I'll need some help troubleshooting this issue. I had upgraded from 9 to 10, Buster, and found that the audio was not working after reboot. I use the onboard soundcard which is a Realtek driver for audio. After reading other threads I attempted using the HDMI output on my video card since 'aplay -l' could find the HDMI audio output. HDMI audio works but I would prefer to use my speakers.
Here are the screenshots. First with the HDMI cable plugged in.

Second, without the HDMI cable plugged in.

lsmod can see the Realtek audio
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van-brain@brain:~$ lsmod | grep snd
snd_hrtimer 16384 1
snd_seq 81920 1
snd_seq_device 16384 1 snd_seq
snd_hda_codec_realtek 122880 1
snd_hda_codec_hdmi 57344 1
snd_hda_codec_generic 86016 1 snd_hda_codec_realtek
snd_hda_intel 45056 9
snd_hda_codec 151552 4 snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec_realtek
snd_hda_core 94208 5 snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec,snd_hda_codec_realtek
snd_hwdep 16384 1 snd_hda_codec
snd_pcm 114688 6 snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec,snd_hda_core
snd_timer 36864 4 snd_seq,snd_hrtimer,snd_pcm
snd 94208 26 snd_hda_codec_generic,snd_seq,snd_seq_device,snd_hda_codec_hdmi,snd_hwdep,snd_hda_intel,snd_hda_codec,snd_hda_codec_realtek,snd_timer,snd_pcm
soundcore 16384 1 snd
van-brain@brain:~$ lsmod | grep realtek
snd_hda_codec_realtek 122880 1
snd_hda_codec_generic 86016 1 snd_hda_codec_realtek
snd_hda_codec 151552 4 snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec_realtek
snd_hda_core 94208 5 snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec,snd_hda_codec_realtek
snd 94208 26 snd_hda_codec_generic,snd_seq,snd_seq_device,snd_hda_codec_hdmi,snd_hwdep,snd_hda_intel,snd_hda_codec,snd_hda_codec_realtek,snd_timer,snd_pcm
'aplay -l' just lists the HDMI as audio output
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van-brain@brain:~$ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: SB [HDA ATI SB], device 0: ALC889 Analog [ALC889 Analog]
Subdevices: 0/1
Subdevice #0: subdevice #0
card 0: SB [HDA ATI SB], device 1: ALC889 Digital [ALC889 Digital]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: HDMI [HDA ATI HDMI], device 3: HDMI 0 [HDMI 0]
Subdevices: 0/1
Subdevice #0: subdevice #0
card 1: HDMI [HDA ATI HDMI], device 7: HDMI 1 [HDMI 1]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: HDMI [HDA ATI HDMI], device 8: HDMI 2 [HDMI 2]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: HDMI [HDA ATI HDMI], device 9: HDMI 3 [HDMI 3]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: HDMI [HDA ATI HDMI], device 10: HDMI 4 [HDMI 4]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: HDMI [HDA ATI HDMI], device 11: HDMI 5 [HDMI 5]
Subdevices: 1/1
Subdevice #0: subdevice #0
How can I troubleshoot this further and what other commands should I dump here? Thanks in advanced!