** Description changed: - This bug is for tracking purpose. + [Impact] + This Dell machine has dual Realtek 4050 USB Codecs as front and rear codec, the front codec has speaker and headset, the rear codec has line-out audio jack. Without UCM, the pulseaudio can't detect this two usb audio codec and the audio can't work at all. + + [Fix] + Backport a upstream patch, the patch adds the front and rear profiles in the ucm, then pulseaudio will enable all audio devices in this machine. + + [Test] + booting with patched ucm, open the gnome-sound-setting, we could see usb speaker, usb headset and usb lineout, play sound to speaker, headset and lineout, all worked well, record sound via headset, it could record the sound correctly. + + [Where problems could occur] + This SRU adds the new ucm files to a folder, in theory it will not introduce regressions, but It adds a file USB-Audio.conf, it could make other ucm conf files in the USB-Audio folder fail to parse, and make the P620 and WD15/19's audio fail to work, but this possibility is very low, we already tested it and no regression found so far.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1956855 Title: [SRU] alsa-ucm-conf: Add Realtek 4050 USB Codec profile for a Dell machine To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/1956855/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
