Cellular modem connection does not come up on boot

[Liam Monahan <liam monahan aquicore com>]

I have a USB cellular modem that will not show up in nm on boot.  If the system is started up and I unplug 
and plug it back in, it shows up then.  These device are deployed out in the field, so manual intervention is 
not a real option for my use case unfortunately.

device is ttyUSB3 and does not show up at first:

# nmcli d
DEVICE     TYPE      STATE         CONNECTION         
eth0       ethernet  connected     Wired connection 1 
wlan0      wifi      disconnected  --                 
docker0    bridge    unmanaged     --                 
lo         loopback  unmanaged     --                 
resin-vpn  tun       unmanaged     — 

and then after unplugging and plugging back in:
 
# nmcli d
DEVICE     TYPE      STATE         CONNECTION         
ttyUSB3    cdma      connected     resin-verizon      
eth0       ethernet  connected     Wired connection 1 
wlan0      wifi      disconnected  --                 
docker0    bridge    unmanaged     --                 
lo         loopback  unmanaged     --                 
resin-vpn  tun       unmanaged     --   

# mmcli -L

Found 1 modems:
        /org/freedesktop/ModemManager1/Modem/0 [Telit] DE910-DUAL


dmesg makes it seem like the modem connected briefly and then disappeared.  Does anyone have any thoughts on 
what’s going on or how I could do a better job of going about debugging this?

[    0.000000] Booting Linux on physical CPU 0x0
[    0.000000] Initializing cgroup subsys cpuset
[    0.000000] Initializing cgroup subsys cpu
[    0.000000] Initializing cgroup subsys cpuacct
[    0.000000] Linux version 4.4.48 (andrei misc1 dev resin io) (gcc version 6.2.0 (GCC) ) #2 SMP Sat Mar 11 
03:08:12 UTC 2017
[    0.000000] CPU: ARMv7 Processor [410fd034] revision 4 (ARMv7), cr=10c5383d
[    0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
[    0.000000] Machine model: Raspberry Pi 3 Model B Rev 1.2
[    0.000000] cma: Reserved 8 MiB at 0x3d800000
[    0.000000] Memory policy: Data cache writealloc
[    0.000000] On node 0 totalpages: 253952
[    0.000000] free_area_init_node: node 0, pgdat 80ca84c0, node_mem_map bcf3a000
[    0.000000]   Normal zone: 2232 pages used for memmap
[    0.000000]   Normal zone: 0 pages reserved
[    0.000000]   Normal zone: 253952 pages, LIFO batch:31
[    0.000000] [bcm2709_smp_init_cpus] enter (9540->f3003010)
[    0.000000] [bcm2709_smp_init_cpus] ncores=4
[    0.000000] PERCPU: Embedded 13 pages/cpu @bcef6000 s23052 r8192 d22004 u53248
[    0.000000] pcpu-alloc: s23052 r8192 d22004 u53248 alloc=13*4096
[    0.000000] pcpu-alloc: [0] 0 [0] 1 [0] 2 [0] 3 
[    0.000000] Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 251720
[    0.000000] Kernel command line: 8250.nr_uarts=1 dma.dmachans=0x7f35 bcm2708_fb.fbwidth=656 
bcm2708_fb.fbheight=416 bcm2709.boardrev=0xa22082 bcm2709.serial=0xca8e10ef 
smsc95xx.macaddr=B8:27:EB:8E:10:EF bcm2708_fb.fbdepth=16 bcm2708_fb.fbswap=1 bcm2709.uart_clock=48000000 
vc_mem.mem_base=0x3ea00000 vc_mem.mem_size=0x3f000000  dwc_otg.lpm_enable=0 console=tty1 console=ttyS0,115200 
root=/dev/mmcblk0p2 rootfstype=ext4 rootwait
[    0.000000] PID hash table entries: 4096 (order: 2, 16384 bytes)
[    0.000000] Dentry cache hash table entries: 131072 (order: 7, 524288 bytes)
[    0.000000] Inode-cache hash table entries: 65536 (order: 6, 262144 bytes)
[    0.000000] Memory: 983796K/1015808K available (7029K kernel code, 454K rwdata, 1956K rodata, 3524K init, 
775K bss, 23820K reserved, 8192K cma-reserved)
[    0.000000] Virtual kernel memory layout:
                   vector  : 0xffff0000 - 0xffff1000   (   4 kB)
                   fixmap  : 0xffc00000 - 0xfff00000   (3072 kB)
                   vmalloc : 0xbe800000 - 0xff800000   (1040 MB)
                   lowmem  : 0x80000000 - 0xbe000000   ( 992 MB)
                   modules : 0x7f000000 - 0x80000000   (  16 MB)
                     .text : 0x80008000 - 0x808ce6fc   (8986 kB)
                     .init : 0x808cf000 - 0x80c40000   (3524 kB)
                     .data : 0x80c40000 - 0x80cb1a80   ( 455 kB)
                      .bss : 0x80cb4000 - 0x80d75f84   ( 776 kB)
[    0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=4, Nodes=1
[    0.000000] Hierarchical RCU implementation.
