[G Pad 8.3 Q&A, Help & Troubleshooting] id10terror:
I'm having the same issue on my G Pad with the Logitech K400r pad\keyboard. I tried the same cable and dongle on my LG G2 and it worked just fine. Anyone get it to work on the G Pad?

Ran DMESG and saw this

<6>[ 4926.086242 / 03-05 01:59:11.347] msm_otg msm_otg: phy_reset: success

<6>[ 4926.192260 / 03-05 01:59:11.457] msm_otg_reset: pm usb id pull_up(0)

<6>[ 4926.196014 / 03-05 01:59:11.457] msm_otg msm_otg: USB in low power mode

<6>[ 4926.700622 / 03-05 01:59:11.958] msm_pmic_id_irq: INTERRUPT !

<6>[ 4926.701049 / 03-05 01:59:11.958] anx7808_cbl_det_isr : detect cable removal

<6>[ 4926.892120 / 03-05 01:59:12.158] msm_pmic_id_w: INTERRUPT !

<6>[ 4926.892547 / 03-05 01:59:12.158] msm_pmic_id_w: ID clear - otg cable is inserted

<6>[ 4926.906280 / 03-05 01:59:12.168] msm_otg msm_otg: USB exited from low power mode

<6>[ 4926.906677 / 03-05 01:59:12.168] otg_gender_is_connected: check if an otg gender is connected.

<6>[ 4926.907073 / 03-05 01:59:12.168] regulator_disable (ext_mpp8) success ! USB_ID -> DEVICE_ID

<6>[ 4926.909332 / 03-05 01:59:12.168] regulator_enable (ext_mpp8) success ! USB_ID -> HOST_ID

<6>[ 4926.909698 / 03-05 01:59:12.168] adc value: 695

<6>[ 4926.909881 / 03-05 01:59:12.168] otg gender is connected

<6>[ 4927.022552 / 03-05 01:59:12.288] msm_hsusb_host msm_hsusb_host: Qualcomm On-Chip EHCI Host Controller

<6>[ 4927.022888 / 03-05 01:59:12.288] msm_hsusb_host msm_hsusb_host: new USB bus registered, assigned bus number 1

<6>[ 4927.052124 / 03-05 01:59:12.318] msm_hsusb_host msm_hsusb_host: irq 132, io mem 0x12500000

<6>[ 4927.072204 / 03-05 01:59:12.338] msm_hsusb_host msm_hsusb_host: USB 2.0 started, EHCI 1.00

<6>[ 4927.072570 / 03-05 01:59:12.338] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002

<6>[ 4927.072753 / 03-05 01:59:12.338] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1

<6>[ 4927.072906 / 03-05 01:59:12.338] usb usb1: Product: Qualcomm On-Chip EHCI Host Controller

<6>[ 4927.073028 / 03-05 01:59:12.338] usb usb1: Manufacturer: Linux 3.4.0 ehci_hcd

<6>[ 4927.073211 / 03-05 01:59:12.338] usb usb1: SerialNumber: msm_hsusb_host

<6>[ 4927.074707 / 03-05 01:59:12.338] hub 1-0:1.0: USB hub found

<6>[ 4927.074829 / 03-05 01:59:12.338] hub 1-0:1.0: 1 port detected

<6>[ 4927.392547 / 03-05 01:59:12.659] usb 1-1: new full-speed USB device number 2 using msm_hsusb_host

<3>[ 4927.555969 / 03-05 01:59:12.819] usb 1-1: device v046d pc52b is not supported

<6>[ 4927.556213 / 03-05 01:59:12.819] usb 1-1: New USB device found, idVendor=046d, idProduct=c52b

<6>[ 4927.556579 / 03-05 01:59:12.819] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0

<6>[ 4927.556945 / 03-05 01:59:12.819] usb 1-1: Product: USB Receiver

<6>[ 4927.557159 / 03-05 01:59:12.819] usb 1-1: Manufacturer: Logitech

<6>[ 4942.675323 / 03-05 01:59:27.943] msm_pmic_id_irq: INTERRUPT !

<6>[ 4942.675903 / 03-05 01:59:27.943] anx7808_cbl_det_isr : detect cable removal

<6>[ 4942.676422 / 03-05 01:59:27.943] usb 1-1: USB disconnect, device number 2

<6>[ 4942.872436 / 03-05 01:59:28.144] msm_pmic_id_w: INTERRUPT !

<6>[ 4942.872589 / 03-05 01:59:28.144] otg_cable is removed