Database Develop

MHL to VGA

Are there MHL to VGA adapters available that are know to work with the 4x?
Or is MHL standardized enough that i can pick any MHL to VGA without any worrying about working?
I know HDMI is usually better but my HMD (tac eye) takes only VGA or SVideo (though SVideo quality really suxx, its only on for NV not for data).
Also I see some MHL to VGA adapters have a secondary USB port, can this be used only as client or could I somehow connect a pointing device to my phone?

If I were you i would take MHL to HDMI cable and then HDMI to VGA. Reason is simple. Sometime you may want to connect your phone to new TV so you will need HDMI as it is standard port.
Secondary USB port is microUSB and it is used to charge phone while conected to TV (at least thats how it works with MHL to HDMI cable).

Stevic Milos said:
If I were you i would take MHL to HDMI cable and then HDMI to VGA. Reason is simple. Sometime you may want to connect your phone to new TV so you will need HDMI as it is standard port.
Secondary USB port is microUSB and it is used to charge phone while conected to TV (at least thats how it works with MHL to HDMI cable).
Click to expand...
Click to collapse
Well, for me this would than look like: MHL-HDMI adapter connected to a HDMI-VGA adapter connected to VGA-"Proprietary HMD Port" thats in used space and weight more for the adapters than for the phone and HMD. As i intent to wear this on my body thats rather not cool. Also the HDMI-VGA adapter will want some juice what will be an additional drain on my batteries.
The "VGA-"Proprietary HMD Port" is passive, so if I like the setup I will probably cut the MHL-VGA adapter open and attache the signal lanes directly to a fitting plug for my HMD.
Also I don't own a TV just a 30" WQXGA Dell Monitor with a Duallink DVI port its one of the old models that had only Duallink DVI, no scaling no DVI no VGA and no other ports.
An other issue would be how to control the phone when it in my pocket, how can I attache some pointing device and would this even work with android OS?
Or would I have to wait for an unlocked bootloader and this cool ubuntu on phone projects that provide a full ubuntu desktop?
PS: is the micro usb port on the adapter only used for charging or is there still a USB signal on it?
David

If i got you right, you want to control phone, connected to PC monitor, over HDM goggles?
You can try something like this https://code.google.com/p/androidscreencast/
It is a software that enables remote control of your phone over WiFi, so if your goggles work on PC it should work here to. It does the same job as the cable connection (MHL to VGA)
As for the MHL to VGA adapter you have 4 connectors:
1) male microUSB (one you connect to your phone)
2) female microUSB (charger or power supply, so it doesn't use phone battery)
3) female VGA (for monitor)
4) 3,5 audio jack for sound

Stevic Milos said:
If i got you right, you want to control phone, connected to PC monitor, over HDM goggles?
Click to expand...
Click to collapse
Not exactly I don't want to use a PC at all. I want to connect the HMD (Vuzix-Tac-Eye-LT-Monocular) directly to the phone and use some pointing device or mini keyboard to control the phone.

I have the adapter and a problem,
the phone is only giving out its native screen resolution, my HMD cant handle.
How can I change the resolution so SVGA ?

P10 - reverse charging disable

Hello,
is there any way to disable reverse charging on P10. I use usb c to micro usb cable to connect DAC Fiio Q1 mk.2 it works great, but phone charges the DAC. So it limits the useability, because of fast discharge. I also tried classic OTG cable and micro USB OTG cable with original Huawei reduction, both with same result = reverse charging the DAC. In developer settings is default USB mode set to MTP. After plugin it goes to reverse charging and after setting it back to MTP in status bar it stops charging due to DAC but after 2 sec. it starts again.
Is there any way to disable it in software? Because on head-fi Fiio engeneer wrote how to solve it trougth cable mod.
But software solution will be much easier.
Thanks.

I have this same issue can someone help please?!

