dmesg

root@raspberrypi:/home/pi# dmesg
[    0.000000] Booting Linux on physical CPU 0x0
[    0.000000] Linux version 4.14.84-v7+ (dom@dom-XPS-13-9370) (gcc version 4.9.3 (crosstool-NG crosstool-ng-1.22.0-88-g8460611)) #1169 SMP Thu Nov 29 16:20:43 GMT 2018
[    0.000000] CPU: ARMv7 Processor [410fd034] revision 4 (ARMv7), cr=10c5383d
[    0.000000] CPU: div instructions available: patching division code
[    0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
[    0.000000] OF: fdt: Machine model: Raspberry Pi 3 Model B Plus Rev 1.3
[    0.000000] Memory policy: Data cache writealloc
[    0.000000] cma: Reserved 8 MiB at 0x3ac00000
[    0.000000] On node 0 totalpages: 242688
[    0.000000] free_area_init_node: node 0, pgdat 80c85280, node_mem_map ba39f000
[    0.000000]   Normal zone: 2133 pages used for memmap
[    0.000000]   Normal zone: 0 pages reserved
[    0.000000]   Normal zone: 242688 pages, LIFO batch:31
[    0.000000] percpu: Embedded 17 pages/cpu @ba348000 s38720 r8192 d22720 u69632
[    0.000000] pcpu-alloc: s38720 r8192 d22720 u69632 alloc=17*4096
[    0.000000] pcpu-alloc: [0] 0 [0] 1 [0] 2 [0] 3
[    0.000000] Built 1 zonelists, mobility grouping on.  Total pages: 240555
[    0.000000] Kernel command line: 8250.nr_uarts=0 bcm2708_fb.fbwidth=720 bcm2708_fb.fbheight=480 bcm2708_fb.fbswap=1 vc_mem.mem_base=0x3ec00000 vc_mem.mem_size=0x40000000  dwc_otg.lpm_enable=0 console=ttyS0,115200 console=tty1 root=/dev/mmcblk0p7 rootfstype=ext4 elevator=deadline fsck.repair=yes rootwait splash plymouth.ignore-serial-consoles
[    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: 940232K/970752K available (7168K kernel code, 576K rwdata, 2076K rodata, 1024K init, 698K bss, 22328K reserved, 8192K cma-reserved)
[    0.000000] Virtual kernel memory layout:
                   vector  : 0xffff0000 - 0xffff1000   (   4 kB)
                   fixmap  : 0xffc00000 - 0xfff00000   (3072 kB)
                   vmalloc : 0xbb800000 - 0xff800000   (1088 MB)
                   lowmem  : 0x80000000 - 0xbb400000   ( 948 MB)
                   modules : 0x7f000000 - 0x80000000   (  16 MB)
                     .text : 0x80008000 - 0x80800000   (8160 kB)
                     .init : 0x80b00000 - 0x80c00000   (1024 kB)
                     .data : 0x80c00000 - 0x80c9017c   ( 577 kB)
                      .bss : 0x80c97f04 - 0x80d468b0   ( 699 kB)
[    0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=4, Nodes=1
[    0.000000] ftrace: allocating 25289 entries in 75 pages
[    0.000000] Hierarchical RCU implementation.
[    0.000000] NR_IRQS: 16, nr_irqs: 16, preallocated irqs: 16
[    0.000000] arch_timer: cp15 timer(s) running at 19.20MHz (phys).
[    0.000000] clocksource: arch_sys_counter: mask: 0xffffffffffffff max_cycles: 0x46d987e47, max_idle_ns: 440795202767 ns
[    0.000007] sched_clock: 56 bits at 19MHz, resolution 52ns, wraps every 4398046511078ns
[    0.000022] Switching to timer-based delay loop, resolution 52ns
[    0.000275] Console: colour dummy device 80x30
[    0.000815] console [tty1] enabled
[    0.000852] Calibrating delay loop (skipped), value calculated using timer frequency.. 38.40 BogoMIPS (lpj=192000)
[    0.000892] pid_max: default: 32768 minimum: 301
[    0.001227] Mount-cache hash table entries: 2048 (order: 1, 8192 bytes)
[    0.001260] Mountpoint-cache hash table entries: 2048 (order: 1, 8192 bytes)
[    0.002216] Disabling memory control group subsystem
[    0.002308] CPU: Testing write buffer coherency: ok
[    0.002739] CPU0: thread -1, cpu 0, socket 0, mpidr 80000000
[    0.003156] Setting up static identity map for 0x100000 - 0x10003c
[    0.003297] Hierarchical SRCU implementation.
[    0.003993] smp: Bringing up secondary CPUs ...
[    0.004788] CPU1: thread -1, cpu 1, socket 0, mpidr 80000001
[    0.005634] CPU2: thread -1, cpu 2, socket 0, mpidr 80000002
[    0.006459] CPU3: thread -1, cpu 3, socket 0, mpidr 80000003
[    0.006565] smp: Brought up 1 node, 4 CPUs
[    0.006638] SMP: Total of 4 processors activated (153.60 BogoMIPS).
[    0.006659] CPU: All CPU(s) started in HYP mode.
[    0.006677] CPU: Virtualization extensions available.
[    0.007612] devtmpfs: initialized
[    0.017835] random: get_random_u32 called from bucket_table_alloc+0xfc/0x24c with crng_init=0
[    0.018601] VFP support v0.3: implementor 41 architecture 3 part 40 variant 3 rev 4
[    0.018843] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[    0.018888] futex hash table entries: 1024 (order: 4, 65536 bytes)
[    0.019461] pinctrl core: initialized pinctrl subsystem
[    0.020270] NET: Registered protocol family 16
[    0.022962] DMA: preallocated 1024 KiB pool for atomic coherent allocations
[    0.027749] hw-breakpoint: found 5 (+1 reserved) breakpoint and 4 watchpoint registers.
[    0.027781] hw-breakpoint: maximum watchpoint size is 8 bytes.
[    0.028004] Serial: AMBA PL011 UART driver
[    0.029671] bcm2835-mbox 3f00b880.mailbox: mailbox enabled
[    0.030180] uart-pl011 3f201000.serial: could not find pctldev for node /soc/gpio@7e200000/uart0_pins, deferring probe
[    0.061478] bcm2835-dma 3f007000.dma: DMA legacy API manager at bb813000, dmachans=0x1
[    0.062926] SCSI subsystem initialized
[    0.063157] usbcore: registered new interface driver usbfs
[    0.063232] usbcore: registered new interface driver hub
[    0.063333] usbcore: registered new device driver usb
[    0.070079] raspberrypi-firmware soc:firmware: Attached to firmware from 2018-11-23 19:36
[    0.071501] clocksource: Switched to clocksource arch_sys_counter
[    0.147830] VFS: Disk quotas dquot_6.6.0
[    0.147943] VFS: Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
[    0.148146] FS-Cache: Loaded
[    0.148356] CacheFiles: Loaded
[    0.157170] NET: Registered protocol family 2
[    0.157906] TCP established hash table entries: 8192 (order: 3, 32768 bytes)
[    0.158036] TCP bind hash table entries: 8192 (order: 4, 65536 bytes)
[    0.158239] TCP: Hash tables configured (established 8192 bind 8192)
[    0.158384] UDP hash table entries: 512 (order: 2, 16384 bytes)
[    0.158446] UDP-Lite hash table entries: 512 (order: 2, 16384 bytes)
[    0.158691] NET: Registered protocol family 1
[    0.159173] RPC: Registered named UNIX socket transport module.
[    0.159197] RPC: Registered udp transport module.
[    0.159217] RPC: Registered tcp transport module.
[    0.159236] RPC: Registered tcp NFSv4.1 backchannel transport module.
[    0.160815] hw perfevents: enabled with armv7_cortex_a7 PMU driver, 7 counters available
[    0.163575] workingset: timestamp_bits=14 max_order=18 bucket_order=4
[    0.171475] FS-Cache: Netfs 'nfs' registered for caching
[    0.172124] NFS: Registering the id_resolver key type
[    0.172179] Key type id_resolver registered
[    0.172199] Key type id_legacy registered
[    0.172227] nfs4filelayout_init: NFSv4 File Layout Driver Registering...
