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Analysis: Hostapd fail with Edimax adapter
#1
Problem

When using an Edimax EW-7811Un adapter hostapd starts and broadcasts the AP SSID but fails to accept client connections. The error message on the client is "Incorrect password". Repeated attempts to enter the correct password and join the AP SSID result in the same error message. This also appears to hang the network interfaces and the Pi must be power-down rebooted. Track this on Pi Linux Git: https://github.com/raspberrypi/linux/issues/2979

Result

This appears to be due to a bug or regression in the 4.19.y kernel branch. I got failures on 4.19.34 and 4.19.40 but if I revert to 4.14.98 it works fine. 

Note that When using the integrated Pi-3 series WiFi adapters hostapd works fine with the 4.19.y kernels.

Config

moOde 5.2, hostapd 2.6 or 2.7, Pi-2B, Edimax EW-7811Un, Ethernet cable plugged in.

Test commands

Code:
Activate hostapd mode manually and restart hostapd in debug mode

sudo sed -i "/AP mode/,/$p/ d" /etc/dhcpcd.conf
sudo sed -i "$ a#AP mode\ninterface wlan0\nstatic ip_address=172.24.1.1/24\nnohook wpa_supplicant" /etc/dhcpcd.conf
sudo systemctl daemon-reload
sudo systemctl restart dhcpcd
sudo systemctl start hostapd
sudo systemctl start dnsmasq

Run hostapd with debug logging

sudo systemctl stop hostapd
sudo hostapd -d /etc/hostapd/hostapd.conf

Deactivate hostapd mode

sudo sed -i "/AP mode/,/$p/ d" /etc/dhcpcd.conf
sudo sed -i "$ a#AP mode\n#interface wlan0\n#static ip_address=172.24.1.1/24\n#nohook wpa_supplicant" /etc/dhcpcd.conf
sudo systemctl daemon-reload
sudo systemctl restart dhcpcd
sudo systemctl stop hostapd
sudo systemctl stop dnsmasq

Failure Case: Kernel 4.19.40

hostapd debug logging
Code:
pi@rp6:~ $ sudo systemctl stop hostapd
pi@rp6:~ $ sudo hostapd -d /etc/hostapd/hostapd.conf
random: Trying to read entropy from /dev/random
Configuration file: /etc/hostapd/hostapd.conf
nl80211: Supported cipher 00-0f-ac:1
nl80211: Supported cipher 00-0f-ac:5
nl80211: Supported cipher 00-0f-ac:2
nl80211: Supported cipher 00-0f-ac:4
nl80211: Using driver-based off-channel TX
nl80211: interface wlan0 in phy phy0
nl80211: Set mode ifindex 3 iftype 3 (AP)
nl80211: Setup AP(wlan0) - device_ap_sme=1 use_monitor=0
nl80211: Subscribe to mgmt frames with AP handle 0x1960100 (device SME)
nl80211: Register frame type=0xd0 (WLAN_FC_STYPE_ACTION) nl_handle=0x1960100 match=04
nl80211: Register frame type=0xd0 (WLAN_FC_STYPE_ACTION) nl_handle=0x1960100 match=0501
nl80211: Register frame type=0xd0 (WLAN_FC_STYPE_ACTION) nl_handle=0x1960100 match=0504
nl80211: Register frame type=0xd0 (WLAN_FC_STYPE_ACTION) nl_handle=0x1960100 match=06
nl80211: Register frame type=0xd0 (WLAN_FC_STYPE_ACTION) nl_handle=0x1960100 match=08
nl80211: Register frame type=0xd0 (WLAN_FC_STYPE_ACTION) nl_handle=0x1960100 match=09
nl80211: Register frame type=0xd0 (WLAN_FC_STYPE_ACTION) nl_handle=0x1960100 match=0a
nl80211: Register frame type=0xd0 (WLAN_FC_STYPE_ACTION) nl_handle=0x1960100 match=11
nl80211: Register frame type=0xd0 (WLAN_FC_STYPE_ACTION) nl_handle=0x1960100 match=7f
nl80211: Enable Probe Request reporting nl_preq=0x1960160
nl80211: Register frame type=0x40 (WLAN_FC_STYPE_PROBE_REQ) nl_handle=0x1960160 match=
rfkill: initial event: idx=0 type=1 op=0 soft=0 hard=0
nl80211: Add own interface ifindex 3 (ifidx_reason -1)
nl80211: if_indices[16]: 3(-1)
phy: phy0
BSS count 1, BSSID mask 00:00:00:00:00:00 (0 bits)
nl80211: Regulatory information - country=US (DFS-FCC)
nl80211: 2402-2472 @ 40 MHz 30 mBm
nl80211: 5170-5250 @ 80 MHz 23 mBm
nl80211: 5250-5330 @ 80 MHz 23 mBm (DFS)
nl80211: 5490-5730 @ 160 MHz 23 mBm (DFS)
nl80211: 5735-5835 @ 80 MHz 30 mBm
nl80211: 57240-71000 @ 2160 MHz 40 mBm
nl80211: Added 802.11b mode based on 802.11g information
Completing interface initialization
Mode: IEEE 802.11g  Channel: 6  Frequency: 2437 MHz
DFS 0 channels required radar detection
nl80211: Set freq 2437 (ht_enabled=0, vht_enabled=0, bandwidth=20 MHz, cf1=2437 MHz, cf2=0 MHz)
 * freq=2437
 * vht_enabled=0
 * ht_enabled=0
 * channel_type=0
RATE[0] rate=10 flags=0x1
RATE[1] rate=20 flags=0x1
RATE[2] rate=55 flags=0x1
RATE[3] rate=110 flags=0x1
RATE[4] rate=60 flags=0x0
RATE[5] rate=90 flags=0x0
RATE[6] rate=120 flags=0x0
RATE[7] rate=180 flags=0x0
RATE[8] rate=240 flags=0x0
RATE[9] rate=360 flags=0x0
RATE[10] rate=480 flags=0x0
RATE[11] rate=540 flags=0x0
hostapd_setup_bss(hapd=0x195fa48 (wlan0), first=1)
wlan0: Flushing old station entries
nl80211: flush -> DEL_STATION wlan0 (all)
wlan0: Deauthenticate all stations
nl80211: sta_remove -> DEL_STATION wlan0 ff:ff:ff:ff:ff:ff --> -22 (Invalid argument)
wpa_driver_nl80211_set_key: ifindex=3 (wlan0) alg=0 addr=(nil) key_idx=0 set_tx=0 seq_len=0 key_len=0
