USB port/pen strange behaviour...

While trying out my recently bought Mid 2012 Non-retina Macbook Pro, I've discovered an issue with the USB port right next to the SD card slot. When I plug a Toshiba 8gb pendrive, it does not prompt any reaction in the Finder (it does not mount the volume, but is visible from System Report) and also the pen itself does not blink or display its read/write light (while removing it from the port it you can notice a quick flash from said light).
When I try to insert it for a second or third time, and only at the second or third try, it works normally...
Other Pens and External HDs I've tried do not display this behaviour, but both of my, same model, Toshiba pens, do so (I've tried these pens in other Macs and PCs, including a Macbook Pro from late 2011 and there are no hickups to report).
What should I make of this? That it is only a kinky Pen or a weird port?

Anyone?...

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Strange behaviour: two servers on the same port

Hi!
I hope this is the right section for this post. I need help about a strange behaviour involving a ServerSocket.
For my thesis I need to write a program that receives data from a pre-existing DSMS client, filters them and then sends them to a pre-existing DSMS server. And here is my problem: if I try to create a ServerSocket on the same port of the DSMS server, my program throws no exception, and the servers seem running on the same port. This is a behaviour that I'd like to avoid, but I cannot understand what the problem is. Can you help me?
The source code of the DSMS server can be found here (it's written in C++): http://infolab.stanford.edu/stream/code/stream-0.6.0.tar.gz
The source code of my server class, instead, is this one:
import java.io.*;
import java.net.*;
public class ThreadGenerator {
     private ServerSocket server;
     public void connect(String servPort, String cHost, String cPort) {
          try {
               server = new ServerSocket(servPort);
               System.out.println("SERVER running on port "+servPort);
          } catch (BindException e) {
               System.out.println("Address already in use!");
          } catch (Exception e) {
               System.err.println(e);
          try {
               while(true){
                    Socket client = server.accept();
                    StreamThread T = new StreamThread(client, cHost, cPort);
                    T.start();
          } catch (EOFException e) {
               System.out.println("Server closed connection!");
          } catch (Exception e) {
               System.err.println(e);
}I'm programming on Mac OSX Tiger, with Java 1.5.0.
Thanks in advance for your help.

The problem is still happening to me, I tried in this very moment. The code I'm using is the one I posted, and the second server is the one that I linked. I don't think there's anything else to add.
If you're sure that the problem is not in my code, then it means that it is in the linked server, which partially solves the problem. But I'd like to know, if it's possibile, if there is any other way to check if the port is already in use.

Since windows 8.1 usb ports and sound are acting strange

Hello,
Since I upgraded to windows 8.1 my sound randomly stutters(very anoying) and my usb ports get turned off, only the ports that have been occupied since boot, new things work, and not reinsterting the things that were present at boot, in the same or a different
port doesn't work.
Hell, why do we pay for an OS that doesn't even work?
I expect that something as simple as an USB port or sound would work just fine.
I have installed all the latest drivers but somehow windows seems to screw things up.
When I boot up debian, I have no problems at ALL. And did I pay a dime for Debian? No, it is free.
I am getting really depressed here, paying for stuff that doesn't work.
So does anyone know any other way to fix this OS than by breaking the disc and never return to it?
Thanks in advance.

To whom are you telling that, this is an end user forum.
If you have problems than contact Microsoft in your country.
http://www.microsoft.com/worldwide/
Success
Cor

USB Ports, strange bug

Hi, this is the stangest bug i have ever had. When i connect my tablet to the usb port on my Arch laptop the tablet touch screen starts giving false touch and pressing the wrong things.
At first i though it was the tablet fault but this only appends when the laptop is connect to a power source and on my other Windows/Ubuntu computer everything works fine.
Any ideas?

@ziro360
Plug in your laptop to the same outlet as your working computer and try it to rule out house wiring problems.
If it still does it, sounds like your laptop power supply has bad caps. Yes it will break your tablet because something is over heating.
@65kid
The cheap power adaptors put out a square wave, because they are electronic and not magnetic with the coils. It depends on what your device was made to use. Some devices behave better than others.
I had to get a $100 pure sine wave inverter for my laptop in my truck because the $20 dollar piece of junk made the screen scramble bad.
http://en.wikipedia.org/wiki/Sine_wave

USB Ports: erratic behaviour, or is it....?

I have a newly acquired Mac Book Pro, 13", and as you know, only 2 USB ports are furnished with this laptop. I sometimes need to connect to internet via the USB 3G modem I have, but sometimes the computer does not recognize it in one port but does so in the other... Any reason why?

