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[Q] Screen On with "USB Device Disconnected"

My Galaxy Tab 7.7 turns on every few minutes and displays a message for a moment in the lower right corner. The message is "USB Device Disconnected".
The device is not connected to any USB device.
This has been happening for many weeks now.
I've tried to turn the USB Debug option on but that didn't change anything.
I have not rooted the device.
I have not flashed the device.
I am running only stock applications from the market.
Does anyone else have this issue?
It's maddening because the device constantly turns itself on. At night I either remove it from my bedroom (the display lights up the room when it comes on) or turn the device upside down on the table so I can't see it when it comes on.

yes, i have the same issue
no idea what the reason is

Same issue.

One Added Note
One item to add...
It appears that if the unit is charging it does not have this problem. This makes logical sense as the USB is connected, albeit to the wall outlet.
I'm going to wait until ICS - which is due here in Thailand at the end of this month. If that doesn't fix it I will contact Samsung.
Living here in Asia makes taking things back for repair very difficult as the many small but authorized vendors aren't set up for this, the language barrier adds heavily to the issue, and finding an English speaking official Samsung office is quite difficult.
I will monitor the forum to see if a fix arrives before my software update.
Thanks everyone!

Same problem here. When this happen for me the mobile network disconnects, I am thinking that it may be some problem with the mobile network card...
When connected to wifi this is not visible although i might get the usb message.
But on 3g i loose all connection sometimes only for a second but sometimes for up to a couple of minutes...
Sent from my XT910 using Tapatalk

Update
I wanted to add some more information...
I happened to remove my carrier's SIM a week ago and the "USB device disconnect" error continues at the same rate.
I guess my next question is how do you contact Samsung support?
Do they have a Tablet support phone number?
I don't care which country the support line is located within, as long as it's English-speaker focused.

bump
very annoying to lose mobile network all the time

I changed Galaxy Tab 7.7 (3G Version) three times, all three tablets had same problem.... any idea to fix it?

I think the problem gets worse if the tablets not been rebooted for a while.
But after reboot I think mine is a bit more stable.
How is it for the rest of you?
---------- Post added at 10:50 PM ---------- Previous post was at 10:49 PM ----------
I also find it weird that you have the same problem with three tablets, but at the same time it seems that very few of us are affected???

I called Samsung and they said they never have complaints on this issue.... anyway, i got three devices from different stores have the same problem.. I think the issue is the rom. That problem hopefully can be solved after ICS upgrade...

Same problem; not so often but it happens once in a while.
I don't know if it is causing the instability that I have noticed with this device but it is kinda weird.

Do you have micro SD card plugged into the device? I read some other forums and some people removed the micro SD card, the issue resolved afterward.
I just removed the micro SD card, I will let you guys know if the issue can be fixed or not soon...
Sent from my GT-P6800 using XDA

Solved
I think all this happens because of Kies software. It's a monster, I will never use it any more. Even uninstlling may not help. Better use MobilEdit instead.
Anyway, I found solution in registry. So, try this:
Before starting, disconnect all usb devices from PC
1. Open Windows registry editor
2. Open key HKEY_LOCAL_MACHINE\SYSTEM\ControlSet002\Enum\USB
3. Press CTRL+F and search in data value your device name (egz. Samsung)
4. Delete all key branches with name started: Vid_*** where your device will be found (You may have to enable permissions first).
Reconnect device. That's all

i have the same 'problem' but..., never used Kies software

Anyway, solution is in the registry. Evidently some usb drivers are conflicting.
Deleting those Vid_*** keys simply resets usb drivers on particular port.
You can check your phone on another computer without driver

Vytookas said:
I think all this happens because of Kies software. It's a monster, I will never use it any more. Even uninstlling may not help. Better use MobilEdit instead.
Anyway, I found solution in registry. So, try this:
Before starting, disconnect all usb devices from PC
1. Open Windows registry editor
2. Open key HKEY_LOCAL_MACHINE\SYSTEM\ControlSet002\Enum\USB
3. Press CTRL+F and search in data value your device name (egz. Samsung)
4. Delete all key branches with name started: Vid_*** where your device will be found (You may have to enable permissions first).
Reconnect device. That's all
Click to expand...
Click to collapse
I don't see how this has anything to do with the problem.
The USB device issue is happening on the tablet, not on the PC. How does removing USB drivers from my PC fix the tablet issue?

omarrabbat said:
I don't see how this has anything to do with the problem.
The USB device issue is happening on the tablet, not on the PC. How does removing USB drivers from my PC fix the tablet issue?
Click to expand...
Click to collapse
Sorry, I didn't notice, that device is disconnected

Same problem with GSM version. Could someone try log at the logs when/after it have happend? Dmesg and logcat. Will also try to do it myself.

same issue here. Never used kies before. I'm not sure if it has something to do with interfering gadgets near the tab.

