Raspberry Pi Zero、HDMIディスプレイ無しだとどうしよう

Raspberry Pi Zeroの火入れ。
Zero単体ではなくセットを購入していて良かったのはケース付属な点ではなかった、mini HDMIとHDMIの変換コネクタが付属していた点だった。
microHDMIのケーブルは持っていたものの、nimi HDMIは持っていなかったという。
USBにしろSIMにしろHDMIにしろ、通常、mini、microと3種類用意するのは勘弁してほしい。財布に優しくない。。。
とりあえず、キーボード、マウスもmicro USBから変換して使用。
全部変換したら、スマートなRaspberry Pi Zeroがスマートでは無い姿になってしまった。
やっぱり、Internetに繋がって欲しいですね。


HDMIでコンソール写ってくれてもそんなに嬉しさがなかった。。。
こういう使い方の為にZeroを買ったんじゃなかった。


HDMIが繋がらなかったらどうするのかという事で、やはり行き着く先はシリアルコンソールだった。。。
いや、落ち着く。
接続はピンヘッダ6(GND), 8(TX), 10(RX)です。速度は、115,200。(確認はRaspbian Jessie lite)


コンソールにアクセスできたしいいんだけど、Internetに繋がってないからapt-getもできないな。
うーん、やっぱりInternetに出たい。

Uncompressing Linux... done, booting the kernel.
[    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 4.1.13+ (dc4@dc4-XPS13-9333) (gcc version 4.8.3 20140303 (prerelease) (crosstool-NG linaro-1.13.1+bzr2650 - Linaro GCC 2014.03) ) #826 PREEMPT Fri Nov 13 20:13:22 GMT 2015
[    0.000000] CPU: ARMv6-compatible processor [410fb767] revision 7 (ARMv7), cr=00c5387d
[    0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT nonaliasing instruction cache
[    0.000000] Machine model: Raspberry Pi ? Rev 1.2
[    0.000000] cma: Reserved 8 MiB at 0x1b800000
[    0.000000] Memory policy: Data cache writeback
[    0.000000] Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 113680
[    0.000000] Kernel command line: dma.dmachans=0x7f35 bcm2708_fb.fbwidth=656 bcm2708_fb.fbheight=416 bcm2708.boardrev=0x900092 bcm2708.serial=0x483178a3 smsc95xx.macaddr=B8:27:EB:31:78:A3 bcm2708_fb.fbswap=1 bcm2708.disk_led_gpio=47 sdhci-bcm2708.emmc_clock_freq=250000000 vc_mem.mem_base=0x1ec00000 vc_mem.mem_size=0x20000000  dwc_otg.lpm_enable=0 console=ttyAMA0,115200 console=tty1 root=/dev/mmcblk0p2 rootfstype=ext4 elevator=deadline fsck.repair=yes rootwait
[    0.000000] PID hash table entries: 2048 (order: 1, 8192 bytes)
[    0.000000] Dentry cache hash table entries: 65536 (order: 6, 262144 bytes)
[    0.000000] Inode-cache hash table entries: 32768 (order: 5, 131072 bytes)
[    0.000000] Memory: 436488K/458752K available (6137K kernel code, 489K rwdata, 1788K rodata, 352K init, 720K bss, 14072K reserved, 8192K cma-reserved)
[    0.000000] Virtual kernel memory layout:
[    0.000000]     vector  : 0xffff0000 - 0xffff1000   (   4 kB)
[    0.000000]     fixmap  : 0xffc00000 - 0xfff00000   (3072 kB)
[    0.000000]     vmalloc : 0xdc800000 - 0xff000000   ( 552 MB)
[    0.000000]     lowmem  : 0xc0000000 - 0xdc000000   ( 448 MB)
[    0.000000]     modules : 0xbf000000 - 0xc0000000   (  16 MB)
[    0.000000]       .text : 0xc0008000 - 0xc07c5630   (7926 kB)
[    0.000000]       .init : 0xc07c6000 - 0xc081e000   ( 352 kB)
[    0.000000]       .data : 0xc081e000 - 0xc08987e4   ( 490 kB)
[    0.000000]        .bss : 0xc08987e4 - 0xc094c980   ( 721 kB)
[    0.000000] SLUB: HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
[    0.000000] Preemptible hierarchical RCU implementation.
[    0.000000] 	Additional per-CPU info printed with stalls.
[    0.000000] NR_IRQS:522
[    0.000000] clocksource stc: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 1911260446275 ns
[    0.000015] sched_clock: 32 bits at 1000kHz, resolution 1000ns, wraps every 2147483647500ns
[    0.000058] Switching to timer-based delay loop, resolution 1000ns
[    0.000341] Console: colour dummy device 80x30
[    0.001730] console [tty1] enabled
[    0.001794] Calibrating delay loop (skipped), value calculated using timer frequency.. 2.00 BogoMIPS (lpj=10000)
[    0.001892] pid_max: default: 32768 minimum: 301
[    0.002263] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)
[    0.002345] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes)
[    0.003441] Initializing cgroup subsys blkio
[    0.003539] Initializing cgroup subsys memory
[    0.003615] Initializing cgroup subsys devices
[    0.003683] Initializing cgroup subsys freezer
[    0.003748] Initializing cgroup subsys net_cls
[    0.003873] CPU: Testing write buffer coherency: ok
[    0.004003] ftrace: allocating 19796 entries in 59 pages
[    0.111222] Setting up static identity map for 0x81c0 - 0x81f8
[    0.114059] devtmpfs: initialized
[    0.124572] VFP support v0.3: implementor 41 architecture 1 part 20 variant b rev 5
