Re: Quectel modem ceases working

Hi Dennis

Is this the same/similar issue I reported in Dec 24, where the pinephone modem 
stopped working between 2.12 and 2.13?

Thanks

Adam

On Wednesday, 10 September 2025 16:31:05 British Summer Time Denis Kenzior 
wrote:
> Hi Timo,
> 
> On 9/10/25 5:59 AM, Timo Ketola wrote:
> > Hi Denis,
> > 
> > Thanks for looking at this!
> > 
> > My further testing unsurprisingly shows that my hack does not really
> > work. list-modems looks better and the IF gets IP address but actual
> > traffic does not work.
> 
> Yeah, looks like the raw_ip setting isn't being reset back to what is
> expected.
> >> What kernel are you running?
> > 
> > 5.4.78 with RT patch.
> 
> Ugh.  I really have no desire to support kernels pre-5.15 when the
> passthrough capability was introduced.  I also have no hardware that is not
> 802.3 mode capable.  You can try the following patch though and see if
> things work again.
> 
> Regards,
> -Denis
> 
> diff --git a/plugins/gobi.c b/plugins/gobi.c
> index 52ead377de7f..1b77e5e32ed6 100644
> --- a/plugins/gobi.c
> +++ b/plugins/gobi.c
> @@ -665,10 +665,21 @@ static void set_data_format_cb(struct qmi_result
> *result, void *user_data)
>   	DBG("");
> 
>   	if (!qmi_result_set_error(result, NULL)) {
> +		struct qmi_wda_data_format actual;
> +
>   		if (!compare_data_format(data, result))
>   			goto done;
> 
>   		ofono_error("Setting Data Format had no effect");
> +
> +		if (!qmi_wda_parse_data_format(result, &actual) &&
> +				data->data_format == 
WDA_DATA_FORMAT_802_3 &&
> +				actual.ll_protocol ==
> +				QMI_WDA_DATA_LINK_PROTOCOL_RAW_IP) 
{
> +			ofono_warn("Modem seems to only work in raw-
ip mode");
> +			data->data_format = WDA_DATA_FORMAT_RAW_IP;
> +			goto done;
> +		}
>   	}
> 
>   	if (data->data_format == WDA_DATA_FORMAT_802_3)