Strange thing some (or most) people dont notice that bug(?). I tried several 7.7's now and can confirm that this looks like rom issue as every 7.7 has that problem. It really annoys me, escpecially combined with the battery status screen-on bug. When battery is lower than 10% screen turns on like every 2 minutes or so... Good thing to save remaining battery
Oh and I never used Kies too. Didn't even install it yet.

Wont connect to PC and other odd issues

Ok, so I have been having a very annoying issue(s) recently with my SGH-I997R, ( Firmware version 2.3.3, Baseband version I997RUXKG3, Kernel Ver: 2.6.32.7-I997RUXKG3-CL366622)
This all started out of the blue about a month ago, I used to connect my phone to my PC all the time for transferring items via Mass Storage, and then on day when I went to connect it to my same PC, I got " USB Device Not Recognized". It will charge the phone but will not connect or show any option on the phone to connect. I have tried 2 Samsung cables and a generic Micro USB cable, No change. I tried connecting to my laptop, same issue. I re-downloaded the drivers from Samsung onto both my usual PC and Laptop, no change. Very very frustrating.
Other issues, I don't know if their related in any way but they all started at the same time.
a) if I place my phone in airplane mode i cannot get it out of that mode without rebooting my phone
b) if i shut my phone down (doesn't matter if battery shows 100% or 25%) I cannot get the phone to turn on without plugging in the USB cable.
c) When I leave my phone charging overnight and look at it in the morning, battery shows 100% but also shows "NO SERVICE" , I reboot the phone with the cable still connected, service restored.
IF anyone has had these issues Especially the connecting to PC issue, Please PLEASE help. I am going nuts. And of course this all happened 3 months after the warranty expired, so both Rogers and Samsung will not help without $$$$$.

have you tried to back up your data, take out any micro sd card and perform a factory reset under /settings/privacy/reset ?
or open it up and look inside for any problems like corrosion?

qkster said:
have you tried to back up your data, take out any micro sd card and perform a factory reset under /settings/privacy/reset ?
or open it up and look inside for any problems like corrosion?
Click to expand...
Click to collapse
I have done a factory reset numerous times from both the /settings/privacy/reset, and from booting it up holding the volume keys and doing a reset that way.
And I have had my phone since day one in a Ballistic Hard Core Series case, I take it out once a week to ensure its clean and free of dust/moisture (I work in construction so I try to keep it a clean as possible.) and my phone still looks like its brand new.
Thanks for the response though,

Update:
So just as an update for anyone out there who may be able to assist me with this very annoying issue, the Phone is still doing the same things, and since the last post i've also replaced the battery to see if for some strange reason it might help.
But to no avail.
As well I dont think i mentioned that this phone is rooted. I want to try unrooting it to see if that will correct the issue, but with not being able to connect the phone via usb to the computer, I have NO IDEA on how I can accomplish this. Any help???

So many issues...can anyone solve any of them?

