Dear James,
Am 27.10.23 um 18:43 schrieb James Dutton:
There is a laptop that fails to output sound from the laptop speakers but works with headphones. After considerable diagnostics I have made some progress: The User followed these steps: 1) Plug the headphones in. 2) speaker-test -c2 -twav -Dplughw:CARD=1,DEV=0 3) you should hear sound through the headphones. If not, try speaker-test -c2 -twav You need to find a combination of the speaker-test command that outputs sound through the headphones. 4) alsamixer -c1 This will bring up a mixer in the terminal You use the cursor/arrow keys to move left and right. You use the up/down to increase/decrease the volume You use "M" to mute/unmute. 5) increase the volume and unmute all of the following: Master, Headphone, Speaker You can mute/unmute the headphones to check you are controlling it correctly. 6) The aim is to see if you can hear sound from both the headphones and the laptop speakers at the same time. The result is one actually gets sound out of the laptop speakers at step 6. So, this is a bug with the control of the EAPD on this laptop. Essentially, it looks like the laptop uses the same power amp for both headphones and speakers. So the headphone EAPD control switches the EAPD on for both headphones and speakers, and the speaker EAPD control does nothing. Is there an existing QUIRK that handles this scenario, or will I need to work on a new quirk? Codec: Realtek ALC269VC Address: 0 AFG Function Id: 0x1 (unsol 1) Vendor Id: 0x10ec0269 Subsystem Id: 0x10f70300 Revision Id: 0x100202
Thank you for the analysis. I do not know anything about the code, but please also share the output of `alsa-info.sh` [1].
(You can also create a bug report at the Linux Kernel Bugzilla, attach the logs there, and reference the bug report URL here.
Kind regards, Paul [1]: https://alsa-project.org/alsa-info.sh _______________________________________________ Alsa-user mailing list Alsa-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/alsa-user
