Hello dear Oma, i trying to port your firmware with android 4.4.2 RK3188 on my tablet DNS M100qw RK3188, everything works except wifi, i have chip - mt6620 combo driver; I copied all modules from stock in port(system/lib/modules), edited init.rc from port - added lines about mt6620 from stock; lsmod showed me - all modules run, exactly as stock firmware, but wifi is not work, help please, i can send you dmesg log from port and from stock:)

I am having an issue with USB Hubs (both 7 ports self powered and 4 ports versions), it seems they are recognized but ignored.

dmesg:

[ 3088.403313] usb 1-1: new high speed USB device number 2 using usb20_otg
[ 3088.614499] usb 1-1: New USB device found, idVendor=14cd, idProduct=8601
[ 3088.614558] usb 1-1: New USB device strings: Mfr=1, Product=3, SerialNumber=0
[ 3088.614609] usb 1-1: Product: USB 2.0 Hub
[ 3088.614648] usb 1-1: Manufacturer: USB Device
[ 3088.616230] hub 1-1:1.0: ignoring external hub

(this USB HUB works fine with 4.4.4 Android in Sony tablet)

Otherwise, USB OTG works fine. And connected one at a time USB devices work OK (gamepad, memory stick etc..). The issue is with the Hub alone.

With Hub connected to tablet, USB Device Info App (same goes with USB Host Diagnostics) App reports:

- KERNEL section: connected USB devices are identified and shown (but do not actually work)

- API section: No Devices Detected

So, it seems to be some sort of configuration issue.

I found this info elsewhere, not sure if it applies:

"If arnova used the RK kernel was compiled blacklisting usb hubs they will be ignored. In .config we have this line:
CONFIG_USB_OTG_BLACKLIST_HUB=y"

Does anyone have a clue on how to fix this?

PS:  I am running 1.4.1 with qilive97 kernel.