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My Android connection to my computer is ridiculously slow. Just previous to this, I used Banshee to transfer some songs to my Android, and it took nearly two hours two transfer 23 songs. (The problem is not limited to Banshee, but any file transfer.)

I thought this might be a problem on the Ubuntu side of things, but I'm starting to think that the problem is either limited to, or more pronounced with, my Android device.

While I was doing variouos tests to try and diagnose the problem, by adding and removing various USB devices on my system and then testing file transfers, I saw speeds of up to 2MB/second, which I could live with.

However, no matter what I did, and regardless of what speed I have been able to achieve, after some amount of time, the problem returns. The speed becomes something more like 50KB/s or less.

Two hours to transfer 23 songs is practically unusuable.

Assuming for a moment that maybe my Ubuntu machine is not the problem, how can I determine if my Android phone is doing something to hold up the USB transfer speed?

Samsung Galaxy S2, Model number GT-I9100, Android version 4.0.4, Kernel version 3.0.34-Siyah-v3.3.2, Cyanogen 9-20120624.

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As this isn't a solution but a workaround I won't post it as an answer: you can transfer files wirelessly instead if you're on the same network using Airdroid –  bigbadonk420 Jul 28 '12 at 13:24
You're running an outdated build/kernel, could you install the latest RC or nightly? There are now more recent CM9 builds you could try, e.g. RC2 or a nightly here. Just to check if this alone fixes your problem. PS: It's definitely kernel related (either Ubuntu's or Android's kernel) –  ce4 Jul 28 '12 at 15:50
Are you transferring to the internal memory, or the MicroSD. What spec is the MicroSD? If MicroSD then do you have a card reader that can accept it? –  w3d Jul 29 '12 at 23:01
@w3d The problem seems to be with both the internal memory and the MicroSD. I do not have a separate card reader for the microSD. The MicroSD is a 16GB class 4 card made by Sandisk. –  Questioner Jul 29 '12 at 23:21
@ce4: I updated the kernel and the ROM, and now my GPS doesn't work. So I guess I'm back to playing feature-whack-a-mole. –  Questioner Aug 2 '12 at 13:08

2 Answers 2

I too was having this problem, However after turning on the "USB debugging" in mobile, transfer speed increased to >10 MBPS. Also important is to find where this device is connected to the computer USB2 or 1 . Use lsusb -v then go to your device and look for value in bcdUSB field. Should be either 2.00 or 1.01

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This is a common problem with Android and Ubuntu. I got around this by using ADB to transfer the data.

Turn ADB on in your phones settings and make sure you have downloaded the ADB package on your computer (http://www.webupd8.org/2012/08/install-adb-and-fastboot-android-tools.html). Then run in terminal:

adb devices

to check that your device is recognized. Once you have done that you can transfer files using:

adb pull /sdcard/place_on_phone ~/place_on_computer


adb push ~/place_on_computer /sdcard/place_on_phone

This is a bit of a self plug but I did make a small shell script that does this automatically at: http://opensynx.codeplex.com/wikipage?title=Linux

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