T40 with Ipod mini - same problem
Hi all,
I am experiencing the EXACT same problem with my T40, using it with an Ipod Mini. Initially it recongized the ipod OK, but went to USB1.1 speed. Then inexplicably, it would no longer recognize the Ipod and would not charge it. I tried everything - updating the bios, downloading latest Intel chipset support, explicitly deleting & replacing USB drivers, and at one stage I thought it was something the Ipod installed and even editing the registry removing any reference to Ipod. I unistalled & reinstalled ipod software several times, including updates. I also verified it was not the ipod at fault as it synced with my desktop PC's USB2.0 hub without incident.
I found a 'fix' (though not elegant) that may get to the root of the problem. I find that if I DISABLE the Intel 82801DB/DBM USB 2.0 enhanced controller in Windows Device manager, my ipod again syncs, albeit only at 1.1 speeds. But it charges again (whereas with that driver active it did not), and is recognized whereas previously it did not.
I suspect that the USB2.0 hardware is perhaps at fault (and it is switched off by disabling this driver), or the driver is faulty. Am going to set about finding a solution. If the driver is at fault, I have no idea where to find a better one as this is the one released with WinXP SP2. (Microsoft driver version 5.1.2600.0 dated 6/1/2002).
This is an IBM system board problem, not a driver problem
Quote:
Originally Posted by shmookles
So, after getting my system board replaced the problem went away right away. I didn't have to mess with drivers or anything. This is apparently a known IBM problem and it is when dust gets on the system board and allows a circuit to form between to resistors on the board. Call IBM and get them to replace your board, this is the ONLY fix for this problem.
Thank you everyone, particularly Shmookles, for saving me a lot of wasted time and energy (and grief!). I spoke with IBM and gave them the information from this forum. They sent me a replacement system board and an experienced tech came out to replace it. The problem was solved immediately, just as Shmookles experienced. You can try to change drivers and other settings for as long as you want, but it will not fix the problem. the only solution is to replace the system board. Save yourself a lot of wasted effort and make the call. You won't regret it.
T40 USB2.0 Problem, in Summary its a hardware fault
Thanks eveyone, some people put in a lot of work here
1) pleased I'm not totally mad, had already tried most of the solutions here,
2) Gutted its a hardware problem, looks like Its going to take a while to sync my Ipod from now on :-(
Wingnut