[    0.125050] clocksource jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[    0.127055] pinctrl core: initialized pinctrl subsystem
[    0.127966] NET: Registered protocol family 16
[    0.133571] DMA: preallocated 4096 KiB pool for atomic coherent allocations
[    0.135147] bcm2708.uart_clock = 3000000
[    0.140003] hw-breakpoint: found 6 breakpoint and 1 watchpoint registers.
[    0.140090] hw-breakpoint: maximum watchpoint size is 4 bytes.
[    0.140283] Serial: AMBA PL011 UART driver
[    0.140589] 20201000.uart: ttyAMA0 at MMIO 0x20201000 (irq = 83, base_baud = 0) is a PL011 rev2
[    0.526378] console [ttyAMA0] enabled
[    0.530794] bcm2835-mbox 2000b880.mailbox: mailbox enabled
[    0.598961] bcm2708-dmaengine 20007000.dma: DMA legacy API manager at f2007000, dmachans=0xf35
[    0.607843] bcm2708-dmaengine 20007000.dma: Initialized 7 DMA channels (+ 1 legacy)
[    0.616363] bcm2708-dmaengine 20007000.dma: Load BCM2835 DMA engine driver
[    0.623357] bcm2708-dmaengine 20007000.dma: dma_debug:0
[    0.629487] SCSI subsystem initialized
[    0.633722] usbcore: registered new interface driver usbfs
[    0.639379] usbcore: registered new interface driver hub
[    0.645002] usbcore: registered new device driver usb
[    0.651052] raspberrypi-firmware soc:firmware: Attached to firmware from 2015-11-18 15:43
[    0.686879] Switched to clocksource stc
[    0.738271] FS-Cache: Loaded
[    0.741597] CacheFiles: Loaded
[    0.760917] NET: Registered protocol family 2
[    0.766805] TCP established hash table entries: 4096 (order: 2, 16384 bytes)
[    0.774264] TCP bind hash table entries: 4096 (order: 2, 16384 bytes)
[    0.780897] TCP: Hash tables configured (established 4096 bind 4096)
[    0.787436] UDP hash table entries: 256 (order: 0, 4096 bytes)
[    0.793335] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
[    0.800065] NET: Registered protocol family 1
[    0.805093] RPC: Registered named UNIX socket transport module.
[    0.811214] RPC: Registered udp transport module.
[    0.815960] RPC: Registered tcp transport module.
[    0.820741] RPC: Registered tcp NFSv4.1 backchannel transport module.
[    0.828593] hw perfevents: enabled with armv6_1176 PMU driver, 3 counters available
[    0.837919] futex hash table entries: 256 (order: -1, 3072 bytes)
[    0.860352] VFS: Disk quotas dquot_6.6.0
[    0.864762] VFS: Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
[    0.874485] FS-Cache: Netfs 'nfs' registered for caching
[    0.881557] NFS: Registering the id_resolver key type
[    0.886781] Key type id_resolver registered
[    0.891147] Key type id_legacy registered
[    0.899226] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 252)
[    0.907292] io scheduler noop registered
[    0.911295] io scheduler deadline registered (default)
[    0.916847] io scheduler cfq registered
[    0.923368] BCM2708FB: allocated DMA memory 5bc00000
[    0.928717] BCM2708FB: allocated DMA channel 0 @ f2007000
[    0.939455] Console: switching to colour frame buffer device 82x26
[    0.950839] Serial: 8250/16550 driver, 0 ports, IRQ sharing disabled
[    0.960750] vc-cma: Videocore CMA driver
[    0.966465] vc-cma: vc_cma_base      = 0x00000000
[    0.973010] vc-cma: vc_cma_size      = 0x00000000 (0 MiB)
[    0.980175] vc-cma: vc_cma_initial   = 0x00000000 (0 MiB)
[    0.987629] vc-mem: phys_addr:0x00000000 mem_base=0x1ec00000 mem_size:0x20000000(512 MiB)
[    1.018832] brd: module loaded
[    1.032886] loop: module loaded
[    1.038933] vchiq: vchiq_init_state: slot_zero = 0xdbc80000, is_master = 0
[    1.049704] Loading iSCSI transport class v2.0-870.
[    1.057934] usbcore: registered new interface driver smsc95xx
[    1.065476] dwc_otg: version 3.00a 10-AUG-2012 (platform bus)
[    1.273191] Core Release: 2.80a
[    1.277999] Setting default values for core params
[    1.284346] Finished setting default values for core params
[    1.491880] Using Buffer DMA mode
[    1.496780] Periodic Transfer Interrupt Enhancement - disabled
[    1.504233] Multiprocessor Interrupt Enhancement - disabled
[    1.511475] OTG VER PARAM: 0, OTG VER FLAG: 0
[    1.517477] Dedicated Tx FIFOs mode