wpa_driver_nl80211_set_key: ifindex=3 (wlan0) alg=0 addr=(nil) key_idx=1 set_tx=0 seq_len=0 key_len=0
wpa_driver_nl80211_set_key: ifindex=3 (wlan0) alg=0 addr=(nil) key_idx=2 set_tx=0 seq_len=0 key_len=0
wpa_driver_nl80211_set_key: ifindex=3 (wlan0) alg=0 addr=(nil) key_idx=3 set_tx=0 seq_len=0 key_len=0
Using interface wlan0 with hwaddr 74:da:38:0a:1b:78 and ssid "RP6"
Deriving WPA PSK based on passphrase
SSID - hexdump_ascii(len=3):
    52 50 36                                          RP6            
PSK (ASCII passphrase) - hexdump_ascii(len=10): [REMOVED]
PSK (from passphrase) - hexdump(len=32): [REMOVED]
random: Cannot read from /dev/random: Resource temporarily unavailable
random: Got 0/20 bytes from /dev/random
random: Only 0/20 bytes of strong random data available from /dev/random
random: Not enough entropy pool available for secure operations
WPA: Not enough entropy in random pool for secure operations - update keys later when the first station connects
GMK - hexdump(len=32): [REMOVED]
Key Counter - hexdump(len=32): [REMOVED]
WPA: Delay group state machine start until Beacon frames have been configured
nl80211: Set beacon (beacon_set=0)
nl80211: Beacon head - hexdump(len=54): 80 00 00 00 ff ff ff ff ff ff 74 da 38 0a 1b 78 74 da 38 0a 1b 78 00 00 00 00 00 00 00 00 00 00 64 00 11 04 00 03 52 50 36 01 08 82 84 8b 96 0c 12 18 24 03 01 06
nl80211: Beacon tail - hexdump(len=37): 2a 01 04 32 04 30 48 60 6c 30 14 01 00 00 0f ac 04 01 00 00 0f ac 04 01 00 00 0f ac 02 00 00 7f 04 00 00 00 02
nl80211: ifindex=3
nl80211: beacon_int=100
nl80211: dtim_period=2
nl80211: ssid - hexdump_ascii(len=3):
    52 50 36                                          RP6            
 * beacon_int=100
 * dtim_period=2
nl80211: hidden SSID not in use
nl80211: privacy=1
nl80211: auth_algs=0x1
nl80211: wpa_version=0x2
nl80211: key_mgmt_suites=0x2
nl80211: pairwise_ciphers=0x10
nl80211: group_cipher=0x10
nl80211: beacon_ies - hexdump(len=6): 7f 04 00 00 00 02
nl80211: proberesp_ies - hexdump(len=6): 7f 04 00 00 00 02
nl80211: assocresp_ies - hexdump(len=6): 7f 04 00 00 00 02
WPA: Start group state machine to set initial keys
WPA: group state machine entering state GTK_INIT (VLAN-ID 0)
GTK - hexdump(len=16): [REMOVED]
WPA: group state machine entering state SETKEYSDONE (VLAN-ID 0)
wpa_driver_nl80211_set_key: ifindex=3 (wlan0) alg=3 addr=0xd4108 key_idx=1 set_tx=1 seq_len=0 key_len=16
nl80211: KEY_DATA - hexdump(len=16): [REMOVED]
  broadcast key
nl80211: Set wlan0 operstate 0->1 (UP)
netlink: Operstate: ifindex=3 linkmode=-1 (no change), operstate=6 (IF_OPER_UP)
Failed to set TX queue parameters for queue 0.
Failed to set TX queue parameters for queue 1.
Failed to set TX queue parameters for queue 2.
Failed to set TX queue parameters for queue 3.
wlan0: interface state UNINITIALIZED->ENABLED
wlan0: AP-ENABLED
wlan0: Setup of interface done.
ctrl_iface not configured!
random: Got 6/20 bytes from /dev/random
random: Got 6/14 bytes from /dev/random
random: Got 6/8 bytes from /dev/random
random: Got 2/2 bytes from /dev/random