Some people report not being able to use power hungry USB devices in one of the two ports on many Mac laptops. For example some USB powered external drives will not work in one port but will work in the other.
I have heard explanations stating that one port is daisy chained off the other, but I have heard of no explanation from Apple, and not surprised at that.

USB-Hub not working on LEFT USB port?

Hello,
I have installed Windows 7 Ultimate 64 Bit on my MacBook Pro 13" Retina (Early 2013) and it's running fine. Boot Camp version: 5.0.5033.
But I have one problem: I bought an external monitor (Dell U2414H) which has an built-in 4-Port USB 3.0 hub. So I connect the Dell monitor using a DisplayPort 1.2a cable and an USB 3.0 cable. But Windows only recognizes the monitor's built-in USB hub when I plug the USB cable into the right USB port (when I sit in front of the MacBook). Then it works without problems. But when I plug the USB cable into the left USB port of the MacBook Windows only says "USB device not recognized". But other devices like USB sticks and USB drives also work without problems on left and right USB port of the MacBook. Also when I boot in OS 10.9 Mavericks the monitor's USB hub is working on both USB ports of the MacBook. So I think it isn't a hardware failure. I also re-installed Windows, but I have still the same problem.
Do you have any idea, why only the monitor's built-in USB hub is not working in Windows on the left port of the MBP or even how I could fix it?
Is Boot Camp 5.0.5033 the most current version? I checked the box to download the latest Windows support software and also didn't find anything newer than 5.0.5033 to download, but sometimes I read about 5.1.1 - but where could I download it? AND: Doest it help?
Thanks in advance!

I think I've hit a variation on the problem you're enoucntering. I have a late-2013 13-inch Macbook Pro Retina. I've just installed Boot Camp and a copy of Windows 7 Pro. This is my first experience with Boot Camp and Windows on a Mac, so I'm in foreign teritory.
The install all went fine and Windows 7 booted up fine and so far, all hardware seems to be working as expected, with one exception. Things went sideways when I tried use it in "clamshell" mode - lid closed with external monitors and all my peripherals attached to a USB hub. I set up Boot Camp to boot into Windows and attempted to boot. It would give me the usual boot-up fanfair and a then a gray screen for a few seconds, and then it would reboot. It just rebooted over and over. I eventually discovered the issue was the USB hub - without the hub connected , it would boot just fine. Once it was booted into Windows, I could attach the the hub and everything would be recognized normally. Furthermore, I could put the system in sleep mode, wake it up and everything would be working fine. But it simply refuses to boot the USB hub attached. I've stumbled on a couple related threads - see https://discussions.apple.com/message/23802231#23802231. The suggestion is that only certain hubs to not work. I've got two different high quality powered hubs and both display the same behaviour. The other point is, that when booting into OS X with the same hub, it works perfectly. So it's a strange problem.
Note that after reading your post, I did try the hub in both right and left USB ports and that made no difference in my case. I do have one more hub to try (built into my Dell monitor). I'll report back if that happens to work.

One USB port does not work with external Disk or USB key

Hello,
Back to my iMAC there is 3 USB port. The second one - in the middle - does not work pluging an external Disk, an USB key or an iPOD nano. However it works well connecting a Wacom tablet.
Is there an explanation to this behaviour ?
More the keyboard is plugded on USB port 1 and the mouse on the keyboard. Time to time - especially at reboot - I have to unplugged the mouse and plugged again it in order it works.
In advance thank you for your answers
Regards

Since it does not work for three different devices, I will assume it is not something simple like a faulty USB cable. Since it does work for one device, I will also assume that the port is (at least partially) working.
As a test to narrow down the cause, I would try restarting from your Mac OS X installation disc (insert disc and restart with the C key held down).
At the first Installer screen (after language selection), go up the menu bar. Under Utilities, select to run Disk Utility. Now, connect the USB drive into that center port. Does it appear in the Disk Utility sidebar?
Please post back the result...

