RE: [PATCH] wifi: rtw88: disable ASPM and deep PS on ASUS TUF Gaming A15 FA506IH

[Ping-Ke Shih]

Rahul Kumar Rai via B4 Relay <devnull+learn.rahul.rai.gmail.com@xxxxxxxxxx> wrote:
> From: Rahul Kumar Rai <learn.rahul.rai@xxxxxxxxx>
> 
> The RTL8822CE on the ASUS TUF Gaming A15 FA506IH fails to return from
> PCIe low-power states across system suspend. The device is inaccessible
> on the way back to D0, so the MAC power-on sequence and the firmware
> handshake that follow it fail, and the driver gives up. Wi-Fi stays
> unavailable until the machine is powered off completely:
> 
>   rtw88_8822ce 0000:03:00.0: Unable to change power state from D3cold to D0, device inaccessible
>   rtw88_8822ce 0000:03:00.0: failed to poll offset=0x5 mask=0x2 value=0x0
>   rtw88_8822ce 0000:03:00.0: mac power on failed
>   rtw88_8822ce 0000:03:00.0: probe with driver rtw88_8822ce failed with error -114
> 
> Reads of the ASPM link-configuration register over DBI also time out
> around the same transitions.
> 
> This is not a one-off. It has been recurring on this machine for a long
> time. The kernel logs still on disk begin at 2026-07-20 and already
> contain six failed D-state transitions and three probe failures of this
> kind, and the problem was present well before that window.
> 
> This is the same platform ASPM inter-operability problem already handled
> for other machines through rtw_pci_quirks[], including the closely
> related ASUS TUF Gaming A15 FA506II. The FA506IH reports a different DMI
> board name, so that entry does not match. Disabling PCI ASPM and deep
> power save stops the failure on this model as well.
> 
>   DMI_SYS_VENDOR = ASUSTeK COMPUTER INC.
>   DMI_BOARD_NAME = FA506IH
> 
> Signed-off-by: Rahul Kumar Rai <learn.rahul.rai@xxxxxxxxx>

Acked-by: Ping-Ke Shih <pkshih@xxxxxxxxxxx>