Constant connecting/disconnecting when USB plugged in to computer - Galaxy S6 Q&A, Help & Troubleshooting

Got my new GS6 a week ago and now i went to transfer some images and when i connect it to the computer it makes the USB connected sound and suddenly starts disconnecting and reconnecting like crazy, has anyone else experienced this? gotta get my hand on a replacement cable just in case thats the problem..

Yeah it's the cable
soapBro said:
Got my new GS6 a week ago and now i went to transfer some images and when i connect it to the computer it makes the USB connected sound and suddenly starts disconnecting and reconnecting like crazy, has anyone else experienced this? gotta get my hand on a replacement cable just in case thats the problem..
Click to expand...
Click to collapse
Same problem here and mine s6 is only 26 days old.... support told me it's the cable but refused a replacement... what the hell right?

I have the same thing and have tried a few cables. Did you get to the bottom of the issue? My laptop is a dell xps15 and it happens with W8.1 and Mint17 (on the same laptop).

soapBro said:
Got my new GS6 a week ago and now i went to transfer some images and when i connect it to the computer it makes the USB connected sound and suddenly starts disconnecting and reconnecting like crazy, has anyone else experienced this? gotta get my hand on a replacement cable just in case thats the problem..
Click to expand...
Click to collapse
its the cable.. same issue here..when I use a ps4 controller-cable i have no problem

Yea... I think it has a lot to do with the placement of the port on the phone and and a filmsy input. I tried tried a sturdier cable and it works waaaaay better.
Samsung support did offer to send me a prepaid envelope for my cable. ... then wait 2 weeks for testing... then if it was found to be defective a replacement would be shipped free of charge, but if it was defective due to user abuse then they said they'd send me a repair bill........... SERIOUSLY wtf?
I'm not kidding, this was their solution when I spoke to support.

Well it really was the cable, went out and bought a new one, exactly the same and it works fine, so the one i got in the box was faulty, after some googling it seems this has happened to a fair bit a of people already,
i still use the crappy cable to charge with... although it did stop charging half way through once :silly:

It's a USB Power setting
1. Go to Power Options on your computer
2. Click 'Change plan setting' on your chosen plan.
3. Click 'Change advanced power setting' on your chosen plan.
4. Expand 'USB Settings' .
5. Expand 'USB selective suspend setting' and change it to disabled.for On battery and Plugged In

[email protected] said:
It's a USB Power setting
1. Go to Power Options on your computer
2. Click 'Change plan setting' on your chosen plan.
3. Click 'Change advanced power setting' on your chosen plan.
4. Expand 'USB Settings' .
5. Expand 'USB selective suspend setting' and change it to disabled.for On battery and Plugged In
Click to expand...
Click to collapse
I tried this and still it doesnt work. I changed the cables , I changed the PC which I am connecting to and still no fix. I keep getting disconnected continuously.

I'm having the same problem with Galaxy S7. It keeps disconnecting data after it has been plugged in a few seconds. It's not a cable issue, I've checked on 8 different cables.

BaconMage said:
I'm having the same problem with Galaxy S7. It keeps disconnecting data after it has been plugged in a few seconds. It's not a cable issue, I've checked on 8 different cables.
Click to expand...
Click to collapse
Flash a different ROM. I had this on my s6 e+ on stock nougat. I went to Dr ketan ROM and it stopped

I heard it could be due to using a fast charging cable. The phone attempts to draw out more current than the USB port of the computer allows, forcing it to disconnect/reconnect repeatedly. Try using an older/less-current-rated cable. Alternatively, if you don't actually need to access the files and are just charging the phone, you can go to Window's Auto Play (search in start menu) and set your phone to "Take No Action"

