[ltp] Thermal woes on Thinkpad T60p

Mon, 27 Apr 2009 20:30:22 -0700

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    I had that problem with my T60p immediately out of the factory. The=20
problem turned out to be that the person who put the machine together=20
forgot to take out the protective plastic tape covering that is over the =

thermal paste on the GPU heatsink assembly before screwing the heatsink=20
in place. The first couple of days of using the machine were pretty=20
frustrating with the constant reboots. I didn't bother sending the=20
machine in (I had already waited over 7 weeks to get the laptop; I=20
wasn't about to wait much longer) and so I just cracked the laptop open. =

The problem was fairly obvious once I was on the inside. I peeled the=20
plastic protective sticker off, put everything back together and was=20
back in business. The highest my GPU hit after that was about 85C.

    I've heard of others who claim to have similar issues because the=20
heatsink doesn't make good contact with the GPU, and who have managed to =

solve (or at leat alleviate) the issue by sandwiching a penny between=20
the heatsink and the GPU heat spreader. Your mileage may vary. Google=20
for "T60p penny heatsink" for the thread on thinkpads.com if you're=20
interested to know more and see pictures.

    I hope this helps,

    Nik B.

Peter Lemken wrote:
> Greetings,
>
>
> finally managed to snatch a new T60p at a reasonable price.=20
> Manufactured in 2006 but left in some obscure dealer's stock until=20
> last month I got it with full 3 year on-site service until 2012.
>
>
> Which I have had to use twice now, because the machine runs unstable.=20
> Playing 3d-games in Windows makes the machine freeze hard after 20=20
> minutes or so. Sometimes, somtimes not. When it shut down, it wouldn't =

> start Linux, unable to load the RAM-disk. Leaving it a lone for=20
> 15minutes returns everything back to normal. Sometimes the machine=20
> completely freezes, particularly when I load graphics in gimp or start =

> google earth. However, this has only happened under Ubuntu so far, not =

> under Mnadriva which I run on a separate partition. Tried installing=20
> new radeon drivers from git under Ubuntu, but the problem persisted.
>
>
> Specs: 2,16 GHZ Core Duo T2500, 3GB RAM, 500GB HDD, Mobility FireGL V52=
00
>
>
> At first the tech support replaced the fan (which ran normally, but=20
> what do I know) and I had to open a new ticket 2 hours later when the=20
> problem persisted. Today the tech guy replaced the mainboard - and the =

> problem got worse. Just played a round of Wolfenstein under Linux and=20
> the machine shut down due to a critical temperature reached error with =

> GPU reaching 128=C2=B0. I immediately restarted the machine and read 10=
5=C2=B0=20
> at /proc/acpi/ibm/thermal, so the shutdown was a good idea, probably.
>
>
> The technician will come back some time this week to replace the=20
> touchpad bezel since he screwed up 2 threads upon reassembly. I wonder =

> whether asking him to put fresh heat sink paste onto the GPU makes the =

> real difference or whether I should open a new ticket and ask for a=20
> replacement of the GPU board.
>
>
> What is your experience with a T60p with regard to thermal problems?=20
> My GPU never runs colder than 75=C2=B0 and I can't say whether this is =

> normal or not. The current state of affairs is unacceptable and I=20
> wonder what needs to be done to have a reliable notebook for the next=20
> three years.
>
>

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