[    0.000000]  Build-time adjustment of leaf fanout to 32.
[    0.000000] NR_IRQS:16 nr_irqs:16 16
[    0.000000] Architected cp15 timer(s) running at 19.20MHz (phys).
[    0.000000] clocksource: arch_sys_counter: mask: 0xffffffffffffff max_cycles: 0x46d987e47, max_idle_ns: 
440795202767 ns
[    0.000008] sched_clock: 56 bits at 19MHz, resolution 52ns, wraps every 4398046511078ns
[    0.000024] Switching to timer-based delay loop, resolution 52ns
[    0.000269] Console: colour dummy device 80x30
[    0.001295] console [tty1] enabled
[    0.001349] Calibrating delay loop (skipped), value calculated using timer frequency.. 38.40 BogoMIPS 
(lpj=192000)
[    0.001417] pid_max: default: 32768 minimum: 301
[    0.001746] Mount-cache hash table entries: 2048 (order: 1, 8192 bytes)
[    0.001791] Mountpoint-cache hash table entries: 2048 (order: 1, 8192 bytes)
[    0.002732] Disabling cpuset control group subsystem
[    0.002790] Initializing cgroup subsys io
[    0.002841] Initializing cgroup subsys memory
[    0.002904] Initializing cgroup subsys devices
[    0.002947] Initializing cgroup subsys freezer
[    0.002989] Initializing cgroup subsys net_cls
[    0.003057] CPU: Testing write buffer coherency: ok
[    0.003147] ftrace: allocating 23395 entries in 69 pages
[    0.058204] CPU0: update cpu_capacity 1024
[    0.058265] CPU0: thread -1, cpu 0, socket 0, mpidr 80000000
[    0.058299] [bcm2709_smp_prepare_cpus] enter
[    0.058459] Setting up static identity map for 0x8240 - 0x8274
[    0.060108] [bcm2709_boot_secondary] cpu:1 started (0) 18
[    0.060323] [bcm2709_secondary_init] enter cpu:1
[    0.060366] CPU1: update cpu_capacity 1024
[    0.060372] CPU1: thread -1, cpu 1, socket 0, mpidr 80000001
[    0.060751] [bcm2709_boot_secondary] cpu:2 started (0) 17
[    0.060926] [bcm2709_secondary_init] enter cpu:2
[    0.060946] CPU2: update cpu_capacity 1024
[    0.060952] CPU2: thread -1, cpu 2, socket 0, mpidr 80000002
[    0.061314] [bcm2709_boot_secondary] cpu:3 started (0) 16
[    0.061442] [bcm2709_secondary_init] enter cpu:3
[    0.061462] CPU3: update cpu_capacity 1024
[    0.061467] CPU3: thread -1, cpu 3, socket 0, mpidr 80000003
[    0.061528] Brought up 4 CPUs
[    0.061627] SMP: Total of 4 processors activated (153.60 BogoMIPS).
[    0.061656] CPU: All CPU(s) started in HYP mode.
[    0.061682] CPU: Virtualization extensions available.
[    0.062314] devtmpfs: initialized
[    0.072946] VFP support v0.3: implementor 41 architecture 3 part 40 variant 3 rev 4
[    0.073313] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 
ns
[    0.074055] pinctrl core: initialized pinctrl subsystem
[    0.074602] NET: Registered protocol family 16
[    0.079711] DMA: preallocated 4096 KiB pool for atomic coherent allocations
[    0.086830] bcm2709: Mini UART enabled
[    0.086890] hw-breakpoint: found 5 (+1 reserved) breakpoint and 4 watchpoint registers.
