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The Advanced Linux Sound Architecture (ALSA) - library
Intel TGL HDMI/DP codec provides 9 pins (Linux kernel, 9a11ba7388f16: ALSA: hda: hdmi - add Tigerlake support), and with the DP MST enabled, the linux kernel will build 11 output devices (3, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16), and current alsa-lib only maps the first 8 output devices, if users plug the HDMI/DP monitor to the last 3 ports, the users will not see the output device from pulseaudio or gnome. We have experienced this issue on a dell TGL machine with a dock, we plugged 2 HDMP/DP monitors on the dock, but we could only see 1 HDMI/DP output device from pulseaudio or gnome, through investigation, we found one monitor is plugged in the 2nd port from last. Signed-off-by: Hui Wang <hui.wang@canonical.com> BugLink: https://github.com/alsa-project/alsa-lib/pull/118 Signed-off-by: Takashi Iwai <tiwai@suse.de> |
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alsa-lib
Advanced Linux Sound Architecture (ALSA) project
The alsa-lib is a library to interface with ALSA in the Linux kernel and virtual devices using a plugin system.
The up-to-date reference generated from sources can be accessed here:
http://www.alsa-project.org/alsa-doc/alsa-lib/
You may give a look for more information about the ALSA project to URL http://www.alsa-project.org.
Submitting patches
The preferred way to submit patches is by sending them by email to the alsa-devel mailing list. Sending mail to the list requires subscription, subscribe here: https://mailman.alsa-project.org/mailman/listinfo/alsa-devel
Add Takashi Iwai <tiwai@suse.de> and/or Jaroslav Kysela <perex@perex.cz> to
Cc so that your patch won't be missed.
Patches are also accepted as GitHub pull requests.