[    1.523018] WARN::dwc_otg_hcd_init:1047: FIQ DMA bounce buffers: vi[    3.279515] systemd[1]: Cannot add dependency job for unit display-manager.service, ignoring: Unit display-manager.service failed to load: No such file or directory.
[    3.305921] systemd[1]: Expecting device dev-ttyAMA0.device...
[    3.317636] systemd[1]: Starting Forward Password Requests to Wall Directory Watch.
[    3.329927] systemd[1]: Started Forward Password Requests to Wall Directory Watch.
[    3.341799] systemd[1]: Starting Remote File Systems (Pre).
[    3.352352] systemd[1]: Reached target Remote File Systems (Pre).
[    3.361046] systemd[1]: Starting Arbitrary Executable File Formats File System Automount Point.
[    3.377773] systemd[1]: Set up automount Arbitrary Executable File Formats File System Automount Point.
[    3.391737] systemd[1]: Starting Encrypted Volumes.
[    3.401919] systemd[1]: Reached target Encrypted Volumes.
[    3.409935] systemd[1]: Starting Swap.
[    3.418856] systemd[1]: Reached target Swap.
[    3.425372] systemd[1]: Expecting device dev-mmcblk0p1.device...
[    3.436336] systemd[1]: Starting Root Slice.
[    3.445640] systemd[1]: Created slice Root Slice.
[    3.452647] systemd[1]: Starting User and Session Slice.
[    3.463045] systemd[1]: Created slice User and Session Slice.
[    3.471059] systemd[1]: Starting /dev/initctl Compatibility Named Pipe.
[    3.482793] systemd[1]: Listening on /dev/initctl Compatibility Named Pipe.
[    3.492025] systemd[1]: Starting Delayed Shutdown Socket.
[    3.502218] systemd[1]: Listening on Delayed Shutdown Socket.
[    3.510129] systemd[1]: Starting Journal Socket (/dev/log).
[    3.520543] systemd[1]: Listening on Journal Socket (/dev/log).
[    3.528770] systemd[1]: Starting udev Control Socket.
[    3.538710] systemd[1]: Listening on udev Control Socket.
[    3.546187] systemd[1]: Starting udev Kernel Socket.
[    3.555871] systemd[1]: Listening on udev Kernel Socket.
[    3.563447] systemd[1]: Starting Journal Socket.
[    3.572995] systemd[1]: Listening on Journal Socket.
[    3.580329] systemd[1]: Starting System Slice.
[    3.589711] systemd[1]: Created slice System Slice.
[    3.596717] systemd[1]: Starting File System Check on Root Device...
[    3.612473] systemd[1]: Starting system-systemd\x2dfsck.slice.
[    3.634283] systemd[1]: Created slice system-systemd\x2dfsck.slice.
[    3.648971] systemd[1]: Starting system-getty.slice.
[    3.664304] systemd[1]: Created slice system-getty.slice.
[    3.673467] systemd[1]: Starting system-serial\x2dgetty.slice.
[    3.689708] systemd[1]: Created slice system-serial\x2dgetty.slice.
[    3.699295] systemd[1]: Starting Increase datagram queue length...
[    3.725140] systemd[1]: Starting Restore / save the current clock...
[    3.761834] systemd[1]: Starting udev Coldplug all Devices...
[    3.814045] systemd[1]: Starting Create list of required static device nodes for the current kernel...
[    3.905467] systemd[1]: Starting Load Kernel Modules...
[    4.014144] systemd[1]: Started Set Up Additional Binary Formats.
[    4.059814] systemd[1]: Mounted Huge Pages File System.
[    4.115849] systemd[1]: Mounting Debug File System...
[    4.156721] systemd[1]: Mounting POSIX Message Queue File System...
[    4.191131] systemd[1]: Starting Slices.
[    4.217213] systemd[1]: Reached target Slices.
[    4.253008] systemd[1]: Mounted POSIX Message Queue File System.
[    4.272806] systemd[1]: Mounted Debug File System.
[    4.286619] systemd[1]: Started File System Check on Root Device.
[    4.315915] systemd[1]: Started Increase datagram queue length.
[    4.329536] systemd[1]: Started Restore / save the current clock.
[    4.357885] systemd[1]: Started Create list of required static device nodes for the current kernel.
[    4.392267] systemd[1]: Started Load Kernel Modules.
[    4.423612] systemd[1]: Time has been changed
[    4.546125] systemd[1]: Started udev Coldplug all Devices.
[    4.767955] systemd[1]: Starting Apply Kernel Variables...
[    4.784555] systemd[1]: Mounting Configuration File System...
[    4.811402] systemd[1]: Mounted FUSE Control File System.

Raspbian GNU/Linux 8 raspberrypi ttyAMA0

raspberrypi login: