USB issues - Atrix 4G Q&A, Help & Troubleshooting

My atrix has trouble connecting to my computer on mass storage mode.. It doesn't have these issues normally but in the "my computer" tab in windows the atrix flashes twice and disappears. Then it won't appear later and can't connect. What do I do?

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USB Issue

Energy ROM 'Mercury'
Can plug into computer fine, but when plugging into other devices via USB to play music the device detects the phone for a couple of seconds then disconnects. Tried different settings within the Settings > System > USB Settings, still the same issue. It used to work fine until recently.
Are you sure you're using Disk Drive mode? I've never seen it disconnect spontaneously. You may want to try a different cable.
Cable seems to be fine as it works perfect when connecting phone to computer. It connects the screen displays asking what mode, then disappears too quick to select anything as its disconnected.

No disk mounting or connect to pc popup

My rezound is recognized by my pc. In my computer I see two removable drives but I can not open them. It seems the computer can see them but the phone does not dismount them for computer use. I also never have the connect to pc popup on the notification bar. Yes the notification is enabled in the connect to pc settings. Did I possibly freeze an app that could cause connect to pc not to popup and dismount my drives on the phone???
Are you in charge only mode or storage mode?
storage mode

[Q] "turn usb drive on" screen automatically launches when I connect usb .-.

[Q] "turn usb drive on" screen automatically launches when I connect usb .-.
Please don't ask me about my phone and rom... this bug is in ALL phones and roms I tried...
When I connect usb, it should only show a notification in the status bar... but after enabling usb debugging and then disabling it, the mentioned screen is launched automatically... which is kinda annoying...
So what can I do to fix it without having to format my phone?!

Marshmallow USB connection issue. Help required

I recently updated my phone (Huawei G7) to android marshmallow 6.0.1. Everything was fine at first but after a few days, I realised I can't connect my USB stick (micro USB flash drive) to my phone. After that, I connected my phone to my PC and I got nothing!
My phone doesn't charge when connected to my PC and my PC doesn't show anything when I connect the USB cable. Huawei software also says no device connected. I tried different cables and the result is the same. I factory reset my phone, now it charges but still nothing shows up ion my computer or phone.
I enabled USB debugging. I used to get a message prompt on the phone to allow connection to my PC. But now there is no such message and there is no USB debugging notification in the notification bar.
I changed USB connection mode to Charging Only, file transport and photo transport. But it doesn't make any difference. It's as if my phone is not connected.
I feel like android is blocking the use of the phones USB port except for charging.
Does anyone have any idea?
Does your PC makes any sound on connecting your phone to it?
Sent from my LS-5009 using XDA Labs

No Computer Connection, no 'Allow connection in HDB mode' pop-up

I'm trying to put music on my phone, so I got HiSuite set up and everything and tried to connect. At first, it didn't connect at all, so I did some research to find a fix.
I've set the settings to allow HDB HiSuite connection, and I've turned on USB Debugging in developer mode as well. (I've tried with and without USB Debugging on) It's also set by default to MTP connections, and yes when the notification pops up it says charging only, but I switched it to Media.
On the computer, it shows up as connected and I get a pop up saying 'connect to device-please authorize your computer to manage your device.' In order to continue, I have to click ok on a pop up on my phone that says 'Allow connection in HDB mode'.
But I'm not getting that pop-up so I am stuck on this step.
I've tried switching out cables but that doesn't work. I was using the cable that came with the phone originally anyway. If it's the port I'm screwed, because it's the only port that still works on this computer.
Any ideas of something else that could be causing the problem? I appreciate any help you could give.

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