NOTE: At this point when client tries to connect it receives "Incorrect password" message and then the SSH connection hangs and no more debug lines appear in the console.

dmesg
Code:
pi@rp6:~ $ dmesg
[    0.000000] Booting Linux on physical CPU 0xf00
[    0.000000] Linux version 4.19.40-v7+ (dom@dom-XPS-13-9370) (gcc version 4.9.3 (crosstool-NG crosstool-ng-1.22.0-88-g8460611)) #1217 SMP Tue May 7 17:22:08 BST 2019
[    0.000000] CPU: ARMv7 Processor [410fc075] revision 5 (ARMv7), cr=10c5387d
[    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 2 Model B Rev 1.1
[    0.000000] Memory policy: Data cache writealloc
[    0.000000] cma: Reserved 8 MiB at 0x3ac00000
[    0.000000] On node 0 totalpages: 242688
[    0.000000]   Normal zone: 2133 pages used for memmap
[    0.000000]   Normal zone: 0 pages reserved
[    0.000000]   Normal zone: 242688 pages, LIFO batch:63
[    0.000000] random: get_random_bytes called from start_kernel+0xac/0x4b0 with crng_init=0
[    0.000000] percpu: Embedded 17 pages/cpu s39488 r8192 d21952 u69632
[    0.000000] pcpu-alloc: s39488 r8192 d21952 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: coherent_pool=1M bcm2708_fb.fbwidth=656 bcm2708_fb.fbheight=416 bcm2708_fb.fbswap=1 vc_mem.mem_base=0x3ec00000 vc_mem.mem_size=0x40000000  net.ifnames=0 dwc_otg.lpm_enable=0 console=ttyAMA0,115200 console=tty1 root=PARTUUID=7ee80803-02 rootfstype=ext4 elevator=deadline fsck.repair=yes rootwait
[    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: 939092K/970752K available (8192K kernel code, 627K rwdata, 2164K rodata, 1024K init, 821K bss, 23468K 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 : 0x(ptrval) - 0x(ptrval)   (9184 kB)
                     .init : 0x(ptrval) - 0x(ptrval)   (1024 kB)
                     .data : 0x(ptrval) - 0x(ptrval)   ( 628 kB)
                      .bss : 0x(ptrval) - 0x(ptrval)   ( 822 kB)
[    0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=4, Nodes=1
[    0.000000] ftrace: allocating 26226 entries in 77 pages
[    0.000000] rcu: 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
[    0.000010] sched_clock: 56 bits at 19MHz, resolution 52ns, wraps every 4398046511078ns
[    0.000030] Switching to timer-based delay loop, resolution 52ns
[    0.000363] Console: colour dummy device 80x30
[    0.001081] console [tty1] enabled
[    0.001157] Calibrating delay loop (skipped), value calculated using timer frequency.. 38.40 BogoMIPS (lpj=192000)
[    0.001211] pid_max: default: 32768 minimum: 301
[    0.001669] Mount-cache hash table entries: 2048 (order: 1, 8192 bytes)
[    0.001716] Mountpoint-cache hash table entries: 2048 (order: 1, 8192 bytes)
[    0.002967] CPU: Testing write buffer coherency: ok
[    0.003680] CPU0: update cpu_capacity 1024
[    0.003721] CPU0: thread -1, cpu 0, socket 15, mpidr 80000f00
[    0.004747] Setting up static identity map for 0x100000 - 0x10003c
[    0.005007] rcu: Hierarchical SRCU implementation.
[    0.006199] smp: Bringing up secondary CPUs ...
[    0.007513] CPU1: update cpu_capacity 1024
[    0.007525] CPU1: thread -1, cpu 1, socket 15, mpidr 80000f01
[    0.008953] CPU2: update cpu_capacity 1024
[    0.008966] CPU2: thread -1, cpu 2, socket 15, mpidr 80000f02
[    0.010363] CPU3: update cpu_capacity 1024
[    0.010374] CPU3: thread -1, cpu 3, socket 15, mpidr 80000f03
[    0.010549] smp: Brought up 1 node, 4 CPUs
[    0.010706] SMP: Total of 4 processors activated (153.60 BogoMIPS).
[    0.010734] CPU: All CPU(s) started in HYP mode.
[    0.010758] CPU: Virtualization extensions available.
[    0.012076] devtmpfs: initialized
[    0.026200] VFP support v0.3: implementor 41 architecture 2 part 30 variant 7 rev 5
[    0.026613] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[    0.026678] futex hash table entries: 1024 (order: 4, 65536 bytes)
[    0.027553] pinctrl core: initialized pinctrl subsystem
[    0.028904] NET: Registered protocol family 16
[    0.032575] DMA: preallocated 1024 KiB pool for atomic coherent allocations
[    0.040076] hw-breakpoint: found 5 (+1 reserved) breakpoint and 4 watchpoint registers.
[    0.040132] hw-breakpoint: maximum watchpoint size is 8 bytes.
[    0.040426] Serial: AMBA PL011 UART driver
[    0.043401] bcm2835-mbox 3f00b880.mailbox: mailbox enabled
[    0.089736] bcm2835-dma 3f007000.dma: DMA legacy API manager at (ptrval), dmachans=0x1
[    0.092064] SCSI subsystem initialized
[    0.092425] usbcore: registered new interface driver usbfs
[    0.092529] usbcore: registered new interface driver hub
[    0.092713] usbcore: registered new device driver usb
[    0.110298] raspberrypi-firmware soc:firmware: Attached to firmware from 2019-03-27 15:45, variant start
[    0.120549] raspberrypi-firmware soc:firmware: Firmware hash is 2e98b31d18547962e564bdf88e57b3df7085c29b
[    0.132463] clocksource: Switched to clocksource arch_sys_counter
[    0.236600] VFS: Disk quotas dquot_6.6.0
[    0.236751] VFS: Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
[    0.237030] FS-Cache: Loaded
[    0.237371] CacheFiles: Loaded
[    0.251822] NET: Registered protocol family 2
[    0.253050] tcp_listen_portaddr_hash hash table entries: 512 (order: 0, 6144 bytes)
[    0.253134] TCP established hash table entries: 8192 (order: 3, 32768 bytes)
[    0.253287] TCP bind hash table entries: 8192 (order: 4, 65536 bytes)
[    0.253499] TCP: Hash tables configured (established 8192 bind 8192)
[    0.253715] UDP hash table entries: 512 (order: 2, 16384 bytes)
[    0.253814] UDP-Lite hash table entries: 512 (order: 2, 16384 bytes)
[    0.254356] NET: Registered protocol family 1
[    0.255303] RPC: Registered named UNIX socket transport module.
[    0.255346] RPC: Registered udp transport module.
[    0.255372] RPC: Registered tcp transport module.
[    0.255397] RPC: Registered tcp NFSv4.1 backchannel transport module.
[    0.257675] hw perfevents: enabled with armv7_cortex_a7 PMU driver, 5 counters available
[    0.261900] Initialise system trusted keyrings
[    0.262300] workingset: timestamp_bits=14 max_order=18 bucket_order=4
[    0.275646] FS-Cache: Netfs 'nfs' registered for caching
[    0.276540] NFS: Registering the id_resolver key type
[    0.276615] Key type id_resolver registered
[    0.276642] Key type id_legacy registered
[    0.276683] nfs4filelayout_init: NFSv4 File Layout Driver Registering...
[    0.280003] Key type asymmetric registered
[    0.280050] Asymmetric key parser 'x509' registered
[    0.280150] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 250)
[    0.280411] io scheduler noop registered
[    0.280445] io scheduler deadline registered (default)
[    0.280733] io scheduler cfq registered
[    0.280768] io scheduler mq-deadline registered (default)
[    0.280797] io scheduler kyber registered
[    0.283977] BCM2708FB: allocated DMA memory 0xfad00000
[    0.284079] BCM2708FB: allocated DMA channel 0
[    0.295691] Console: switching to colour frame buffer device 82x26
[    0.306081] bcm2835-rng 3f104000.rng: hwrng registered
[    0.308856] vc-mem: phys_addr:0x00000000 mem_base=0x3ec00000 mem_size:0x40000000(1024 MiB)
[    0.314908] vc-sm: Videocore shared memory driver
[    0.317980] gpiomem-bcm2835 3f200000.gpiomem: Initialised: Registers at 0x3f200000
[    0.339368] brd: module loaded
[    0.356602] loop: module loaded
[    0.359307] Loading iSCSI transport class v2.0-870.
[    0.363053] libphy: Fixed MDIO Bus: probed
[    0.365831] usbcore: registered new interface driver lan78xx
[    0.368542] usbcore: registered new interface driver smsc95xx
[    0.371044] dwc_otg: version 3.00a 10-AUG-2012 (platform bus)
[    0.401608] dwc_otg 3f980000.usb: base=(ptrval)
[    0.604549] Core Release: 2.80a
[    0.607072] Setting default values for core params
[    0.609667] Finished setting default values for core params
[    0.812697] Using Buffer DMA mode
[    0.815277] Periodic Transfer Interrupt Enhancement - disabled
[    0.817986] Multiprocessor Interrupt Enhancement - disabled
[    0.820678] OTG VER PARAM: 0, OTG VER FLAG: 0
[    0.823359] Dedicated Tx FIFOs mode
[    0.826723] WARN::dwc_otg_hcd_init:1045: FIQ DMA bounce buffers: virt = bad14000 dma = 0xfad14000 len=9024
[    0.831916] FIQ FSM acceleration enabled for :
               Non-periodic Split Transactions
               Periodic Split Transactions
               High-Speed Isochronous Endpoints
               Interrupt/Control Split Transaction hack enabled
[    0.844276] dwc_otg: Microframe scheduler enabled
[    0.844363] WARN::hcd_init_fiq:457: FIQ on core 1
[    0.846887] WARN::hcd_init_fiq:458: FIQ ASM at 8064b88c length 36
[    0.849393] WARN::hcd_init_fiq:484: MPHI regs_base at f0006000
[    0.852017] dwc_otg 3f980000.usb: DWC OTG Controller
[    0.854631] dwc_otg 3f980000.usb: new USB bus registered, assigned bus number 1
[    0.857277] dwc_otg 3f980000.usb: irq 56, io mem 0x00000000
[    0.859881] Init: Port Power? op_state=1
[    0.862415] Init: Power Port (0)
[    0.865287] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 4.19
[    0.870396] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    0.873167] usb usb1: Product: DWC OTG Controller
[    0.875854] usb usb1: Manufacturer: Linux 4.19.40-v7+ dwc_otg_hcd
[    0.878596] usb usb1: SerialNumber: 3f980000.usb
[    0.882135] hub 1-0:1.0: USB hub found
[    0.884786] hub 1-0:1.0: 1 port detected
[    0.888056] dwc_otg: FIQ enabled
[    0.888065] dwc_otg: NAK holdoff enabled
[    0.888072] dwc_otg: FIQ split-transaction FSM enabled
[    0.888087] Module dwc_common_port init
[    0.888500] usbcore: registered new interface driver usb-storage
[    0.891393] mousedev: PS/2 mouse device common for all mice
[    0.895218] bcm2835-wdt 3f100000.watchdog: Broadcom BCM2835 watchdog timer
[    0.898325] bcm2835-cpufreq: min=600000 max=900000
[    0.901663] sdhci: Secure Digital Host Controller Interface driver
[    0.904477] sdhci: Copyright(c) Pierre Ossman
[    0.907753] sdhost-bcm2835 3f202000.mmc: could not get clk, deferring probe
[    0.910810] sdhci-pltfm: SDHCI platform and OF driver helper
[    0.914588] ledtrig-cpu: registered to indicate activity on CPUs
[    0.917660] hidraw: raw HID events driver (C) Jiri Kosina
[    0.920824] usbcore: registered new interface driver usbhid
[    0.923793] usbhid: USB HID core driver
[    0.927630] vchiq: vchiq_init_state: slot_zero = (ptrval), is_master = 0
[    0.932517] [vc_sm_connected_init]: start
[    0.941644] [vc_sm_connected_init]: end - returning 0
[    0.945932] Initializing XFRM netlink socket
[    0.948694] NET: Registered protocol family 17
[    0.951542] Key type dns_resolver registered
[    0.954777] Registering SWP/SWPB emulation handler
[    0.958486] registered taskstats version 1
[    0.961231] Loading compiled-in X.509 certificates
[    0.973708] uart-pl011 3f201000.serial: cts_event_workaround enabled
[    0.976631] 3f201000.serial: ttyAMA0 at MMIO 0x3f201000 (irq = 81, base_baud = 0) is a PL011 rev2
[    1.982153] console [ttyAMA0] enabled
[    1.991298] sdhost: log_buf @ (ptrval) (fad13000)
[    2.045936] mmc0: sdhost-bcm2835 loaded - DMA enabled (>1)
[    2.055959] of_cfs_init
[    2.061153] of_cfs_init: OK
[    2.067482] Waiting for root device PARTUUID=7ee80803-02...
[    2.093502] Indeed it is in host mode hprt0 = 00021501
[    2.190226] random: fast init done
[    2.201498] mmc0: host does not support reading read-only switch, assuming write-enable
[    2.219057] mmc0: new high speed SDHC card at address aaaa
[    2.228871] mmcblk0: mmc0:aaaa SL08G 7.40 GiB
[    2.239330]  mmcblk0: p1 p2
[    2.259035] EXT4-fs (mmcblk0p2): INFO: recovery required on readonly filesystem
[    2.269268] EXT4-fs (mmcblk0p2): write access will be enabled during recovery
[    2.302519] usb 1-1: new high-speed USB device number 2 using dwc_otg
[    2.312059] Indeed it is in host mode hprt0 = 00001101
[    2.495746] EXT4-fs (mmcblk0p2): orphan cleanup on readonly fs
[    2.504914] EXT4-fs (mmcblk0p2): 2 orphan inodes deleted
[    2.513121] EXT4-fs (mmcblk0p2): recovery complete
[    2.547605] EXT4-fs (mmcblk0p2): mounted filesystem with ordered data mode. Opts: (null)
[    2.561325] VFS: Mounted root (ext4 filesystem) readonly on device 179:2.
[    2.562919] usb 1-1: New USB device found, idVendor=0424, idProduct=9514, bcdDevice= 2.00
[    2.580734] devtmpfs: mounted
[    2.585092] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[    2.602607] hub 1-1:1.0: USB hub found
