Mtp OTG doesn't work - Google Pixel 4a 5G Questions & Answers

Hi ! I don't know why but I want to connect my Pixel 4a 5G Yesterday on my mac and today on Pc the pixel is not recognized.
I have uncheck usb debuging and check it again but not working.
My Pixel are on last Android 12 and root with magisk. it is possible that a mode can create a problem with the OTG ?
I have test on Safe mod doesn't work too
I have connect an usb type c usb key it recognize.
I have test connect on plateform tools and on terminal ./adb devices, have message on pixel to allow my computer and it recognize but not Android File transfert ?
I think stay the new update and see if I can update it !?
I don't understand why ?
Thanks

Hi ! I post again because when I connect usb key mtp works and if I connect to my mac and go to settings usb parameters and choose transfert files/Android auto that work but never had notification pop-up for choose it

USB is a master/slave protocol. When you plug in an otg cable, your phone's USB controller switches into host mode. Your computer's USB is always in host mode. So your effectively trying to get two master devices to communicate which USB does not support.

Related

can we use it as usb mass storage?

Was wondering is there a way to use our galaxy as a universal usb mass storage device, using default windows drivers?
I've tried it but I can't seem to connect my phone to the pc unless I install either the usb drivers (extracted from Kies) or install kies itself.
In ubuntu can just hook this up no problem why in windows doesn't it work? or am I doing something wrong? Any help would be great.
thanks.
Wich part of Android Development Forum you dont understand?
why don't you can suggest me one or point me in the right direction or notify a mod instead of posting something that's not helpful and insulting?
and indicate why this would not go in development? yeah it can be in general but why can't it be in here explain the reason. This can be the initiation of someone developing a hack to allow to use our device in windows without INSTALLING the samsung drivers?
You don't need to install any samsung anything.
Settings -> About Phone -> USB Settings: Ensure "Ask on connection" is selected.
Plug in USB cable, connect to PC.
Select "Mass storage" on the menu. Your device is now connected and charging, but you don't have access to the data yet.
Now drag down the notification bar from the top of the screen. It says "Ongoing: USB connected. Select to copy files to/from your computer". Press that. Press "Mount".
Your Internal SD and external SD now mount on your PC and appear as drives.
gl
Edit: If that doesn't work for you then there's something wrong. I haven't installed Kies on any machine I've connected the SGS to. It may be that you require Admin rights to install the usb drivers that are sent over as the device attempts to mount (not sure).
hmm that's weird. My machine says it doesn't recognize it when I do that. And all the machines I use I have to install the drivers for it to work even though I always use "use as mass storage"
hmmm I better do more investigation then.....
just tried this on a winxp machine without any driver/kies installed and yeah can't get to the sd card. It has an exclaimation mark next to the Usb mass storage device in device manager and there an "unknown" device detected in the "other devices" section of device manager....
Try the always ask option. Sometimes the use mass storage as default choice is a tad cranky.
If not, try on another usb port with another microusb cable. I've tried on 3 pcs/laptops and all 3 times no drivers were needed.
You also have to pull down the notifcation menu of the phone (once connected) and click the usb symbol and then choose "mount" (yeah, kinda sucks)
NeoXTC said:
hmm that's weird. My machine says it doesn't recognize it when I do that. And all the machines I use I have to install the drivers for it to work even though I always use "use as mass storage"
hmmm I better do more investigation then.....
Click to expand...
Click to collapse
the drive that it installs when you connect your device to your PC with selecting USB Mass Storage is a normal USB driver, like when you plug in a normal memory stick...
Check your usb port or cable and try other ones
Or install Kies then uninstall it.
It will leave the Samsung USB drivers installed as they are in a seperate folder.
really weird could it be a winxp problem?
At work usb mass storage doesn't work UNTIL I install the samsung drivers. At home tested on a win 7 machine without installing any drivers and it works.
Would front usb port be different to teh back usb port? It's just that front usb port doesn't work if I don't install drivers, after install drivers works fine.
hmm I should test the back usb port. It's pissing me off how I can't use usb mass storage at work until I install the drivers (or would it be a windows update issue how windows don't have latest usb drivers?)
NeoXTC said:
really weird could it be a winxp problem?
At work usb mass storage doesn't work UNTIL I install the samsung drivers. At home tested on a win 7 machine without installing any drivers and it works.
Would front usb port be different to teh back usb port? It's just that front usb port doesn't work if I don't install drivers, after install drivers works fine.
hmm I should test the back usb port. It's pissing me off how I can't use usb mass storage at work until I install the drivers (or would it be a windows update issue how windows don't have latest usb drivers?)
Click to expand...
Click to collapse
both win7 and xp require to install that usb driver unless you've plugged it in before... you definitely don't have to install the samsung drivers before you use the Mass storage function as my office computer (XP) is not allowed to install any other driver/software apart from normal USB mass storage driver in which it's pre-installed in your PC when you install the OS...

Removable Disk vs Galaxy Note when connecting to PC

When conecting my Note to a Winows PC via USB, on some computers I get 2 Removable Disks (i.e. E: & F, and in which to enable these drives to be viewed, I have to go to the alert screen on my Note and select enable USB.
Other times when connecting the Note to a PC, I get a Samsung Note listed un My Computer, and in that case I can just click on it and it will allow me to view contents of Note without having to enable it via the phone.
Any idea why this is?
Thanks
do you have usb debugging enabled?
The first Option called Mass Storage (Faster file transfer)
And the second one called MTP (Media Transfer Protocol).
Richy99 said:
do you have usb debugging enabled?
Click to expand...
Click to collapse
ranjan.alva said:
The first Option called Mass Storage (Faster file transfer)
And the second one called MTP (Media Transfer Protocol).
Click to expand...
Click to collapse
Aha...
When I have USB Debgging on I get the the Mass Storage (phone shows up as removable disk) and when I have USB Debugging off I get the MTP (phone shows as GT-N7000)....
Thanks to you both!
Was searching for the same..glad you have posted...thanks guys!!!
Sent from my GT-N7000 using xda premium
Advantage of MTP is, while trying to copy some media files it ll ask you to "convert and copy". so that Note can play that media file.
To add to it!! MTP mode is slower than usb mode and while on MTP mode u can access the card on phone and computer simultaneously!!
SHOT from my LOADED GT-N7000!!
This is not the case for me
I have USB Debgging enabled, since I use adb for some stuff, however, usb will always be in MTP mode!
i disabled USB Debgging and tried it then enabled it again but it is always in MTP.
does anyone know why?
i am using rooted stock rom.
fduraibi said:
This is not the case for me
I have USB Debgging enabled, since I use adb for some stuff, however, usb will always be in MTP mode!
i disabled USB Debgging and tried it then enabled it again but it is always in MTP.
does anyone know why?
i am using rooted stock rom.
Click to expand...
Click to collapse
Bub,
Before you connect the cable open settings> wireless and network > usb utility > connect usb storage then it will ask you to connect the cable. Connect the cable and it should mount the phone as usb storage...
Hit thanks if it helped
Peave out!!
SHOT from my LOADED GT-N7000!!
geo.samuel said:
Bub,
Before you connect the cable open settings> wireless and network > usb utility > connect usb storage then it will ask you to connect the cable. Connect the cable and it should mount the phone as usb storage...
Hit thanks if it helped
Peave out!!
SHOT from my LOADED GT-N7000!!
Click to expand...
Click to collapse
"wireless and network" OMG, i remember seeing the usb setting somewhere then i looked all over but of course not inside "wireless and network" !! why here, should be under storage or something more related...
anyway, thanks for the help
I think i have similar problem here. The only thing is that i could not connect to Samsung Kies. When I try to troubleshot it, connection error occurs.
What would I possibly do about it?

[Q] Connection problems via USB

That's me again
Ok, when I finally decided to upgrade my Tab thank to your help I discovered that the connection via the USB is not working at all !
I have Kies and obviously the drivers are installed.
When I connect the Tab to the PC i get the 3 options for choice:
1- Samsung Kies
2- Media player
3- Mass storage
When I choose the Kies option the Kies can't recognize and connect the Tab even after the troubleshooting process.
When I choose the mass storage and after the mount also nothing happen and there is no new drives in My Computer.
I tried to connect the Tab to PC with no drivers for Samsung at all and
strangely, the same effect.
There was no notification about new hardware connected to the PC and the question about installing drivers for that new discovered hardware ?!
I suspect that is some thing wrong with the cable although I can charge the Tab and some kind of recognition is established between the PC and the Tab.
Do you use any usb hubs or extentions? If yes.. don't use it. You have to connect your tab directly to the usb port on your pc with the original cable..
If you want go to connect as usb storage, you have to change the usb connectivity on your tab:
system settings > wireless and networks > USB > Connect to PC
If you want ODIN to recognize ur tab, you need to turn on the USB debugging mode:
System settings > applications > development > Check USB Debugging.
For kies, well.. it's always a little unreliable.
The USB cable is connected to the USB port on the mother board
The debugging option is checked
When I run Odin, the ID:COM window is empty.
That's means NO CONNECTION
OK, I solved the problem with new original USB cable

