Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: linux-signed (Ubuntu)
Status: New => Confirmed
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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:
Confirmed
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.
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