gnome – Accidentally uninstalled GUI when removing Pipewire

I was having sound issues (previous question), and after a lot of reading heard of the much-touted PipeWire.

I followed this helpful guide to install PipeWire. This only made things worse, as now even my headphone output was unreliable and usual diagnostic screens only said it was outputting to PipeWire.

I followed the same helpful guide to uninstall PipeWire and revert to alsa-pulse. This resulted in completely uninstalling gnome, because obviously.

This altered the entire boot process, so that I can no longer log into my computer normally (which requires a yubikey).

I have reinstalled everything (including pipewire, to be safe), but when it tries to authenticate, it hangs indefinitely. Switching back to the terminal, I can log in (the terminal can read the yubikey), interrupt the hanging process and launch a GUI with startx.

Is there any way to fix this, to go back to the usual boot process? All of the GUI parts are reinstalled, the issue is in the login stage when reading from the key.

Output is hard to retrieve, since all the important details are output prior to launching X.

Here is the output, the best I can transcribe, at the relevant failpoint

snd_hda_codec_realtek ehdaudio0D0: didn't find PCM for DAI Digital Codec DAI
snd-hda-codec_realtek ehdaudio0D0: ASoC: error at snd_soc_dai_startup  on Digital Codec DAI: -22
 Digital Playback and Capture: soc_pcm_open() failed (-22)
 HDA Digital: ASoC: dpcm_be_dai_startup() failed at Digital Playback and Capture (-22)
 HDA Digital dpcm_fe_dai_startup() failed (-22)
snd_hda_codec_realtek ehdaudio0D0: didn't find PCM for DAI Digital Codec DAI
snd_hda_codec_realtek ehdaudio0D0: ASoC: error at snd_soc_dai_startup on Digital Codec DAI: -22
 Digital Playback and Capture: soc_pcm_open() failed (-22)
 HDA Digital: ASoC: dpcm_be_dai_startup() failed at Digital Playback and Capture (-22)
 HDA Digital: dpcm_fe_dai_startup() failed (-22)

It will sit there indefinitely until I press enter from the command line, at which point I can use the computer through the command line, or type startx to launch X server.