[Q] L9 Won't Connect to USB - LG Optimus L9 P760, P765, P768, P769

I have an Optimus L9, which was working fine a month ago. I have made no changes to it, but now when I plug in to USB the options for connecting do not come up on the phone, and the PC doesn't recognize that it has been plugged in...However, it still charges fine.
I have:
Played with the USB options.
Turned "Ask on connect" on and off
Checked to make sure USB Debugging was off
Installed the latest LG drivers
Nothing, I cannot connect to USB to transfer files, and my phone doesn't recognize (with the popup four options) at all that a USB cable is plugged in besides charging fine.
I have googled and found no answers to my problem.. was hoping someone here might know.

desertw0lf said:
I have an Optimus L9, which was working fine a month ago. I have made no changes to it, but now when I plug in to USB the options for connecting do not come up on the phone, and the PC doesn't recognize that it has been plugged in...However, it still charges fine.
I have:
Played with the USB options.
Turned "Ask on connect" on and off
Checked to make sure USB Debugging was off
Installed the latest LG drivers
Nothing, I cannot connect to USB to transfer files, and my phone doesn't recognize (with the popup four options) at all that a USB cable is plugged in besides charging fine.
I have googled and found no answers to my problem.. was hoping someone here might know.
Click to expand...
Click to collapse
I tried using another USB cable (my GF has the same phone) and nothing. Her phone pops up the options, so it appears the issue is with the phone itself... I guess a backup and restore are my only options?

I have the same issue, and it was from clearing out the phone to reinstall 10d (metropcs), then upgrade to 10e...i cant get it to work.

I just found 3 other people who had similar problems to this. Although most of them did something to make it unable to connect. Try Kuma's persist.img here http://forum.xda-developers.com/showthread.php?p=49475336#post49475336

engeering mode
Hello, my I was the same and so solve
1: enter engineer mode (dial 3845 # * 768 # or 3845 # * 769 # or 3845 # * 760 # depending on your phone model)
2: Option port setting
3: Select CP Reset
4: select pot again setting
5: cp usb
end
Sorry my english

Related

[Q] [Help] Optimus V is not charging

Hi all... i got my V for a month and now it is not charging anymore. neither from the ac adapter nor my computer usb..and my computer couldnt detect my phone is plug to the USB port....just nothing pops out. The debugging mode status icon, and the storage icon is not shown on my phone.
basically... i tried everything i found on Google...
reboot my phone, pop out the battery, change cable[from other optimus V], changed battery, different ports on my computer, different computer, different AC adapter, different SD card, format my SD card, factory reset, and the last thing i tried is to rooted my phone and flash with a I.H.O CM7.1 ROM.
no hope at all; however, when i plugged to the usb port or the ac adapter, then i take out the battery.. the phone does power up and say required battery....
so, if anyone had this problem before and solved it.. please help me out. between, i cant return the phone anymore.. it is over a month.
forgot to mention... it is the second time this charging issue happened. the first time, it fixed itself after i plugged into the PC, windows recognized it, and installed the drivers. [well, i already installed the driver before this happened, because i was doing some coding and debugging]
this time.... windows is doing nothing, no message pop out, no new driver found.. just nothing. and my phone doesn't shows the debugging icon on the status bar even thought i ticked the debugged mode On, and connected to the usb.
sorry for my bad grammar =[
maybe see if your pc recognizes it while rebooted into recovery.
you could also try removing all the lg and Android drivers in device manager (select show hidden devices to get at them) and then plugging the phone into the pc again.
or use a Ubuntu "live cd" to check the connectability... micro$oftware is uppity, my kid's windoze computer doesn't like my v, although it used to see it fine.
I've also read that toggling debugging, disconnecting and reconnecting the cable, then toggling usb debugging again can help.
also, froyo roms are supposed to go to a charge mode when turned off but still plugged in.

