Just tested the B+
Though it is working  ( network reachable, music playing over wifi  and
Cirrus Logic Audio Card :-) )
there is a lot of chatter going on in dmesg, Not analysed all of it, but
it might be the driver is in a verbose beta mode or it is really
detecting some issue's.
let me paste in a part so you can see it too:

Code:
--------------------
    [    1.963658] usb 1-1: new high-speed USB device number 2 using dwc_otg
  [    1.963899] Indeed it is in host mode hprt0 = 00001101
  [    2.284248] usb 1-1: New USB device found, idVendor=0424, idProduct=9514, 
bcdDevice= 2.00
  [    2.284272] usb 1-1: New USB device strings: Mfr=0, Product=0, 
SerialNumber=0
  [    2.285535] hub 1-1:1.0: USB hub found
  [    2.285726] hub 1-1:1.0: 5 ports detected
  [    2.603655] usb 1-1.1: new high-speed USB device number 3 using dwc_otg
  [    2.734187] usb 1-1.1: New USB device found, idVendor=0424, 
idProduct=ec00, bcdDevice= 2.00
  [    2.734210] usb 1-1.1: New USB device strings: Mfr=0, Product=0, 
SerialNumber=0
  [    2.737599] smsc95xx v1.0.6
  [    2.844456] smsc95xx 1-1.1:1.0 eth0: register 'smsc95xx' at 
usb-20980000.usb-1.1, smsc95xx USB 2.0 Ethernet, b8:27:eb:c6:56:11
  [    2.943662] usb 1-1.2: new high-speed USB device number 4 using dwc_otg
  [    3.075322] usb 1-1.2: New USB device found, idVendor=0bda, 
idProduct=f179, bcdDevice= 0.00
  [    3.075347] usb 1-1.2: New USB device strings: Mfr=1, Product=2, 
SerialNumber=3
  [    3.075358] usb 1-1.2: Product: 802.11n
  [    3.075369] usb 1-1.2: Manufacturer: Realtek
  [    3.075379] usb 1-1.2: SerialNumber: 00E0262E538D
  [    5.785984] zram: Added device: zram0
  [    5.872669] zram0: detected capacity change from 0 to 118427648
  [    5.887396] random: mkswap: uninitialized urandom read (16 bytes read)
  [    5.905787] Adding 115648k swap on /dev/zram0.  Priority:-2 extents:1 
across:115648k SSFS
  [    6.682639] squashfs: version 4.0 (2009/01/31) Phillip Lougher
  [    8.131715] EXT4-fs (mmcblk0p2): warning: mounting fs with errors, running 
e2fsck is recommended
  [    8.148805] EXT4-fs (mmcblk0p2): recovery complete
  [    8.156995] EXT4-fs (mmcblk0p2): mounted filesystem with ordered data 
mode. Opts: (null)
  [    8.302046] EXT4-fs (mmcblk0p2): warning: mounting fs with errors, running 
e2fsck is recommended
  [    8.312301] EXT4-fs (mmcblk0p2): mounted filesystem with ordered data 
mode. Opts: (null)
  [   18.654618] snd_bcm2835: module is from the staging directory, the quality 
is unknown, you have been warned.
  [   18.755862] bcm2835_audio soc:audio: card created with 8 channels
  [   19.044242] snd-rpi-cirrus soc:sound: ASoC: CPU DAI (null) not registered 
- will retry
  [   19.061806] snd-rpi-cirrus soc:sound: ASoC: CODEC DAI wm5102-aif1 not 
registered - will retry
  [   19.919026] cfg80211: Loading compiled-in X.509 certificates for 
regulatory database
  [   20.082901] cfg80211: Loaded X.509 cert 'sforshee: 00b28ddf47aef9cea7'
  [   20.672894] rtl8188fu: loading out-of-tree module taints kernel.
  [   21.648513]
  [   21.648528] =======================================================
  [   21.648533] ==== Launching Wi-Fi driver! (Powered by Rockchip) ====
  [   21.648538] =======================================================
  [   21.648543] Realtek 8188FU USB WiFi driver (Powered by Rockchip) init.
  [   21.648548] RTL871X: module init start
  [   21.648556] RTL871X: rtl8188fu v4.3.23.6_20964.20170110
  [   21.648788] RTL871X:
  [   21.648788] usb_endpoint_descriptor(0):