[    2.603188] Freeing unused kernel memory: 1024K
[    2.609569] hub 1-1:1.0: 5 ports detected
[    2.624198] Run /sbin/init as init process
[    2.942547] usb 1-1.1: new high-speed USB device number 3 using dwc_otg
[    3.082882] usb 1-1.1: New USB device found, idVendor=0424, idProduct=ec00, bcdDevice= 2.00
[    3.097217] usb 1-1.1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[    3.110685] smsc95xx v1.0.6
[    3.117048] systemd[1]: System time before build time, advancing clock.
[    3.207375] smsc95xx 1-1.1:1.0 eth0: register 'smsc95xx' at usb-3f980000.usb-1.1, smsc95xx USB 2.0 Ethernet, b8:27:eb:ca:82:f9
[    3.286630] NET: Registered protocol family 10
[    3.296407] Segment Routing with IPv6
[    3.322543] usb 1-1.4: new high-speed USB device number 4 using dwc_otg
[    3.344985] random: systemd: uninitialized urandom read (16 bytes read)
[    3.358575] random: systemd: uninitialized urandom read (16 bytes read)
[    3.376132] 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)
[    3.404475] systemd[1]: Detected architecture arm.
[    3.432896] systemd[1]: Set hostname to <rp6>.
[    3.483957] usb 1-1.4: New USB device found, idVendor=7392, idProduct=7811, bcdDevice= 2.00
[    3.499490] usb 1-1.4: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[    3.510757] usb 1-1.4: Product: 802.11n WLAN Adapter
[    3.516588] random: systemd-cryptse: uninitialized urandom read (16 bytes read)
[    3.519156] usb 1-1.4: Manufacturer: Realtek
[    3.538016] usb 1-1.4: SerialNumber: 00e04c000001
[    3.555902] uart-pl011 3f201000.serial: no DMA platform data
[    4.192422] systemd[1]: Listening on Syslog Socket.
[    4.205215] systemd[1]: Listening on udev Kernel Socket.
[    4.218565] systemd[1]: Created slice User and Session Slice.
[    4.232152] systemd[1]: Created slice System Slice.
[    4.248774] systemd[1]: Mounting POSIX Message Queue File System...
[    4.268054] systemd[1]: Mounting RPC Pipe File System...
[    4.282854] systemd[1]: Created slice system-serial\x2dgetty.slice.
[    4.942443] EXT4-fs (mmcblk0p2): re-mounted. Opts: (null)
[    5.061298] systemd-journald[115]: Received request to flush runtime journal from PID 1
[    5.640846] vc_sm_cma: module is from the staging directory, the quality is unknown, you have been warned.
[    5.644042] bcm2835_vc_sm_cma_probe: Videocore shared memory driver
[    5.644062] [vc_sm_connected_init]: start
[    5.658592] [vc_sm_connected_init]: installed successfully
[    5.669712] media: Linux media interface: v0.10
[    5.721271] videodev: Linux video capture interface: v2.00
[    5.755813] snd_bcm2835: module is from the staging directory, the quality is unknown, you have been warned.
[    5.777651] bcm2835_mmal_vchiq: module is from the staging directory, the quality is unknown, you have been warned.
[    5.777656] bcm2835_mmal_vchiq: module is from the staging directory, the quality is unknown, you have been warned.
[    5.801808] bcm2835_codec: module is from the staging directory, the quality is unknown, you have been warned.
[    5.804558] bcm2835_v4l2: module is from the staging directory, the quality is unknown, you have been warned.
[    5.812834] bcm2835-codec bcm2835-codec: Device registered as /dev/video10
[    5.812853] bcm2835-codec bcm2835-codec: Loaded V4L2 decode
[    5.817146] bcm2835_audio soc:audio: card created with 8 channels
[    6.308524] cfg80211: Loading compiled-in X.509 certificates for regulatory database
[    6.424505] cfg80211: Loaded X.509 cert 'sforshee: 00b28ddf47aef9cea7'
[    6.435557] bcm2835-codec bcm2835-codec: Device registered as /dev/video11
[    6.435579] bcm2835-codec bcm2835-codec: Loaded V4L2 encode
[    6.441883] bcm2835-codec bcm2835-codec: Device registered as /dev/video12
[    6.441902] bcm2835-codec bcm2835-codec: Loaded V4L2 isp
[    6.875854] usbcore: registered new interface driver rtl8192cu
[    8.014572] smsc95xx 1-1.1:1.0 eth0: hardware isn't capable of remote wakeup
[    8.679478] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[    9.507952] smsc95xx 1-1.1:1.0 eth0: link up, 100Mbps, full-duplex, lpa 0xCDE1
pi@rp6:~ $ 
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