Re: [PATCH] PCI: Disable async suspend for AMD rev 0x62 ACP and HD Audio

[David Glushkov]

(Resending in plain text, my previous mail was rejected by the lists
because of an HTML part.)

Hi Mario, Bjorn,

I'm the author of the A9WJG subsystem-ID quirk that Diogo mentioned in his
commit message, so a data point from the MSI side.

I hit the same problem on an MSI Raider A18 HX A9WJG (MS-182L): the ACP is
rev 0x62 (1022:15e2 at 6a:00.5) with the Ryzen HD Audio controller
(1022:15e3) at 6a:00.6, and HD Audio stops working after resume, same as
Diogo describes. This is on the CachyOS 7.3 kernel.

Regarding the BIOS question: I'm on the latest BIOS for this model,
E182LAMS.31B (dated 05/26/2026), so a BIOS update isn't available as a
workaround here either. That makes at least two different vendors (ASUS
and MSI) with the latest firmware still affected.

Given that, a generic fix keyed on the ACP revision, as in Diogo's patch,
looks preferable to per-board subsystem-ID quirks. I'm happy to test any
follow-up version on this machine.

Thanks,
David