> I just finished upgrading Xubuntu 18.04 to 20.04 and all system sound
> is gone. According to pavucontrol, I only have Dummy Output and HDMI
> (which is not connected and reports as unplugged).
> My speakers are not detected, nor is the built in sound - speakers and
> I also keep getting a "System problem is reported" and I send the
> problem report, but I have no idea what it is.
> Where do I look first?
> I cannot do without sound on this laptop (HP 8740w). It was working
> perfectly before the upgrade.
Here's what lspci shows for audio - AFAICT there is no real HDMI
device on the machine: