Develop Bugs

[Q] usb/debugging not found

I've been running CyanogenMod 10.2 on my rooted HTC One for a good long while now. Since the ROM worked so well, I never had the need to connect the phone to a computer via USB in quite some time. A few months ago, when I attempted to transfer some photos, I ran into a weird and frustrating road block; my phone is simply not being recognized by any computer <see here>
I have updated all drivers
I have enabled debugging in Developer Options
I have tried rebooting Fastboot in bootloader
I have tried using the toolkits
I have tried everything I think I know
The weird part is that the phone charges via USB connected to the computer.
Since it didn't effect much, I just figured it was a glitch and I never ran into a problem again--that is, until today. I hadn't used my MHL adapter with the HTC One (only my GNexus), but after reviewing an intended installation of a Pioneer Appradio, I wanted to ensure that my One would work with the MHL. Hooking up my One to the Samsung MHL adapter (and power supply of course), I get no display on my television.
I am now beginning to wonder if the USB port is damaged. Visual inspection doesn't reveal anything, but I am curious if anyone has had this problem and would appreciate any help. Is there any way to test if I've fouled up the port?

Does the phone recognize that it is connected to a pc? Can you access the phones storage from your pc?

cmlusco said:
Does the phone recognize that it is connected to a pc? Can you access the phones storage from your pc?
Click to expand...
Click to collapse
No and no

I installed Flashify and did install CWM 6.0.4.7 to see if it would help, but to no avail

Have you tried adb with a different rom or stock via ruu? If it still dosent work then, either your usb port or your cable is messed up.

cmlusco said:
Have you tried adb with a different rom or stock via ruu? If it still dosent work then, either your usb port or your cable is messed up.
Click to expand...
Click to collapse
I have tried adb, but the device never is recognized.
I'm currenty transferring my TWRP backup via WiFi.
I planned on switching to CM11 and see if I can't get it to work after that.

Phone not Mounting on PC

So my phone was mounting fine on my pc, and then all of a sudden it wasn't. My Nexus 7 still mounts properly and accepts developer commands, but the m8 won't (yes developer settings is on).
I tried wiping and flashing a rom clean and it still doesn't work, charges fine though. Any advice?

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I'm having the same issue. Stock non rooted and it will not connect. I have tried it on other computers cables ports everything.

Art2Fly said:
So my phone was mounting fine on my pc, and then all of a sudden it wasn't. My Nexus 7 still mounts properly and accepts developer commands, but the m8 won't (yes developer settings is on).
I tried wiping and flashing a rom clean and it still doesn't work, charges fine though. Any advice?
Click to expand...
Click to collapse
You might try a different cord.
Open Device Manager in Windows and then plug the phone in. Do you see it in the list with a little yellow triangle? Do you see Android USB Devices listed?

OP after literally messing with various driver files, 8 usb ports and 2 laptops, I dug out my old box of cables and found a taped up, on its last limb OEM HTC EVO 4g (not lte the original) cable. This thing has been through the ringer. But its exactly what It needed. I figured with the 3 cable I had already tried this wasn't the issue, but have you tried using an OEM cable? I guess that is all that works. Good Luck

beamer1341 said:
OP after literally messing with various driver files, 8 usb ports and 2 laptops, I dug out my old box of cables and found a taped up, on its last limb OEM HTC EVO 4g (not lte the original) cable. This thing has been through the ringer. But its exactly what It needed. I figured with the 3 cable I had already tried this wasn't the issue, but have you tried using an OEM cable? I guess that is all that works. Good Luck
Click to expand...
Click to collapse
Still trying to get it to work, have tried 4 cables myself. I might just end up having to return the phone.... Fastboot works in bootloader

Art2Fly said:
Still trying to get it to work, have tried 4 cables myself. I might just end up having to return the phone.... Fastboot works in bootloader
Click to expand...
Click to collapse
Uninstall all HTC drivers and HTC Sync. Then connect the phone. DO NOT choose the option to automatically install any drivers.
Open Device Manager, find the phone. Select the option to manually pick the driver, and select the generic MTP device driver.
This is what worked for me, after countless attempts at re-installing various HTC drivers, different cables and ports, etc.

Bump. Still looking for answer to this. I have RUU'ed both to Sense and Google Phone editions and the problem still persists, the phone does not detect its connected to a computer and change to mtp accordingly. Only way I was able to get the RUU in there was through fastboot, which is again the only time I can access the phone through usb. Adb is no luck in either android or recovery.

Art2Fly said:
Bump. Still looking for answer to this. I have RUU'ed both to Sense and Google Phone editions and the problem still persists, the phone does not detect its connected to a computer and change to mtp accordingly. Only way I was able to get the RUU in there was through fastboot, which is again the only time I can access the phone through usb. Adb is no luck in either android or recovery.
Click to expand...
Click to collapse
Have you tried revoking the USB debugging authorization and then accepting the RSA fingerprint key again when connecting to PC?
Obviously it can't be an USB cable problem if you can connect to it in bootloader mode and use fastboot commands.

To clarify, the phone just charges when connected, it does not detect that it is connected to PC so debugging doesn't even trigger, neither does mtp. I don't even get the slow charging notification

Does it do the same when you plug it in and reboot the computer to "pick up" during boot up process? Or if you run a live CD? I never had an issue like that with my phone but I did have a similar problem with the USB external blu ray drive I bought some time ago. The pc just didn't detect it at all not on any of the ports until I rebooted my PC with the drive already plugged it and for some reason it picked it up. <Not a solution as I don't know what caused it to not be detected in the first place but still...
Not sure if it's an issue with the device(Phone for you, blu ray drive for me) or if it's a problem with the PC even though other things might still work for you as it definitely did for me(phone, headset, mouse, keyboard, usb extender + all the external hard-drives connected to it)...

Problem exists in all computers, Mac, pc, linux

Did you try what I suggest in Post #6 above?
This worked for me when I had the same issue. adb and fastboot would work, but it would not mount MTP.
And just in the last day or 2 I helped someone else with the same issue and fix.

The phone doesn't show up in device manager.

Have you modify the Kernel? (Applying some settings for example)
I browsed over the web for this issue and found some people with the same problems. They solved by removing the settings applied on the kernel or flashing a new one.

I've flashed various kernels and ruu, still same result

Still looking for help

[Q] Can't connect to the PC

I have had issues connecting the Note 4 to my PCs. I have tried multiple cables and computers. A usb error appears "Usb Device not recognized" "The last USB device you connected to this computer malfunctioned and WIndows does not recognize it." All PC's are running windows 8. I have tried connecting it via fastboot to flash to stock as well as through ADB and I cannot get anything to read the device.

Are you using the oem cable? Sometimes cheap generic cables give errors. Enable usb debugging and see if that helps. Good luck.

dteze88 said:
Are you using the oem cable? Sometimes cheap generic cables give errors. Enable usb debugging and see if that helps. Good luck.
Click to expand...
Click to collapse
Thanks but I've tried multiple. OEM and aftermakert cables. I found that when I put it in the charger it doesn't detect it as AC. I believe for some reason when the phone is connected to the PC it doesn't switch to MTP, which could cause the issue. I have wiped the phone, tried different roms, and installing plasma kernel. I am at my wits end. I have tried finding sprint's seceret number to dial, supposedly there's a menu to force MTP but I can't find it anywhere.

OK. So I couldn't connect via cable I tried flashing the stock image though mobile odin and now I lost recovery and the phone bootloops. Does anyone know a way to boot into recovery from the external SD card?

I would just flash the OF5 tar and start from scratch. http://forum.xda-developers.com/not...om-sm-n910p-stock-of5-odin-flashable-t3158114

Sounds like it's your computer.
Edit: Any other phone's Samsung or not able to connect? Does your phone charge with any or all of your cables? Hopefully the stock cable.

You need to go to Device Manager and Uninstall/reinstall the drivers pertaining to USB
Uninstall the samsung drivers
After that, unplug your powercord from the laptop
connect the phone to your usb port first and then replug your powercord and turn on your laptop
let the usb and samsung drivers reinstall(auto or manual)(if it detects it normally))

dteze88 said:
I would just flash the OF5 tar and start from scratch. http://forum.xda-developers.com/not...om-sm-n910p-stock-of5-odin-flashable-t3158114
Click to expand...
Click to collapse
I wish I could, the issue is that since I get this USB error, I can't get ODIN to detect my phone.
w7excursion said:
Sounds like it's your computer.
Edit: Any other phone's Samsung or not able to connect? Does your phone charge with any or all of your cables? Hopefully the stock cable.
Click to expand...
Click to collapse
I was able to get my Note 3 to connect with no problem, I was even able to get ODIN to detect it in Fastboot. I have one more cable I am going to try tonight, I have my girlfriend bringing it with her. I may have switched an S4 cable with the Note 4 cable. I hope this is the case.
xxSTARBUCKSxx said:
You need to go to Device Manager and Uninstall/reinstall the drivers pertaining to USB
Uninstall the samsung drivers
After that, unplug your powercord from the laptop
connect the phone to your usb port first and then replug your powercord and turn on your laptop
let the usb and samsung drivers reinstall(auto or manual)(if it detects it normally))
Click to expand...
Click to collapse
I was using my desktop, and I tried this on my laptop. Didn't work. Thanks though! I am wondering if this possibly could be a Windows 8.1 issue...
Anyways, 5.50 to anyone who gets this working.

I accidentally switched cables with my son's s4 and nothing would work. Figured it out and then I could connect to my computer. Could be the same thing lol.

w7excursion said:
I accidentally switched cables with my son's s4 and nothing would work. Figured it out and then I could connect to my computer. Could be the same thing lol.
Click to expand...
Click to collapse
I wish that was the case. I am wondering if it's a windows 8 issue now.

I'm on 8.1 pro, and my devices detects fine under cm12.1.
Have you tried going into Settings > Storage. select the 3 dot menu on the top right and force MTP or PTP detection while device is connected to PC / Laptop?

Oneplus 3 does not connect to pc

my oneplus 3 does not connect to my pc. I have tried turning on and off developer options, turn off and on oem unlocking and usb debugging. I change the usb connection to mtp from charging but does not change. Also does not recognize it when i connect to pc. Also does not pop up on status bar and i checked portable devices. I also tried installing the oneplus drivers. i am on Android 7.0 freedomos-2.5. Any way to fix this issue? i might try to update freedomos because im on a old version of it.:crying:

Windows? If, yes windows drivers are the problem.
Try to other pc, to see if it works., first.

Evnul000 said:
my oneplus 3 does not connect to my pc. I have tried turning on and off developer options, turn off and on oem unlocking and usb debugging. I change the usb connection to mtp from charging but does not change. Also does not recognize it when i connect to pc. Also does not pop up on status bar and i checked portable devices. I also tried installing the oneplus drivers. i am on Android 7.0 freedomos-2.5. Any way to fix this issue? i might try to update freedomos because im on a old version of it.:crying:
Click to expand...
Click to collapse
Windows drivers 100%.

null0seven said:
Windows? If, yes windows drivers are the problem.
Try to other pc, to see if it works., first.
Click to expand...
Click to collapse
I have tried it on both my PC and laptop with both windows 10. Does not work. My PC also has windows 7 still seems to not work. Are there any other drivers i might be missing?

i have also done some research that you should update your drivers from device manager. I dont see anything related to my device. i went to portable devices nothing and i dont have a other devices section in device manager. Any help?

What recovery?
Try to flash latest twrp. I use blu-spark by eng-stk. You can fla**** thru recovery or Flashify app.

null0seven said:
What recovery?
Try to flash latest twrp. I use blu-spark by eng-stk. You can fla**** thru recovery or Flashify app.
Click to expand...
Click to collapse
i am on the latest twrp. will blu-spark help fix it?

ive also found out theres no kedcom driver when i go to fastboot. i even reinstalled adb drivers to insure its there but it does not pop up.

You'll need to remove drivers reboot, install correct drivers, reboot and then be nice to everyone you ever meet and it'll show up. It's a real pain but you can get there. XDA tutorial all the way there!

I once have kind of youre problem connecting to my laptop (win.10). But, at work, on that laptop, connection was ok (win.7).
I reinstal windows 10 and connection works fine, since.
I allways use latest TWRP & version of rom. I can't tell for sure what it's goin on with youre phone.
If i was in youre situation i format my phone (this will erase ALL in youre phone). And if PC still does not see the phone reinstall windows.

Also: Try a different cable.
A cheap cable could have a charging pin layout but lack data pins connections.
9 out of 10 issues with connecting to PC and getting odd behaviours is due to a bad/wrong cable.

dentman said:
You'll bed to remove drivers reboot, install correct drivers, reboot and then be nice to everyone you ever meet and it'll show up. It's a real pain but you can get there. XDA tutorial all the way there!
Click to expand...
Click to collapse
What are the driver links if you have? I already installed the OnePlus drivers.

ninjeratu said:
Also: Try a different cable.
A cheap cable could have a charging pin layout but lack data pins connections.
9 out of 10 issues with connecting to PC and getting odd behaviours is due to a bad/wrong cable.
Click to expand...
Click to collapse
I used the OnePlus cable and another cable.

Driver issues win 10
Find the excellent tutorial here on drivers.
For some reason my phone didn't show up but was able to receive commands. It was frustrating because I wanted to use the all in one XDA product but couldn't.
Even if you installed drivers they can be broken!
Do drivers from scratch per xda tutorial. Don't forget reboot!
Try different cables and usb ports! My front ones never seem to work!
Don't just try fastboot commands also try adb. Like I said mine wasn't seen properly yet it took the commands.
Unless your windows is a years old install it shouldn't require reinstall.
Factory phone reset might help.
Best of luck!

Pixel 2 XL not connecting to PC

UPDATE:
I ended up just returning the phone and getting a new one (it was an Ebay seller so they didn't try to repair it).
New one connected instantly and I can use ADB and Fastboot perfectly.
Definitely something wrong with the first one, weird how the headphone adapter and OTG worked though.
Original post:
I know there are other threads on this but I really need some help on this.
I just got a Pixel 2 XL, but it won't connect to the PC. At all. No connection noise, nothing in task manager. The only change between plugged and unplugged is that the phone starts charging. No notification appears when I plug it in, it doesn't even try to connect.
I've tried three different cables, three different PCs, I've fiddled with USB debugging. I can't do anything with drivers on Windows because nothing changes in device manager when I plug it in.
I don't have any computers with USB C ports so I can't test that but I've tried all different ports on my PC (USB 2 and USB 3).
The headphone adapter works and when I plug in my old HTC U11's earbuds it says "accessory not supported" (which it's supposed to say, those earbuds only work on specific phones) so the port can't be completely broken.
I also tried plugging a USB drive into the full size to C adapter that comes with it and it reads it perfectly. I copied my music library onto the Pixel by putting it on a flash drive first.
I realise it may just be defective but it would be a huge pain if I got a new one only to discover that it was something that I'm doing or my PC causing it. And is it even possible to be defective when it can output music and even transfer files from a flash drive through that same port?
What else can I try?

megaman1574 said:
I know there are other threads on this but I really need some help on this.
I just got a Pixel 2 XL, but it won't connect to the PC. At all. No connection noise, nothing in task manager. The only change between plugged and unplugged is that the phone starts charging. No notification appears when I plug it in, it doesn't even try to connect.
I've tried three different cables, three different PCs, I've fiddled with USB debugging. I can't do anything with drivers on Windows because nothing changes in task manager when I plug it in.
I don't have any computers with USB C ports so I can't test that but I've tried all different ports on my PC (USB 2 and USB 3).
The headphone adapter works and when I plug in my old HTC U11's earbuds it says "accessory not supported" (which it's supposed to say, those earbuds only work on specific phones) so the port can't be completely broken.
I also tried plugging a USB drive into the full size to C adapter that comes with it and it reads it perfectly. I copied my music library onto the Pixel by putting it on a flash drive first.
I realise it may just be defective but it would be a huge pain if I got a new one only to discover that it was something that I'm doing or my PC causing it. And is it even possible to be defective when it can output music and even transfer files from a flash drive through that same port?
What else can I try?
Click to expand...
Click to collapse
Which version of Windows are you trying it on? Can you try it on a Win 7 machine? It's not the phone but the drivers. There are various threads around that will guide you thru it but you have to search some. Some are a little old but they should work. Keep at it, you'll figure it out. There is something in device manager that you need to tinker with if I recall correctly. Happened to me on my Pixel OG and it took me a few days to finally figure it out. Total pain but relief once you get it.

If you have a relatively new computer (Win 7 or newer) then it *should* recognize the Pixel. But sometimes Windows can be a pain in the ass. Download & install Android SDK which will install the latest Android USB driver, reboot the computer, then connect the Pixel again.

sublimaze said:
If you have a relatively new computer (Win 7 or newer) then it *should* recognize the Pixel. But sometimes Windows can be a pain in the ass. Download & install Android SDK which will install the latest Android USB driver, reboot the computer, then connect the Pixel again.
Click to expand...
Click to collapse
I don't think I can install any drivers unless the phone shows up as something in device manager, which mine doesn't

megaman1574 said:
I don't think I can install any drivers unless the phone shows up as something in device manager, which mine doesn't
Click to expand...
Click to collapse
Your computer must have Android USB driver installed before it will recognize the phone.

sublimaze said:
Your computer must have Android USB driver installed before it will recognize the phone.
Click to expand...
Click to collapse
I'll search this in the morning. He needs to uninstall something.. dang it I forget. I'll figure it out tomorrow. Or search my posts from a year ago I'm sure it's there somewhere.
Sent from my Pixel 2 using XDA-Developers Legacy app

sublimaze said:
Your computer must have Android USB driver installed before it will recognize the phone.
Click to expand...
Click to collapse
What I mean is it doesn't show up at all. When I plug the phone in device manager doesn't change.

bobby janow said:
I'll search this in the morning. He needs to uninstall something.. dang it I forget. I'll figure it out tomorrow. Or search my posts from a year ago I'm sure it's there somewhere.
Sent from my Pixel 2 using XDA-Developers Legacy app
Click to expand...
Click to collapse
I had a look through your post history but I'm not sure what I'm looking for... And I can't figure out how to search a post history

megaman1574 said:
I had a look through your post history but I'm not sure what I'm looking for... And I can't figure out how to search a post history
Click to expand...
Click to collapse
Yeah I know, only goes back for like a year or so. This is the guide I followed and it worked. Some still had problems but check out the OP and give it a shot.
https://forum.xda-developers.com/pixel-xl/how-to/guide-fix-mtp-driver-windows-10-t3570625

This may be silly but when my phone was new I had the same issue. I had to go into the USB settings on my phone and change them from charging to file transfer.

I'm having similar issues to the OP, but I've had my phone since it was released. I have done everything known to man to try and get this working--updated Android Studio/drivers, both fixes listed HERE, tried numerous cables, rebooting phone and multiple PCs, still not getting my phone to get recognized at all.
My exact issue is this: I'm still on the August 2018 Security patch, so I wanted to update to October. Downloaded my files then went into Magisk and uninstalled (un-root) restoring stock boot. I waited a few hours before I could try to flash the OTA, but once I did, I connected the phone (USB-C to USB-C OEM cable) to my PC and it successfully connected in Debug mode. Ran "adb devices" and phone was seen. "adb reboot bootloader" successfully rebooted phone, but it did not go into bootloader mode for some reason, it just restarted in normal mode. The only problem is now the phone doesn't talk to my PC no matter what.... the USB-C to USB-C OEM cable doesn't even charge the phone let alone connect to give me file transfer options. If I try a USB-C to USB-A cable, the phone charges but the PC doesn't recognize my phone is connected. Debugging never works. Even my Car Charger (which is USB PD capable) doesn't charge the phone, I have to go back to my regular USB-C QuickCharge car adapter to get it to take a charger. I've disabled Debugging, changed default USB connection type to File Transfer, PTP, etc.
So, is there a way I can try to flash the OTA without connecting to a PC? Maybe even just flash the August Boot.img? I want to try updating the phone to see if that fixes my issues first. I am currently with an unlocked bootloader, no root and stock recovery, so I don't believe Flashify will work without getting root back... I think when I restored my stock Boot via Magisk, it FUBARed something. The only thing I can try is to use my USB-C to USB-A cable and see if fastboot recognizes the phone with that cable... the USB-C to USB-C cable is no dice in Fastboot.

Do you have another Android device? If so, (and it is rooted), you can run adb and fastboot from there. The binaries are available via the Magisk repository. Just grab a terminal emulator and a usb-otg cable and go to town. No driver issues, no fuss, no mess.
I was occasionally successful with a usb-c to usb-c cable, but sometimes the devices would get confused. The otg cable works every time, with the host end facing the adb/fastboot running device.

@hawkjm73 To whom are you talking to? If me, I don't have an OTG cable nor another rooted phone.
I did try the USB-A to USB-C cable and booted into Fastboot, which worked. I was able to at least boot into TWRP and get Magisk re-installed so I'm rooted. I booted the phone back up and still no USB recognition or Debugging. I'm going to wait to try a third PC to see if that will work in getting Debugging/ADB commands to work. All else fails, I'll just do a full Factory October flash without the wipe.
What's puzzling to me is why this all happened and why even my USB-C PD car charger won't work. Something strange is going on.
---------- Post added at 03:01 PM ---------- Previous post was at 02:25 PM ----------
Update: I grew impatient and decided that since my PC was seeing the phone in fastboot, I flashed the full October Firmware manually in fastboot (ran each command in the flash-all.bat one by one). As soon as it booted into the OS, Debugging and USB connectivity (both cables) turned back on. I haven't tested my Car USB PD charger, but I suspect that will work too.
I'm guessing when I uninstalled Magisk and tried restoring the stock Boot.img, something went awry and it was causing the connectivity issues.
So, if you can get your phone into Fastboot and your PC recognizes it, I would suggest a full system image flash, don't forget to remove the -w if you don't want to wipe.

megaman1574 said:
I know there are other threads on this but I really need some help on this.
I just got a Pixel 2 XL, but it won't connect to the PC. At all. No connection noise, nothing in task manager. The only change between plugged and unplugged is that the phone starts charging. No notification appears when I plug it in, it doesn't even try to connect.
I've tried three different cables, three different PCs, I've fiddled with USB debugging. I can't do anything with drivers on Windows because nothing changes in device manager when I plug it in.
I don't have any computers with USB C ports so I can't test that but I've tried all different ports on my PC (USB 2 and USB 3).
The headphone adapter works and when I plug in my old HTC U11's earbuds it says "accessory not supported" (which it's supposed to say, those earbuds only work on specific phones) so the port can't be completely broken.
I also tried plugging a USB drive into the full size to C adapter that comes with it and it reads it perfectly. I copied my music library onto the Pixel by putting it on a flash drive first.
I realise it may just be defective but it would be a huge pain if I got a new one only to discover that it was something that I'm doing or my PC causing it. And is it even possible to be defective when it can output music and even transfer files from a flash drive through that same port?
What else can I try?
Click to expand...
Click to collapse
Time for an RMA...just happened to me a month ago

WoJ... good follow-up update.

I ended up just returning the phone and getting a new one (it was an Ebay seller so they didn't try to repair it).
New one connected instantly and I can use ADB and Fastboot perfectly.
Definitely something wrong with the first one, weird how the headphone adapter and OTG worked though.