  [   21.648798] RTL871X: bLength=7
  [   21.648804] RTL871X: bDescriptorType=5
  [   21.648809] RTL871X: bEndpointAddress=81
  [   21.648815] RTL871X: wMaxPacketSize=512
  [   21.648821] RTL871X: bInterval=0
  [   21.648826] RTL871X: RT_usb_endpoint_is_bulk_in = 1
  [   21.648832] RTL871X:
  [   21.648832] usb_endpoint_descriptor(1):
  [   21.648837] RTL871X: bLength=7
  [   21.648842] RTL871X: bDescriptorType=5
  [   21.648847] RTL871X: bEndpointAddress=2
  [   21.648854] RTL871X: wMaxPacketSize=512
  [   21.648859] RTL871X: bInterval=0
  [   21.648864] RTL871X: RT_usb_endpoint_is_bulk_out = 2
  [   21.648870] RTL871X:
  [   21.648870] usb_endpoint_descriptor(2):
  [   21.648875] RTL871X: bLength=7
  [   21.648880] RTL871X: bDescriptorType=5
  [   21.648885] RTL871X: bEndpointAddress=3
  [   21.648890] RTL871X: wMaxPacketSize=512
  [   21.648895] RTL871X: bInterval=0
  [   21.648900] RTL871X: RT_usb_endpoint_is_bulk_out = 3
  [   21.648907] RTL871X: nr_endpoint=3, in_num=1, out_num=2
  [   21.648907]
  [   21.648911] RTL871X: USB_SPEED_HIGH
  [   21.648919] RTL871X: CHIP TYPE: RTL8188FU
  [   21.649334] RTL871X: rtw_hal_config_rftype RF_Type is 3 TotalTxPath is 1
  [   21.649357] RTL871X: Chip Version Info: 
CHIP_8188F_Normal_Chip_SMIC_B_CUT_1T1R_RomVer(0)
  [   21.649373] RTL871X: _ConfigChipOutEP_8188F OutEpQueueSel(0x05), 
OutEpNumber(2)
  [   21.682698] RTL871X: EEPROM type is E-FUSE
  [   21.683183] RTL871X: Boot from EFUSE, Autoload OK !
  [   21.714020] RTL871X: hal_EfuseSwitchToBank: Efuse switch bank to 0
  [   22.771310] Starting piCorePlayer v6.0.0-b7 startup.
  [   23.552488] RTL871X: hal_ReadEFuse_WiFi: data end at address=0x6c
  [   23.552683] RTL871X: EEPROM VID = 0x bda
  [   23.552693] RTL871X: EEPROM PID = 0xf179
  [   23.552733] RTL871X: hal_com_config_channel_plan chplan:0x20
  [   23.552746] RTL871X: 
Hal_EfuseParsePowerSavingMode_8188F...bHWPwrPindetect(0)-bHWPowerdown(0) 
,bSupportRemoteWakeup(1)
  [   23.552753] RTL871X: ### PS params=>  power_mgnt(2),usbss_enable(0) ###
  [   23.561965] RTL871X: kfree Pwr Trim flag:0
  [   23.586703] usb 1-1.2: request firmware rtlwifi/rtl8188fufw.bin
  [   23.586897] usb 1-1.2: Direct firmware load for rtlwifi/rtl8188fufw.bin 
failed with error -2
  [   23.586920] usb 1-1.2: Firmware rtlwifi/rtl8188fufw.bin not available
  [   23.587068] RTL871X:  <=== rtl8188f_FirmwareDownload()
  [   24.085722] FAT-fs (mmcblk0p1): Volume was not properly unmounted. Some 
data may be corrupt. Please run fsck.
  [   24.385257] RTL871X: CardDisableRTL8188FU
  [   24.424163] RTL871X: hal_read_mac_hidden_rpt Fail! (60, 840ms), fwdl:1, 
id:0xfd
  [   24.424180] RTL871X: InitAdapterVariablesByPROM_8188FU(): REPLACEMENT = 0
  [   24.424188] RTL871X: rtw_hal_read_chip_info in 2780 ms
  [   24.424419] RTL871X: init_channel_set((null)) ChannelPlan ID:0x20, ch 
num:13
  [   24.425031] RTL871X: NR_RECVBUFF: 8
  [   24.425041] RTL871X: MAX_RECVBUF_SZ: 32768
  [   24.425056] RTL871X: NR_PREALLOC_RECV_SKB: 8
  [   24.425331] RTL871X: rtw_alloc_macid((null)) if1, hwaddr:ff:ff:ff:ff:ff:ff 
macid:1
  [   24.425380] RTL871X: Init_ODM_ComInfo_8188f(): fab_ver=0 cut_ver=1
  [   24.425451] RTL871X: phy_ConfigBBWithPgParaFile(): No File PHY_REG_PG.txt, 
Load from HWImg Array!
  [   24.425477] RTL871X: default power by rate loaded
  [   24.426253] RTL871X: pwrctrlpriv.bSupportRemoteWakeup~~~~~~
  [   24.426262] RTL871X: pwrctrlpriv.bSupportRemoteWakeup~~~[1]~~~
  [   24.426274] RTL871X: can't get autopm:
  [   24.426292] RTL871X: rtw_macaddr_cfg mac addr:00:e0:26:2e:53:8d