I wanted to throw out a few other tricks to try, for whoever comes across this old thread when googling.
I don't 100% have an idea of why this happens, or why this worked, but it did.
First thing is, the cable really does matter. If you're using a cheapo cable that doesn't do fast charging, or a data-only cable, get a nice cable. If you're using a nice cable, try a non-fast-charge cable or the one that came with the phone.
My fast-charging cable has worked for a while but I recently tried to transfer a large 2 gig movie to the phone's secondary SD card, and it kept disconnecting / timing out.
What worked for me is go to developer options (google it, there's some code you have to enter to unlock these settings) and then usb debugging. It was disabled and I enabled it. The transfer then worked smoothly.
Weirdly, another transfer right after did NOT go smoothly, and the fix for me was to disable usb debugging, then enable it again. Then the file transferred normally, even though it took a few minutes.
Lastly, one file refused to transfer that was sitting in a particular folder. I'd get an error instantly. The folder was the cache folder for a popular video downloading app. Even a tiny text file from that folder, refused to copy. But files from other folders worked. I finally figured out that for whatever reason, the phone (or maybe windows) didn't like copying straight from this folder. Not sure why. Some permissions thing? Anyway - I copied the file I wanted from the cache folder, to a folder I use all the time. Then from this new folder to the phone. Worked smoothly, no error.
Hope these tricks help someone.

Related

Not connecting to windows...

Hello all,
Played with the S7 couple of days now and decided to try and transfer some movies to the phone to test VR. But it only charges when i connect it and that makes this task kinda hard to do. I installed the samsung usb drivers and tried different settings in the *#0808# menu but no luck. The Smart Switch app is not showing up in the Store either so can't try that.
Anyone got some tips or solution?
Make sure to be using the factory USB cabel, because some 3rd party charging cables do not include the data pin
Gorgice said:
Make sure to be using the factory USB cabel, because some 3rd party charging cables do not include the data pin
Click to expand...
Click to collapse
Thanks! I guess this is what living with iPhone for a year and a half does to you. You stop thinking... Anyway case solved!
As a follow up to this. What do you all recommend if even the factory USB cable refuse to work reliably? What I mean is that, every time I connect my s7 to PC, it prompts me to "allow MTP" access. But after I allow MTP, and the "card" and "phone" show up as part of S7's drives in windows 10, often times the contents of the drives on the S7 will not show up properly (e.g. folder name doesn't show up, folder themselves are empty). What is going on? I reinstalled the samsung drivers for windows couple times now and have tried many different usb cables. Of the once that work, the MTP connection would randomly just crap out, or behave as I mentioned above...
Is the encryption messing with things? Or do I have a messed up USB connector on my S7? Thanks.

[Q] Pixel 2 won't charge or allow data transfer over USB C

The title was supposed to say C-C
As in the title really; When I plug the phone into my laptop (Lenovo ThinkPad L450) with a C-C cable, the following happens.
Some key points in trying to diagnose the issue:
Used three different C-C cables including the one that comes in the box
Tried a USB 3.0 A-C cable on the same laptop, works perfectly
Plugged a HTC 10 into the same port with the same cables, allows fast charging and 3.1 transfer rates
I have been into 'Developer Settings' and changed 'Select USB Configuration' to 'Charging',
Can anyone help, or is anyone experiencing a similar issue? I really don't want to have to RMA this.
for charging i cant really help but for data transfer try enabling usb debugging and getting the right drivers for the pixel 2. also connect as MTP for data transfer.
havent tried any of this myself as i dont need to transfer my files yet and theres no roms either but let me know if it works.
good luck!
I have kind of the same issue - while mine charges, it doesn't recognize the phone for MTP at all. Tried both the cable that came with the device, and the 5x cable I've been using since February. My husband's 5x is recognized, my Pixel 2 isn't. Have to use a USB-C to USB-A cable to do any data transfers.
This ticks me off, because I have 2 USB-C ports on my laptop. One that's a USB-C/Thunderbolt port (which always worked with the 5x), and the other that's just USC-C with USB 3.0 capability, which has my USB hub plugged into it. The hub won't work with the C/TB port, and now neither will the Pixel 2. So I either have to grab my C to A cable to load music and use ADB, or plug into the hub's port, losing my external keyboard, mouse, external HDD, printer, and Wacom tablet.
vido.ardes, is your C port Thunderbolt as well?
vido.ardes said:
The title was supposed to say C-C
As in the title really; When I plug the phone into my laptop (Lenovo ThinkPad L450) with a C-C cable, the following happens.
Some key points in trying to diagnose the issue:
Used three different C-C cables including the one that comes in the box
Tried a USB 3.0 A-C cable on the same laptop, works perfectly
Plugged a HTC 10 into the same port with the same cables, allows fast charging and 3.1 transfer rates
I have been into 'Developer Settings' and changed 'Select USB Configuration' to 'Charging',
Can anyone help, or is anyone experiencing a similar issue? I really don't want to have to RMA this.
Click to expand...
Click to collapse
I posted my problem on the Google Product forums, and got this answer. It worked for me.
"Nikhil Rastogi said:
Hi all,
I just faced this issue. Connected my Pixel to my PC, no indication of connection either on PC or on Phone, except that the phone was charging. Even the file explorer on Windows 10 wasn't displaying Pixel as a connected device.
I found a solution, I hope it works for you all,
Go to Settings->Apps & notifications->App info->Tap 3 dots in top right corner->Tap 'Show system'.
Then find 'External storage' and 'Media storage' apps in the list and clear cache and data for both these apps. Restart your phone and wait 5-10 minutes before connecting the phone to your PC.
After connecting, the phone should now show 'USB connected for charging', as it did in Nougat. You can tap that notification and select file transfer."
Click to expand...
Click to collapse
These are the exact steps I did on the Pixel 2:
Settings>Apps & notifications>See all 125 apps>3 dot menu>Show System>Media Storage>Storage>Clear Data (this got the cache, as well)>Back>Back>External Storage>Storage>Clear Data.
Then I plugged it into the C/TB port, and the computer made the "USB Connected" noise, and "USB Debugging" came up in my phone's notifications (yes, I've enabled developer options and USB debugging there.) I'm then able to go into Settings>Connected Devices>USB and choose Transfer Files.
I just cleared the cache, not data for both and it worked.
krelvinaz said:
I just cleared the cache, not data for both and it worked.
Click to expand...
Click to collapse
Now that you can connect to your PC, is there any way I could get you or some other kind soul, to pull the system/framework folder and system/priv-app/SystemUIGoogle folder for me? The system.img files cannot be unpacked at this time. Every method tried gives "List index out of bounds" error.
Danariel said:
I posted my problem on the Google Product forums, and got this answer. It worked for me.
These are the exact steps I did on the Pixel 2:
Settings>Apps & notifications>See all 125 apps>3 dot menu>Show System>Media Storage>Storage>Clear Data (this got the cache, as well)>Back>Back>External Storage>Storage>Clear Data.
Then I plugged it into the C/TB port, and the computer made the "USB Connected" noise, and "USB Debugging" came up in my phone's notifications (yes, I've enabled developer options and USB debugging there.) I'm then able to go into Settings>Connected Devices>USB and choose Transfer Files.
Click to expand...
Click to collapse
Thanks for the advice, but unfortunately no change for me. I fear I may have to RMA this, which I really don't want to have to do.
I have found on my other devices, that if I reboot to recovery mode, my computer can then read the file folders in my device.
This appears to be an issue with the laptop, not the phone, as it works on another PC with a USB-C port

