Red Hat Bugzilla – Bug 1315253
Sound output does not switch when connecting external HDMI TVs
Last modified: 2016-12-20 14:16:58 EST
Description of problem:
When I plug in an external TV through HDMI or similar, the display is automatically extended to that TV automatically. However, the sound output is kept and sound is output through the internal speakers. To use the external TV speakers, I have to go through sound settings and change it manually, every time. Even more confusing is that after disconnecting the TV, I have to go through the sound settings again to switch the output back to the built in speakers.
If it is not possible to detect whether an external monitor/TV can accept sound input, it would be nice to save sound output settings the same way the setup (cloning/positioning) of multiple monitor setup is saved across connects.
Steps to Reproduce:
1. Connect computer with external TV through a HDMI cable or similar.
2. The display output is automatically duplicated, but the sound output is not.
3. Go to Preferences => Sound, where the sound output is "built in audio". Select the HDMI sound output. The sound now goes through the TV.
4. Disconnect the TV. The display settings resets, but that there is no sound from the built in speakers, presumably because something still thinks it should output sound through HDMI. You have to go through Preferences => Sound again and reset the output to the "built in audio" to regain sound.
Sound output must be changed manually, when connecting an external TV and also when disconnecting it.
In a perfect world, it would be nice if the sound output moved to the TV when plugged in, and back when not.
As a second option, I'd like the sound settings saved per monitor in the same way the display cloning/positioning is saved. That way, I'll only have to change the sound output once, and then the system knows that I'd like sound routed through HDMI when that particular monitor is connected.
As the third option, it should be possible to detect that the external monitor is not connected anymore and switch back to built in sound when the cable is disconnected. No sound after disconnect is confusing, especially when you then go to sound settings and it is obvious that there is only one output possible. That way, only one manual switch is necessary.
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