USB port does not work properly on Tecra M3

I need help with my Tecra M3 USB problems.
It has 2 USB ports. Awhile back the USB ports refused to recognise any non-driver USB memory sticks (I do not have any driver required sticks to try).
Recently I've had to re-install my Siemens ADSL modem, driver etc. which runs via USB cable - LAN connection 2 then WAN miniport. And this is now causing a problem.
1. the Modem LED tells me that it has power (it's a non-powered modem - Siemens C100-1)
2. the link LED holds for about 10 minutes (whilst I'm online) then turns-off (although the properties of the connections tell me that they are still connected)
3. other hardware - printer etc which is powered runs through the USBs OK.
4. the modem seems to be working ok because I can use it with an iBook without problems.
Could this be a USB driver problem? How do I find out? If so how can I fix it?
Thanks

Hi
Thanks for the notes - you're probably right with your suggestions, I've only just read your reply.
In the meantime I didn't have the patience so after much blood, sweat and tears - I re-installed XP.
The support team suggestion I updated my Wireless LAN driver, which seemed a little strange because I have never used any wireless device and didn't mention I ever had a problem with it in my initial problem!!
I'm going to back to a Mac when this Tecra is outdated :)

APEX Listener and EPG - strange behaviour

Hi
For some years, I've used EPG for APEX but have struggled with performance particularly as I can have up to 150 student developers using at any one time.
I do a fair amount of work using ORDImage and have successfully developed APEX applications to upload image files and display full-size and thumbnail images.
After upgrading to APEX 4.1 (from 4.0), I decided to install APEX Listener standalone.
Before I did so I checked that my applications still worked in 4.1 and they did.
However, just installing APEX Listener but not configuring it (yet) has meant that my image display in a report using a procedure based on wpg_docload.download_file( l_ordimage_image.source.localData ) no longer works in EPG - the images are not displayed.
Configuring APEX Listener and running the same application through that DOES display the images.
So this part of the application works under APEX Listener but not under EPG.
My application also allows users to upload images from APEX_APPLICATION_FILES using standard code. Under APEX Listener after uploading, I'm left with a blank page with a wwv_flow.accept URL although the image does indeed upload. Under EPG it works as expected and I get a success confirmation.
So this part of the application works under EPG but not under APEX Listener.
Has anyone else come across different behaviour depending on the mode of connection?
Thanks
Brian
[Oracle EE 11gR2, Windows Server 2008R2, APEX 4.1, APEX Listener 1.1.3]

Hi Brian,
it sounds like you have both EPG and APEX Listener running on the same machine, so your problem might result from a port conflict. Note that both services use TCP port 8080 as default.
At least a port conflict would explain the strange behaviour in your case, some things working on one web server and some on the other.
Some parts of your initial post hint to that direction, e.g.
However, just installing APEX Listener but not configuring it (yet) has meant that my image display in a report using a procedure based on >wpg_docload.download_file( l_ordimage_image.source.localData ) no longer works in EPG - the images are not displayed.... because the APEX Listener only interfere with the EPG if it is at least running on the same machine as your database and furthermore, if it is unconfigured in terms of ist database connection, a port conflict might be the only way it could cause anything like that.
However, if you are sure that's not the issue, please check if you see any error in the APEX Listener's log for the following action you performed:
My application also allows users to upload images from APEX_APPLICATION_FILES using standard code. Under APEX Listener after uploading, I'm left with a blank >page with a wwv_flow.accept URL although the image does indeed uploadIf you actually see just a blank screen, something very bad must have happened and you should see some kind of stack trace there.
For further investigations, if necessary, it would be helpful to know how you deployed or started your APEX Listener and which JDK version you use.
For the moment, I still think the port conflict is my best guess.
You could avoid it by either changing the port for EPG (I'd not recommend that if you have other users still using it) or by changing the port for your APEX Listener.
-Udo

USB ports and Pocket Drive Unrecognized (IQ-775)

Hi all:
With no warning, the two front USB ports stopped functioning (rear ones are OK) and the Pocket Drive is no longer recognized. Worked one day, did not work the next. This happened simultaneously, so I assume it is related as the Pocket Drive is a USB device.
There is power to all of these ports, as when I plug something into them, or insert the pocket drive, the power lights come on, but the system does not show them. The pocket drive no longer shows on the folder tree, and if I remove it and connect it to a working USB port, it reports 'unknown device', tries to load a driver and fails. The Windows message says, "if this continues to occur, replace device" Easy for them to say!! I have used the Disk Manager, but it too cannot find the pocket drive anymore. Interestingly, the Pocket Drive works fine on other computers as a portable drive and is recognized as "HP Pocket Drive", so there is noting wrong with the device.
The pocket drive has disappeared from the Device Manager, and all of the USB ports show are 'working properly', but of course we don't know which are which or even if the front ports are listed as they are not identified
If anyone knows how to repair this problem or has had similar, I would be grateful. My IQ-775 is out of warranty so the repair is on me. I don't know how USB ports 'fail', but I am sure it is a 'fixable' problem.
The machine is steadily destroying itself, just sitting on the desktop. The WLAN adapter went first (on both of my HP machines), then the display drivers, then the Lightscribe, now the USB ports. Planned obsolescence at its finest!
Thanks
DN

