yashsingh1/xdaforums huggingface dataset:
[Desire HD Q&A, Help & Troubleshooting] kiza40:
The problem seemed to be a corrupted Call recorder application. When in/out calls were made with misbehaving phone, Call recorder was not recording those calls but they appeared in Call History list. I had to remove it and then do a fresh install. It works fine for now. Thanks. Hvala.
[LG Optimus 2x] Air_Mike:
Hi all,

I have problem with connecting my O2X to laptop.

When I connect phone to laptop phone start to charge, but USB connection is not recognized and no notification on phone (top left corner) is shown.

It was working once, but since then my phone was updated via OTA to V10e and then to V10f yesterday.

My phone is on stock.

I've seen on other forum that people had similar problem but I didn't found any solution.

I've tried different USB cables, different laptop (home and business - on both was working once before), unnistaling drivers and similar.

Please help!!!

Thank You.
[LG Optimus 2x] overflow68:
I have the same problem and I still don't understand if it is hardware or software related.

In my case the usb sometimes stop working for a certain time, sometime a couple of hour, some time for a full day. After that magically start to work again.

I've tried every in my knowledge but without success.

You are not alone
[LG Optimus 2x] TrymHansen:
Using Topogigi 1.6 this exact thing hit me yesterday, I suddenly lost ADB-access (I was programming at the time, and suddenly couldn't upload the app to the phone anymore.) The "bug" top left had vanished, and no toggling of USB-debugging would turn it on again. I tried restoring froyo backups, tried wipe-install, didn't work. What finally solved it was to smartflash back to 10D. Very strange, I cannot find any logical reason for this behaviour, so it can only speculate it must be something illogical, like maybe overheating (wasn't overclocked.)

EDIT: Let me elaborate. When this happened I of course tried another cable, and what was extra weird was that it wouldn't even recognize a USB-connection, but it would charge. Plugging it back in the dock I normally use when programming would show a USB-connection, but no ADB. At first I was worried that perhaps the dock had pushed the pins in the socket too far in for the regular cable to get a connection. After smartflashing back to 10D though, both the dock and cable work as usual. So maybe, just maybe, a hot phone will expand certain areas around the usb-connection points either in the socket or on the motherboard. Again, just speculation. The usb-connection has worked fine since, using any cable.
[LG Optimus 2x] vladutz9:
Happened to me as well. In one day i can't connect my phone to the pc but after two weeks when i connected the o2x to a pc with vista the problem was vanished. I connected to my usual pc and the same it worked. let's hope that i will not have anymore this problem. It is possibility that your phone will revive i one day. good luck.
[LG Optimus 2x] TrymHansen:
I think I may have solved this particular mystery, I'm now able to reproduce it at will, and get usb/adb functionality back.

It happens through a combination of ADB crashes/bugs on a computer and a usb-stack crash/error on the phone.

I can reproduce it by plugging in another phone/tablet on the computer (while still having the phone connected), installing/running something from eclipse on the other device, unplug and replug the o2x and then try to run/install something on it via ADB. This invariably leads to the ADB-icon (the status-bar bug-icon) disappearing, *and* it will lead to the phones USB not working on another computer, or even another port on the same computer.

Funny thing is, if I reboot the phone, and plug it back on the same computer, this instantly leads to the same behaviour. USB will only get recognized on the same port it was plugged in the last time, and ADB will still not get activated. Trying to connect to another computer *after* this will not work.

The solution is simply to reboot *both* the phone *and* the computer (or just kill adb I guess) before plugging in anything.

Plugging in the phone while *either* the PC *or* the phone is in this confused state will lead to both devices malfunctioning in the same way as before, which is why you cannot simply connect the phone to another PC. (Although unplugging the phone, rebooting it *before* plugging in to another computer should work.)
[LG Optimus 2x] Air_Mike:
Thank You for info.

I just tried it but unfortunately it didn't work for me. I've tried restarting phone couple of times, plugin into different computers but phone still doesn't recognize usb connection (just charging).

I this the problem is in the phone and it maybe due to update to v10e and v10f.
[LG Optimus 2x] TrymHansen:
Hm, okay, your problem may be of a different kind. I'm not entirely convinced yet, as you don't mention having rebooted any computer. So just to satisify my curiosity, do exactly these steps in the following order:

1) Unplug the phone from the computer.

2) Power down the computer

3) Power off the phone

4) Turn on your computer

5) Re-install the LG USB drivers

6) Turn on your phone

7) Connect the phone

If this doesn't work then you indeed have a completely different problem, and we're back to speculating.
[LG Optimus 2x] mparack:
Trym,

Does that mean you were able to smartflash despite having USB connectivity problems? I had these problems with my first O2X and after I flashed MCR I couldn't connect to USB at all. Luckily this was within the exchange period and I was given a replacement handset which hasn't had these issues but then I am still using stock 2.2

I did try all combinations of reboots on the phone and also driver installs etc on the problematic handset but nothing worked then.
[LG Optimus 2x] TrymHansen:
That's exactly what it means, yes. It's never been a hardware problem (luckily)

You may of course have had a genuine hardware fault, after all usb-sockets are among the first things to break on any phone. I thought my phone was a goner as well, until I discovered the things mentioned in my post. It's a really sneaky affair, it would be impossible not to assume the phone is broken the first time you experience it.

EDIT: Removed invalid assumption.
[LG Optimus 2x] Air_Mike:
Just to report that I've tried everything, including connecting phone to computer on which my friend runs Nexus S with no problem and then connecting to computer on which my phone was never connected.

Is there easy way to revert to v10d (last version I know my usb connection worked)?

I don't want to experiment too much because this is my business phone.

Maybe I'll just wait for GB and V20e (I hope it will finally be released soon) and hope that this will resolve my problem, but until them I'm missing one of main functionality :(

What a waist, since I get the phone with all that fuzz about it, is nothing but problem after another: rebooting, battery drain, wifi problem, usb connection... whats next?
[LG Optimus 2x] TrymHansen:
Assuming your usb isn't actually broken, yes, it's pretty easy. Download 10D from here: http://xdaforums.com/showthread.php?t=1035041

Instructions here: http://xdaforums.com/showthread.php?t=1008070

NOTE: The instructions are for flashing baseband only. In addition to that, you also need to select the .bin file in "Ap bin"
[LG Optimus 2x] Air_Mike:
Thanks, but links are broken.
[LG Optimus 2x] TrymHansen:
Indeed they are, were copied from another post I made, and XDA had truncated them.

1st one: http://xdaforums.com/showthread.php?t=1035041

2nd one: http://xdaforums.com/showthread.php?t=1008070 (this link is also at the bottom of the first post of the first link.)
[LG Optimus 2x] Air_Mike:
Just to report that my USB connection suddenly stared to work again on both of my laptops (home and work).

I didn't do anything after I gave up weeks ago. Before that I've tried everything but with no success.
[LG Optimus 2x] TrymHansen:
Weird. Glad you got it working.

Looking around on different LG Forums, as useless as they are, the support-people always gives the advice that you should take out the battery, and leave it out for five minues to "clear residual memory." (This, apparently, is the solution for any kind of problem with the phone ;-)) That's always sounded completely nuts to me, but that's the advice I'm going to give the next guy with usb problems ;-)
[LG Optimus 2x] arrediabo:
And another one bytes the dust.

That's ultra weird. one minute everything is just fine and on the other, USB is dead. :confused:

So, apart from the procedure TrymHansen gave us a few post back, there is no known solution/diagnose/whatever for this problem, right?

SmartFlash will not detect phone...
[LG Optimus 2x] fmartinezjr:
My post from other thread which was closed:

My optimus 2x is not detected when I plug it to my laptop via USB.

Turn on mass storage" in the phone does not appear, it's like I'm just plugging in into a wall charger.

It could connect just a few days before, same laptop, same drivers (LG mobile united drivers)

Have tried it with 3 different laptops, still can't connect (drivers are installed)

A google search reveals other people having the problem as well and unable to solve it.

Can't return it yet for warranty because superuser app is still there.

Originally, I rooted it using superoneclick. Can't unroot it in superoneclick since not detected in USB.

So i unrooted it using z4root (without a pc). It's now unrooted, however superuser app is still in the app drawer.

i believe mine can be detected from smartflash so maybe i can flash stock rom. will doing this remove superuser.apk?
[LG Optimus 2x] TrymHansen:
Yes it will.
[LG Optimus 2x] michoux:
So did you try to flash a stock rom and did solved your usb problem ?

I will try with a modaco rom next we.
[LG Optimus 2x] blowtje90:
lol, is this fixed or not?

ive had the same problem.. when my rom is totally chrashed, and usb is like stuck?

strange is, all the other usb devices (wifi dongle, not keybord mouse) stops working when i plug in my phone? also the phone does not see that there is an data cable in him so i cant mount my storage?

is this an warranty issue?
[LG Optimus 2x] michoux:
dmesg + logcat.

