[sabroe]

How do I debug mobile broadband connectivity? I do not get connected.

How do I see what my router is trying to do? Turn on logs, initiate a connect?
Where do I find current and valid information?

I have used the dongle on another machine - a RPi with Raspbian - where it does work.
On my DD-WRT router, I am able to connect manually with 'chat'; see below.

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Firmware: DD-WRT v3.0-r31722 std (03/21/17)
Router: WRT1200ACv2
Dongle: D-Link DWM-157 B1, 2001:7d02, is on the list of DD-WRT dongles with no comments.


A "cat /proc/bus/usb/devices" includes this:

T: Bus=01 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 3 Spd=480 MxCh= 0
D: Ver= 2.00 Cls=ef(misc ) Sub=02 Prot=01 MxPS=64 #Cfgs= 1
P: Vendor=2001 ProdID=7d02 Rev= 3.00
S: Manufacturer=D-Link,Inc
S: Product=D-Link DWM-157
C:* #Ifs= 7 Cfg#= 1 Atr=a0 MxPwr=500mA
A: FirstIf#= 0 IfCount= 2 Cls=02(comm.) Sub=0e Prot=00
I:* If#= 0 Alt= 0 #EPs= 1 Cls=02(comm.) Sub=0e Prot=00 Driver=(none)
E: Ad=88(I) Atr=03(Int.) MxPS= 64 Ivl=125us
I:* If#= 1 Alt= 0 #EPs= 0 Cls=0a(data ) Sub=00 Prot=02 Driver=(none)
I: If#= 1 Alt= 1 #EPs= 2 Cls=0a(data ) Sub=00 Prot=02 Driver=(none)
E: Ad=81(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E: Ad=01(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
I:* If#= 2 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=02 Prot=01 Driver=option
E: Ad=87(I) Atr=03(Int.) MxPS= 64 Ivl=500us
E: Ad=82(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E: Ad=02(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
I:* If#= 3 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=00 Prot=00 Driver=option
E: Ad=83(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E: Ad=03(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
I:* If#= 4 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=00 Prot=00 Driver=option
E: Ad=84(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E: Ad=04(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
I:* If#= 5 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=00 Prot=00 Driver=option
E: Ad=85(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E: Ad=05(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
I:* If#= 6 Alt= 0 #EPs= 2 Cls=08(stor.) Sub=06 Prot=50 Driver=usb-storage
E: Ad=86(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E: Ad=06(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms


I can find the 3G-dongle of mine under /dev - and after playing around with some of the utilities with which I am not acquainted, I do get a positive response from the modem itself:

root@enterprise:/tmp# /usr/sbin/chat -E -s -V -f /tmp/_scriptfile < /dev/ttyUSB0 > /dev/ttyUSB0
ATZ
OK
ATZ +CFUN=1,0
OK
ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
OK
AT+CGDCONT=1,"IP","internet"
OK
root@enterprise:/tmp# cat _scriptfile
ABORT ERROR
TIMEOUT 10
"" ATZ
OK "ATZ +CFUN=1,0"
OK "ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0"
OK "AT+CGDCONT=1,\"IP\",\"internet\""
OK ""

I note that some of the existing scripts on the router happens to use AT_OWANCALL and AT_OWANDATA. These commands I can not get to work, but than again - I do not know if the scripts I am looking at happens to be used at all (like e.g. /etc/hso/hso_connect.sh).


