[svlug] USB with ubuntu 10.04 on thinkpad t41?
marco at sonic.net
Tue Oct 5 07:23:40 PDT 2010
On Tuesday 05 October 2010 02:39, Larry Colen wrote:
> I recently upgraded to ubuntu 10.04 on my Thinkpad t41to start developing
> droid applications. Upgrading from 8.10 meant wiping out everything that
> was on my drive and installing 10.04.
> The problem that I'm running into is that my machine won't mount USB
> drives, including the droid. That isn't quite true, because it seems that
> sometimes, after the droid has been connected via USB for a while, it will
> eventually start talking to the T41.
I found a very similar problem on a T40p. After a lot of searching on the net,
I found some references claiming the USB hub/adapter chip is about to go bad.
I found that a powered USB 1 (ONE - old/slow!) hub seems to help. With it, my
T40p connects OK to an AT&T 3G dongle and different thumbdrives. Those are
the only devices I'm interested in on that laptop.
> Mind you, with ubuntu 10.04 on my desktop machine, I don't seem to have any
> of these problems.
> I've gone into System Settings->Advanced User Settings->Removable devices
> and unchecked the "Only automatically mount removable media that has been
> manually mounted before" setting.
> When I do a dmesg I get
> unable to enumerate USB device on port 3 (or port 4)
> I've tried with both gnome and KDE desktops.
> dmesg is also giving me "new high speed USB device using ehci_hcd and
> address xxx" message where xxx is an increasing number.
You might also be able to block/ban the usb_ehci (?) module, forcing the
kernel to slow USB-1 . But for some reason, I was not so successful and I
needed more ports anyhow. I just had to make sure, I used the `correct' USB
hub with this box;-)
Hope this helps,
> This happens with both SD cards and my droid.
> Has anyone else had, and solved, a similar problem?
> Larry Colen lrc at red4est.com sent from i4est
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