[    0.086937] hw-breakpoint: maximum watchpoint size is 8 bytes.
[    0.087110] Serial: AMBA PL011 UART driver
[    0.087264] uart-pl011 3f201000.uart: could not find pctldev for node /soc/gpio@7e200000/uart0_pins, 
deferring probe
[    0.087464] bcm2835-mbox 3f00b880.mailbox: mailbox enabled
[    0.150273] bcm2835-dma 3f007000.dma: DMA legacy API manager at f3007000, dmachans=0x1
[    0.150899] SCSI subsystem initialized
[    0.151102] usbcore: registered new interface driver usbfs
[    0.151201] usbcore: registered new interface driver hub
[    0.151312] usbcore: registered new device driver usb
[    0.157747] raspberrypi-firmware soc:firmware: Attached to firmware from 2016-11-25 16:05
[    0.184829] clocksource: Switched to clocksource arch_sys_counter
[    0.230483] FS-Cache: Loaded
[    0.230782] CacheFiles: Loaded
[    0.242888] NET: Registered protocol family 2
[    0.243743] TCP established hash table entries: 8192 (order: 3, 32768 bytes)
[    0.243881] TCP bind hash table entries: 8192 (order: 4, 65536 bytes)
[    0.244091] TCP: Hash tables configured (established 8192 bind 8192)
[    0.244206] UDP hash table entries: 512 (order: 2, 16384 bytes)
[    0.244273] UDP-Lite hash table entries: 512 (order: 2, 16384 bytes)
[    0.244522] NET: Registered protocol family 1
[    0.244891] RPC: Registered named UNIX socket transport module.
[    0.244923] RPC: Registered udp transport module.
[    0.244951] RPC: Registered tcp transport module.
[    0.244978] RPC: Registered tcp NFSv4.1 backchannel transport module.
[    0.499843] hw perfevents: enabled with armv7_cortex_a7 PMU driver, 7 counters available
[    0.501237] futex hash table entries: 1024 (order: 4, 65536 bytes)
[    0.514403] VFS: Disk quotas dquot_6.6.0
[    0.514744] VFS: Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
[    0.516650] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[    0.517153] FS-Cache: Netfs 'nfs' registered for caching
[    0.518056] NFS: Registering the id_resolver key type
[    0.518128] Key type id_resolver registered
[    0.518156] Key type id_legacy registered
[    0.519889] aufs 4.4-20160912
[    0.521345] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 252)
[    0.521501] io scheduler noop registered
[    0.521537] io scheduler deadline registered
[    0.521605] io scheduler cfq registered (default)
[    0.524215] BCM2708FB: allocated DMA memory fdc10000
[    0.524263] BCM2708FB: allocated DMA channel 0 @ f3007000
[    0.529430] Console: switching to colour frame buffer device 82x26
[    0.607836] Serial: 8250/16550 driver, 1 ports, IRQ sharing disabled
[    0.610911] console [ttyS0] disabled
[    0.612602] 3f215040.uart: ttyS0 at MMIO 0x3f215040 (irq = 59, base_baud = 31250000) is a 16550
[    1.351198] console [ttyS0] enabled
[    2.342984] bcm2835-rng 3f104000.rng: hwrng registered
[    2.350152] vc-cma: Videocore CMA driver
[    2.355881] vc-cma: vc_cma_base      = 0x00000000
[    2.362328] vc-cma: vc_cma_size      = 0x00000000 (0 MiB)
[    2.369453] vc-cma: vc_cma_initial   = 0x00000000 (0 MiB)
[    2.376750] vc-mem: phys_addr:0x00000000 mem_base=0x3ea00000 mem_size:0x3f000000(1008 MiB)
[    2.402945] brd: module loaded
[    2.416363] loop: module loaded
[    2.421958] vchiq: vchiq_init_state: slot_zero = 0xbdc80000, is_master = 0
[    2.431945] Loading iSCSI transport class v2.0-870.
