Develop Bugs

[SOLVED]Computer see's device for a few seconds, then disconnects.

Interesting problem I have had on and off. When I plug my phone into my desktop, it will connect normally, then a few seconds later it acts like I unplugged it. It's not the rom as it does it in recovery as well(both with usb-ms activated and without). I have HTC Sync installed. Rebooting either the computer and/or phone doesn't fix it, it just goes away after awhile and starts working again. I've experienced the problem FAR less when connecting it to my laptop, it will typically work there and not on my desktop when the problem crops up.
it's like this problem but it's not constantly http://forum.xda-developers.com/showthread.php?t=711616
-Edit- the device also doesn't show it's charging even when it 'disconnects'

I have the same problem. just keeps discontenting over and over it sees it for a few seconds then disconnects reconnects then off again.

sasigns said:
I have the same problem. just keeps discontenting over and over it sees it for a few seconds then disconnects reconnects then off again.
Click to expand...
Click to collapse
Mine doesn't reconnect, it 'disconnects' and stays that way(as if i unplugged it) until i actually do unplug it and reconnect it.
-edit- 1,000th post, YAY

I was having the same problem on my MacBook until I realized the MacBook must be plugged into power. Once plugged in everything was good. I wonder if the Evo demands more power through USB then other devices.

Yeah, sounds like a power issue to me. If you're using a USB port on a hub or on a keyboard, try one on the PC itself. Also, it could be a slow USB port or a bad cable if you are continuing to have issues. Try another computer if you can, and if you still have the problem try a different cable. Still have the issue, reflash (if you're running a custom rom) or contact Sprint for service.

Same issue here, but on a desktop PC (Dell Studio XPS) using the front-mounted USB port (not a hub). Keeps disconnecting/reconnecting, but often takes 10-15 minutes between cycles. Using stock ROM (for now, at least). Will try other ports & another PC and will report back.

Already tried different ports, only motherboard ports
Rom doesn't matter as the problem exists in both android and recovery
Don't have a different cable, however the same cable will work fine on my laptop then not work on my desktop

mrono said:
Already tried different ports, only motherboard ports
Rom doesn't matter as the problem exists in both android and recovery
Don't have a different cable, however the same cable will work fine on my laptop then not work on my desktop
Click to expand...
Click to collapse
If it works on a laptop, but not the desktop, then it appears to be an issue with your desktop. Any other USB devices doing it?
I would check your motherboards manufacturer and make sure you've got the right USB drivers, a bios update might be in order as well.
But before all that, I've got an idea. First and foremost, try this:
Go to device manage (either from control panel, right-clicking my computer and going to properties, or searching for devmgmt.msc in the start menu search.)
Navigate down to Universal Serial Bus controllers, double click on USB Root Hub (you probably have 1 for every USB Port, so you may have to do them all.)
Click on the Power Management tab, and uncheck the "Allow the computer to turn off this device to save power." check box and see if that solves your problem.

i had this issue on my hero. it was corrected for me after i did a wipe of data and cache. i restored from titanium afterwards. YMMV
good luck

one thing you might try is disabling sense and using the android launcher. then reset the phone. once it boots up try and connect it to your pc. This was how I got mine to connect. when I was using the sense launcher it somehow blocked that options screen and the default I selected wouldn't stick. once I got the connection to my pc working this way I was able to re-enable sense and it's worked perfectly ever since.
I do not take credit for this fix, someone else on here told me to try this n it worked perfectly.

tarheelsmj12001 said:
one thing you might try is disabling sense and using the android launcher. then reset the phone. once it boots up try and connect it to your pc. This was how I got mine to connect. when I was using the sense launcher it somehow blocked that options screen and the default I selected wouldn't stick. once I got the connection to my pc working this way I was able to re-enable sense and it's worked perfectly ever since.
I do not take credit for this fix, someone else on here told me to try this n it worked perfectly.
Click to expand...
Click to collapse
it was nothing with the rom, since it was doing the same thing in recovery.
it turned out to be the short little usb extender cable that was going a foot and ahalf from behind my pc to the side so i could plug it in easier.

Sirchuk said:
...Navigate down to Universal Serial Bus controllers, double click on USB Root Hub (you probably have 1 for every USB Port, so you may have to do them all.)
Click on the Power Management tab, and uncheck the "Allow the computer to turn off this device to save power." check box and see if that solves your problem.
Click to expand...
Click to collapse
I can confirm this works on my HTC Desire - had been racking up my brains for the past couple of days now with no solution! Thanks a lot. This is on PC with Win7 Ultimate.