Unable to connect to PC in any mode

Hi all, I'm afraid I already know the answer to my question but I'll still ask if there's even a slight chance to get this fixed on my own.
I had this issue on Android 8.1 where my Pixel kept saying "Supplying power to connected device via USB" even without anything connected to it, (it started doing that one day without any reason) tapping the notification allowed me to switch to "Charge this device" and then turn on MTP mode, battery life was terrible but I wasn't that much bothered by it because I am an Android developer so I kept it connected in USB Debugging mode most of the time anyway.
When I got the notification for Android 9 update I decided to update hoping it'd fix the USB issue but after the update it now always says "Charging connected device" and tapping the notification does bring up the "USB Preference" screen and it allows me to switch to "USB Controlled by this device" and it starts charging but there's no way to switch "Charge only" mode to anything else, ADB does not see it, fastboot does not see it and there's no persistent notification on the phone about it being connected via USB at this point (in any mode). My understanding is that this is a hardware issue but Oreo still allowed me to workaround this and get the USB debugging connected.
Is there anyway I can get back to Oreo without using fastboot flash or any other solution to this?
Thanks for reading.
PS. I'm on Ubuntu but I can access a Windows machine if required and bootloader is already unlocked.
I'm curious if you're able to connect to a USB OTG storage device.
I'm having this issue connecting it to my windows 10 laptop.. the cable recognizes it.. starts charging.. shows option on phone to change type of connection.. but not matter which one i change it too, the computer will not pull lit up as a drive to see the files..
Jaws4God said:
I'm having this issue connecting it to my windows 10 laptop.. the cable recognizes it.. starts charging.. shows option on phone to change type of connection.. but not matter which one i change it too, the computer will not pull lit up as a drive to see the files..
Click to expand...
Click to collapse
Same here! I plug the cable into the Windows 10 computer, I even can change the mode from charging to MTP file transfer, but the device won't show up in the Windows Explorer. It appears under connected devices though.
My Pixel 2 XL would not connect to PC for file browsing if USB debugging of Android Apps was enabled in developer settings. Didn't matter which option I chose to connect. IDK if that is expected or not, but it took me a while to figure out. Happened Spring 2018, idk if Google fixed it.
pyro226 said:
My Pixel 2 XL would not connect to PC for file browsing if USB debugging of Android Apps was enabled in developer settings. Didn't matter which option I chose to connect. IDK if that is expected or not, but it took me a while to figure out. Happened Spring 2018, idk if Google fixed it.
Click to expand...
Click to collapse
I don't think i've tried to turn that mode off.. i'm so used to needing it on for the computer to recognize and connect to all my previous Android Devices.. thanks for the recommendation...
post-mortem said:
I'm curious if you're able to connect to a USB OTG storage device.
Click to expand...
Click to collapse
Couldn't find any OTG cable to try that but strangely enough a few days back I connected it to PC for charging and Nautilus popped up, same cable, same USB port and it started working all of sudden. Did verify with a couple of other cables and different ports and everything is working fine since.
"Charging connected device" notification never appeared again, only thing different (when it started working again) was that I was out of the air conditioned room most of those days, might it be moisture or something like that?
I'm back to my normal routine for a few days now and it's still 100% normal, will have to see if it stays that way.
Sorry for late response.
Here's an update in case someone else runs into this situation, I can say this with 99% certainty that is caused by the blackish residue build-up around the USB port over time. It's not too much that it's visible just by looking into the port but it's enough to make the device behave like this.
Here's what I did to get rid of it, took a match stick (don't use anything metal) and broke it in half making a sharp edge on both broken pieces, took the non coated piece and inserted sharp edge in the bottom side of the port and gently wiggled it around while applying some pressure towards the connector (just a little bit, make sure you don't break anything), did this for about 45 seconds then took out the match stick and the part that was touching the connector had turned blackish (I guess this is when you know you have 'cleaned' it enough?), repeated the same process on the top side of the port with a new match stick piece (guess you can use the same one after cleaning it with a tissue), the only difference was that this time applied the pressure in opposite side (other side of connector), device was on during all this time.
It builds up again after a while (~3 months) so I had to repeat the entire process again when it started doing that again at the start of December but it wasn't that annoying this time because I knew exactly what was wrong and how to get rid of it, device is still working fine 100%.
I'm simply sharing my experience and not encouraging anyone to do this but if you do decide to try this be sure not to use anything metal and don't break the connector inside the port (turning the device off would be a good idea too) and you'll be fine and if something does go wrong I won't be responsible.