root@enterprise:~# dmesg
[ 1.031470] Bad block table found at page 65408, version 0x01
[ 1.037496] found commandline
[ 1.040474] rename part 7 to ubi
[ 1.043576] 11 ofpart partitions found on MTD device pxa3xx_nand-0
[ 1.049967] Creating 11 MTD partitions on "pxa3xx_nand-0":
[ 1.055484] 0x000000000000-0x000000200000 : "u-boot"
[ 1.060784] 0x000000200000-0x000000240000 : "u_env"
[ 1.065938] 0x000000240000-0x000000280000 : "s_env"
[ 1.071088] 0x000000900000-0x000000a00000 : "devinfo"
[ 1.076422] 0x000000a00000-0x000003200000 : "linux"
[ 1.081621] 0x000000d00000-0x000003200000 : "rootfs"
[ 1.086891] mtd: partition "rootfs" set to be root filesystem
[ 1.092831] split_squashfs: no squashfs found in "pxa3xx_nand-0"
[ 1.098864] 0x000003200000-0x000005900000 : "linux2"
[ 1.104164] 0x000003500000-0x000005900000 : "ubi"
[ 1.109180] 0x000005900000-0x000005940000 : "nvram"
[ 1.114356] 0x000005a00000-0x000007f00000 : "ddwrt"
[ 1.119556] 0x000000280000-0x000000900000 : "unused_area"
[ 1.125697] libphy: Fixed MDIO Bus: probed
[ 1.129815] tun: Universal TUN/TAP device driver, 1.6
[ 1.134895] tun: (C) 1999-2004 Max Krasnyansky <maxk@qualcomm.com>
[ 1.141248] libphy: orion_mdio_bus: probed
[ 1.146251] mvneta f1034000.ethernet eth0: Using random mac address 36:15:37:a5:c5:ae
[ 1.154912] mvneta f1070000.ethernet eth1: Using hardware mac address 60:38:e0:d9:2f:f5
[ 1.163008] PPP generic driver version 2.4.2
[ 1.167358] PPP BSD Compression module registered
[ 1.172093] PPP Deflate Compression module registered
[ 1.177174] PPP MPPE Compression module registered
[ 1.181992] NET: Registered protocol family 24
[ 1.186989] GACT probability NOT on
[ 1.190497] Mirror/redirect action on
[ 1.194195] Simple TC action Loaded
[ 1.197978] netem: version 1.3
[ 1.201064] u32 classifier
[ 1.203786] Performance counters on
[ 1.207636] input device check on
[ 1.211315] Actions configured
[ 1.214748] Netfilter messages via NETLINK v0.30.
[ 1.219495] nf_conntrack version 0.5.0 (8039 buckets, 32156 max)
[ 1.225674] nf_conntrack_rtsp v0.7 loading
[ 1.230001] xt_time: kernel timezone is -0000
[ 1.234397] ip_set: protocol 6
[ 1.237602] gre: GRE over IPv4 demultiplexor driver
[ 1.242627] nf_nat_rtsp v0.7 loading
[ 1.246231] ip_tables: (C) 2000-2006 Netfilter Core Team
[ 1.251663] TCP: bic registered
[ 1.254819] TCP: cubic registered
[ 1.258149] TCP: westwood registered
[ 1.261746] TCP: highspeed registered
[ 1.265423] TCP: hybla registered
[ 1.268751] TCP: htcp registered
[ 1.271997] TCP: vegas registered
[ 1.275326] TCP: veno registered
[ 1.278567] TCP: scalable registered
[ 1.282161] TCP: lp registered
[ 1.285229] TCP: yeah registered
[ 1.288471] TCP: illinois registered
[ 1.292066] NET: Registered protocol family 17
[ 1.296551] bridge: automatic filtering via arp/ip/ip6tables has been deprecated. Update your scripts to load br_netfilter if you need this.
[ 1.309238] Bridge firewalling registered
[ 1.313278] 8021q: 802.1Q VLAN Support v1.8
[ 1.317551] Registering SWP/SWPB emulation handler
[ 1.322720] searching for nvram
[ 1.325880] nvram size = -1069427758
[ 1.335468] UBI: auto-attach mtd7
[ 1.338800] UBI: attaching mtd7 to ubi0
