[Bug 88746] Re: ehci_hcd module causes I/O errors in USB 2.0 devices

[Hated On Mostly]

>So, Hated On Mostly, with the patch you posted on ubuntuforums we can
have USB 2.0 transferts in flash drives, but >the CD drive start working
even if you don't use it?

The patch works for me, but not as good as a live CD Ubuntu v8.04.1. It
will pause sometimes during a transfer, but usually the speed recovers
and finishes the transfer. The patch just disables sync mode for USB
devices. Definitely not a perfect fix, but it might get you by. I am
going to use the patch long enough to backup my data and redo my system.
Unreliable USB transfers is unacceptable so I can't run my system in
this state and the patch is not a good fix for a production system.

The problem with the solution I posted is that it was designed to solve
the problem for opensuse versions 9.3-10.0 and thus is several years
old. Yes this bug is several years old and across multiple distributions
(I have seen this problem mentioned for Debian, Mandriva, Fedora,
Suse/Opensuse and a few others I forget) if you check out some of those
links from the ubuntuforums. I think the oldest complaint I saw about
slow/buggy usb transfers is from 2002!

There was another usb bug/ehci bug on here that showed a whole bunch of
problems with each tiny change in the 2.6.24-x series and then the
Ubuntu Kernel Team regressed the changes which broke everything for
2.6.24-19 which is the kernel in the default install of 8.04.1.

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/212660
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/212660/comments/19

It's crazy that USB can be so broken between the smallest updates and it
goes completely unacknowledge by so many developers across
distributions, but that is where we are right now.

My next step is to install 8.04.1, lock the kernel, update it to
intrepid via alternate CD and see what happens. If it breaks then I have
to switch to BSD or Mac OSX depending on whether or not I can get whole
disk encryption setup properly with BSD.

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ehci_hcd module causes I/O errors in USB 2.0 devices
https://bugs.launchpad.net/bugs/88746
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