[    2.439091] tun: Universal TUN/TAP device driver, 1.6
[    2.445880] tun: (C) 1999-2004 Max Krasnyansky <maxk qualcomm com>
[    2.454093] usbcore: registered new interface driver smsc95xx
[    2.461584] dwc_otg: version 3.00a 10-AUG-2012 (platform bus)
[    2.669293] Core Release: 2.80a
[    2.674094] Setting default values for core params
[    2.680641] Finished setting default values for core params
[    2.888300] Using Buffer DMA mode
[    2.893340] Periodic Transfer Interrupt Enhancement - disabled
[    2.900980] Multiprocessor Interrupt Enhancement - disabled
[    2.908339] OTG VER PARAM: 0, OTG VER FLAG: 0
[    2.914428] Dedicated Tx FIFOs mode
[    2.919865] WARN::dwc_otg_hcd_init:1047: FIQ DMA bounce buffers: virt = 0xbdc04000 dma = 0xfdc04000 
len=9024
[    2.933170] FIQ FSM acceleration enabled for :
               Non-periodic Split Transactions
               Periodic Split Transactions
               High-Speed Isochronous Endpoints
               Interrupt/Control Split Transaction hack enabled
[    2.964168] dwc_otg: Microframe scheduler enabled
[    2.964229] WARN::hcd_init_fiq:413: FIQ on core 1 at 0x80481ef8
[    2.971952] WARN::hcd_init_fiq:414: FIQ ASM at 0x80482258 length 36
[    2.979974] WARN::hcd_init_fiq:439: MPHI regs_base at 0xbe87e000
[    2.987783] dwc_otg 3f980000.usb: DWC OTG Controller
[    2.994534] dwc_otg 3f980000.usb: new USB bus registered, assigned bus number 1
[    3.003694] dwc_otg 3f980000.usb: irq 62, io mem 0x00000000
[    3.011068] Init: Port Power? op_state=1
[    3.016708] Init: Power Port (0)
[    3.021786] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
[    3.030361] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    3.039371] usb usb1: Product: DWC OTG Controller
[    3.045792] usb usb1: Manufacturer: Linux 4.4.48 dwc_otg_hcd
[    3.053178] usb usb1: SerialNumber: 3f980000.usb
[    3.060187] hub 1-0:1.0: USB hub found
[    3.065630] hub 1-0:1.0: 1 port detected
[    3.071726] dwc_otg: FIQ enabled
[    3.071735] dwc_otg: NAK holdoff enabled
[    3.071742] dwc_otg: FIQ split-transaction FSM enabled
[    3.071772] Module dwc_common_port init
[    3.072020] usbcore: registered new interface driver usb-storage
[    3.079955] mousedev: PS/2 mouse device common for all mice
[    3.087879] bcm2835-cpufreq: min=600000 max=1200000
[    3.094683] sdhci: Secure Digital Host Controller Interface driver
[    3.102565] sdhci: Copyright(c) Pierre Ossman
[    3.108808] sdhost: log_buf @ bdc07000 (fdc07000)
[    3.174858] mmc0: sdhost-bcm2835 loaded - DMA enabled (>1)
[    3.184314] mmc-bcm2835 3f300000.mmc: mmc_debug:0 mmc_debug2:0
[    3.191851] mmc-bcm2835 3f300000.mmc: DMA channel allocated
[    3.254943] sdhci-pltfm: SDHCI platform and OF driver helper
[    3.262666] ledtrig-cpu: registered to indicate activity on CPUs
[    3.270471] Indeed it is in host mode hprt0 = 00021501
[    3.295045] hidraw: raw HID events driver (C) Jiri Kosina
[    3.302346] usbcore: registered new interface driver usbhid
[    3.309643] usbhid: USB HID core driver
[    3.316276] nf_conntrack version 0.5.0 (15499 buckets, 61996 max)
[    3.337759] ip_tables: (C) 2000-2006 Netfilter Core Team
[    3.344991] Initializing XFRM netlink socket
[    3.347127] mmc0: host does not support reading read-only switch, assuming write-enable
[    3.350467] mmc0: new high speed SDXC card at address aaaa
[    3.351173] mmcblk0: mmc0:aaaa SL64G 59.5 GiB
[    3.368775]  mmcblk0: p1 p2 p3 p4 < p5 p6 >
[    3.383344] NET: Registered protocol family 10
[    3.386935] mmc1: queuing unknown CIS tuple 0x80 (2 bytes)
[    3.388488] mmc1: queuing unknown CIS tuple 0x80 (3 bytes)
[    3.390042] mmc1: queuing unknown CIS tuple 0x80 (3 bytes)
[    3.392838] mmc1: queuing unknown CIS tuple 0x80 (7 bytes)
[    3.419647] NET: Registered protocol family 17
[    3.425795] bridge: automatic filtering via arp/ip/ip6tables has been deprecated. Update your scripts to 
load br_netfilter if you need this.