[ 1.433913] UBI: scanning is finished
[ 1.441773] UBI: attached mtd7 (name "ubi", size 36 MiB) to ubi0
[ 1.447806] UBI: PEB size: 131072 bytes (128 KiB), LEB size: 126976 bytes
[ 1.454630] UBI: min./max. I/O unit sizes: 2048/2048, sub-page size 2048
[ 1.461363] UBI: VID header offset: 2048 (aligned 2048), data offset: 4096
[ 1.468265] UBI: good PEBs: 288, bad PEBs: 0, corrupted PEBs: 0
[ 1.474212] UBI: user volume: 2, internal volumes: 1, max. volumes count: 128
[ 1.481381] UBI: max/mean erase counter: 1/0, WL threshold: 4096, image sequence number: 172517718
[ 1.490377] UBI: available PEBs: 0, total reserved PEBs: 288, PEBs reserved for bad PEB handling: 20
[ 1.499566] UBI: background thread "ubi_bgt0d" started, PID 392
[ 1.505804] UBI: ubiblock0_0 created from ubi0:0(rootfs)
[ 1.511345] mvsw61xx 10.mvsw61xx: Found MV88E6176 at f1072004.mdio-mi:10
[ 1.518075] mvsw61xx 10.mvsw61xx: Using direct addressing
[ 1.523537] drivers/rtc/hctosys.c: unable to open rtc device (rtc0)
[ 1.530587] Waiting 1 sec before mounting root device...
[ 2.542824] VFS: Mounted root (squashfs filesystem) readonly on device 254:0.
[ 2.550135] Freeing unused kernel memory: 228K (c0471000 - c04aa000)
[ 3.837268] orion_wdt: Initial timeout 171 sec, nowayout
[ 3.870016] i2c /dev entries driver
[ 4.069023] armada38x-rtc f10a3800.rtc: rtc core: registered f10a3800.rtc as rtc0
[ 4.111695] marvell-cesa: probe of f1090000.crypto failed with error -22
[ 4.122722] Loading modules backported from Linux version wt-2017-01-31-0-ge882dff19e7f
[ 4.130761] Backport generated by backports.git backports-20160324-13-g24da7d3c
[ 4.260791] <<Marvell 802.11ac Wireless Network Driver version 10.3.2.0-20170110>>
[ 4.268427] pci 0000:00:01.0: enabling device (0140 -> 0142)
[ 4.274179] ieee80211 phy0: priv->iobase0 = e0c00000
[ 4.274194] ieee80211 phy0: priv->iobase1 = e0e00000
[ 4.274241] ieee80211 phy0: priv->pcmd_buf = e0a84000 priv->pphys_cmd_buf = 1eeac000
[ 4.305265] ieee80211 phy0: fw download start
[ 4.422162] ieee80211 phy0: FwSize = 118776 downloaded Size = 118776 curr_iteration 65496
[ 5.381116] ieee80211 phy0: fw download complete
[ 5.385777] ieee80211 phy0: pcmd = e0a84000
[ 5.403806] ieee80211 phy0: firmware version: 0x702091a
[ 5.755120] ieee80211 phy0: firmware region code: 30
[ 5.783860] ieee80211 phy0: 2G disabled, 5G enabled
[ 5.788768] ieee80211 phy0: 2 TX antennas, 2 RX antennas
[ 5.794198] pci 0000:00:02.0: enabling device (0140 -> 0142)
[ 5.799945] ieee80211 phy1: priv->iobase0 = e1000000
[ 5.799961] ieee80211 phy1: priv->iobase1 = e1200000
[ 5.800013] ieee80211 phy1: priv->pcmd_buf = e0afc000 priv->pphys_cmd_buf = 1ebb8000
[ 5.806266] ieee80211 phy1: fw download start
[ 5.923943] ieee80211 phy1: FwSize = 118776 downloaded Size = 118776 curr_iteration 65511
[ 6.877115] ieee80211 phy1: fw download complete
[ 6.881796] ieee80211 phy1: pcmd = e0afc000
[ 6.899822] ieee80211 phy1: firmware version: 0x702091a
[ 7.250121] ieee80211 phy1: firmware region code: 30
[ 7.277835] ieee80211 phy1: 2G enabled, 5G disabled
[ 7.282770] ieee80211 phy1: 2 TX antennas, 2 RX antennas
