[Expired for linux (Ubuntu) because there has been no activity for 60
days.]
** Changed in: linux (Ubuntu)
Status: Incomplete => Expired
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https://bugs.launchpad.net/bugs/630399
Title:
Issue when using USB mass storage devices with EHCI enabled
Status in “linux” package in Ubuntu:
Expired
Bug description:
When I attach any USB mass storage device (external HDD or flash
drive) it is either not mounted at all or it disappears during file
transfer as long as it is running in USB 2.0 mode with EHCI.
Disabling USB 2.0 – support in BIOS slows transfer rates down considerably
but it gets stable and did not fail yet.
My 3 flash drive and 2 USB – HDDs run fine on an other computer also set up
with the same releases of Ubuntu.
Using Windows on this computer, USB runs fine at USB 2.0 rates => hardware
damage can't be the problem.
Adding an USB 2.0 controller card per PCI – interface, these USB 2.0 – ports
provide full EHCI support and good transfer rates.
Seems to be related to the USB – controller used in this machine.
I'm seeing this issue with Ubuntu 10.04 current updates (2010-09-04)
as well as the beta release of Ubuntu 10.10; last booted by iso – file
from hard disk.
Output of dmesg, lspci, lsusb, lsb_release and uname while running
Ubuntu 10.10 beta are included as zip – file attached to this bug
report.
When can be done to solve this issue? Let me know what I can do or
what additional information should be provided by me.
Thank you! lisajo
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