[    3.441979] Key type dns_resolver registered
[    3.448408] Registering SWP/SWPB emulation handler
[    3.454874] usb 1-1: new high-speed USB device number 2 using dwc_otg
[    3.455014] Indeed it is in host mode hprt0 = 00001101
[    3.470876] registered taskstats version 1
[    3.476866] vc-sm: Videocore shared memory driver
[    3.483289] [vc_sm_connected_init]: start
[    3.483387] mmc1: new high speed SDIO card at address 0001
[    3.505074] vc_vchi_sm_init: failed to open VCHI service (-1)
[    3.510815] [vc_sm_connected_init]: failed to initialize shared memory service
[    3.521606] [vc_sm_connected_init]: end - returning -1
[    3.529758] 3f201000.uart: ttyAMA0 at MMIO 0x3f201000 (irq = 87, base_baud = 0) is a PL011 rev2
[    3.542381] of_cfs_init
[    3.546538] of_cfs_init: OK
[    3.556218] Freeing unused kernel memory: 3524K (808cf000 - 80c40000)
[    3.655220] usb 1-1: New USB device found, idVendor=0424, idProduct=9514
[    3.664274] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[    3.674620] hub 1-1:1.0: USB hub found
[    3.680578] hub 1-1:1.0: 5 ports detected
[    3.964918] usb 1-1.1: new high-speed USB device number 3 using dwc_otg
[    4.085270] usb 1-1.1: New USB device found, idVendor=0424, idProduct=ec00
[    4.094280] usb 1-1.1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[    4.104314] random: udevd: uninitialized urandom read (16 bytes read, 65 bits of entropy available)
[    4.107092] smsc95xx v1.0.4
[    4.110606] random: udevadm: uninitialized urandom read (16 bytes read, 66 bits of entropy available)
[    4.110869] random: udevadm: uninitialized urandom read (16 bytes read, 66 bits of entropy available)
[    4.110981] random: udevadm: uninitialized urandom read (16 bytes read, 66 bits of entropy available)
[    4.111393] random: udevadm: uninitialized urandom read (16 bytes read, 66 bits of entropy available)
[    4.111799] random: udevadm: uninitialized urandom read (16 bytes read, 66 bits of entropy available)
[    4.112199] random: udevadm: uninitialized urandom read (16 bytes read, 66 bits of entropy available)
[    4.113772] random: udevadm: uninitialized urandom read (16 bytes read, 66 bits of entropy available)
[    4.114238] random: udevadm: uninitialized urandom read (16 bytes read, 66 bits of entropy available)
[    4.114788] random: udevadm: uninitialized urandom read (16 bytes read, 66 bits of entropy available)
[    4.168446] smsc95xx 1-1.1:1.0 eth0: register 'smsc95xx' at usb-3f980000.usb-1.1, smsc95xx USB 2.0 
Ethernet, b8:27:eb:8e:10:ef
[    4.244874] usb 1-1.2: new high-speed USB device number 4 using dwc_otg
[    4.346726] usb 1-1.2: New USB device found, idVendor=2109, idProduct=2813
[    4.356346] usb 1-1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[    4.366269] usb 1-1.2: Product: USB2.0 Hub
[    4.372809] usb 1-1.2: Manufacturer: VIA Labs, Inc.
[    4.381150] hub 1-1.2:1.0: USB hub found
[    4.387810] hub 1-1.2:1.0: 4 ports detected
[    4.684914] usb 1-1.2.1: new high-speed USB device number 5 using dwc_otg
[    4.806707] usb 1-1.2.1: New USB device found, idVendor=2109, idProduct=2813
[    4.816319] usb 1-1.2.1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[    4.828320] usb 1-1.2.1: Product: USB2.0 Hub
[    4.834803] usb 1-1.2.1: Manufacturer: VIA Labs, Inc.
[    4.844192] hub 1-1.2.1:1.0: USB hub found
[    4.851478] hub 1-1.2.1:1.0: 4 ports detected
[    5.071690] EXT4-fs (mmcblk0p2): mounted filesystem with ordered data mode. Opts: (null)
[    5.122129] EXT4-fs (mmcblk0p5): mounted filesystem with ordered data mode. Opts: (null)
[    5.440757] systemd[1]: System time before build time, advancing clock.
