Hi,
I have an internal device "HP lt2523 Mobile Broadband Device" on my "HP Elitebook 2570p".
This WWAN(LTE) module was working fine until last week. but after my distro pushed some updates its character has changed and as a result i am unable to make a successful data connection any longer.
Please find information of my setup ... things that could help you to provide a solution.
Going by the "Modem Manager GUI" application turns out the time that data used to connect successfully the device port was "ttyUSB" ...
But currently the same application lists this device's port as "cdc-wdm0" ... turns out this isn't let me make a successful data connection through this device anymore.
Please find snapshot of what i have stated ...
THIS STATE DOES NOT LET ME CONNECT TO DATA !
THIS STATE LETS ME CONNECT TO DATA SUCCESSFULLY !!!
Please find other outputs for my device ...
Code:
usb-devices
T: Bus=01 Lev=02 Prnt=02 Port=04 Cnt=02 Dev#= 4 Spd=480 MxCh= 0
D: Ver= 2.00 Cls=ef(misc ) Sub=02 Prot=01 MxPS=64 #Cfgs= 1
P: Vendor=03f0 ProdID=421d Rev=00.00
S: Manufacturer=Novatel Wireless, Inc.
S: Product=HP lt2523 Mobile Broadband Device
S: SerialNumber=359789040033051
C: #Ifs= 7 Cfg#= 1 Atr=e0 MxPwr=500mA
I: If#= 0 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=option
I: If#= 1 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=option
I: If#= 2 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=option
I: If#= 3 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=option
I: If#= 4 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=option
I: If#= 6 Alt= 0 #EPs= 1 Cls=02(commc) Sub=06 Prot=00 Driver=qmi_wwan
I: If#= 7 Alt= 1 #EPs= 2 Cls=0a(data ) Sub=00 Prot=00 Driver=qmi_wwan
the command "mmcli -L" and its output
when its bound as "cdc-wdm0"
Code:
Found 1 modems:
/org/freedesktop/ModemManager1/Modem/0 [Novatel Wireless Incorporated] 4051
when its bound as "ttyUSB0"
Code:
Found 1 modems:
/org/freedesktop/ModemManager1/Modem/0 [Novatel Wireless Incorporated] E371 WWAN
the command "mmcli --simple-status -m /org/freedesktop/ModemManager1/Modem/0" and its output ...
when its bound as "cdc-wdm0"
Code:
/org/freedesktop/ModemManager1/Modem/0
-------------------------
Status | state: 'registered'
| signal quality: '76' (recent)
| bands: 'egsm, dcs, pcs, g850, utran-1, utran-5, utran-2'
| access tech: 'umts'
-------------------------
3GPP | registration: 'home'
| operator code: '40471'
| operator name: 'BSNL MOBILE'
| subscription: 'unknown'
when its bound as "ttyUSB0"
Code:
/org/freedesktop/ModemManager1/Modem/0
-------------------------
Status | state: 'connected'
| signal quality: '80' (recent)
| bands: 'unknown'
| access tech: 'umts'
-------------------------
3GPP | registration: 'home'
| operator code: '40471'
| operator name: 'BSNL MOBILE'
| subscription: 'unknown'
the command "nmcli d" and its output ...
when its bound as "cdc-wdm0"
Code:
DEVICE TYPE STATE CONNECTION
cdc-wdm0 gsm disconnected --
wlo1 wifi disconnected --
enp0s25 ethernet unavailable --
vmnet1 ethernet unmanaged --
vmnet8 ethernet unmanaged --
lo loopback unmanaged --
when its bound as "ttyUSB0"
Code:
DEVICE TYPE STATE CONNECTION
ttyUSB0 gsm connected BSNL/CellOne
ppp0 ppp disconnected --
wlo1 wifi disconnected --
enp0s25 ethernet unavailable --
vmnet1 ethernet unmanaged --
vmnet8 ethernet unmanaged --
lo loopback unmanaged --
the command "ls -al /dev/serial/by-id" and its output ...
when its bound as "cdc-wdm0"
Code:
drwxr-xr-x 2 root root 140 Jan 8 20:21 .
drwxr-xr-x 4 root root 80 Jan 8 20:21 ..
lrwxrwxrwx 1 root root 13 Jan 8 20:21 usb-Novatel_Wireless__Inc._HP_lt2523_Mobile_Broadband_Device_359789040033051-if00-port0 -> ../../ttyUSB0
lrwxrwxrwx 1 root root 13 Jan 8 20:21 usb-Novatel_Wireless__Inc._HP_lt2523_Mobile_Broadband_Device_359789040033051-if01-port0 -> ../../ttyUSB1
lrwxrwxrwx 1 root root 13 Jan 8 20:21 usb-Novatel_Wireless__Inc._HP_lt2523_Mobile_Broadband_Device_359789040033051-if02-port0 -> ../../ttyUSB2
lrwxrwxrwx 1 root root 13 Jan 8 20:21 usb-Novatel_Wireless__Inc._HP_lt2523_Mobile_Broadband_Device_359789040033051-if03-port0 -> ../../ttyUSB3
lrwxrwxrwx 1 root root 13 Jan 8 20:21 usb-Novatel_Wireless__Inc._HP_lt2523_Mobile_Broadband_Device_359789040033051-if04-port0 -> ../../ttyUSB4
when its bound as "ttyUSB0"
Code:
total 0
drwxr-xr-x 2 root root 140 Jan 8 20:57 .
