Re: [PATCH v2] ata: ahci: Disallow LPM for Asus B550-F motherboard

Niklas Cassel
2025-06-17T12:30:57Z

Hello Mikko,

On Tue, Jun 17, 2025 at 03:15:48PM +0300, Mikko Korhonen wrote:
> Asus ROG STRIX B550-F GAMING (WI-FI) motherboard has problems on some
> SATA ports with at least one hard drive model (WDC WD20EFAX-68FB5N0)
> when LPM is enabled. Disabling LPM solves the issue.
>
> Fixes: 7627a0edef54 ("ata: ahci: Drop low power policy board type")
> Signed-off-by: Mikko Korhonen <mjkorhon@gmail.com>
> ---
> I think we might include the comment about the non working drive model, as
> we have tested only one model and in principle this could also be an
> interoperation issue. If one would need to enable LPM for the motherboard
> and happens to have a working hard drive model, he/she would know
> why we have made the patch in the first place.
>
> Changes since v1:
> - Fix typo and one line comment style issue.
>

I have already applied your patch:
https://git.kernel.org/pub/scm/linux/kernel/git/libata/linux.git/commit/?h=for-6.16-fixes&id=a7b3b77fd111d49f8e25624e4ea1046322a57baf

Kind regards,
Niklas