  [   24.426304] RTL871X: bDriverStopped:True, bSurpriseRemoved:False, bup:0, 
hw_init_completed:0
  [   24.426418] RTL871X: rtw_wiphy_alloc(phy0)
  [   24.426432] RTL871X: rtw_wdev_alloc(padapter=(ptrval))
  [   24.426448] RTL871X: rtw_wiphy_register(phy0)
  [   24.442517] RTL871X: rtw_ndev_init(wlan0) if1 mac_addr=00:e0:26:2e:53:8d
  [   24.444175] RTL871X: cfg80211_rtw_get_txpower
  [   24.444735] snd-rpi-cirrus soc:sound: ASoC: CODEC DAI wm5102-aif1 not 
registered - will retry
  [   24.458987] usbcore: registered new interface driver rtl8188fu
  [   24.459004] RTL871X: module init ret=0
  [   25.333694] random: crng init done
  [   25.753297] RTL871X: +871x_drv - drv_open, bup=0
  [   25.810562] RTL871X:  power-on :REG_SYS_CLKR 0x09=0xfc. REG_CR 0x100=0x3f.
  [   25.810576] RTL871X:  MAC has already power on.
  [   25.814633] usb 1-1.2: request firmware rtlwifi/rtl8188fufw.bin
  [   25.814823] usb 1-1.2: Direct firmware load for rtlwifi/rtl8188fufw.bin 
failed with error -2
  [   25.814846] usb 1-1.2: Firmware rtlwifi/rtl8188fufw.bin not available
  [   25.814993] RTL871X:  <=== rtl8188f_FirmwareDownload()
  [   25.815003] RTL871X: fw download ok!
  [   25.891727] RTL871X: PHY_MACConfig8188F OK!
  [   26.117113] RTL871X: PHY_BBConfig8188F OK!
  [   26.534439] RTL871X: PHY_RFConfig8188F OK!
  [   26.613780] RTL871X: usb_AggSettingRxUpdate: RX Aggregation USB mode, 
size=20KB, timeout=1024us
  [   26.726742] RTL871X: pDM_Odm TxPowerTrackControl = 1
  [   26.726902] RTL871X: pDM_Odm TxPowerTrackControl = 1
  [   27.869722] RTL871X: rtl8188fu_hal_init in 2120ms
  [   27.937678] RTL871X: #### hw_var_set_opmode() -5007 iface_type(0) mode = 2 
####
  [   27.939933] RTL871X: MAC Address = 00:e0:26:2e:53:8d
  [   27.946874] RTL871X: rtw_cfg80211_init_wiphy:rf_type=3
  [   27.946897] RTL871X: [HT] HAL Support STBC = 0x01
  [   27.946947] RTL871X: -871x_drv - drv_open, bup=1
  [   27.947722] RTL871X: cfg80211_rtw_set_power_mgmt(wlan0) enabled:1, 
timeout:-1
  [   28.492457] smsc95xx 1-1.1:1.0 eth0: hardware isn't capable of remote 
wakeup
  [   28.562937] RTL871X: cfg80211_rtw_get_txpower
  [   28.563216] RTL871X: cfg80211_rtw_get_txpower
  [   28.564675] RTL871X: cfg80211_rtw_get_txpower
  [   28.564902] RTL871X: cfg80211_rtw_get_txpower
  [   28.567846] RTL871X: cfg80211_rtw_get_txpower
  [   28.594014] RTL871X: cfg80211_rtw_flush_pmksa(wlan0)
  [   28.594415] RTL871X: _rtw_reg_notifier
  [   28.594436] RTL871X: _rtw_reg_notifier_apply: NL80211_REGDOM_SET_BY_USER 
to DRV
  [   28.896541] RTL871X: cfg80211_rtw_scan(wlan0)
  [   29.799091] arizona spi0.1: Failed to get mclk1: -2
  [   29.799122] arizona spi0.1: Failed to get mclk2: -2
--------------------


It goes on and on..
Code:
--------------------
    
  [  912.168151] RTL871X:  fw read cmd failed...
  [  914.241368] RTL871X:  fw read cmd failed...
  [  914.242436] RTL871X: HwRateToMRate(): Non supported Rate [ff]!!!
  
--------------------

wasn't there a diag / debug log upload feature in PCP ?  might be useful
to test that too.

M-H



Pi based multi-room audio system powered by PiCorePlayer(s):
Pi3B with Phat-dac in a Rasptouch, 2 pi B+ with Cirrus Logic Audio Card,
Pi Zero with Phat-beat ,  and a few other tests...
------------------------------------------------------------------------
M-H's Profile: http://forums.slimdevices.com/member.php?userid=66156
View this thread: http://forums.slimdevices.com/showthread.php?t=111373

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