I have an USB data connection issue too.

USB connection was back twice but after a night -charge with original charger- USB data connection doesn't work anymore.

I have a friend that have an optimus 2x too but with usb connection ok. So I compared logs.

dmesg is the same, we just have on usb plug:

on logcat, when it works:

When it doesn't works I just have:

But not vold log for usb connection detection.

Where can I have more info for kernel and vold logs to see where the problem is ?
[LG Optimus 2x] milosn:
Hi, did anyone had problems with USB on v20l rom's? I have two.

1. When I connect my phone to the PC and connect the USB, when I press back button, USB icon disappears, so I can't disconnect it properly .

2. I have a deskstand for my P990, which has also a slot for additional battery. It has a regular USB cable for charging and data connection for the phone, and another power cable for charging the additional battery. It works with EVERY baseband and ROM combination, except v20l. When I connect my phone, nothing happens, charging starts, but no USB connection. When I plug the USB cable in the phone, everything works fine except the problem No1.

Like I said, these problems only occur with v20l ROM's, stock or cooked.

Any ideas?

Thanks
[LG Optimus 2x] Air_Mike:
I've found interesting when I connect my phone with USB and my phone start charging but without recognition if I go on Settings -> Wireless & networks -> Tethering & portable hotpost for USB tethering it says that USB is connected????
[LG Optimus 2x] michoux:
I have this behavior on Flair and Modaco ROM but on CM I just can tap one time on "Via USB" tethering menu.

A tried vorkkernel too on CM and hidden menu port_setting on Modaco but nothing works
[LG Optimus 2x] michoux:
Log when USB become failed.

Here you have my logcat where you can see different USB connection tests.

Yesterday, after a full charge with stock power supply and turned off the USB connection came back:

* 22h31: 3 several USB plugs with data connection OK

* 06h45: Just my Alarm ;-)

* 08h20: 3 several USB plugs with data connection OK

* 08h20: something strange with secureclockd and RTC change and /dev/drm ioctl with return code 1.

* 09h00: 3 several USB plugs with data connection failed (on vold log with "USB connected" but just "SettingsAppWidgetProvider(1920): Widget is from a previous version... Let's update")

Just hope this logs can progress with this problem...
[LG Optimus 2x] thihaz:
How to go back to stock rom without using USB connection?

I got 2 O2X.

One of the phones which is still android 2.2 had a problem.

The first problem is not recognising the sim card.

After I changed it my sim card, it works again but is not recognised by pc when I plugged in.

I thought it could be because of the rom, i change it to MIUI.

Still not recognised by pc.

How to make USB work again?

And how can I flash stock rom/baseband without using USB?

Any idea? Any help? all are appreciated.

Thank you all.
[LG Optimus 2x] RknDroidFreak:
i had same problem before GB upgrade.

after i connect usb, i had to uncheck the mass storage and check it againg to make usb connection work. once done, it'd work all the time until i shut down the phone.

however, no prob after GB upgrade
[LG Optimus 2x] Air_Mike:
I just updated to stock GB (V20l) through CMW (luckily I rooted my one in short period of time my USB was working) and I hoped it will solve the problem but it didn't :(

Does anyone has any solution yet?
[LG Optimus 2x] Flix123:
The solution is to wait. When I plug in my phone, after 30 seconds it's recognized by the computer.;)
[LG Optimus 2x] krisse5844:
Got the same problems regarding the usb connection ...

Plugged it in and out for 1000 times but it doesn't show me a notification bar ...

It just charges my battery . Used multiple other usb cables .

Phone is running 2.2 android .

Used multiple computers ( running windows 7 x64 ultimate ) . I also reinstalled 1 off them to vista x86 , didn't change anything ...

I found that playing in the hidden menu under port settings,where you can change to ap usb / cpu usb / ... sometimes the phone is recognized again ... Butt when i want to update to 2.3.4 the phone has to restart , and then loses connection again and the update fails ...

Fully formatted internal SD card . Did a full reset ( starting the phone with power button + volume key ) ...

Nothing helps !

What the hell is wrong with it ?
[LG Optimus 2x] kolo2x:
This seems to be an issue only seen on windows PCs. I've never seen this in Linux computers. With that, I'm guessing this is a driver problem
[LG Optimus 2x] michoux:
This problem occures with linux and windows pc. The usb port can works after a fresh reboot and not work anymore after some minutes.
[LG Optimus 2x] krisse5844:
Returned the phone back to the shop ! Hope they will find the problem and fix my phone ...