[Q] USB problem

Yeah, so i've read plenty of topics about USB problems, but none gave me the
anserw.
I'm running Villain ROM 3.0. I just cant connect my phone to the computer (Mac).
It work well before also after flashing Villain.
What i tried:
1. connecting my phone without usb debuging ->phone gives the sound and report in the notification bar : "MTP - initializing" then "USB Connected, MTP-connected" But it does not gives a connection with my mac.
2. Connecting my phone with usb debuging ->phone gives the sound, but nothing happens. nothing in the notification bar neither on the computer. It's strange becouse before it was making the same sound and giving me the info in the notification to connect.
3. I've also tried KIES air it works fine. i can see my phone content, but when im trying to send one file (130mb) there is no reaction to this.
Also some time ago i was able to get usb working by simply choosing usb debuging and restarting phone.
But now i have no acces to my storage
Please help
I have a similar problem.
When I connect my SGSII to my PC (with USB Debugging On) I see 2 Removable Drives in Windows' Explorer. If I click on either one I get the "Please Insert Disk". If I connect to the same USB with USB Debugging off, then Kies Starts but does not connect.
Now the weird bit, if I do the same thing in the next USB port, then everything works fine.
Going back to the first USB slot then the problem reappears.
The 2 USB slots are next to each other and go back to the same controller on the motherboard. I have removed Kies and reinstalled Kies. I have uninstalled all the drivers. I have even changed the USB cable. When I plug a USB External Hard Drive into either USB, it works fine.
Maybe the phone just likes the one connection per computer. I'll have to test that out in my work's PC.
Update:
managed to get a microUSB cable and tested it on my work's PC. Exact same situation. Both PCs run Windows XPpro.
Has anyone else noticed this?
Now, when you said that, i checked with my second usb por, and everything works fine .
So thanks for your help. One working with sgs2 usb port is enought for me

[Q] galaxy s4 slow to start charging and will not connect to computer

I have searched all the threads I can find and can't find an answer so please forgive me if this is a common problem.
To make a long story short I had to replace my LCD and then the digitizer stopped working. I did a factory reset which solved the problem but then when I tried to install my backup I messed everything up and nothing was working. I could no longer connect any computer to my phone using several different USB cables. All my google services were not working along with my proximity sensor and light sensor.
I was able to get a fenny rooted stock rom to install using Mobile Odin Pro and I seem to have most of everything working again except the USB port.
I was unable to connect to a computer or charge. After trying everything I could find online including factory resets, *#0808# settings, USB debugging mode, I broke down and ordered a new USB port which I installed into my phone and I am having the same problem with the new port installed.
When I plug my phone into the charger it does nothing however if I turn the screen off and wait about 3 to 5 minutes the LCD will light up and indicate that it is charging and then the phone takes a charge. If I use the phone while it is plugged in it will never indicate that it is charging, I have to power the screen off for several minutes. I have tried a second known good battery and I have the same issue. I have tried two separate factory chargers which both work fine on my wife's S4 and neither work properly with my phone.
When I plug it into my computer I do not get the normal message to select MTP or camera. using the settings recommended on *#0808# of USB of AP and USB Settings of MTP + ADB.
If I use *#0808# and select CP under the USB tab and then plug the phone into my computer I hear my computer instantly make the sound it usually makes when you plug a usb device in but nothing else happens. This same computer works fine with my wife's other Galaxy S4 and I have tried this on three separate computers with the same result so I don't think it is a computer or usb cable issue.
Is there a way that I somehow deleted drivers or a file on my phone that controls the USB port? I am unable to attach screenshots on this post for some reason so below is what my about phone screen shows. Is it possible I have the wrong kernel or radio installed that could be causing this issue?
Model Number
SGH-M919
Android Version
4.4.2
Baseband Version
M919UVUEMK2
Kernel Version
3.4.0-g4224a08-dirty
[email protected]#8
Tue Mar 25 18:18:23 MDT 2014
Build Number
KOT49H.M919UVUFNB4
SE for Android Status
Permissive
Secure boot status
Type: Samsung
Security Software Version
MDF v1.0 Release 2
When I dial *#0808# this is what I see
USB
______________________________________
() CP
(*) AP (I selected AP)
USB SETTINGS
_______________________________________
(*) MTP (this is currently selected)
() MTP + ADB (I have tried this setting also and it did not work)
() PTP
() PTP + ADB
() RNDIS + DM + MODEM
() RMNET + DM + MODEM
() DM + MODEM +ADB
OK REBOOT
I would really appreciate any help someone can give me. Thank you in advance. If anyone is local to Rhode Island and willing to help me out in person I would be willing to pay you for your time, I just want to get this to work as I use my phone for work and need to be able to transfer files to my computer.
Last night I changed the SD card and when I did I plugged it into my computer and it started to charge. After about 10 minutes the computer beeped and I was now able to access my files on both my phone and SD card but it was not showing as connected using Kies.
It worked off and on today but now when I plug it in device manager shows qualcomm CDMA technologies MSN with a yellow explanation point saying driver not installed. When I plug my wife's s4 into this computer it works fine. Is it possible my s4 is somehow showing up to my computer as a galaxy note? That is the phone that I find in Google when I search that qualcomm driver.