[    5.495438] systemd[1]: systemd 230 running in system mode. (-PAM -AUDIT -SELINUX +IMA -APPARMOR +SMACK 
+SYSVINIT +UTMP -LIBCRYPTSETUP -GCRYPT -GNUTLS +ACL +XZ -LZ4 -SECCOMP +BLKID -ELFUTILS +KMOD -IDN)
[    5.520088] systemd[1]: Detected architecture arm.
[    5.558280] systemd[1]: Set hostname to <raspberrypi3>.
[    5.915955] systemd[1]: brcm43438.service: Cannot add dependency job, ignoring: Unit brcm43438.service is 
masked.
[    5.934618] systemd[1]: Listening on Syslog Socket.
[    5.965144] systemd[1]: Listening on udev Kernel Socket.
[    6.013951] systemd[1]: Reached target Swap.
[    6.036703] systemd[1]: Created slice User and Session Slice.
[    6.065247] systemd[1]: Started Forward Password Requests to Wall Directory Watch.
[    6.095032] systemd[1]: Reached target Remote File Systems.
[    6.125239] systemd[1]: Listening on Journal Socket.
[    6.155232] systemd[1]: Listening on udev Control Socket.
[    6.185135] systemd[1]: Listening on /dev/initctl Compatibility Named Pipe.
[    6.215100] systemd[1]: Listening on Journal Socket (/dev/log).
[    6.245643] systemd[1]: Created slice System Slice.
[    6.275737] systemd[1]: Created slice system-getty.slice.
[    6.335211] systemd[1]: Mounting POSIX Message Queue File System...
[    6.354647] systemd[1]: Starting Create list of required static device nodes for the current kernel...
[    6.397755] systemd[1]: Starting Apply Kernel Variables...
[    6.428238] systemd[1]: Mounting Temporary Directory...
[    6.441175] systemd[1]: Created slice system-resin\x2dinfo.slice.
[    6.475808] systemd[1]: Created slice system-serial\x2dgetty.slice.
[    6.535185] systemd[1]: Mounting Configuration File System...
[    6.567876] systemd[1]: Starting Journal Service...
[    6.598113] systemd[1]: Mounting Debug File System...
[    6.627682] systemd[1]: Starting Remount Root and Kernel File Systems...
[    6.642643] systemd[1]: Reached target Slices.
[    6.652408] EXT4-fs (mmcblk0p2): re-mounted. Opts: (null)
[    6.678043] systemd[1]: Starting Setup Virtual Console...
[    6.715769] systemd[1]: Mounted Configuration File System.
[    6.745141] systemd[1]: Mounted POSIX Message Queue File System.
[    6.775074] systemd[1]: Mounted Debug File System.
[    6.805059] systemd[1]: Mounted Temporary Directory.
[    6.835426] systemd[1]: Started Journal Service.
[    7.460913] random: nonblocking pool is initialized
[    7.511711] bcm2835-wdt 3f100000.watchdog: Broadcom BCM2835 watchdog timer
[    7.521140] bcm2708_i2c 3f804000.i2c: BSC1 Controller at 0x3f804000 (irq 83) (baudrate 100000)
[    7.618164] gpiomem-bcm2835 3f200000.gpiomem: Initialised: Registers at 0x3f200000
[    7.924559] usbcore: registered new interface driver brcmfmac
[    8.071455] brcmfmac: brcmf_c_preinit_dcmds: Firmware version = wl0: Aug 29 2016 20:48:16 version 
7.45.41.26 (r640327) FWID 01-4527cfab
[    8.115653] brcmfmac: brcmf_cfg80211_reg_notifier: not a ISO3166 code
[    8.171708] brcmfmac: brcmf_cfg80211_reg_notifier: not a ISO3166 code
[    8.180085] cfg80211: World regulatory domain updated:
[    8.187070] cfg80211:  DFS Master region: unset
[    8.191563] cfg80211:   (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp), (dfs_cac_time)
[    8.206654] cfg80211:   (2402000 KHz - 2472000 KHz @ 40000 KHz), (N/A, 2000 mBm), (N/A)
[    8.218500] cfg80211:   (2457000 KHz - 2482000 KHz @ 20000 KHz, 92000 KHz AUTO), (N/A, 2000 mBm), (N/A)
[    8.231899] cfg80211:   (2474000 KHz - 2494000 KHz @ 20000 KHz), (N/A, 2000 mBm), (N/A)
[    8.244070] cfg80211:   (5170000 KHz - 5250000 KHz @ 80000 KHz, 160000 KHz AUTO), (N/A, 2000 mBm), (N/A)
[    8.257930] cfg80211:   (5250000 KHz - 5330000 KHz @ 80000 KHz, 160000 KHz AUTO), (N/A, 2000 mBm), (0 s)
[    8.272011] cfg80211:   (5490000 KHz - 5730000 KHz @ 160000 KHz), (N/A, 2000 mBm), (0 s)
[    8.284778] cfg80211:   (5735000 KHz - 5835000 KHz @ 80000 KHz), (N/A, 2000 mBm), (N/A)
[    8.297509] cfg80211:   (57240000 KHz - 63720000 KHz @ 2160000 KHz), (N/A, 0 mBm), (N/A)
[    8.728734] FAT-fs (mmcblk0p1): Volume was not properly unmounted. Some data may be corrupt. Please run 
fsck.
