I've redownloaded every driver, and my cp still says "Unknown Device". ADB and Fastboot do not recognize it. I have last nights nightly flashed in.
Any suggestions?
You got debugging on?
And under Storage > Menu > USB computer connection > MTP is selected?
Lennyz1988 said:
You got debugging on?
And under Storage > Menu > USB computer connection > MTP is selected?
Click to expand...
Click to collapse
Yes, debugging is on. the phone is rooted, but now it will no longer connect to the pc.
Related
Please help if you can
My first 32gb Nexus 7 had no problems showing up as an mtp device on windows 7.
Am running a rooted 4.1.2 and all is well with mtp as well as adb, toolkits, etc.
I purchased one more as a gift, and that one can only be set to ptp in the internal storage settings.
If I try to set it to mtp, it takes, but does not show up in windows or in adb.
The only way to see it or use adb or a toolkit on it, is to set it to ptp which shows up as a camera with read only permissions.
Both tablets are using the same rom etc.
Have tried this on 2 PC's (win 7 as well as xp)
Any Ideas?
Thanks
On my (rooted) Stock 4.2.1 tablet, MTP mode only seems to show up if ADB Debugging is enabled.
Sort of odd; PTP will work whether or not ADB Debugging is turned on, but MTP only shows up when ADB debugging is also enabled.
If you have not enabled "Developer Options" on the tablet, go to
Settings->About tablet
and tap on the last entry ("Build number") 6 or 7 times in succession. This will allow the following menu item to appear under settings:
Settings-> {} Developer options
You can enable ADB debugging from there.
The PTP/MTP toggle control is at
Settings -> Storage -> Menu (top RH corner) -> USB Computer connection
good luck
MTP vs PTP
bftb0 said:
On my (rooted) Stock 4.2.1 tablet, MTP mode only seems to show up if ADB Debugging is enabled.
Sort of odd; PTP will work whether or not ADB Debugging is turned on, but MTP only shows up when ADB debugging is also enabled.
If you have not enabled "Developer Options" on the tablet, go to
Settings->About tablet
and tap on the last entry ("Build number") 6 or 7 times in succession. This will allow the following menu item to appear under settings:
Settings-> {} Developer options
You can enable ADB debugging from there.
The PTP/MTP toggle control is at
Settings -> Storage -> Menu (top RH corner) -> USB Computer connection
good luck
Click to expand...
Click to collapse
Thanks, but I guess I was not very clear.
ADB Debugging is turned on but only works in PTP mode.
MTP does not work at all, even though it's checked.
ganovim said:
Thanks, but I guess I was not very clear.
ADB Debugging is turned on but only works in PTP mode.
MTP does not work at all, even though it's checked.
Click to expand...
Click to collapse
Even after reading this and your 1st post, I am still a little uncertain.
I *think* you are saying that you want to get MTP working on the second unit. And I *think* you are also saying that (additionally) ADB only seems to work when you have PTP mode selected.
Reading between the lines - are you testing things with the same computer for both tablets? (Or, another way to put that, if the answer to this previous question is no, do you see any "Unknown Device" messages in the Device Manager when you toggle things around?)
I fooled around with mine not more than 30 minutes ago. Leaving it plugged into the PC the entire time (Win 7 Pro x64), I could toggle USB Debugging on/off and back and forth between PTP/MTP. Although I didn't actually try a live ADB session in both MTP/PTP modes, the file browser thing would pop up for PTP mode no matter what I had ADB debugging set to, and for MTP mode that would only happen if I had ADB debugging enabled. At no time did I see any unrecognized devices in the Device Manager.
And I think that what I just said above doesn't help you.... arghh.
MTP vs PTP
bftb0 said:
Even after reading this and your 1st post, I am still a little uncertain.
I *think* you are saying that you want to get MTP working on the second unit. And I *think* you are also saying that (additionally) ADB only seems to work when you have PTP mode selected.
Reading between the lines - are you testing things with the same computer for both tablets? (Or, another way to put that, if the answer to this previous question is no, do you see any "Unknown Device" messages in the Device Manager when you toggle things around?)
And I think that what I just said above doesn't help you.... arghh.
Click to expand...
Click to collapse
First of all thanks for the interest.
Bottom line is as follows.
MTP mode does not work period.
However....
when I boot into recovery, (TWRP) the pc sees the usb connection, and I can use adb commands.
So it leads me to conclude that there is something off in the System files. But (and it's driving me nuts)
they are a clone of the first (MTP functioning) Nexus 7.
Thanks again
@OP
You can uninstall the drivers(all of the n7 drivers), then unplug, then replug it in, then let it install its drivers again. This solved the mtp issues other users had.
Just flashed PA to try it out and now my PC doesn't recognize that the device is plugged in. USB debugging and everything is correct. What else am I missing? Thanks.
What do you see in your computer device manager?
checcles said:
Just flashed PA to try it out and now my PC doesn't recognize that the device is plugged in. USB debugging and everything is correct. What else am I missing? Thanks.