[Q] Galaxy S2 GT-I9100 won't connect to PC via USB

I'm having an issue with my Samsung Galaxy S2 GT-I9100 (running on stock Jellybean 4.1.2) no longer connecting to the PC via USB. It had been working fine up until a few days ago.
When I connect the USB cable, it only charges the phone. It doesn't show that it is connected in MTP mode and no USB options appear in the pull down notification bar. I tried locating the phone on the computer in Windows Explorer and the Device Manager, but it wasn't there at all. There also wasn't any unrecognised device in the Device Manager.
I’ve tried the following:
Using different USB cables. Tried two official Samsung cables, a Belkin charge/sync cable and a generic cable
Plugging into different USB ports on 3 different PCs/notebooks (running on Windows 7/8)
Turning on/off USB debugging mode on the phone
Going into Settings>Wireless and networks>USB utilities. After tapping "Connect storage to USB", it will prompt to connect a USB cable even though it is already plugged in.
Booting the phone in safe mode and connecting the USB cable
Installing the latest version of KIES. I had never used the software before but gave it a try. KIES wouldn't detect the phone
Uninstalling and reinstalling the latest Samsung drivers
Dialling *#7284# for the PhoneUtil options and checking it was PDA mode under the USB option.
Turning off the phone, removing then re-inserting the SIM card and battery
Cleaning the micro USB port on the phone
I have not made any changes to the phone (or PCs), so I'm not sure what has happened for the USB connection to stop working.
Your assistance would be much appreciated.
That is very weird. Are sure you didn't change the USB connection type?
danielbe said:
That is very weird. Are sure you didn't change the USB connection type?
Click to expand...
Click to collapse
Definitely sure.
I'm wondering if maybe the micro usb port is damaged, even though there's no problems charging the phone.
That is very possible, the port can be damaged in a way that only allows charging.
Hey guys, My micro-usb was damaged so i changed it with a new one... It didn't work and phone was charging instead of Mass Storage or Debugging mode !
I thought its fake and a bad quality micro-usb so i changed it again and still have the same problem.
I have the same computer, same cable and everything is same, even the programs which i installed in both phone and pc are same, but it wont connect to pc.
My moms phone can be connected with my cable.
Ok, before i change the Micro-Usb, it was fine but not charging as good as normal. I mean at least i was able to upgrade or downgrade my android version )
Can anyone help me ? I already did a factory reset and removed the SD card. No lucks ... ( i also tried other cables and other computers, but the problem is ONLY with my damn phone )
I'm running Android 4.0.3 KH3

LEMAX2 USB not working

Hi,
maybe one of the experts can help...
I have a LEMAX2 with X820_20S_ROW_CUOCO92 ROM.
Since half a year or so the USB-Connection to the PC does not work anymore. Tried several cables and several PCs, no change.
I can boot the phone in RECOVRY Mode, but it It shuts itself off immediately.
I can enter fastboot mode, but the phone is still not recognized by the PC.
When I connect the phone via MyPhoneExplorerClient, WLAN works, but MyPhoneExplorerClient says 'USB-Cabel 'Not conneced.'
When I unplug and re-plug the USB-Cable, for a short time MyPhoneExplorerClient says 'USB-Cabel 'conneced', but no setting option for USB configuration can be found and after a second or so MyPhoneExplorerClient shows 'USB-Cabel Not conneced' again.
I tried to find out how to change or repair the firmware but all howtos require a USB Connection.
Mayby I accidentaly removed some system software responsible for the USB Connection?
Any idea?
:crying:TWSMS

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