Android USB file transfer no longer working?

Hi, it seems like the function to transfer files via USB is not working anymore with my phone, last time I transferred files was 2 months ago.
-Under Advanced Developer Options, "USB configuration" is set to "MTP"
-Tried with different cables to PC which used to work.
-Tried with OTG wire to read USB flash drive that used to work. (flash drive has light when plugged in PC, doesn't have light on when using OTG, no notification in Android that something has been plugged in)
-Tried turning on/off the phone.
-The only thing that work is charging phone.
What I believe is either one of the two following reason:
-Some setting changed and that's why it's not working.
-Port is now defective.
I don't remember changing any setting or downloading any new app in the last two months. Do you guys know anything else I can try or a solution? Thanks
petitpetitpom said:
Hi, it seems like the function to transfer files via USB is not working anymore with my phone, last time I transferred files was 2 months ago.
....
I don't remember changing any setting or downloading any new app in the last two months. Do you guys know anything else I can try or a solution? Thanks
Click to expand...
Click to collapse
Yeah it looks like the port is damaged (if file transfer doesn't work in any way possible)
Maybe try to go get it fixed by a local qtore, and if you have nothing around, try to check if the brand doesn't repair those things for cheap.
Hope I helped
petitpetitpom said:
Hi, it seems like the function to transfer files via USB is not working anymore with my phone, last time I transferred files was 2 months ago.
-Under Advanced Developer Options, "USB configuration" is set to "MTP"
-Tried with different cables to PC which used to work.
-Tried with OTG wire to read USB flash drive that used to work. (flash drive has light when plugged in PC, doesn't have light on when using OTG, no notification in Android that something has been plugged in)
-Tried turning on/off the phone.
-The only thing that work is charging phone.
What I believe is either one of the two following reason:
-Some setting changed and that's why it's not working.
-Port is now defective.
I don't remember changing any setting or downloading any new app in the last two months. Do you guys know anything else I can try or a solution? Thanks
Click to expand...
Click to collapse
Try cleaning the port, sometimes, a combination of lint and dust gets compacted into the port and prevents the cable from making a good connection.
Sent from my SM-S767VL using Tapatalk
Thank you for your replies, I cleaned the port but sadly, it still doesn't work and quotes to repair this problem are expensive.
An alternative I found is to transfer my files to PC is via bluetooth to my PC via a USB adapter, seems cheaper.
petitpetitpom said:
Thank you for your replies, I cleaned the port but sadly, it still doesn't work and quotes to repair this problem are expensive.
An alternative I found is to transfer my files to PC is via bluetooth to my PC via a USB adapter, seems cheaper.
Click to expand...
Click to collapse
Yup that's a solution
Hopefully it'll be a sustainable solution
Have good day

Can't connect to Windows 10 PC?

