The Dell XPS 9530, like previous XPS laptops like the 9520 and 9510 have dual speakers in each channel.
If the ALC289_FIXUP_DUAL_SPK flag is not set in sound/pci/hda/patch_realtek.c only the tweeter will work and therefore make the sound quality terrible.
This patch has not been tested but is derived from a previous patch attempt from a different user called Pentracillin which was rejected.
$ diff -r -up a b diff -r -up a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c --- a/sound/pci/hda/patch_realtek.c 2023-10-07 22:16:36.129618972 +1100 +++ b/sound/pci/hda/patch_realtek.c 2023-10-07 22:16:52.645258218 +1100 @@ -9412,6 +9412,7 @@ static const struct snd_pci_quirk alc269 SND_PCI_QUIRK(0x1028, 0x0b1a, "Dell Precision 5570", ALC289_FIXUP_DUAL_SPK), SND_PCI_QUIRK(0x1028, 0x0b37, "Dell Inspiron 16 Plus 7620 2-in-1", ALC295_FIXUP_DELL_INSPIRON_TOP_SPEAKERS), SND_PCI_QUIRK(0x1028, 0x0b71, "Dell Inspiron 16 Plus 7620", ALC295_FIXUP_DELL_INSPIRON_TOP_SPEAKERS), + SND_PCI_QUIRK(0x1028, 0x0beb, "Dell XPS 15 9530", ALC289_FIXUP_DUAL_SPK), SND_PCI_QUIRK(0x1028, 0x0c03, "Dell Precision 5340", ALC269_FIXUP_DELL4_MIC_NO_PRESENCE), SND_PCI_QUIRK(0x1028, 0x0c19, "Dell Precision 3340", ALC236_FIXUP_DELL_DUAL_CODECS), SND_PCI_QUIRK(0x1028, 0x0c1a, "Dell Precision 3340", ALC236_FIXUP_DELL_DUAL_CODECS),
Brett Worth