[    0.174160] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 251)
[    0.174318] io scheduler noop registered
[    0.174340] io scheduler deadline registered (default)
[    0.174525] io scheduler cfq registered
[    0.174546] io scheduler mq-deadline registered
[    0.174567] io scheduler kyber registered
[    0.176863] BCM2708FB: allocated DMA memory fad00000
[    0.176908] BCM2708FB: allocated DMA channel 0 @ bb813000
[    0.187410] Console: switching to colour frame buffer device 90x30
[    0.197238] bcm2835-rng 3f104000.rng: hwrng registered
[    0.199991] vc-mem: phys_addr:0x00000000 mem_base=0x3ec00000 mem_size:0x40000000(1024 MiB)
[    0.205831] vc-sm: Videocore shared memory driver
[    0.208867] gpiomem-bcm2835 3f200000.gpiomem: Initialised: Registers at 0x3f200000
[    0.221325] brd: module loaded
[    0.232937] loop: module loaded
[    0.235827] Loading iSCSI transport class v2.0-870.
[    0.239275] libphy: Fixed MDIO Bus: probed
[    0.242153] usbcore: registered new interface driver lan78xx
[    0.244975] usbcore: registered new interface driver smsc95xx
[    0.247678] dwc_otg: version 3.00a 10-AUG-2012 (platform bus)
[    0.278272] dwc_otg 3f980000.usb: base=0xf0980000
[    0.481219] Core Release: 2.80a
[    0.483940] Setting default values for core params
[    0.486616] Finished setting default values for core params
[    0.689470] Using Buffer DMA mode
[    0.692074] Periodic Transfer Interrupt Enhancement - disabled
[    0.694771] Multiprocessor Interrupt Enhancement - disabled
[    0.697504] OTG VER PARAM: 0, OTG VER FLAG: 0
[    0.700269] Dedicated Tx FIFOs mode
[    0.703446] WARN::dwc_otg_hcd_init:1046: FIQ DMA bounce buffers: virt = 0xbad14000 dma = 0xfad14000 len=9024
[    0.709311] FIQ FSM acceleration enabled for :
               Non-periodic Split Transactions
               Periodic Split Transactions
               High-Speed Isochronous Endpoints
               Interrupt/Control Split Transaction hack enabled
[    0.723327] dwc_otg: Microframe scheduler enabled
[    0.723385] WARN::hcd_init_fiq:459: FIQ on core 1 at 0x805ea924
[    0.726098] WARN::hcd_init_fiq:460: FIQ ASM at 0x805eac8c length 36
[    0.728723] WARN::hcd_init_fiq:486: MPHI regs_base at 0xf0006000
[    0.731407] dwc_otg 3f980000.usb: DWC OTG Controller
[    0.734109] dwc_otg 3f980000.usb: new USB bus registered, assigned bus number 1
[    0.736848] dwc_otg 3f980000.usb: irq 62, io mem 0x00000000
[    0.739550] Init: Port Power? op_state=1
[    0.742263] Init: Power Port (0)
[    0.745086] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
[    0.747845] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    0.750618] usb usb1: Product: DWC OTG Controller
[    0.753384] usb usb1: Manufacturer: Linux 4.14.84-v7+ dwc_otg_hcd
[    0.756162] usb usb1: SerialNumber: 3f980000.usb
[    0.759473] hub 1-0:1.0: USB hub found
[    0.762207] hub 1-0:1.0: 1 port detected
[    0.765309] dwc_otg: FIQ enabled
[    0.765314] dwc_otg: NAK holdoff enabled
[    0.765319] dwc_otg: FIQ split-transaction FSM enabled
[    0.765328] Module dwc_common_port init
[    0.765553] usbcore: registered new interface driver usb-storage
[    0.768392] mousedev: PS/2 mouse device common for all mice
[    0.771151] IR NEC protocol handler initialized
[    0.773786] IR RC5(x/sz) protocol handler initialized
[    0.776324] IR RC6 protocol handler initialized
[    0.778832] IR JVC protocol handler initialized
[    0.781286] IR Sony protocol handler initialized
[    0.783776] IR SANYO protocol handler initialized
[    0.786264] IR Sharp protocol handler initialized
[    0.788670] IR MCE Keyboard/mouse protocol handler initialized
[    0.791097] IR XMP protocol handler initialized
[    0.794212] bcm2835-wdt 3f100000.watchdog: Broadcom BCM2835 watchdog timer
