Created attachment 847742 [details] speaker-headphone-speaker-problem.ogv - I listen to something which makes sound, for example a youtube video and hear the sound correctly via the speakers of the Lenovo T520. In “gnome-control-center sound” I see that the speaker icon in Choose a device for sound output: [sound card icon] アナログ出力 - 内部オーディオ [speaker icon] スピーカー・内部オーディオ <- selected is selected. - I plug in a headset and hear the sound correctly via the headset, the speakers are switched off automatically. Now the headset icon is selected in “gnome-control-center sound”: Choose a device for sound output: [sound card icon] アナログ出力 - 内部オーディオ [headset icon] アナログヘッドフォン・内部オーディオ <- selected - Now I pull the plug of the headset again: -> Silence! The sound does not return to the speakers. In “gnome-control-center sound” now the sound card icon is selected: Choose a device for sound output: [sound card icon] アナログ出力 - 内部オーディオ <- selected [speaker icon] スピーカー・内部オーディオ - Now I click in “gnome-control-center sound” on the speaker icon again and the sound returns to the speakers. I would expect that the sound automatically returns to the speakers when pulling out the headset. Actually this is not 100% reproducible, I thought it was but while writing this bug report, I found that sometimes the sound returns to the speakers when pulling the headset plug and sometimes it does not. It seems to me that more often the sound does not return to the speakers when pulling the headset, I tried many times now, it seems to be rather random. See attached video. Hardware: Lenovo T520 mfabian@ari:~ $ cat /etc/redhat-release Fedora release 20 (Heisenbug) mfabian@ari:~ $ rpm -q control-center control-center-3.10.2-3.fc20.x86_64 mfabian@ari:~ $ rpm -q pulseaudio pulseaudio-4.0-9.gitf81e3.fc20.x86_64 mfabian@ari:~ $
100% reproducible way for me: Plug in headphones while system is running. Shutdown system with headphones plugged in. Unplug them. Turn on system. Result: Speaker are at 0% volume. I think the problem is that automute not only mutes the speaker, the volume level is also set to zero.
I have similar symptoms as Mike FABIAN. gnome-control-center shows "Analog output - Built-in audio" with soundcard icon and "Speakers - built in audio" with speaker icon, when headphones are not plugged-in. After disconnecting headphones, Speaker is always selected, but the sound does not play (in contrast to Mike FABIAN's version). Switching to "Analog output" starts playing sound, but must be done after every disconnection of headphones. I tried running alsamixer and selecting "0 HDA Intel PCH" to see what is happening. When with controls in gnome-control-center, three sliders, "Master", "Headphone", "Speaker", seem to be affected. Slider in g-c-c changes master (seems to be working fine). Selecting "speakers" in g-c-c sets "speaker" in alsamixer to 100 and headphones to 0 and mute. Selecting "analog output" in g-c-c sets "Headphone" in alsamixer to 100 and "speaker" to 0 (not mute). Moving "Headphone" slider up in alsamixer while g-c-c has "Speakers" selected affects sound output from speakers. "Speaker" slider in alsamixer seems to do nothing.
It seems that booting from live CD and removing content of /var/lib/alsa/ (especially file asound.state, but I removed also asound.state.lock, so I mention it here in case it is relevant) helped me (when I removed the files from running system, it seemed to recreate wrong file back). Now inserting and removing phones switches the sound as it should. The devices in gnome-control-center that are used are Headphone and Speaker and it switches between theese two as expected. A smaller problem persists: after reboot and login the sound does not play from speakers (after inserting phones it plays from phones, after removing it plays from speakers). It seems connected to this bug - when in gnome-contro-center "Analog Output - Built-in audio" is selected, speakers do not play (with phones removed).
It works on Fedora 21.
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Fedora 20 changed to end-of-life (EOL) status on 2015-06-23. Fedora 20 is no longer maintained, which means that it will not receive any further security or bug fix updates. As a result we are closing this bug. If you can reproduce this bug against a currently maintained version of Fedora please feel free to reopen this bug against that version. If you are unable to reopen this bug, please file a new report against the current release. If you experience problems, please add a comment to this bug. Thank you for reporting this bug and we are sorry it could not be fixed.