I replaced my graphics card with an Nvidia GT620. However, when I rebooted with the new card, my onboard Intel audio device disappeared completely - does not even appear in lshw.

Now the only audio output is the HDMI audio on the Nvidia card, which is annoying as my monitor has speakers but no headphone jack.

How can I make the HDMI audio device go away, and get back my onboard audio?

Sound-related stanza in lshw:

       *-multimedia

            description: Audio device

            product: GF108 High Definition Audio Controller

            vendor: NVIDIA Corporation

            physical id: 0.1

            bus info: pci@0000:02:00.1

            version: a1

            width: 32 bits

            clock: 33MHz

            capabilities: pm msi pciexpress bus_master cap_list

            configuration: driver=snd_hda_intel latency=0

            resources: irq:60 memory:fccfc000-fccfffff

Output of "aplay -l":

**** List of PLAYBACK Hardware Devices ****

card 0: NVidia [HDA NVidia], device 3: HDMI 0 [HDMI 0]

  Subdevices: 1/1

  Subdevice #0: subdevice #0

card 0: NVidia [HDA NVidia], device 7: HDMI 0 [HDMI 0]

  Subdevices: 1/1

  Subdevice #0: subdevice #0

card 0: NVidia [HDA NVidia], device 8: HDMI 0 [HDMI 0]

  Subdevices: 1/1

  Subdevice #0: subdevice #0

card 0: NVidia [HDA NVidia], device 9: HDMI 0 [HDMI 0]

  Subdevices: 0/1

  Subdevice #0: subdevice #0

Output of sudo lspci | grep Aud

02:00.1 Audio device: NVIDIA Corporation GF108 High Definition Audio Controller (rev a1)