[    0.797023] bcm2835-cpufreq: min=600000 max=1400000
[    0.799882] sdhci: Secure Digital Host Controller Interface driver
[    0.802461] sdhci: Copyright(c) Pierre Ossman
[    0.805328] mmc-bcm2835 3f300000.mmc: could not get clk, deferring probe
[    0.808249] sdhost-bcm2835 3f202000.mmc: could not get clk, deferring probe
[    0.811033] sdhci-pltfm: SDHCI platform and OF driver helper
[    0.815133] ledtrig-cpu: registered to indicate activity on CPUs
[    0.817959] hidraw: raw HID events driver (C) Jiri Kosina
[    0.820794] usbcore: registered new interface driver usbhid
[    0.823488] usbhid: USB HID core driver
[    0.826720] vchiq: vchiq_init_state: slot_zero = bad80000, is_master = 0
[    0.830868] [vc_sm_connected_init]: start
[    0.840684] [vc_sm_connected_init]: end - returning 0
[    0.844056] Initializing XFRM netlink socket
[    0.846768] NET: Registered protocol family 17
[    0.849528] Key type dns_resolver registered
[    0.852707] Registering SWP/SWPB emulation handler
[    0.855963] registered taskstats version 1
[    0.864598] uart-pl011 3f201000.serial: cts_event_workaround enabled
[    0.867505] 3f201000.serial: ttyAMA0 at MMIO 0x3f201000 (irq = 87, base_baud = 0) is a PL011 rev2
[    0.875187] mmc-bcm2835 3f300000.mmc: mmc_debug:0 mmc_debug2:0
[    0.878265] mmc-bcm2835 3f300000.mmc: DMA channel allocated
[    0.942134] sdhost: log_buf @ bad13000 (fad13000)
[    0.981483] mmc1: queuing unknown CIS tuple 0x80 (2 bytes)
[    0.984593] Indeed it is in host mode hprt0 = 00021501
[    1.048833] mmc1: queuing unknown CIS tuple 0x80 (3 bytes)
[    1.053373] mmc1: queuing unknown CIS tuple 0x80 (3 bytes)
[    1.059020] mmc1: queuing unknown CIS tuple 0x80 (7 bytes)
[    1.066709] random: fast init done
[    1.071524] mmc0: sdhost-bcm2835 loaded - DMA enabled (>1)
[    1.075215] of_cfs_init
[    1.077954] of_cfs_init: OK
[    1.081080] Waiting for root device /dev/mmcblk0p7...
[    1.152464] mmc1: new high speed SDIO card at address 0001
[    1.191534] usb 1-1: new high-speed USB device number 2 using dwc_otg
[    1.194215] Indeed it is in host mode hprt0 = 00001101
[    1.266884] mmc0: host does not support reading read-only switch, assuming write-enable
[    1.273265] mmc0: new high speed SDHC card at address aaaa
[    1.276488] mmcblk0: mmc0:aaaa SC16G 14.8 GiB
[    1.285522]  mmcblk0: p1 p2 < p5 p6 p7 >
[    1.304449] EXT4-fs (mmcblk0p7): mounted filesystem with ordered data mode. Opts: (null)
[    1.310232] VFS: Mounted root (ext4 filesystem) readonly on device 179:7.
[    1.322853] devtmpfs: mounted
[    1.328969] Freeing unused kernel memory: 1024K
[    1.441811] usb 1-1: New USB device found, idVendor=0424, idProduct=2514
[    1.444762] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[    1.448266] hub 1-1:1.0: USB hub found
[    1.451201] hub 1-1:1.0: 4 ports detected
[    1.749979] systemd[1]: System time before build time, advancing clock.
[    1.771551] usb 1-1.1: new high-speed USB device number 3 using dwc_otg
[    1.868835] NET: Registered protocol family 10
[    1.873098] Segment Routing with IPv6
[    1.887232] ip_tables: (C) 2000-2006 Netfilter Core Team
[    1.909643] random: systemd: uninitialized urandom read (16 bytes read)
[    1.911850] usb 1-1.1: New USB device found, idVendor=0424, idProduct=2514
[    1.911860] usb 1-1.1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[    1.919825] hub 1-1.1:1.0: USB hub found
[    1.923213] hub 1-1.1:1.0: 3 ports detected
[    1.930167] systemd[1]: systemd 232 running in system mode. (+PAM +AUDIT +SELINUX +IMA +APPARMOR +SMACK +SYSVINIT +UTMP +LIBCRYPTSETUP +GCRYPT +GNUTLS +ACL +XZ +LZ4 +SECCOMP +BLKID +ELFUTILS +KMOD +IDN)
[    1.940612] systemd[1]: Detected architecture arm.