I'll keep you updated !
[LG Optimus 2x] jaffze:
I got quite the similar problem as you guys. Still nothing works. Here's what I did before and after my problem occurred.

First I rooted with z4root. No problem. Then after a while I discovered that the LG Homescreen app was missing (Used Go Launcher Ex as my default). No problem, didn't need LG's app anyways.

Then I noticed the USB connection between computer and phone didn't work (Win7 64bit), tried on many other computers aswell, same result. Didn't get noticed, only charged like it was plugged in the AC-adapter.

I noticed the problem in October, I think...

Because I really didn't need the USB connection at the time, and the phone was rooted, I didn't bother to send the phone back to the manufacturer right then.

So, later I decided it was about time to send it in for analyzing, so I did an un-root in the z4root-app. I realized a few days later that I had to remove some of the apps I had installed before I could send it in. A hard reset would do the trick, right?

NO

When I did a hard reset, the phone restarted but the Homescreen never showed up. I have a black screen with the drag-down-notification-thing on the top. So now the phone is useless.

With no USB-connection I can't flash it with anything. No ADB, no mass-storage, no nothing.

I've googled a lot but cannot find any information to help me. So when I travel back home next week, I will deliver my phone back to the store and hope for the best.

... unless someone figure out something extraordinary ;)
[LG Optimus 2x] RadioCharlie:
I started having this problem in the last few days. When plugging the phone into the USB port (either direct or on the docking charger) - Device Manager (Win7) says the device "Can't start" Error Code 10. I solved mine by un-plugging the USB cable and re-connected as well as en/disabling the storage mode on the phone. Same thing happens on the laptop although the card reader and microSD slot works fine.

I'm running the latest KANG ROM although it was running for at least a day with USB issues and nothing else added to either PC or phone. Another workaround is to pop-out the microSD card and slip it into the card reader but that kind of defeats the phone being on the USB lead :cool:
[LG Optimus 2x] tzarp990:
i was having the same problem once i had cm7 on p990 and i solved by putting de phone in debugging mode before plugging and.
[LG Optimus 2x] arrediabo:
Has anyone been able to get a real answer to this issue?

And i mean the folks that really has dead USB connections (just charging, no connection whatsoever)
[LG Optimus 2x] lolsen08:
I had the same issues. I need to reflash my phone with nvflash but can´t get USB connectivity (charging works though). Warranty is gone because it´s obvious that I changed the recovery. So I decided to disassemble the phone and switch the USB port (15 $ on e***). It will arrive today - i´ll let you guys know it if helps.
[LG Optimus 2x] dattebayo1897:
Same problem for me.

I would update my bb... I think that un update via OTA on a flashed ROM stock is the only solution... or not.. :eek:
[LG Optimus 2x] bqudamith:
Install LG official drivers. I then connect your device to pc. I after that go to settings - application - development - tick the debbuging (enable debbuging). Then turn on storage device.

Mine works after these few steps

:) I'm working on create a simple plugin for windows. Your feedback is greatly accepted. thanks!
[LG Optimus 2x] tonyp:
Just in case here's the newest driver by LG: http://tonyp.hopto.org/Utilities/LGUnitedMobileDriver_S4981MAN37AP22_ML_WHQL_Ver_3.7.2.exe
[LG Optimus 2x] dattebayo1897:
I followed these steps on my pc where everything works fine some weeks ago.

No good...

I'll try your solution on a new pc, with no LG drivers installed

Thanks mate!
[LG Optimus 2x] dinhluan92:
Please help me.

I'm using LG Optimus 2 x su660.

I'm using android 2.3 and setup cmw 5.0.2.8 after that i flash rom cm10 for my phone.

Afterday, my phone can not connect with my computer

i'm try turn into s/w mode but can't connect...

and i'm turn into apx mode but results =0,

Now i can turn on cmw and flash rom cook

Thank .
[LG Optimus 2x] Geluidsdrager:
Last week, after a couple of days of cleaning and uninstalling and removing old apps and many useless backups of apps that have been updated over the years, my lg p990 suddenly recognized the USB being connected to my pc.The last time it worked was maybe 3 years ago, and I had already given up on it. So I was pleasantly surprised,naturally.

