Ok, I'm just a user and don't have access to that mailing list but what I CAN say, is, that my affected system doesn't run radeon or nouveau driver but amdgpu.
Takashi Iwai wrote in November 2019 'amdgpu driver already got the audio-component binding recently, so this problem shouldn't be triggered' (https://mailman.alsa-project.org/pipermail/alsa-devel/2019-November/158350.html) I've no Idea what he exactly means with that because amdgpu driver with recent ubuntu kernels from mid of January 2020 is definitely affected by this issue. In the other bugreport two users already tested your kernels and provided some dmesg logs. So I think they would be happy to help you with further investigations. I for my self didn't install any testing kernels and also have no clue how to 'unload / reload the HD-audio driver' as Takashi Iwai mentioned here: https://mailman.alsa- project.org/pipermail/alsa-devel/2019-November/158707.html So I think you should better place your call for help over there: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1834771 Thank you very much for your attention and sorry I couldn't be more helpful ... -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1827967 Title: There are 4 HDMI/Displayport audio output listed in sound setting without attach any HDMI/DP monitor To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/1827967/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