[    1.970715] systemd[1]: Set hostname to <raspberrypi>.
[    2.000576] random: systemd: uninitialized urandom read (16 bytes read)
[    2.023936] random: systemd-gpt-aut: uninitialized urandom read (16 bytes read)
[    2.071639] Under-voltage detected! (0x00050005)
[    2.279279] dwc_otg_handle_wakeup_detected_intr lxstate = 2
[    2.382476] systemd[1]: Listening on Journal Socket (/dev/log).
[    2.389871] systemd[1]: Listening on /dev/initctl Compatibility Named Pipe.
[    2.397620] systemd[1]: Created slice User and Session Slice.
[    2.404991] systemd[1]: Listening on udev Control Socket.
[    2.412295] systemd[1]: Listening on Journal Socket.
[    2.419467] systemd[1]: Listening on fsck to fsckd communication Socket.
[    2.426898] systemd[1]: Listening on udev Kernel Socket.
[    2.579841] i2c /dev entries driver
[    2.821632] usb 1-1.1.1: new high-speed USB device number 4 using dwc_otg
[    2.869621] EXT4-fs (mmcblk0p7): re-mounted. Opts: (null)
[    2.940799] systemd-journald[103]: Received request to flush runtime journal from PID 1
[    2.953324] usb 1-1.1.1: New USB device found, idVendor=0424, idProduct=7800
[    2.953352] usb 1-1.1.1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[    3.220106] libphy: lan78xx-mdiobus: probed
[    3.585418] snd_bcm2835: module is from the staging directory, the quality is unknown, you have been warned.
[    3.590087] bcm2835_alsa bcm2835_alsa: card created with 8 channels
[    3.859245] brcmfmac: F1 signature read @0x18000000=0x15264345
[    3.869750] brcmfmac: brcmf_fw_map_chip_to_name: using brcm/brcmfmac43455-sdio.bin for chip 0x004345(17221) rev 0x000006
[    3.870487] usbcore: registered new interface driver brcmfmac
[    4.071009] random: crng init done
[    4.071026] random: 7 urandom warning(s) missed due to ratelimiting
[    4.196658] brcmfmac: brcmf_c_preinit_dcmds: Firmware version = wl0: Feb 27 2018 03:15:32 version 7.45.154 (r684107 CY) FWID 01-4fbe0b04
[    4.197223] brcmfmac: brcmf_c_preinit_dcmds: CLM version = API: 12.2 Data: 9.10.105 Compiler: 1.29.4 ClmImport: 1.36.3 Creation: 2018-03-09 18:56:28
[    5.964690] uart-pl011 3f201000.serial: no DMA platform data
[    6.360846] Adding 102396k swap on /var/swap.  Priority:-2 extents:1 across:102396k SSFS
[    6.508308] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[    6.508361] brcmfmac: power management disabled
[    6.839579] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[    6.857079] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[   11.979959] fuse init (API version 7.26)
[   12.614752] Bluetooth: Core ver 2.22
[   12.614829] NET: Registered protocol family 31
[   12.614838] Bluetooth: HCI device and connection manager initialized
[   12.614866] Bluetooth: HCI socket layer initialized
[   12.614884] Bluetooth: L2CAP socket layer initialized
[   12.614925] Bluetooth: SCO socket layer initialized
[   12.642278] Bluetooth: HCI UART driver ver 2.3
[   12.642290] Bluetooth: HCI UART protocol H4 registered
[   12.642296] Bluetooth: HCI UART protocol Three-wire (H5) registered
[   12.642490] Bluetooth: HCI UART protocol Broadcom registered
[   13.118981] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[   13.118994] Bluetooth: BNEP filters: protocol multicast
[   13.119044] Bluetooth: BNEP socket layer initialized
[   13.226176] Bluetooth: RFCOMM TTY layer initialized
[   13.226221] Bluetooth: RFCOMM socket layer initialized
[   13.226251] Bluetooth: RFCOMM ver 1.11
[   16.363787] EXT4-fs (mmcblk0p5): mounted filesystem with ordered data mode. Opts: (null)
[   20.791711] Voltage normalised (0x00000000)
[   76.953491] Under-voltage detected! (0x00050005)
[   81.114022] Voltage normalised (0x00000000)
[  135.195344] Under-voltage detected! (0x00050005)
[  141.434834] Voltage normalised (0x00000000)