[ 7.331865] random: nonblocking pool is initialized
[ 7.518064] usbcore: registered new interface driver usbfs
[ 7.523668] usbcore: registered new interface driver hub
[ 7.529036] usbcore: registered new device driver usb
[ 7.551710] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[ 7.562179] ehci-platform: EHCI generic platform driver
[ 7.576425] ehci-pci: EHCI PCI platform driver
[ 10.623082] xhci-hcd f10f8000.usb3: xHCI Host Controller
[ 10.628460] xhci-hcd f10f8000.usb3: new USB bus registered, assigned bus number 1
[ 10.636118] xhci-hcd f10f8000.usb3: irq 49, io mem 0xf10f8000
[ 10.642362] hub 1-0:1.0: USB hub found
[ 10.646254] hub 1-0:1.0: 1 port detected
[ 10.650406] xhci-hcd f10f8000.usb3: xHCI Host Controller
[ 10.655776] xhci-hcd f10f8000.usb3: new USB bus registered, assigned bus number 2
[ 10.663601] hub 2-0:1.0: USB hub found
[ 10.667394] hub 2-0:1.0: 1 port detected
[ 10.789976] usbcore: registered new interface driver usb-storage
[ 10.814898] ehci-orion: EHCI orion driver
[ 10.819043] orion-ehci f1058000.usb: EHCI Host Controller
[ 10.824503] orion-ehci f1058000.usb: new USB bus registered, assigned bus number 3
[ 10.832180] orion-ehci f1058000.usb: irq 50, io mem 0xf1058000
[ 10.851123] orion-ehci f1058000.usb: USB 2.0 started, EHCI 1.00
[ 10.857453] hub 3-0:1.0: USB hub found
[ 10.861369] hub 3-0:1.0: 1 port detected
[ 10.923374] ahci-mvebu f10a8000.sata: AHCI 0001.0000 32 slots 2 ports 6 Gbps 0x3 impl platform mode
[ 10.932484] ahci-mvebu f10a8000.sata: flags: 64bit ncq sntf led only pmp fbs pio slum part sxs
[ 10.942053] scsi host0: ahci_platform
[ 10.946132] scsi host1: ahci_platform
[ 10.949924] ata1: SATA max UDMA/133 mmio [mem 0xf10a8000-0xf10a9fff] port 0x100 irq 58
[ 10.957887] ata2: SATA max UDMA/133 mmio [mem 0xf10a8000-0xf10a9fff] port 0x180 irq 58
[ 11.311121] ata2: SATA link down (SStatus 0 SControl 300)
[ 11.316564] ata1: SATA link down (SStatus 0 SControl 300)
[ 11.369204] sdhci: Secure Digital Host Controller Interface driver
[ 11.375423] sdhci: Copyright(c) Pierre Ossman
[ 11.394540] sdhci-pltfm: SDHCI platform and OF driver helper
[ 11.429505] usbcore: registered new interface driver usblp
[ 11.448900] usbip_core: USB/IP Core v1.0.0
[ 11.456963] usbcore: registered new device driver usbip-host
[ 11.462666] usbip_host: USB/IP Host Driver v1.0.0
[ 11.481578] vhci_hcd vhci_hcd: USB/IP Virtual Host Controller
[ 11.487368] vhci_hcd vhci_hcd: new USB bus registered, assigned bus number 4
[ 11.494490] vhci_hcd: created sysfs vhci_hcd
[ 11.499199] hub 4-0:1.0: USB hub found
[ 11.503094] hub 4-0:1.0: 8 ports detected
[ 11.507420] vhci_hcd: USB/IP 'Virtual' Host Controller (VHCI) Driver v1.0.0
[ 14.581122] usb 1-1: new high-speed USB device number 2 using xhci-hcd
[ 14.782680] usb-storage 1-1:1.0: USB Mass Storage device detected
[ 14.789338] scsi host2: usb-storage 1-1:1.0
[ 15.637416] Bluetooth: Core ver 2.22
[ 15.641041] NET: Registered protocol family 31
[ 15.645522] Bluetooth: HCI device and connection manager initialized
[ 15.651921] Bluetooth: HCI socket layer initialized
[ 15.656820] Bluetooth: L2CAP socket layer initialized
