Re: Cellular modem connection does not come up on boot

[Dan Williams <dcbw redhat com>]

On Wed, 2017-03-29 at 10:48 -0400, Liam Monahan wrote:
> 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     — 

When the device doesn't show up in NM, can you see it with "mmcli -L"
before you replug it?

If you can see it in mmcli, then the problem is likely in
NetworkManager.  Getting debug logs would be necessary, which you can
do by adding this to /etc/NetworkManager/NetworkManager.conf:

[logging]
level=trace

If you can't see it in ModemManager, then the bug is likely in MM.  You
can enable verbose MM debugging by modifying the ModemManager system
unit file and adding "--log-level=debug" to the Exec= line.

One of those should give us more info about the issue.

Dan

> 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
> _______________________________________________
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