I boot into live CD fedora 11 again, and it turns out both my headphone and speaker work well(actually even the mute button is ok). but there is still no sound when booting into my HDD F11. And I find something is different between those two os. Run "alsamixer -c0" in HDD F11, I see configuration options like: Master Headphon Speaker PCM Mic Mic Boos S/PDIF S/PDIF D ... Internal while in live CD F11, I could see configuration options like: Master Headphon PCM Mic Mic Boos IEC958 IEC958 D IEC958 P ... Speaker The configuration options' sequence is different( for example *Speak*) , IEC958 disappear and S/PDIF is new. Has it to do with "no sound" issue? For example some inappropriate update? <div class="gmail_quote">2009/10/1 Matthew Saltzman <<a href="mailto:mjs@clemson.edu" target="_blank">mjs@clemson.edu</a>> <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> On Thu, 2009-10-01 at 11:31 +0800, Yu Lex wrote: yeah, thanks for your input, but I believe I have tried that, not mute physically. Still no sound. In fact, on my T61, the mute button is non-functional. I've discovered that turning the volume all the way down turns on the mute indicator in GNOME, but it would be nice if the mute button actually toggled mute the way it's designed to. I'd like to file this as a bug, but I'm not sure what component to file it against. Suggestions welcome. TIA. 2009/10/1 Ron Siven <<a href="mailto:rsiven@gmail.com" target="_blank">rsiven@gmail.com</a>> > On Wed, Sep 30, 2009 at 10:12 PM, Yu Lex <<a href="mailto:lex.yucai.yu.fedora@gmail.com" target="_blank">lex.yucai.yu.fedora@gmail.com</a>>wrote: > >> Hello, >> >> My headphone worked before, however, after some installation and update, I >> found there was no sound on my T61 any more. I have tried "alsamixer -c0" or >> "gst-mixer" to unmute all "MM" stuff, however it did not work. At present, >> the only thing I can hear is the electronic noisy in my headphone. Could >> anybody help me? Any comment will be really appreciated!! >> >> Thanks in advance. >> >> Lex >> -- Matthew Saltzman Clemson University Math Sciences mjs AT clemson DOT edu <a href="http://www.math.clemson.edu/%7Emjs" target="_blank">http://www.math.clemson.edu/~mjs</a> -- fedora-list mailing list <a href="mailto:fedora-list@redhat.com" target="_blank">fedora-list@redhat.com</a> To unsubscribe: <a href="https://www.redhat.com/mailman/listinfo/fedora-list" target="_blank">https://www.redhat.com/mailman/listinfo/fedora-list</a> Guidelines: <a href="http://fedoraproject.org/wiki/Communicate/MailingListGuidelines" target="_blank">http://fedoraproject.org/wiki/Communicate/MailingListGuidelines</a> </blockquote></div>