Cooper, it's NOT going to be all the devices that are having problems, the OP's issues are related to the USB hub/ports not working properly. Reinstalling drivers for all the USB devices including the Pocket drive that doesn't use any, would be an exercise in futility.
OP, try removing the USB root hubs in question in Device manager and letting the OS put them back on a reboot, that has been known to resolve issues like this, you can also go into the BIOS and do a "reset to default" I know that sounds strange, but it can resolve weird USB issues too.

Why is my iPhone not recognized on my USB port?

When I try to connect my iPhone 3G to my computer absolutley NOTHING happens. No error message no beeping from windows that it detects a connection, and I definitely cannot see it in my iTunes. I have tried restarting the phone, resetting the phone, restarting the computer, restarting the computer with my phone connected, reinstalling iTunes/Quicktime, plugging the cord into different ports on my computer (not my keyboard) and still nothing. I have an external drive with a USB port connection that is recognized when I plug it in the same USB ports. One would think it was the USB cord but the strange thing is I can use the same USB cord plugged into my phone and the adapter in the wall and it charges. I just can't update the software or add songs to my iPhone.
Anybody know what's going on?

Ok so I tried creating a new user account with administrative priviledges on the same computer and still nothing. I called apple tech support and spent about an hour on the phone with them and they are baffled as to why this is happening too. Their only suggestion was to replace the phone. So unless someone else has had this same problem and knows hows to fix it, or just knows of something that apple doesn't, I'm screwed!
Just out of curiosity, I tried connecting my phone to another computer to get the 2.2 update and it worked. So I updated my phone's software and tried plugging it in again and still nothing. Also, I tried connecting someone elses iPhone 3G to my computer with the same USB cord and my computer recognized their phone. So it must just be my phone and my computer don't like each other for some reason!
Here's the full scenario before the connection issue (just in case someone knows something I don't):
I was having problems updating my iTunes to version 8.0.2. It wouldn't fully install quicktime and without quicktime you can't run iTunes, in fact, iTunes won't even open. I got an error message that said I needed to repair or reinstall quicktime. So I completely deleted iTunes and quicktime software from my computer and reinstalled the version that is downloadable from apple's website (which is NOT 8.0.2). I got it loaded and alas iTunes finally opened. So I connected my phone and started updating to the 2.2 version of iPhone software. Then a window popped up saying I needed iTunes version 8.0.2. So I started that download as well. Then I walked away to let it download the updates needed for my phone and iTunes. I came back 20 min later and my computer had restarted itself (I'm assuming after the iTunes update it did that) and was at the login screen. So I logged in and my iPhone would then not connect to my computer after that. I unplugged and plugged it back in and I got a beeping noise but not the normal beeping noise a computer makes when you connect the USB cable. It beeped three times in the same lower tone instead of the 2 beep 2 tone you normally get. I realize in hind site that was probably not a good idea but I asked the apple tech I talked to and he said that shouldn't have been a problem even if the 2.2 iPhone update hadn't fully installed and had been interrupted. So there's my full story! Thanks for helping me out!!

B&W G3 chimes, black screen no boot no power to USB ports.

My precious situation:
I have a B&W g3 that has been upgraded to a 600mhz G4. It has been workin g well for several years now. Yesterday I booted into OS X 10.4.11 and it had a kernel panic. I tried restarting to no avail. Everything powers on, the fans the optical drive and the hddrives. The power button is green but there is no chime and the screen is black. There is no power to the USB ports so I can't use the keyboard to flash PRAM or boot into open firmware. I've tried the CUDA and taking out the battery. Any other suggestions would be appreciated.
Since then:
I couldn't resolve that situation, so I got another one at a local thrift store and swapped in all my pci cards, ram and hdd from the old one. It was working awsome until yesterday. Now the same situation as before. I know what I did wrong this time, but don't know how to resolve it. What happened was I went into start up disk in preferences and chose Mac OS X hdd as start up disk and restarted. Before it was done booting I shut it down with the power button on the front and now this. This time though it does chime when I turn it on. What should I do? I cannot use keyboard commands as there is no power to the USB ports.