For some reason I can't connect my Pixel 4a to my PC with a USB C - USB A cable (or USB A - USB C, not sure what the official name is) , even though it worked fine on my previous phone.
Included with the phone is a USB C - USB A adapter, but I see no use for it unless you have a special USB A cable which I don't.
My motherboard does have a USB C slot on it and it does read my phone when I plug it in that way but for some weird reason it's really loose and doesn't stay connected unless I keep physical pressure on it.
I'm not going to update to Android 11 until the November update because I've heard the current build has a few bugs, but does anyone know if Android 11 fixed the USB C - USB A issue?
Have you made sure to switch to file transfer mode? It defaults to 'no transfer' mode when I plug into my laptop.
Most likely you need to toggle the phone connection settings to data transfer, originally it will be set to charge only I think.
WAusJackBauer said:
For some reason I can't connect my Pixel 4a to my PC with a USB C - USB A cable (or USB A - USB C, not sure what the official name is) , even though it worked fine on my previous phone.
Included with the phone is a USB C - USB A adapter, but I see no use for it unless you have a special USB A cable which I don't.
My motherboard does have a USB C slot on it and it does read my phone when I plug it in that way but for some weird reason it's really loose and doesn't stay connected unless I keep physical pressure on it.
I'm not going to update to Android 11 until the November update because I've heard the current build has a few bugs, but does anyone know if Android 11 fixed the USB C - USB A issue?
Click to expand...
Click to collapse
I had this issue too. Windows file explorer would just crash after one or two files and stop transfer, no matter the size and type. (Yes I had file transfer selected on my phone ?)
Then windows update gave me a driver called "Google Inc. - Other Hardware - Kedacom KDB Composite Interface". I also updated to the newest firmware on the phone. No idea which of these did the trick or if it was the combo. However. Smooth sailing now ??
Hope this helps
(If windows update refuses to give you the driver, you can get it from Microsoft's update catalogue online. A Google search will do)
Ok it's completely messed up. When I search for USB settings it doesn't let me change anything at all, even though when I first got the phone I could and I changed it to transfer files. EDIT: No actually the setting that I changed was a developer option called "Default USB configuration" which I changed to transfer files but that still did nothing.
I just plugged in my phone and looked for the USB setting in the notification area but it wasn't there, but I noticed an option called "manage"
I went in there and noticed this. (see attachments) it's locked to be off and I can't change it. Very odd.
WAusJackBauer said:
Ok it's completely messed up. When I search for USB settings it doesn't let me change anything at all, even though when I first got the phone I could and I changed it to transfer files. EDIT: No actually the setting that I changed was a developer option called "Default USB configuration" which I changed to transfer files but that still did nothing.
I just plugged in my phone and looked for the USB setting in the notification area but it wasn't there, but I noticed an option called "manage"
I went in there and noticed this. (see attachments) it's locked to be off and I can't change it. Very odd.
Click to expand...
Click to collapse
You're in notification settings. Try short tapping rather than long tapping to get the menu to pop up allowing you to select data transfer.
Changing default USB settings in developer options doesn't work for me either.
GoldElocks said:
You're in notification settings. Try short tapping rather than long tapping to get the menu to pop up allowing you to select data transfer.
Changing default USB settings in developer options doesn't work for me either.
Click to expand...
Click to collapse
My point is that the notification that normally comes up when you plug in your phone to a computer to change to data transfer, charge only ect ect isn't even coming up because the firmware is stopping that notification from coming up altogether and I can't change it so it does.
WAusJackBauer said:
My point is that the notification that normally comes up when you plug in your phone to a computer to change to data transfer, charge only ect ect isn't even coming up because the firmware is stopping that notification from coming up altogether and I can't change it so it does.
Click to expand...
Click to collapse
Almost certainly a cable or host port issue. Swap cables and see what happens. Same for hosts/host ports. You're not going to have toggling options if the phone does not 'see' all expected lines/pins.
I had the same issue and changed to a different cord to fix the problem.
You have an non certified cable it seems, I've confirmed this pixel 4a works with only certain cables for usb transfer, also the usb a to c cable you have will not charge the device as well.
Get a cable from know manufacturers like Samsung, it worked for me.
Yeah turns out it was a cable. Strange how my cable worked with my old phone but not with the Pixel 4a
Had this issue with my new 4a just now. Cable was fine, even used the new cable that comes with it using a Usb C to Usb A adapter. Nothing worked. Upon opening Device Manager I found a new device called 'Kedacom USB Device'. After trying random things, I decided to uninstall the current drivers by right clicking on it and clicking 'Uninstall device'. Suddenly the phone connected, and even showed the adb prompt.
So for anyone still facing this issue, hopefully this solution might help

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