 21:17, Ron Frazier<br>
> <<a href="mailto:atllinuxenthinfo@c3energy.com">atllinuxenthinfo@c3energy.com</a>> wrote:<br>
><br>
>> Hi all,<br>
>><br>
>> I had a couple of interesting experiences with my Ubuntu 11.04 (as of a<br>
>> few days ago) pc. I thought I'd share it in case other people have the<br>
>> same issue.<br>
>><br>
>> The first thing is, when I plug in the headphones, the external speakers<br>
>> still continue running. I haven't found a solution to that, but have<br>
>> found a workaround. I have the MSI 790FX-GD70 MB and I think it has a<br>
>> Realtek audio chip set. If I'm running Windows, when I plug the<br>
>> headphone in, it pops up a dialog and asks me what I plugged in. It<br>
>> defaults to headphone. I acknowledge the dialog and the speakers mute.<br>
>><br>
>> When I go to the audio preferences in Ubuntu, I have the settings for<br>
>> the sound set to 5.1 audio. The headphones do work, as does the mic,<br>
>> but the speakers just keep running.<br>
>><br>
>> I got around the problem by plugging in a USB audio adapter that I got<br>
>> with some headphones a couple of years ago. Back then, I hadn't seen<br>
>> anything like this. However, a search for USB sound card on NewEgg<br>
>> reveals about 200 options. Once I set the audio output to the USB audio<br>
>> adapter, then the sound comes out the headphones and the speakers mute.<br>
>><br>
>> At first, the USB adapter wouldn't work properly. I found this article<br>
>> which said how to reset pulseaudio.<br>
>><br>
>> <a href="http://www.ossramblings.com/using-usb-headset-adapter-ubuntu-lucid" target="_blank">http://www.ossramblings.com/using-usb-headset-adapter-ubuntu-lucid</a><br>
>><br>
>> pulseaudio -k<br>
>> pulseaudio --check<br>
>><br>
>> I have no idea what that did, but it worked.<br>
>><br>
>> Sincerely,<br>
>><br>
>> Ron<br>
<br>
--<br>
<br>
(PS - If you email me and don't get a quick response, you might want to<br>
call on the phone. I get about 300 emails per day from alternate energy<br>
mailing lists and such. I don't always see new messages very quickly.)<br>
<br>
Ron Frazier<br>
<br>
<a href="tel:770-205-9422" value="+17702059422">770-205-9422</a> (O) Leave a message.<br>
linuxdude AT <a href="http://c3energy.com" target="_blank">c3energy.com</a><br>
<br>
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