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HUAWEI E220 HSDPA USB Modem random disconect

I have a HUAWEI E220 HSDPA USB modem and I use the Mobile Partner application to monitor the connection. The problem I experience is that the usb port randomly resets and disconnects the modem.  There are no error messages its the same as if I unplugged the device and then reconnect it. Why will a USB post randomly reset a device connected on it? could it be a bug in the driver software? It worked fine for a long while now but it looks like the problem increases as time goes on.  

Operating System: windows XP service pack 2
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Chipkin_com
Asked:
Chipkin_com
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1 Solution
 
tarcisCommented:
Did you try a diferent USB port ? Maybe its a problem in your USB. I have seen problems with USB when the Power Supply is old and therefore not sending enough power to the USB. Do you have a spare one PSU?  You can also try a spare USB CARD to plug it in.
If your modem has worked fine before, its most likely NOT a driver problem.
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Chipkin_comAuthor Commented:
Hi
I only have 3 USB ports on my gigabyte W511A Laptop. I tried all of them and got the same symptoms. One possible solution could then be to get an external USB hub that uses its own power source. Are power one of  the main reasons for a computer to reset a USB port? Could it also be data buffer overload or some other error that can cause the USB port to reset or disconnect?
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tarcisCommented:
Actually it could be both the modem or the laptop usb controller problem.
Do you have this problem with another USB device ? Like a pendrive or a usb mouse ?
Did you try another USB CABLE ? (the wire that connects the modem to the laptop)
If there was a buffer overload, the modem would just stop working but I cant see how it would "unplug" and "plugin" again. It sounds more like a physical problem.
But if you can uninstall the driver and modem aplication and reinstall it, we could be more certain.
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Chipkin_comAuthor Commented:
I do use a usb mouse as well on the USB port next to the one used for the modem. But I dont have problems with the USB mouse and if the USB mouse is present or not the modem still randomly disconnects. I have two usb cables for the modem one normal one and one that connect to two usb ports for extra power when that signal is low. I used both but is still randomly disconnects.

I also uninstalled the modem drivers just to make sure but it still have the same symptoms. I also used the modem without the Mobile Partner app by just manually dialing the modem from my modem connections but that also didnt solve the problem.

It really seems like a physical problem because it gives me the same message if I unplug the modem from the USB port. It is very strange. I dont know if the service provider can cause the device to disconnect? The strange thing is that for a hole moth it only did it maybe one now it happens mush more often.
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Chipkin_comAuthor Commented:
I do use a usb mouse as well on the usb port next to the one used for the modem. But I dont have problems with the usb mouse and if the usb mouse is present or not the modem still randomly disconnects. I have two usb cables for the modem one normal one and one that connect to two usb ports for extra power when that signal is low. I used both but is still randomly disconnects.

I also uninstalled the modem drivers just to make sure but it still have the same symptoms. I also used the modem without the Mobile Partner app by just manually dialing the modem from my modem connections but that also didnt solve the problem.

It really seems like a physical problem because it gives me the same message if I unplug the modem from the USB port. It is very strange. I dont know if the service provider can cause the device to disconnect? The strange thing is that for a hole moth it only did it maybe one now it happens mush more often.
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tarcisCommented:
Did you try newer drivers ? (youre using the ones from the CD that came with it right ?)
Neither the ISP (Internet Service Provider) or the connection it self can "unplug" the device, the most it could do is simply disconnect the connection.
This only leaves us 2 options.
Either there is a problem with the modem itself, or with you notebook usb power (i doubt it)
If you can, another test that you can do, is use that modem on another machine, if it "unplugs" the modem is mal functioning.
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Chipkin_comAuthor Commented:
You were right about the firmware. I uploaded the new firmware that my ISP supplies for this modem and now the modem is stable and does not reset anymore. Thanks
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tarcisCommented:
Im glad I could help, took a while, but much better then getting a new one!
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