Do you have the original bootable Mac OS CD or DVD that came with the machine? I have no experience with the Blue&White G3, but had a beige desktop model a long time ago. Whenever I had some strange boot issues with OS 9 or OS X I was usually able to boot from the original OS 8 CD that shipped with the machine. I could then run disc utility to verify and repair the main internal drive and then try to reboot.
Booting issues are tricky, because you don't really know if you have a hardware or software problem, unless you have another identical working machine and can swap out parts to rule out what you know is good and eventually isolate what is bad. Going back to the original OS on the optical media and the stock machine with no third-party expansion cards is a good baseline configuation to start out from.

"Device connected to USB port has malfunctioned and is not recognized"

When I hooked my nano up to my computer today, the screen went black with a silver apple icon on it...it's still all lite up and on...but it won't change from that screen.
And my computer says, "Device connected to USB port has malfunctioned and is not recognized", so it won't show up in iTunes.
What do I do?? Thanks.
Windows

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L550/010 USB port not working properly, non-standard USB ports

I wondering if anyone can shed some light on this strange problem I'm having with my laptop USB ports.
Background.
I have a USB device (CED-M2 USB Chronograph). The device comes with Windows 7 software to upload fps readings.
The CED has a calculator style keyboard - so you can lookup data without the laptop.
My L550 PSLWSA-01000Q, is running Windows 7 professional.
Problem.
When I connect the CED into the USB port the buttons on the CED no longer operate, As soon as the USB lead is disconnected the buttons work. Uploading the data doesn't work either. The buttons freeze occurs as soon as I plug into a powered USB port (even if user not logged into Windows and programs are not running).
I've installed the upload program onto two PC's at home (Vista Home and Windows 7 Home) and both PC's connect to the CED and upload fine. Furthermore, the CED push buttons works perfectly! So, this leads me to think that the hardware or signals from the laptop USB ports is not standard.
I've tried all three laptop ports (e-Sata/USB and normal USB ports), same problem.
Any ideas what could be causing this problem?

Hi Jerry
Firstly, thanks for repsonding.
All L550/010 USB ports appear to work well on other devices (Sierra Wirless card, HP optical mouse, HTC phone), doesn't matter which port (USB, Esata/USB) all works fine with these units.
I've tried connecting the Chrono via a USB 4 port expander - same problem, no comms, chrono buttons locks up. Connect to Home PC running Vista Home and Windows 7 Home and works fine 9 - just can't take those to the range.
The Chrono unit is self powered (9V Alkaline) and it's new, so USB supplied 5V is not a problem.
The buttons seize whenever the laptop is powered up. Also, if the chono unit is powered down, connecting the USB lead to the laptop turns it on (wakes up). This wake up functions on both home desktop PC's and laptop (good), however, with the laptop I can't power down the Chrono as the buttons don't work.
Whilst laptop connected, and rebooting the Laptop, the Chrono buttons will work just before the Press F2 for setup screen comes up - so could it be electrical.
I've downloaded the latest BIOS from Toshiba and Intel chipset too - no change.
I got the unit to connect once tonight - when I plugged my mouse in at the same time - USB configured for mouse, and whilst doing that the Chrono worked. Once mouse working, Chrono stopped. Can't repeat results.

USB ports going loose.......

Hi,
I have a 2 months old USB modem which i use to connect to internet. I have an HP netbook(1 month old) and a Samsung laptop(2 months old) on which i use the USB modem.
Now this USB modem Huawei EC150 has an issue, it fits a bit tightely in the USB ports and takes a little extra effort to plug it in. After two months of usage it has loosened up the USB ports on both of my new laptops. Now the USB modem plugs in easily on both the machines but the ports have become bit too loose for other devices.
Now i am wondering if this will eventually cause the USB ports to become too loose and cause other devices to dangle too much and cause loose connections to the computer.
As of now this is not too much of an issue cause i have not had loose connections with other devices except for an old pen drive.
If this can be an issue in future, is there an easy way to fix this? Or will i have to just visit the service centres to get the ports replaced. I read on some forum that we can bend the small clips or notches (whatever you would call them) inside the USB connectors on laptops to make them tighter again. Maybe i am just bothering too much about my new laptops.
I suppose its the USB modem that is the culprit here, have never had such an issue with any USB device on my old desktop that i don't have with me now..
Please help...........

I think its the whole socket, connector looks fine and connect well but i can move it up-down and left-right about 3mm
Edit: went to the retailer and tried a new controller, same *problem*

USB port/pen strange behaviour...

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