There are lots of reports of this bug in various iterations. Please also
see bugs # 88746, 490112, 541937 and 599755. They all seem to exhibit
the same behavior.
I'm currently using Lucid 64-bit. I'm going to copy and paste a post
from the System76 support forums on what I've done to troubleshoot this:
It was reported that running the following commands in a terminal would solve
this problem in past releases of Ubuntu:
sudo modprobe -r ehci_hcd
sudo modprobe ehci_hcd
However, this is not an option any longer as this module is now part of
the kernel and can't be reloaded this way.
Changing the kernel from CFQ to Anticipatory Scheduling at the GRUB
prompt doesn't seem to have any affect, though other users have reported
some success with this method.
* The 32-bit version of Lucid doesn't demonstrate this problem, either
through a live cd environment or installed to the internal hard drive. Speed
stays consistent, but does not seem to exceed 12 Mbps.
* Puppy Linux 4.3.1 doesn't seem to demonstrate this problem, though
because of the lack of a progress bar for the copy operation, I can't give
exact speeds. I would guess that it is operating at 12 Mbps like the 32-bit
version of Lucid as it seemed to take about the same amount of time to transfer
a large file.
* Fedora 13 64-bit (live cd) demonstrates this problem
* A live cd for 64-bit Lucid bit also demonstrates this problem
* Linux Mint 9 64-bit live cd also had this problem
* Lucid Puppy 5.0.1 live cd did not have this problem, though I think this
is a 32-bit distro, and was as fast as the live Windows cd
* A live Windows cd does not demonstrate this problem.
Please let me know what other information I can provide to help with
this.
--
File transfers to USB devices constantly SLOWS down on large files > 200MB!
https://bugs.launchpad.net/bugs/582390
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
--
ubuntu-bugs mailing list
ubuntu-bugs@lists.ubuntu.com
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