However, yesterday it stopped again. This happened after I had charged my phone from 1% to 14% in the train with a 8000mAh-powerbank that a friend of mine let me use.

The cable was kinda warm when I unplugged it.

I never used any kind of powerbanks before, but I hold it completely responsible for the disappearance of my USB-PC connection.
[HTC Inspire 4G] dc2045:
Ok guys here's the deal:

I had MIUI 1.9.9 v2 up and running for a little while and noticed the new Ace hack kit out. I have no idea what posessed me to run the hack kit on my phone, which is already rooted with s-off, but I did anyway. All seemed well, in my dementia, until I was stuck in a boot loop on the white htc screen.

I accessed the bootloader with volume down + power. It was all good, save for the P98.img being read with an error or some jargon. The kicker is that when I try to access recovery, the phone goes black with an image of a small phone and a red waning triangle in the center.

I have no clue what to do. I've read of crazy recovery operations being done using the ".img" files on other HTC phones, like the EVO 4g, but see nothing of the like in the Inspire forums. What do I do?

I am lost, and I would appreciate some help.Much thanks.
[HTC Inspire 4G] Wolf:
First try pulling the battery out and booting the phone back up after it is back in. You can always go to Attn1's IRC channel to get help. The link is in his signature. Also try to get that PD98IMG file off of your sd card since it may cause you problems later on.
[HTC Inspire 4G] bigdog533:
I had this happen to me....like Wolf said try pulling your battery and also I pulled my sd card and took PD98img of your card and rebooted it help me out.
[Desire HD Q&A, Help & Troubleshooting] Silahsor_66:
I was today instal a rom now can i not anymore in my phone you see only HTC display. I install the stock rom 1.32 zip in my sd card when he is install system says fail uz. i can do notting

HELP me please
[Desire HD Q&A, Help & Troubleshooting] l33ch0r:
First of your english is very bad and I only read out of your post, that you are stuck on bootscreen. If that's the case, than you could just reflash it, might work out.

If that ain't the case, than I don't have any idea.
[Desire HD Q&A, Help & Troubleshooting] Silahsor_66:
sorry for my bad engilish!

I was bussy to day DHD set on my phone i do evry ting s-off visionary was okey and its was rooted. now iam stuck on boot screen notting is working. i set this PD98IMG on my sd card when he install it by system say he fail uz.

i think i earsy evry thing

now what can i do
[Desire HD Q&A, Help & Troubleshooting] Silahsor_66:
i make it its working now
[Galaxy S I9000 Themes and Apps] nieohl:
the one that has scroll lock and pin lock after. i have downloaded the lockbot. but doesn't work. :c
[Galaxy S I9000 Themes and Apps] xpomar:
i had tested the iphone lockscreen in miui it's very cool but i like the controle of music ...ect in miui's lock screen so i had removed that so

http://xdaforums.com/showthread.php?t=1134657 it"s here !! and the lancher of miui's roms is very similar to iphone aussi la config et ts there is another application it's called widget lockscreen she has a veryy very lot of thems of locks
[Galaxy S I9000 Themes and Apps] Mr Woolf:
Widgetlocker and skin mate. Check android themes section for app thread.
[Galaxy S I9000 Themes and Apps] vegetables:
i tried the widgerlocker . but it's not that good
[Galaxy S I9000 Themes and Apps] nieohl:
thanks for the help. but idk how to put em in my phone. i asked already tho. waiting for a reply.
[G2 and Desire Z Q&A, Help & Troubleshooting] rickyiswhite:
What is the best way to unroot? I have to send my phone back for warranty, I'm 16 so ill have to use my moms credit card and ill never hear the end of it if they charge her cause they know my phone is rooted. I need S-ON stock hboot stock radio(if it matters) and stock ROM, I read the guide on the unlocker.com but there's massive amount of comments saying they had problems or it didn't work. Any suggestions?
[G2 and Desire Z Q&A, Help & Troubleshooting] OriginalGabriel:
Check the wiki for the guide to return to stock.
[G2 and Desire Z Q&A, Help & Troubleshooting] Nipqer:
Here is a quick guide for returning to stock.

-Nipqer
[G2 and Desire Z Q&A, Help & Troubleshooting] rickyiswhite:
Thanks so much, when I do it does it matter or would it make more sense if I updated to gingerbread before I send it in?
[G2 and Desire Z Q&A, Help & Troubleshooting] Nipqer:
As long as its a stock rom it shouldn't matter, maybe try find the closest or exact rom it first came with.

-Nipqer