Am 12.12.2011 22:20, schrieb [email protected]:
That sounds like a SouthBridge chip going south, pretty much all the
symptoms are there.
The symptoms for a fried / defect southbridge are afaik "unable to
enumerate usb device" and not "over-current detected" messages and in
addendum usb2 devices just working with ehci disabled in usb 1.1 mode
but here all usb2 hardware works on all ports (which puzzles me a bit).
And apart from that, fried / damaged southbridge on a T43 is somewhat
unlikely (but not impossible for sure) as only T40 - T42 were reported
to be affected in numbers.
Your options are to have it professionally re-balled (no-reflowing of
SouthBridge, unlike GPU) or have motherboard replaced.
As said, I doubt it is the southbridge but for sure would a complete
replacement of the mainboard solve the problem... at least most likely
as it could be the case causing a short-circuit somewhere. ;)
Good luck.
Thanks, I hope others may suggest other possible fixes, or point out
where to have a look at the mainboard.
Cheers,
George
regards
Michael
-----Original Message-----
From: Michael Schmitt <[email protected]>
To: thinkpad <[email protected]>
Sent: Mon, Dec 12, 2011 10:46 am
Subject: [Thinkpad] T43 2668 (266884G): hub 2-0:1.0: over-current
condition on port 2
Hi list.
I have a T43 2668, the 15"/1400x1050 thing, running Debian GNU/Linux
sid. It works in general, but battery live is not as good as it should
be (around 2h with a "almost like new" battery). I guess the messages like
hub 2-0:1.0: over-current condition on port 2
"spamming" my syslog may be the reason, most definitely a hardware
issue. If memory serves right the message is / was not limited to port
2. Iirc port 1 messages were there too at one point or the other.
I do get occasional hardlockups / kernel oopses every once in a while, I
guess depending on the kernel version that varies from kerneloopses to
screen-freezes with a nasty beep sound playing until powered down the
hard way. I do not see the issue often known as the "flexing-issue" here
as: 1.) has never been reported for a T43 2.) no screen flickering /
errors.
I think the T43 did work without lockups for several months and the
lockups did happen later, but the "usb over current" message were there
all the time. As this is not my only laptop, I did not bother much and
just took another one for work. But now as another ThinkPad did fail me
(see the next mail) after a hard 1,50m fall, I guess I have to stop
breaking ThinkPads and trying to fix em again! ;)
So for this little black beauty, any suggestions where to look for
short-circuits / wrong wiring / broken connectors / whatever? I have
never disassembled a thinkpad entirely (at least I had never the
mainboard of one in my hand), but I did some minor hardware maintenance
in the past and with the maintenance manual provided by IBM/Lenovo, I am
confident to be able have a look at every inch of the inner guts of it
if necessary.
Any help / suggestions is greatly appreciated!
regards
Michae
P.S.: wrong e-mail account used the first time...
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