USB OTG

According to this page, the P20 pro officially supports USB OTG. But when I plug this USB key to the phone with the official cable and a simple female - female adapter, nothing happens.
Does it only work with USB type C keys like this one?
If it is the case, I would really like to understand why.

I think you need a USB connector that supports OTG. Your USB 3.0 to USB C adapter that is.
I had a similar issue trying to connect a micro USB infrared camera to my Nexus 6P, had to get a specific OTG converter.

No special usb connector needed, works direct and without problems.
App = ES File Explorer Pro
second pic = usb dvb-t/dab receiver - App = Wavesink Pro

Disable USB Charging?

I am trying to disable USB charging to use my drone.
As of now, the controller charges the phone which in turn drains the battery on the controller.
I used to run this drone on a Note 5 that could be rooted and would disable USB charging by "batt_slate_mode 1".
This is the N960U, USA variant which cannot be rooted. If I change the USB setting in the drop-down or in developer menu it automatically reverts to charging when the controller is connected.
I know it's possible but I am not 100% sure it is possible without root but I will state the facts and hope that someone with knowledge and skills sees this.
Things I know:
-batt_slate_mode 1 will disable charging and the drone controller will not re-enable it.
-The Sprint Variant of the N960U has a hidden data menu "##DATA#" which has an option for USB Charging Disable (see attached)
So clearly it's possible on the phone itself but possibly might be locked out by carrier circumstances.

I use an OTG (ON THE GO) cable. Is this what you are using? I have an AT&T Note 9 & have never had the issue you describe. I use it with my DJI Spark controller.
Cable Matters 2-Pack Micro USB OTG Adapter (Micro USB OTG Cable) 6 Inches https://www.amazon.com/dp/B00GM0OZ4O/ref=cm_sw_r_cp_apa_i_QgMpDbVQX7EWT
Sent from my SM-N960U using Tapatalk

jd14771 said:
If I understand right, you are connecting the controller over USB with the usb-c to usb-a adapter?
Since the controller has its own power, could you buy a sacrifical USB cable and disable the power pins, leaving only data? Basically the reverse version of a charging only cable that has no data pins.. would be a hardware type solution as opposed to software since we have unrooted phones
Click to expand...
Click to collapse
Yes a USB-C to USB-A cable.
Any idea which pins / wires to disable?
Actually, from what I read, devices need the voltage from the power pins to detect the USB etc.
So I think if this were to work it would involve a resistor or something similar.
Further advise is welcome. lol

Help me pick the best cable for Note 9.

First it must be USB type c to USB A. 3.0
What USB standard nobody seems to know. For sure but most tell me its a USB 3.0 At the A end.
And USB Type C at the other end.
Next we need to know what is required in the cable to support Dex.
Next we need to know what is required to support Samsung Fast Charge standard. I hear its not the same as Quick Charge.
Is there any cable out there that does all these things.
I know the cable that comes with the phone does not do this.
i.e. I fails in the USB transfer speed dept.
In short.
Dex compatible,
Fast Charge compatible. As per this link we only need Fast Charge 2.0
But I wonder why does Samsung Claim to use its own standard. i.e. what is the diffirence between the Samsung standard and QC standard.
https://www.qualcomm.com/media/documents/files/quick-charge-device-list.pdf
USB 3.0 Standard compatible for high speed data transfer.
(They say if the USB A port is blue and has more than 4 pads it will work).
Ps: So far I have figured that my wifes One Plus 6 cable does all these jobs.

Answering my own question.
Got to amazon.
Search using this text usb type c to usb a 3.1
I got an amazon Basic from the search the USB A port is blue in color an indication that it is 3.0 It does everything Dex, fast speed transfer and fast charge.

Glad that you managed to get your cable. But for future reference any standard USB A 3.0 - Type - C charging cable will be good. However beware of multi-plug to USB A 3.0 cables as they don't have the best charging speeds, unless you have a high wattage power supply.

I'm using a nice quality INIU cable, has nice quality braided cover, a led for dark car charging, to see cable.