I have a LG G2x, got it when it first came out, dont want to buy a new phone really, but this thing is a plague.
the issues didnt matter before because i strictly used it for a very occasional phone call or txt and that was it, but now I'm using it more, and all its problems are too much to deal with. below is a list of issues with details I believe are relevant, if anyone has any suggestion for any of them please share.
Currently running:
Android version 2.3.3
kernal 2.6.32.9
build GR140
software version LG-P999-V21e
Issues:
1. Computer doesnt recognize phone (Can't go into USB Mass storage mode):
-when I plug the phone in, it charges, but no USB signal in the notification bar
-no "enable mass storage mode?",
-turned on/off mass storage mode in settings
-turned on/off usb debugging in settings
-used various (20+) usb cables, no change
-used various (10+) computers, no change
-used various USB ports on each computer, no change
-Installed various versions of LG Drivers and LGs update tool (every version I could find) into my PC
The phone originally went into mass storage mode fine and without trouble. within a few weeks of owning the phone I was given notification of an update and downloaded it, all was fine (I assume this was 2.3.3 from 2.3.2, not sure, wasn't familiar with android back then and didn't know these things). A couple months later I got another notification of a new update and downloaded it. When it was done I couldn't notice any changes, and I believe (its been years) the version stayed the same (2.3.3, LG-P999-V21e) After reading the last few days, it looks like my phone should have been able to upgrade to V21y and I had LG support verify this, but it never did (partially failed update?), using the check for update in my phone yields a never ending "checking server for update", and I'm unable to use the LG update tool because my PC cant recognize my phone.
This stops me from easilly accessing my phones files to share between my pc, plus I cant root or install any other android versions, nor can I even get the latest update for the stock version.
2. Random freezes
From what I can tell the phone stays on but the screen goes out (might be wrong, but I'm sure I heard a phonecall come in once when It did this), the only fix is to pull the battery and put it back in. Supposidly this was fixed in the 2.4.4 update, but I cant get it...so... yea.
3. SMS Messages (sometimes) come in multiple times.
This only recently started in the last 6-8 months, and is occuring with multiple people over multiple networks. Sometimes txting will be completely normal, but other times (random from what I can tell) I'll get the same text 2, 3, 4, 18 times over the course of an hour. It drives me nuts when someone says "sup" to me over and over again for an hour strait. cleared all my messages, cleared cache etc, factory reset, even got a new sim and called tmobile, nothing fixes it.
4. GPS SUCKS:
-cleared data/cache and uninstalled google maps updates
-reset various settings
-gone into hidden menu and altered various settings for the GPS (and set them back to the default ones)
-used various gps testing apps
-added Google to the SLP server list
-tried all combinations of data/wifi/roaming being enabled/disabled
Basically, I recently got data on my phone (never needed it) and tried to use GPS when going somewhere I'd never been to before. The first try googles nav sat there saying "searching for GPS..." and never found me, which I thought was weird because when I open the app it would put me exactly where I'm at, it just would instantly lose me for good. After a few days I realized SOMETIMES it would pick me back up, so I could travel with GPS, it would tell me where to go, lose me, I drive blind for 5-10 minutes, then it'd pick me up again long enough to give me the next turn, or tell me how to get back if I traveled off course.
Unacceptable.
So thats when I started reading and tinkering with settings. I've been able to make it so it -always- finds me within 10 seconds, unless I'm moving. If I'm in a car it will constantly lose me and re-find me (most of the time it can find me within 20-30 seconds, but sometimes it still completely loses me). It's better, but not right, and still only barely useable as a GPS guide for driving. The only fix I've seen that I havent tried yet is editing gps.conf, because I need root access to do so, and I cant do that because of issue #1 and can't find a "one click app/website" that works for my phone and software.
5. Performance in general kind of sucks
-factory reset
My phone was running very, very poorly, but that turned out to be due to 2 years of use, I did a factory reset on it and it sped up significantly, but it still manages to hang really bad in weird ways, maybe I just dont understand how android handles its memory. I can use an app perfectly fine, but if I continue to use it (say for 30+ minutes) my phone will begin to freak out. lock up, not respond, screen shut off, sometimes it even does a "soft restart" as i call it, the screen turns black but not off, then 5-10 minutes later it comes back on and acts like it was shut off completely. Not sure if theres a known performance issue with this phone or if this is just hardware limitation, figured I'd mention it.
==================================
The two issues I really want/need fixed is GPS stability, and mass storage mode. I can even do without mass storage mode, but I really, really want the GPS to work if nothing else.
Thank you in advance for anyone who can help, if I can get this thing to work right I think I'll have a lot of fun tinkering with the android OS.