drwxr-xr-x 4 root root 80 Jan 8 20:57 ..
lrwxrwxrwx 1 root root 13 Jan 8 20:57 usb-Novatel_Wireless__Inc._HP_lt2523_Mobile_Broadband_Device_359789040033051-if00-port0 -> ../../ttyUSB0
lrwxrwxrwx 1 root root 13 Jan 8 20:57 usb-Novatel_Wireless__Inc._HP_lt2523_Mobile_Broadband_Device_359789040033051-if01-port0 -> ../../ttyUSB1
lrwxrwxrwx 1 root root 13 Jan 8 20:57 usb-Novatel_Wireless__Inc._HP_lt2523_Mobile_Broadband_Device_359789040033051-if02-port0 -> ../../ttyUSB2
lrwxrwxrwx 1 root root 13 Jan 8 20:57 usb-Novatel_Wireless__Inc._HP_lt2523_Mobile_Broadband_Device_359789040033051-if03-port0 -> ../../ttyUSB3
lrwxrwxrwx 1 root root 13 Jan 8 20:57 usb-Novatel_Wireless__Inc._HP_lt2523_Mobile_Broadband_Device_359789040033051-if04-port0 -> ../../ttyUSB4
the command "ls -l /sys/bus/usb/drivers/cdc_wdm/" and its output ...
when its bound as "cdc-wdm0"
Code:
total 0
--w------- 1 root root 4096 Jan 8 20:24 bind
lrwxrwxrwx 1 root root 0 Jan 8 20:24 module -> ../../../../module/cdc_wdm
-rw-r--r-- 1 root root 4096 Jan 8 20:24 new_id
-rw-r--r-- 1 root root 4096 Jan 8 20:24 remove_id
--w------- 1 root root 4096 Jan 8 20:24 uevent
--w------- 1 root root 4096 Jan 8 20:24 unbind
when its bound as "ttyUSB0"
Code:
total 0
--w------- 1 root root 4096 Jan 8 21:28 bind
lrwxrwxrwx 1 root root 0 Jan 8 21:28 module -> ../../../../module/cdc_wdm
-rw-r--r-- 1 root root 4096 Jan 8 21:28 new_id
-rw-r--r-- 1 root root 4096 Jan 8 21:28 remove_id
--w------- 1 root root 4096 Jan 8 20:57 uevent
--w------- 1 root root 4096 Jan 8 21:28 unbind
the command "ls -l /sys/bus/usb/drivers/qmi_wwan/" and its output ...
when its bound as "cdc-wdm0"
Code:
total 0
lrwxrwxrwx 1 root root 0 Jan 8 20:28 1-1.5:1.6 -> ../../../../devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.5/1-1.5:1.6
lrwxrwxrwx 1 root root 0 Jan 8 20:28 1-1.5:1.7 -> ../../../../devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.5/1-1.5:1.7
--w------- 1 root root 4096 Jan 8 20:28 bind
lrwxrwxrwx 1 root root 0 Jan 8 20:28 module -> ../../../../module/qmi_wwan
-rw-r--r-- 1 root root 4096 Jan 8 20:28 new_id
-rw-r--r-- 1 root root 4096 Jan 8 20:28 remove_id
--w------- 1 root root 4096 Jan 8 20:21 uevent
--w------- 1 root root 4096 Jan 8 20:28 unbind
when its bound as "ttyUSB0"
Code:
total 0
lrwxrwxrwx 1 root root 0 Jan 8 21:30 1-1.5:1.6 -> ../../../../devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.5/1-1.5:1.6
lrwxrwxrwx 1 root root 0 Jan 8 21:30 1-1.5:1.7 -> ../../../../devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.5/1-1.5:1.7
--w------- 1 root root 4096 Jan 8 21:30 bind
lrwxrwxrwx 1 root root 0 Jan 8 21:30 module -> ../../../../module/qmi_wwan
-rw-r--r-- 1 root root 4096 Jan 8 21:30 new_id
-rw-r--r-- 1 root root 4096 Jan 8 21:30 remove_id
--w------- 1 root root 4096 Jan 8 20:57 uevent
--w------- 1 root root 4096 Jan 8 21:30 unbind
