[ltp] Brightness and Suspend on T61 6459-CTO

[John Jason Jordan]

On Tue, 6 Nov 2007 10:44:22 -0500
Mike Kershaw <dragorn@kismetwireless.net> dijo:

> I still haven't solved the problem where the external USB ports don't
> resume properly but the internal USB system (fingerprint and bluetooth)
> does, if anyone has any thoughts on that one (usbcore suspend doesn't
> seem to affect it, nor does unloading or not unloading the modules, and
> it seems to happen from at least 2.6.22 through 2.6.24rc1-wireless-git)

I'm just a desktop user and I know little of how these things work,
plus I'm still pretty new to Linux. But I have noticed a problem with
my T61 that did not happen with my old computer running Feisty and the
problem may be related to this issue.

I use a Logitech external wireless notebook mouse that has a small USB
receiver (about the size of a thumb drive). My old computer with Feisty
had three USB ports and I could hot-swap the receiver into any of the
ports and the mouse continued working without a problem. On my new T61
with a fresh install of Gutsy amd64 I usually put the receiver in the
bottom USB port on the back right corner. But if I move it from that
port (e.g., to the port in the middle of the left side) it will
continue to work in the new port, but won't work if I later move it
back to either of the ports on the back right corner. From that point
it will only work in the port in the middle of the left side until I
reboot. In fact, those two ports are completely dead until I reboot -
for example, they don't work with my thumb drive either.

This seems really strange to me. Evidently the port on the left side is
wired differently from the two on the back right corner. I'd like to
know what is going on and if there is a way I could force those two
ports to "reboot" themselves.

The kernel I'm using is:

Linux Devil7 2.6.22-14-generic #1 SMP Sun Oct 14 21:45:15 GMT 2007
x86_64 GNU/Linux

Thanks in advance for any suggestions.