Okay, so my "solution" to this problem was to just enable short-term distribution support in the Software Updater, and to update to Ubuntu 20.10, the kernel is now ' 5.8.0-29-generic x86_64 ' and it actually recognizes the whole 5.1 audio system instead of just stereo audio.
Although this might not be the ideal solution for everyone, at least it solved _this_ issue. I'm kinda worried, though, that the underlying cause for this (as reported by so many) will remain unsolved. Oh well, the only way is forward. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-signed in Ubuntu. https://bugs.launchpad.net/bugs/1903848 Title: Latest kernel update to "5.4.0-53-generic" = Internal audio, USB webcam no longer working Status in linux-signed package in Ubuntu: New Bug description: This seems to be a persistent problem that has been around a few kernel versions earlier (see i.e.: https://bugs.launchpad.net/ubuntu/+source/linux-signed/+bug/1881757 ). After yesterday's apt update to 5.4.0-53-generic (amd64), my USB webcam (Logitech c930) as well as my internal audio (Intel HDA) stopped working altogether. All I get is a dummy audio output from the list of devices, and the webcam is not working either. I can still see my pre-existing audio devices with -------------------------------------------- 'lspci | grep Audio': -------------------------------------------- 00:1b.0 Audio device: Intel Corporation 5 Series/3400 Series Chipset High Definition Audio (rev 05) 01:00.1 Audio device: NVIDIA Corporation GP104 High Definition Audio Controller (rev a1) -------------------------------------------- -------------------------------------------- 'inxi -SA' reports this: -------------------------------------------- Audio: Device-1: Intel 5 Series/3400 Series High Definition Audio driver: N/A Device-2: NVIDIA GP104 High Definition Audio driver: N/A -------------------------------------------- (The #2 NVIDIA one being the video card's audio option, which I don't use, but it's not listed as being available either.) However, i.e. 'pacmd -list-cards' says: -------------------------------------------- 0 card(s) available. -------------------------------------------- There's been plenty of similar instances of this error in 20.04.x and it has been tried to have been solved in threads such as: #1 https://askubuntu.com/questions/1258510/only-dummy-output-sound-in- ubuntu-20-04-after-reboot-broken-driver-modul #2 https://www.linuxuprising.com/2018/06/fix-no-sound-dummy-output- issue-in.html From #2, if I try: -------------------------------------------- 'lsmod | grep snd_hda_intel' (That displays no results at all.) -------------------------------------------- However, this one does bring results: 'lspci -nnk | grep -A2 Audio' -------------------------------------------- 00:1b.0 Audio device [0403]: Intel Corporation 5 Series/3400 Series Chipset High Definition Audio [8086:3b56] (rev 05) DeviceName: Intel(R) High Definition Audio Device Subsystem: Intel Corporation 5 Series/3400 Series Chipset High Definition Audio [8086:0034] Kernel modules: snd_hda_intel 00:1c.0 PCI bridge [0604]: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 1 [8086:3b42] (rev 05) -- 01:00.1 Audio device [0403]: NVIDIA Corporation GP104 High Definition Audio Controller [10de:10f0] (rev a1) Subsystem: NVIDIA Corporation GP104 High Definition Audio Controller [10de:11a3] Kernel modules: snd_hda_intel -------------------------------------------- I've been trying all the available fixes at the forementioned url #2 to no avail, and also been trying to revert them, to no avail. I've been trying to run ALSA's configuration and it seems that the ALSA modules are not loading. Also been trying out various fix proposals from people who've had the same issue, but no luck on that frontier. Anyway, now I'm stuck with no webcam, no audio. Any suggestions? Thanks. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-signed/+bug/1903848/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
