From: JH <jupiter.hce@gmail.com>
To: linux-usb@vger.kernel.org
Subject: Failed to connect to 4G modem
Date: Tue, 17 Sep 2019 21:29:34 +1000 [thread overview]
Message-ID: <CAA=hcWRF00syz8jB1+qdy1pFA7Wk_B=1Z_DT5vYuQrzFKhtZbw@mail.gmail.com> (raw)
Hi,
I am running kernel LTS 4.19 in an i.MX6 board with a 4G LTE modem, it
continually displayed following messages in a serial port tried and
failed to connect to LTE modem, are there any problems in kernel 4.19
LTS to support usb qmi protocol and LTE modem connection?
I did try the kernel version 5.1, it can connect to the modem, but
failed in couple of hours or days, when it disconnected, it got the
same following messages.
Are there serious problems in kernel to support usb qmi LTE modem
communication and connection?
[ 43.837243] option1 ttyUSB0: GSM modem (1-port) converter now disconnected f0
[ 43.882941] option 1-1:1.0: device disconnected
[ 43.942788] option1 ttyUSB1: GSM modem (1-port) converter now disconnected f1
[ 44.001445] option 1-1:1.2: device disconnected
[ 44.011575] qmi_wwan 1-1:1.3: nonzero urb status received: -71
[ 44.017461] qmi_wwan 1-1:1.3: wdm_int_callback - 0 bytes
[ 44.022801] qmi_wwan 1-1:1.3: wdm_int_callback - usb_submit_urb failed with 9
[ 44.059958] qmi_wwan 1-1:1.3 wwan0: unregister 'qmi_wwan' usb-ci_hdrc.1-1, We
[ 47.675604] usb 1-1: new high-speed USB device number 5 using ci_hdrc
[ 47.905246] usb 1-1: New USB device found, idVendor=05c6, idProduct=90b2, bc0
[ 47.913732] usb 1-1: New USB device strings: Mfr=3, Product=2, SerialNumber=4
[ 47.921099] usb 1-1: Product: Qualcomm CDMA Technologies MSM
[ 47.927087] usb 1-1: Manufacturer: Qualcomm, Incorporated
[ 47.932746] usb 1-1: SerialNumber: 5ff10299
[ 47.964528] option 1-1:1.0: GSM modem (1-port) converter detected
[ 47.989484] usb 1-1: GSM modem (1-port) converter now attached to ttyUSB0
[ 48.014760] option 1-1:1.2: GSM modem (1-port) converter detected
[ 48.026996] usb 1-1: GSM modem (1-port) converter now attached to ttyUSB1
[ 48.048810] qmi_wwan 1-1:1.3: cdc-wdm0: USB WDM device
[ 48.082751] qmi_wwan 1-1:1.3 wwan0: register 'qmi_wwan' at usb-ci_hdrc.1-1, 8
[ 51.581595] usb 1-1: USB disconnect, device number 5
[ 51.613737] option1 ttyUSB0: GSM modem (1-port) converter now disconnected f0
[ 51.644564] option 1-1:1.0: device disconnected
[ 51.713919] option1 ttyUSB1: GSM modem (1-port) converter now disconnected f1
[ 51.771139] option 1-1:1.2: device disconnected
Thank you.
Kind regards,
- jh
next reply other threads:[~2019-09-17 11:29 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-17 11:29 JH [this message]
2019-09-17 12:02 ` Failed to connect to 4G modem Greg KH
2019-09-17 21:38 ` JH
2019-09-18 1:43 ` Lars Melin
2019-09-18 5:47 ` Greg KH
2019-09-19 7:37 ` Bjørn Mork
2019-09-19 11:17 ` JH
2019-09-20 22:10 ` JH
2019-09-21 4:45 ` Greg KH
2019-09-22 22:17 ` JH
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