[Q]PLEASE HELP ME(Cpu, android, apple) reward is possible. TRIED VERYTHING.. :(

Hello, I am seeking advice/help...
I can see by looking and reading some of your writings and posts that yours and others time is worth alot... I am not sure on how much I could spend as I have already lost funds and had my bank accounts hacked. However I will gladly see what I can do if someone can hopfully help me...
I have been without proper internet for well over a month now.. I have changed my wireless routers out twice even added in a AP(hardware firewall)... My internet provider also suppliea optik TV and that is all ran through the same router.
At first I noticed some new programs would appear, things would be moved around some things would go missing... it was very unnoticeable unless you were paying attention.
Then the windows start up acreen would freeze for 5 minutes sometimes almost as if somethinf had froze the screen so that I wouldn't be able to see whats happening(Basically started getting worse - passwords being changed on me etc... - would lose my elevated privledges almost as if I was just a guest account)...
I even tried using CMD in dos to get my permission settings back and at first this would work but then the dos/cmd commands(whoami / ICACLS / and a few other commands would not work and say they don't exist... I also started to notice the size of my harddrive change.. I was never able to get it back to the right amount of GB. I tried to restore it many different methods as well (win7, linux, dos) nothing worked.. I then also noticed the MBR would constantly become corrupt and same with the hard drive.
So I looked into things and figured it must be the bios or cmos.. I tried to flash it and just decided I would start from scratch... However, everytime the computer restarts the old cmos/bios is back. I then also found things saved on (A: , B: and X) ... They were all write protected so I decided to pull the hard drive out. They still showed up even if I had the hard drive removed.
** X: is the boot drive as well so every time I tried to reinstall anything a bunch of extra files would get installed as well**
**Drive B had a volume named RamDrive..**
I ran some system/ tests in dos on the memory and kept getting errors but would not tell me what the problem was I finally figured out that it was a system error because the range went higher(above the 4gb that it's supposed to be)..
Now 4 laptops ruined... I just got a new laptop (win8.1) was never used and had never been turned on and after the initial startup/setup had extra software etc and now is stuck in infiniti boot loop....
Also similar stuff has happend or is happening with fax/printer, pvr, tv, ipad, iPhone, Android, wii, ps3, ps4.. dvd player, basically all media devices and anything wireless..
I have seen lots of evidence on remote connections through IOT, P2P/PHP, IPv4, IPv6, ssl, http(local group/work group) now it seems like things are communicating through a technique called air hopping or coupling. (RF, NFC, WIFI, IR, GPS/GSM, RFID, Altel Bluetooth and a few others). **I can remove the wireless card and laptops still connect**
They even got into a desktop computer that has no wirelsss or bluetooth card... and never gets plugged into the internet. Odd internet type numbers started calling my house phone also my house phone if I unplugged it etc... then powered it back up and didn't set date or time it would reset itself... The play stations would turn on and off them self... I tried reformattibg and missing a huge amount of GB.
Also, money was taken out of bank account as well.... anyone who goes to where this all is happening there cell phones get infected tooo... it seems to update tbe phones in fhe form of a push update aka broadcast signal.. Any help or input would be greatly appreciated...
another thing i noticed was files like index.dat/index.ini... desktop.ini. doubles of everything in my registry... and the fonts i couldnt change or delete... i noticed files from other devices listed on my phones and vice versa for things listed on the computer... if this isnt the right place for this i apolohgize...
also it appears as if my phone is rooted.. judging by the files and folders that are on my phone but it says not rooted. there is apps installed that i didnt put there and cant remove without being rooted.. my phones are constantly connected. factory reset doesnt work anymore... Neither does wipe cache. also constantly streaming data even if data is off and airplane mode. i keep seeng something about a 299-amtel.. redirect in any and all browsers...lots of adware as well.
im not even sure i will be able to ge back on here... if not you can try emailing me [email protected]... i appreciate any and all help.. thank you and sorry for the grammer juat trying to type this as fast as possible.

Your MEANINGLESS title is discouraging people from helping you.
Please at least use a simple sentence to summarize your problem in your title.
Anyway from what you're saying, you should report to the police, or if you have some friend with network and PC knowledge, ask him for help.

8.0 PC Connectivity issue

Currently running stock rooted 8.0 with the most current updates. Searching the web turns up a number of references to this with no real solution, searching here found no references to it at all unless I suck at searching.
I've noticed I have a lot of trouble transferring files to my Pixel from my computer (Windows 8.1). My phone is recognized, but accessing it tends to be very slow, and if you copy anything to it, it tends to stall, often before it even begins to transfer (calculating space required, etc) even with small files. Even just creating a new folder has hung it up before. I've tried different cables, different ports, and no change. Disconnecting and reconnecting the phone will get it working again briefly, but it's not long before the problem returns.
On a whim, I booted in to TWRP, and tried copying files there. First try, everything is immediately recognized, and is transferring at full speed. I just finished a 7.5 GB file transfer with no issue, after transferring a 3.5 GB right before successfully. The good news is this seems to be a viable workaround for now, but it'd be nice to not have to boot into TWRP every time I want to transfer something. Anyone else having this problem or have a solution?