Click to expand...
Click to collapse
Settings > Storage > Touch 3 dots in top right > USB computer connection > Check "Media device (MTP)"
Username invalid said:
What do you see in your computer device manager?
Click to expand...
Click to collapse
Thanks. It showed that the drivers weren't installed (yet they were but I just did it again)
bounti said:
Settings > Storage > Touch 3 dots in top right > USB computer connection > Check "Media device (MTP)"
Click to expand...
Click to collapse
This fixed it after I reinstalled the drivers. Thanks to both of you.
ok,thanks
I have my sg4 plugged into my laptop, but it is not showing up in the android debug monitor. I ran it as administrator, and the device does show up in my computer.
Do you have debugging enabled in Developer options? Make sure you have the right drivers installed otherwise you may need a reboot on both devices
I have the Nexus 7 drivers installed, and the adb interface.
and I do have debugging enabled.
I think that you need the Samsung drivers. The Nexus 7 drivers are different ones. So download them here: http://www.samsung.com/us/support/downloads
They should also be installed if you install Kies.
sniper8752 said:
I have my sg4 plugged into my laptop, but it is not showing up in the android debug monitor. I ran it as administrator, and the device does show up in my computer.
Click to expand...
Click to collapse
There is a well-hidden menu that you may need to access.
Assuming you have developer mode enabled...
- Go to Settings, then Storage
- Click on the menu (top right)
- Select USB computer connection
You'll see 2 boxes:
- Tick 'media device'
I found that if neither box was ticked, I couldn't see my device...
Maybe the first time the dialog says "Allow this computer debugging" appears, you clicked NO.
Try go to Developer options and click "Revoke USB debugging authorizations", and reconnect the device.
Hi, I am having problems with rooting, and any help will be greatly appreciated.
Problem: No ADB connection.
Here are the steops i am stuck in:
Step 2.2 and step 2.3.
2.) Plug your device in via USB.
- Wait a few minutes to see if your computer auto-configures MTP.
This was done by windows.
3.) Disable MTP mode:
- Settings > Storage > Menu item in upper right > 'USB computer connection' > Uncheck MTP.
- Wait a few minutes to see if your computer auto-configures MTP.
Nothing happened.
Going on with the installation(2.4-2.6) even with this not done, i found that i managed to see the nexus device , and that it installs a driver after turning USB debugging on.
However, continuing on with step 3, i can't install the Android ADB interface drivers.
Thanks for your time.
Lee
Step 2 is listed below for reference.
Step 2: Configuring your MTP drivers
- This step is to ensure you can access the files on your devices sdcard through windows explorer via USB.
1.) Disable USB debugging:
- Setttings > Developer Options > uncheck 'USB Debugging'.
2.) Plug your device in via USB.
- Wait a few minutes to see if your computer auto-configures MTP.
3.) Disable MTP mode:
- Settings > Storage > Menu item in upper right > 'USB computer connection' > Uncheck MTP.
- Wait a few minutes to see if your computer auto-configures MTP.
4.) Re-enable MTP mode:
- Settings > Storage > Menu item in upper right > 'USB computer connection' > Check MTP.
5.) Re-enable USB debugging:
- Setttings > Developer Options > Check 'USB Debugging'.
6.) Check to see if you can access your devices internal storage through explorer using the button below.
- 'Launch Explorer' > 'My Computer' > 'Devices' > Your Nexus device.
7.) Proceed to Step 3.
Click to expand...
Click to collapse
Hello,
Since the update of my Nexus4 to lollipop , it is no longer recognized by my PC running Windows 7.
ADB can view the phone when USB debugging is switched on.
When it is off, nothing.
Device manager displays : Android Device/Android Composite ADB Interface in USB debugging.
When it is off, nothing.
Any help ?
Thanks
edited for more information...
yauyau said:
Hello,
Since the update of my Nexus4 to lollipop , it is no longer recognized by my PC running Windows 7.
ADB can view the phone when USB debugging is switched on.
When it is off, nothing.
Device manager displays : Android Device/Android Composite ADB Interface in USB debugging.
When it is off, nothing.
Any help ?
Thanks
edited for more information...
Click to expand...
Click to collapse
Thats normal. ADB requires usb debugging to be turned on.
venu123 said:
Thats normal. ADB requires usb debugging to be turned on.
Click to expand...
Click to collapse
Seems not quite normal to me. Because besides a ADB connection, there should be an MTP connection and Game connection.
---------- Post added at 02:57 PM ---------- Previous post was at 02:48 PM ----------
venu123 said:
Thats normal. ADB requires usb debugging to be turned on.
Click to expand...
Click to collapse
Assuming you have the android drivers on you PC. and USB debugging ON
Go to settings -> Storage -> Hit the three dots in to top right -> USB Computer Connection -> and check MTP box.
So MTP is hidden and disabled by default. Why is unclear. Seems a small bug to me.