BitmapCake!

I had this problem with Ubuntu for a long time and I've been looking for a solution that works. After trying out many different things, I finally found something that really worked and I thought I should share it in my blog for my future reference as well as a help for those who looking for it.

If your running a x64 bit Ubuntu or other Linux and find USB transfers hang at the end apply this fix:

echo $((16*1024*1024)) > /proc/sys/vm/dirty_background_bytes
echo $((48*1024*1024)) > /proc/sys/vm/dirty_bytes

I suggest you edit your /etc/rc.local file to make this change persistant across reboots.

sudo nano /etc/rc.local

Go to the bottom of the file and leave a space then paste in those two lines.

Save the file with ctrl + x then press y.

To revert the changes enter this in console and remove the lines in /etc/rc.local

echo 0 > /proc/sys/vm/dirty_background_bytes
echo 0 > /proc/sys/vm/dirty_bytes

More info and references: https://unix.stackexchange.com/questions/107703/why-is-my-pc-freezing-while-im-copying-a-file-to-a-pendrive/107722#107722


Source: https://gist.github.com/2E0PGS/f63544f8abe69acc5caaa54f56efe52f

I directly copied it from the above github gist.

Honestly I don't have any idea about the properties which are set above, and I didn't even do any research on them. However it seems working and shows the real copying progess, and doesn't hang at the end of the copying.