[ 15.791463] scsi 2:0:0:0: CD-ROM HSPA USB SCSI CD-ROM 6225 PQ: 0 ANSI: 0 CCS
[ 17.271016] device br0 entered promiscuous mode
[ 17.542627] device eth0 entered promiscuous mode
[ 17.802618] device eth1 entered promiscuous mode
[ 17.808960] br0: port 2(eth1) entered forwarding state
[ 17.814274] br0: port 2(eth1) entered forwarding state
[ 17.820811] br0: port 1(eth0) entered forwarding state
[ 17.825979] br0: port 1(eth0) entered forwarding state
[ 17.831149] device br0 left promiscuous mode
[ 17.836970] device br0 entered promiscuous mode
[ 17.846673] device br0 left promiscuous mode
[ 18.261150] br0: port 1(eth0) entered disabled state
[ 18.266184] br0: port 2(eth1) entered disabled state
[ 19.541129] mvneta f1034000.ethernet eth0: link up
[ 19.545951] br0: port 1(eth0) entered forwarding state
[ 19.551123] br0: port 1(eth0) entered forwarding state
[ 19.801125] mvneta f1070000.ethernet eth1: link up
[ 19.805942] br0: port 2(eth1) entered forwarding state
[ 19.811106] br0: port 2(eth1) entered forwarding state
[ 21.551110] br0: port 1(eth0) entered forwarding state
[ 21.801109] br0: port 2(eth1) entered forwarding state
[ 31.044166] device ath0 entered promiscuous mode
[ 36.253154] br0: port 3(ath0) entered forwarding state
[ 36.258326] br0: port 3(ath0) entered forwarding state
[ 38.251114] br0: port 3(ath0) entered forwarding state
[ 41.098128] device ath1 entered promiscuous mode
[ 46.290143] br0: port 4(ath1) entered forwarding state
[ 46.295324] br0: port 4(ath1) entered forwarding state
[ 48.291120] br0: port 4(ath1) entered forwarding state
[ 48.451480] usbcore: registered new interface driver usbserial
[ 48.457394] usbcore: registered new interface driver usbserial_generic
[ 48.464082] usbserial: USB Serial support registered for generic
[ 48.506002] usbcore: registered new interface driver cdc_wdm
[ 48.533072] usbcore: registered new interface driver qmi_wwan
[ 48.565326] usbcore: registered new interface driver option
[ 48.570961] usbserial: USB Serial support registered for GSM modem (1-port)
[ 78.579657] nf_conntrack: automatic helper assignment is deprecated and it will be removed soon. Use the iptables CT target to attach helpers instead.
[ 86.559872] usb 1-1: USB disconnect, device number 2
[ 87.391123] usb 1-1: new high-speed USB device number 3 using xhci-hcd
[ 87.593550] option 1-1:1.2: GSM modem (1-port) converter detected
[ 87.599809] usb 1-1: GSM modem (1-port) converter now attached to ttyUSB0
[ 87.607077] option 1-1:1.3: GSM modem (1-port) converter detected
[ 87.613730] usb 1-1: GSM modem (1-port) converter now attached to ttyUSB1
[ 87.621046] option 1-1:1.4: GSM modem (1-port) converter detected
[ 87.627434] usb 1-1: GSM modem (1-port) converter now attached to ttyUSB2
[ 87.634679] option 1-1:1.5: GSM modem (1-port) converter detected
[ 87.640905] usb 1-1: GSM modem (1-port) converter now attached to ttyUSB3
[ 87.647982] usb-storage 1-1:1.6: USB Mass Storage device detected
[ 87.654240] scsi host3: usb-storage 1-1:1.6
[ 88.651451] scsi 3:0:0:0: Direct-Access HSPA USB SCSI CD-ROM 6225 PQ: 0 ANSI: 0 CCS
[ 88.661745] sd 3:0:0:0: [sda] Attached SCSI removable disk
root@enterprise:~#