T3 Intermittent USB sync problem

Archived from groups: comp.sys.palmtops.pilot (More info?)

In article <1107022908.823256.291690@z14g2000cwz.googlegroups.com>,
"hillwalker" <sven.howarth@tiscali.co.uk> wrote:

> I am having a strange connectivity problem syncing a new Tungsten T3
> via USB cradle.
>
> It works fine for a while; then suddenly the PC stops recognising the
> handheld when attempting the sync. The palm just sits there saying
> 'Connnecting with the desktop using Cradle/Cable', and after a while
> times out and says 'A connection between your handheld computer and the
> desktop could not be established...'.
>
> Nothing at all happens on the PC. Needless to say, Hotsync manager is
> still running, has Local USB enabled, etc.
>
> Here is the stange thing:
>
> Unplugging the cradle and connecting to another USB port fixes the
> problem. For a while. Then the same thing happens again, and switching
> back to the original port works again. It is as if the PC forgets that
> the USB port exists or has anything plugged into it, until reminded
> again! Unplugging and plugging back into the same port does NOT fix the
> problem.

I'm seeing something similar with my T3, but I'm using it with an iMac.
Resetting the T3 clears up the problem (haven't tried moving to a
different USB port, but will next time it happens). This just started
recently. It sounds like the same problem, but obviously if it is it's
on the Palm, not the computer.

[]
--
Kevin Michael Vail | a billion stars go spinning through the night,
kevin@vaildc.net | blazing high above your head.
. . . . . . . . . | But _in_ you is the presence that
. . . . . . . . | will be, when all the stars are dead.
. . . . . . . . . | (Rainer Maria Rilke)

Archived from groups: comp.sys.palmtops.pilot (More info?)

hillwalker napsal(a):
> I am having a strange connectivity problem syncing a new Tungsten T3
> via USB cradle.
>
> It works fine for a while; then suddenly the PC stops recognising the
(...)
> symptoms (switching port fixing the problem) seem to suggest the
> problem is at the PC end!
>
> Both PCs are running Windows XP; one is Hotsync Manager 4.0 / Desktop
> 4.1.2 (as shipped); the other is 4.1.4 (latest available at palm.com).
> Any ideas?
>

Try switching power scheme (you'll get there through ScreenSaver control
panel) to Always On. Looks like the system turns the USB off after a
while of no communication to conserve energy.
Mark

Archived from groups: comp.sys.palmtops.pilot (More info?)

Final follow up:

Changing the system power scheme did not seem to help, nor installing
Palm Desktop 4.1.4.

However the power saving idea seems to have been on the right lines,
and I think the problem is now fixed.

I had to open the Device Manager (right click on My Computer -> System
Properties -> Hardware); open Universal Serial Bus Controllers; double
click USB Root Hub; Power Management tab; uncheck 'Allow the computer
to turn off this device to save power'.
Thanks for the various suggestions!