[BUG]FM350-GL频繁掉线

[858622025]

描述问题
H29K平台，使用的usb FM350-GL，qmodem已经是最新了，但是有时候还是不稳定，突然产生下面的报错，然后才能恢复。pdp_index按照之前的issue改成0了，但问题依旧存在

掉线的时候，还会有以下状态：sim卡miss后，很快变为模块已禁用

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[2026-04-11 09:47:06] modem_dial:at port response unexpected
[2026-04-11 09:47:11] modem_dial:at port response unexpected
[2026-04-11 09:47:16] modem_dial:at port response unexpected
[2026-04-11 09:47:21] modem_dial:at port response unexpected
[2026-04-11 09:47:21] modem_dial:dialing: vendor:fibocom; platform:mediatek; driver:rndis; apn:; command:AT+CGACT=1,0 pdp_index:0
[2026-04-11 09:47:21] modem_dial:dial_cmd: AT+CGACT=1,0; cgdcont_cmd: AT+CGDCONT=0,"IP",""; ppp_auth_cmd:
[2026-04-11 09:47:26] modem_dial:at port response unexpected
[2026-04-11 09:47:31] modem_dial:at port response unexpected
[2026-04-11 09:47:36] modem_dial:at port response unexpected
[2026-04-11 09:47:41] modem_dial:at port response unexpected
[2026-04-11 09:47:41] modem_dial:dialing: vendor:fibocom; platform:mediatek; driver:rndis; apn:; command:AT+CGACT=1,0 pdp_index:0
[2026-04-11 09:47:41] modem_dial:dial_cmd: AT+CGACT=1,0; cgdcont_cmd: AT+CGDCONT=0,"IP",""; ppp_auth_cmd:
[2026-04-11 09:47:46] modem_dial:at port response unexpected
[2026-04-11 09:47:51] modem_dial:at port response unexpected
[2026-04-11 09:47:56] modem_dial:at port response unexpected
[2026-04-11 09:48:01] modem_dial:at port response unexpected
[2026-04-11 09:48:01] modem_dial:dialing: vendor:fibocom; platform:mediatek; driver:rndis; apn:; command:AT+CGACT=1,0 pdp_index:0
[2026-04-11 09:48:01] modem_dial:dial_cmd: AT+CGACT=1,0; cgdcont_cmd: AT+CGDCONT=0,"IP",""; ppp_auth_cmd:
[2026-04-11 09:48:06] modem_dial:at port response unexpected
[2026-04-11 09:48:11] modem_dial:at port response unexpected
[2026-04-11 09:48:16] modem_dial:at port response unexpected
[2026-04-11 09:48:21] modem_dial:at port response unexpected
[2026-04-11 09:48:21] modem_dial:dialing: vendor:fibocom; platform:mediatek; driver:rndis; apn:; command:AT+CGACT=1,0 pdp_index:0
[2026-04-11 09:48:21] modem_dial:dial_cmd: AT+CGACT=1,0; cgdcont_cmd: AT+CGDCONT=0,"IP",""; ppp_auth_cmd:
[2026-04-11 09:48:26] modem_dial:at port response unexpected
[2026-04-11 09:48:31] modem_dial:at port response unexpected
[2026-04-11 09:48:36] modem_dial:at port response unexpected
[2026-04-11 09:48:41] modem_dial:at port response unexpected
[2026-04-11 09:48:42] modem_dial:dialing: vendor:fibocom; platform:mediatek; driver:rndis; apn:; command:AT+CGACT=1,0 pdp_index:0
[2026-04-11 09:48:42] modem_dial:dial_cmd: AT+CGACT=1,0; cgdcont_cmd: AT+CGDCONT=0,"IP",""; ppp_auth_cmd:
[2026-04-11 09:48:47] modem_dial:ip changed from ,10.111.39.94 to ,10.234.36.42
[2026-04-11 09:48:47] modem_dial:ip_change_fm350
[2026-04-11 09:48:47] modem_dial:set interface 4_1 to 10.234.36.42