Cant Connect to PC

hello guys can you help me coz i cant connect my lg optimus 2x to my pc
when i connect my o2x is charging but my pc cant recognize it
i tried reinstalling drivers, change usb cable, change my OS from win7 to xp, flash stock rom ( cant flash because my pc cant recognize my o2x so i cant start flashing), use nvflash (my pc cant detect apx device)
brymarti said:
hello guys can you help me coz i cant connect my lg optimus 2x to my pc
when i connect my o2x is charging but my pc cant recognize it
i tried reinstalling drivers, change usb cable, change my OS from win7 to xp, flash stock rom ( cant flash because my pc cant recognize my o2x so i cant start flashing), use nvflash (my pc cant detect apx device)
Click to expand...
Click to collapse
please dont use any USB hubs...connect it to the USB port on the motherboard side....normally on the rear side for the Desk tops.....on the laptop all ports are directly connected normally...
secondly, what is your config? ROM?Kernel?please state your current configuration which can allow others to understand the situation.
Thanks
yeah i dont use usb hub i connect it directly i tried it on my laptop but its not working
my o2x dont say that usb debugging is connected it only charge
im on stock GB now 2.3.4 v20g
Don't want to hijack this thread, just got the same problem. (Not a complete noob here, rooted lots of different devices)
Bought a used 2x today. Froyo 2.2.2 german stock on it.
It just doesn't show the prompt that USB is connected
Tried:
- LG Mobile Driver from version 2.x.x up to 3.7.2
- on Win7 32 bit, Win7 64bit, Win XP 32 bit on various USB ports
- LG PC Suite obviously doesn't connect too
- checked/unchecked USB debugging, USB mass storage and all the obvious settings
- tried different cables
Would be really great if someone experienced could point us in the right direction.
EDIT:
After lots and lots of google I found out about a menu when dialing: 1809#*990#
With these options available:
CP Image Download
FET Disable
FET Enable
AP UART
CP UART
AP USB
CP USB
CP UART gave me at least a life sign once by saying that Windows wasn't able to recognize the device.
Is this issue really unsolvable?
Sorry for the bump, but I got some update.
when dialing the above mentioned 1809#*990# in the Port menu, switching from default AP USB to AP/CP UART gave me life signs.
After switching to AP UART I linked the Unknown device driver to lgusbdiag.inf located in C:/ProgramFiles(x86)/LG United Mobile Driver.
Suddenly it started installing it and is now recognized as: LGE Platform Android USB Device.
Once disconnected I lose USB again, I'm able to recreate the first steps though even in default AP USB mode by now.
The only thing I need USB for is for flashing a custom recovery but the only thing I don't have is ADB somehow : / Clockwork telling me: device not found.
Any help on this one?
any idea guys about my problem?
Have you tried my method?
After manually installing drivers with CP UART on, switching back to default permanently enabled access with default AP USB settings as well.
i tried that but it only charge
theres a weird thing in my cp when i switch to cp uart my o2x says it charging even i dont connect it to my pc or charge it
Ap uart - p990 / p999
I have LG P999. rooted and cyanogen.
None of the special DTMF dialing # codes is not working (also code changed from 990 to 999) (i sow some other in another posts)
is anybody know a way to change to AP UART by software (with eclipse...)
or with a special cable?
i need to use AP UART - meaning to have a serial com in AP(app).
Thanks,
Tamir
guys,
Have you tried to install MyPhone Explorer and try the same....it can connect your device via wifi,USB or Bluetooth....so some way should work....
any Android version above Froyo(included) should work....I use this always...one of very useful and bug free apps.
Try it

Can't Use USB File Transfer - Android Driver indicates failure

Hi - For a long time, my OP3T worked fine when I would connect the USB to do file transfers.
However, for a few weeks now, USB File Transfer stopped working. on my home PC. I know that there must be some issue with my PC because USB File Transfer works fine with my Win10 work PC.
PTP transfer seems to work OK on the Home PC. When I look at the Other Devices >> Android in Win10 Device Manager, there is a exclamation point indicating a driver failure. I have tried installing/reinstalling the official OnePlus USB drivers, but no luck.
Can anyone help?
Thanks,
¿GJ?
Try this:
https://www.howtogeek.com/195607/ho...evice-to-show-up-in-file-explorer-if-it-isnt/
If that's no help try the Google USB Drivers:
https://developer.android.com/studio/run/win-usb

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