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Lost tethering after upgrading to Bullseye

Linux Kernel, Network, and Services configuration.
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LoopBack
Posts: 10
Joined: 2019-11-10 16:33

Lost tethering after upgrading to Bullseye

#1 Post by LoopBack »

I have just upgraded to 11.2 from 10.7 and cannot now get a tethered USB connection to my mobile phone.
Previously, ifconfig would show 3 entries: enp0s25, lo and ppp0, with ppp0 being the phone; now all that ifconfig shows is the first two.
The response to the phone, now, of dmesg is:-

Code: Select all

[ 1977.118815] usb 8-5: new high-speed USB device number 4 using ehci-pci
[ 1977.277412] usb 8-5: New USB device found, idVendor=04e8, idProduct=689e, bcdDevice= 4.00
[ 1977.277418] usb 8-5: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 1977.277420] usb 8-5: Product: Samsung Android USB Device
[ 1977.277423] usb 8-5: Manufacturer: SAMSUNG Electronics Co., Ltd.
[ 1977.277426] usb 8-5: SerialNumber: I55004741e82e
[ 1977.280448] usb-storage 8-5:1.3: USB Mass Storage device detected
[ 1977.280613] scsi host4: usb-storage 8-5:1.3
[ 1977.561903] cdc_acm 8-5:1.0: ttyACM0: USB ACM device
[ 1977.564860] usbcore: registered new interface driver cdc_acm
[ 1977.564862] cdc_acm: USB Abstract Control Model driver for USB modems and ISDN adapters
[ 1978.307611] scsi 4:0:0:0: Direct-Access     SAMSUNG  GT-I5500 Card    0000 PQ: 0 ANSI: 2
[ 1978.310088] sd 4:0:0:0: Attached scsi generic sg2 type 0
[ 1978.339597] sd 4:0:0:0: [sdb] Attached SCSI removable disk
but I don't know whether that is what it ought to show as I never logged the ouput for the old system,
so I don't know whether the problem is with that response or, perhaps, with the Network manager or something else.

I can still use my usb MBB dongle; then the output of ifconfig is as it used to be {& it's shown as wwan0}:-

Code: Select all

enp0s25: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
        ether 00:24:81:f7:be:c1  txqueuelen 1000  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
        device interrupt 22  memory 0xd8800000-d8820000  

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 1000  (Local Loopback)
        RX packets 4922  bytes 718664 (701.8 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 4922  bytes 718664 (701.8 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

wwan0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 92.41.70.45  netmask 255.255.255.252  broadcast 92.41.70.47
        ether 9a:e5:7f:a8:10:85  txqueuelen 1000  (Ethernet)
        RX packets 723  bytes 885454 (864.7 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 525  bytes 62311 (60.8 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
Can anyone offer any insight into the problem please?

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