Re: [PATCH] wifi: rtw88: disable ASPM for Lenovo IdeaPad S340-14IWL

On 20/08/2026 13:16, Ata İlhan Köktürk wrote:
> The Lenovo IdeaPad S340-14IWL (DMI product name "81N4") experiences
> severe connectivity issues with the rtw88 PCIe wireless card when
> ASPM is enabled. Reported symptoms include frequent disconnections,
> kernel panics, and the driver failing to load.
> 
> The issue can be worked around by either adding pci=noaspm to the
> kernel command line or by reloading the driver via modprobe. Add a
> DMI quirk to disable ASPM automatically for this device.
> 
> Signed-off-by: Ata İlhan Köktürk <[email protected]>
> ---
>  drivers/net/wireless/realtek/rtw88/pci.c | 9 +++++++++
>  1 file changed, 9 insertions(+)
> 
> diff --git a/drivers/net/wireless/realtek/rtw88/pci.c b/drivers/net/wireless/realtek/rtw88/pci.c
> index a30467228..9df8954d8 100644
> --- a/drivers/net/wireless/realtek/rtw88/pci.c
> +++ b/drivers/net/wireless/realtek/rtw88/pci.c
> @@ -1779,6 +1779,15 @@ static const struct dmi_system_id rtw_pci_quirks[] = {
>  		.driver_data = (void *)(BIT(QUIRK_DIS_CAP_PCI_ASPM) |
>  					BIT(QUIRK_DIS_CAP_LPS_DEEP)),
>  	},
> +	{
> +		.callback = rtw_pci_disable_caps,
> +		.ident = "Lenovo IdeaPad S340-14IWL",
> +		.matches = {
> +			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
> +			DMI_MATCH(DMI_PRODUCT_NAME, "81N4"),
> +		},
> +		.driver_data = (void *)(BIT(QUIRK_DIS_CAP_PCI_ASPM)),
> +	},
>  	{}
>  };
>  

By the way, what wifi chip do you have? It would be good to mention
that in the summary.