Newb with USB issues

Hello all. I'm TK, newb who has been lurking for a while. The forum has led me to some awesome changes with my Evo, but that may be catching up with me. I'm still rooted and running CM 7 with SZ 1.01, and none of my computers are able to recognize the USB drive on my phone, regardless of which cable I use.
I can't get ADB to work on my PC, so I'm not able to perform any commands for the phone.
Can anyone help me with this issue? It would be much appreciated. Thanks!

Do you have debugging(in application settings) on when trying to use adb? What about allow mock locations? Try turning debugging off and then turn it back on(while plugged in USB). If that doesn't work you could always go to recovery mode and enable USB toggle and get it connected that way. Also make sure you're actually pulling down the notification bar and selecting "mount".
Sent from my PC36100 using Tapatalk

CrucialTK said:
Hello all. I'm TK, newb who has been lurking for a while. The forum has led me to some awesome changes with my Evo, but that may be catching up with me. I'm still rooted and running CM 7 with SZ 1.01, and none of my computers are able to recognize the USB drive on my phone, regardless of which cable I use.
I can't get ADB to work on my PC, so I'm not able to perform any commands for the phone.
Can anyone help me with this issue? It would be much appreciated. Thanks!
Click to expand...
Click to collapse
Does your phone get recognized at all on your computer when you plug it in? If not you may have a hardware problem -> usb port is loose.

On my original cord that came with the phone I had to trim off about 2 centimeters off of the plastic to go in far enough to have my Toshiba laptop to read it. I have had to do the same thing to several cords since. Maybe your usb?

alexisprz said:
Does your phone get recognized at all on your computer when you plug it in? If not you may have a hardware problem -> usb port is loose.
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Click to collapse
Yes, my computer just says that it doesn't recognize the hardware. it charges just fine by the computer.
I'm running ClockworkMod for my recovery, I'll check for USB Toggle there.

No joy on finding USB Toggle.

It's called something different. Can't remember but it's there, I believe. I've only been in Clockwork recovery like once.

No USB pop-up screen

For the last 3 months, whenever I have connected my phone to the computer with the USB cable, I would get a little pop-up screen on the PC with about 5 options to select from: sync my phone, see the folders and files, etc. I have not seen that little box in about 4 days.
Luckily, when I bring up Windows Explorer (file manager), the PC does recognize the phone in the USB port and I can proceed as normal. I really have no need to sync my phone anyways but I am curious what happened. I have removed the battery more than once, using the same USB cable I have used for 3 months, and reinstalled the drivers just in case. Rooted with the LIH Jellybean leak. Any ideas where the USB pop-up screen has gone? Thanks.

MobDad said:
For the last 3 months, whenever I have connected my phone to the computer with the USB cable, I would get a little pop-up screen on the PC with about 5 options to select from: sync my phone, see the folders and files, etc. I have not seen that little box in about 4 days.
Luckily, when I bring up Windows Explorer (file manager), the PC does recognize the phone in the USB port and I can proceed as normal. I really have no need to sync my phone anyways but I am curious what happened. I have removed the battery more than once, using the same USB cable I have used for 3 months, and reinstalled the drivers just in case. Rooted with the LIH Jellybean leak. Any ideas where the USB pop-up screen has gone? Thanks.
Click to expand...
Click to collapse
Computer glitch not phone glitch =p It usually goes away when you accidentally press "always use this" or something similar. I cant remember how to reset that

Nexus 7 not recognized by PC?

Hi all, I've been lurking the forums since bout September of 2012. I haven't really been posting here, mainly just gathering ROMs, kernels, help etc.
Anyways, my Nexus 7 isn't being recognized by Windows 8, Windows 7, Windows Vista, or even Ubuntu. this leads me to belive this is caused from the tablet. I have installed numerous drivers, but with no luck. Recently, I noticed when I boot into recovery, and the tavlet uis on the Google screen, my computer recognizes it as, "Unknown Device." Soon after it passes the Google screen and boots into TWRP Windows can't detect it anymore. My tablet says it's connected via AC, not USB - which is probably why I can't transfer files. I have MTP checked, and I tried PTP too. I've tried enabling and disabling debugging with no luck still. I'm using the OEM charger for the device, and I have tried using multiple cable with no dice.
"So a new possible way of fixing this after having contacted Asus support. They had me turn of my Nexus 7 and then hold the Volume Up + Power button for 30 seconds and then hold only the power button for 60 seconds. I was told this is to remove static from the mother board. USB Charging, USB Transfer, and Wireless Charging (which is what made me notice the issue) now work. The only problem I have now is that the cord that came with the tablet seems to be a bit loose and will cause it to stop charging when I don't just let it sit on a table."
That was suggested on a different forum, but that didn't work for me neither.
ADB nor fastboot cannot see my device as well.
Any help?

have you tried plugging the cable in to a different usb port?