[   11.034879] usb 1-1.2.1.4: new high-speed USB device number 6 using dwc_otg
[   11.163270] usb 1-1.2.1.4: New USB device found, idVendor=1bc7, idProduct=1010
[   11.173591] usb 1-1.2.1.4: New USB device strings: Mfr=3, Product=2, SerialNumber=0
[   11.186183] usb 1-1.2.1.4: Product: Telit HS-USB Modem
[   11.193822] usb 1-1.2.1.4: Manufacturer: Telit Wireless Solutions
[   11.298375] usbcore: registered new interface driver usbserial
[   11.306974] usbcore: registered new interface driver usbserial_generic
[   11.310874] i2c /dev entries driver
[   11.322683] usbserial: USB Serial support registered for generic
[   11.457307] usbcore: registered new interface driver option
[   11.465653] usbserial: USB Serial support registered for GSM modem (1-port)
[   11.476030] option 1-1.2.1.4:1.0: GSM modem (1-port) converter detected
[   11.485725] usb 1-1.2.1.4: GSM modem (1-port) converter now attached to ttyUSB0
[   11.495740] option 1-1.2.1.4:1.1: GSM modem (1-port) converter detected
[   11.505452] usb 1-1.2.1.4: GSM modem (1-port) converter now attached to ttyUSB1
[   11.515829] option 1-1.2.1.4:1.2: GSM modem (1-port) converter detected
[   11.525445] usb 1-1.2.1.4: GSM modem (1-port) converter now attached to ttyUSB2
[   11.535416] option 1-1.2.1.4:1.3: GSM modem (1-port) converter detected
[   11.545109] usb 1-1.2.1.4: GSM modem (1-port) converter now attached to ttyUSB3
[   11.850674] brcmfmac: power management disabled
[   12.755171] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[   12.817140] smsc95xx 1-1.1:1.0 eth0: hardware isn't capable of remote wakeup
[   12.826826] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[   12.859391] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[   12.907950] brcmfmac: brcmf_add_if: ERROR: netdev:wlan0 already exists
[   12.916649] brcmfmac: brcmf_add_if: ignore IF event
[   12.925860] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[   12.933950] brcmfmac: power management disabled
[   13.461267] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[   13.469380] brcmfmac: power management disabled
[   14.036469] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[   27.920076] PPP generic driver version 2.4.2
[   27.998212] PPP BSD Compression module registered
[   28.043248] PPP Deflate Compression module registered
[  111.945594] EXT4-fs (mmcblk0p6): mounted filesystem with ordered data mode. Opts: (null)
[  113.227019] Bridge firewalling registered
[  113.797830] IPv6: ADDRCONF(NETDEV_UP): docker0: link is not ready
[  113.993171] aufs au_opts_verify:1597:docker[903]: dirperm1 breaks the protection by the permission bits on 
the lower branch
[  115.797146] EXT4-fs (mmcblk0p6): Unrecognized mount option "mode=755" or missing value
[  116.533554] systemd-udevd[49]: starting version 215
[  116.957152] systemd-journald[41]: Received request to flush runtime journal from PID 1
[  127.553331] uart-pl011 3f201000.uart: no DMA platform data