What drivers are you using? Try the generic USB ones here, which I use with no problem at all: http://developer.android.com/sdk/win-usb.html
For best results, go to Device Manager first, set it to show all hidden devices, then delete (not just disable) any previous drivers you may have installed.
"They had me turn of my Nexus 7 and then hold the Volume Up + Power button for 30 seconds and then hold only the power button for 60 seconds. I was told this is to remove static from the mother board."
I feel like hitting my head against a brick wall when hearing such advice.

timrock said:
have you tried plugging the cable in to a different usb port?
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Click to collapse
Yes, I've tried USB 3 ports, and USB 2 ports with no success.

Pandae said:
What drivers are you using? Try the generic USB ones here, which I use with no problem at all: -snip-
For best results, go to Device Manager first, set it to show all hidden devices, then delete (not just disable) any previous drivers you may have installed.
"They had me turn of my Nexus 7 and then hold the Volume Up + Power button for 30 seconds and then hold only the power button for 60 seconds. I was told this is to remove static from the mother board."
I feel like hitting my head against a brick wall when hearing such advice.
Click to expand...
Click to collapse
Gotta love Asus' tech support.

Try Nexus Root Toolkit, it has a nice walkthrough that shos you how to first uninstall any existing non-working usb drivers. Then just try its options one by one and you'll have working drivers in minutes.

I gave up even trying to get my original N7 and my N7 (2013) to be recognized by any PC. What I do instead is use a free app of the day I got from Amazon a while back called Wifi File Explorer. Run the app and you can access the file system from your PC. Upload, move, copy and create folders.
It's worked for me for a while now. I'm sure there are other free apps that will do the same.
[MOBILE] Nexus 7 (2013)

VertzxD said:
Yes, I've tried USB 3 ports, and USB 2 ports with no success.
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Click to collapse
Have you also tried usb ports on the back of the PC? Those are directly on the motherboard, whereas usb ports on the front of a PC are almost always via a usb hub connected to the MB. I know of instances where this makes a substantial difference (device being recongnized or not). You might try it (if you haven't already).
Edit : also try disabling AV software and possibly firewall. But admitedly I have personally never had any issues regarding device not recognized due to this.

This was my solution.

Anyone having problems connecting N5X to Macbook via USB

Bought the 'official' usb to usb3 lead from the Play store. When I tried connecting to my Macbook Pro the Android File Transfer can't find the Nexus. I thought it might be the USB Debugging needs enabling so I did that. Nope. Maybe the Android File Transfer needed updating so updated it. No joy. I'm a bit lost now, can anyone shed any light on my problem?

Mine would say something about the screen being locked even though it wasn't.. When you plug it in, pull down the notification drawer and tap the Choose More USB Options, or whatever it says. Make sure File Transfer is selected and try again.. took mine a few times of switching between FTP and Charging but it works with my Mac now

tpayne2345 said:
Mine would say something about the screen being locked even though it wasn't.. When you plug it in, pull down the notification drawer and tap the Choose More USB Options, or whatever it says. Make sure File Transfer is selected and try again.. took mine a few times of switching between FTP and Charging but it works with my Mac now
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Click to collapse
Ok, thanks, I'll try switching between MTP and charging a few times like that.

I have no trouble. Have a 2012 MBP using El Capitan.
Sent from my Nexus 5X using Tapatalk

tpayne2345 said:
Mine would say something about the screen being locked even though it wasn't.. When you plug it in, pull down the notification drawer and tap the Choose More USB Options, or whatever it says. Make sure File Transfer is selected and try again.. took mine a few times of switching between FTP and Charging but it works with my Mac now
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Click to collapse
More thanks. I had to switch it between charging and MTP 5 times to get it but it worked in the end.

Is there any way to making the MTP setting sticky for trusted devices? When you connect with usb debugging, it asks you to verify and save the device. If something like that was possible with this setting, you could have the security of not auto enabling when charging from random devices but the convenience when connected to your own remembered computer.

This solved my problem!
tpayne2345 said:
Mine would say something about the screen being locked even though it wasn't.. When you plug it in, pull down the notification drawer and tap the Choose More USB Options, or whatever it says. Make sure File Transfer is selected and try again.. took mine a few times of switching between FTP and Charging but it works with my Mac now
Click to expand...
Click to collapse
This was also my problem. Thank you tpayne! This solved my problem!