[ltp] Weird CPU fan problem on T400, any help appreciated.
Mark Altern
linux-thinkpad@linux-thinkpad.org
Sun, 18 Jul 2010 08:15:13 -0500
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hey, now I installed the ubuntu 2.6.32-24 pre-proposed linux kernel. The fan
operates as expected for the last evening. But let me do more testing. I
will report back.
A lot of thanks to all of you guys.
On Sun, Jul 18, 2010 at 5:54 AM, Daniel Skorka <skorka@gmx.net> wrote:
> On Fri, 16 Jul 2010 21:55:23 -0500
> Mark Altern <mark.altern@gmail.com> wrote:
>
> > Now after I did a clean install of 10.04, I found the BIOS doesn't do
> > it correctly: since the start-up cpu fan speed is about 1886rmp
> > (normal), when the cpu temp goes to 55c, it cramp up to 2700rmp, then
> > after that even the cpu have been idle for a long while and temp drop
> > to 37c, the fan wouldn't slow down, but keep running at that high
> > speed.
>
> This is just a shot in the dark, since I don't know this series.
> On some older Thinkpads, like my T43, the CPU fan would also keep
> running even though the CPU wasn't really hot, and the culprit seems to
> be anpther part that gets hot and is supposed to be cooled by the same
> fan. Of course, that doesn't really explain why it only started to
> happen now.
>
> Daniel
> --
> The linux-thinkpad mailing list home page is at:
> http://mailman.linux-thinkpad.org/mailman/listinfo/linux-thinkpad
>
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hey, now I installed the ubuntu 2.6.32-24 pre-proposed linux kernel. The fa=
n operates as expected for the last evening. But let me do more testing. I =
will report back. <br><br>A lot of thanks to all of you guys. <br><br><div =
class=3D"gmail_quote">
On Sun, Jul 18, 2010 at 5:54 AM, Daniel Skorka <span dir=3D"ltr"><<a hre=
f=3D"mailto:skorka@gmx.net">skorka@gmx.net</a>></span> wrote:<br><blockq=
uote class=3D"gmail_quote" style=3D"margin: 0pt 0pt 0pt 0.8ex; border-left:=
1px solid rgb(204, 204, 204); padding-left: 1ex;">
On Fri, 16 Jul 2010 21:55:23 -0500<br>
<div class=3D"im">Mark Altern <<a href=3D"mailto:mark.altern@gmail.com">=
mark.altern@gmail.com</a>> wrote:<br>
<br>
</div><div class=3D"im">> Now after I did a clean install of 10.04, I fo=
und the BIOS doesn't do<br>
> it correctly: since the start-up cpu fan speed is about 1886rmp<br>
> (normal), when the cpu temp goes to 55c, it cramp up to 2700rmp, then<=
br>
> after that even the cpu have been idle for a long while and temp drop<=
br>
> to 37c, the fan wouldn't slow down, but keep running at that high<=
br>
> speed.<br>
<br>
</div>This is just a shot in the dark, since I don't know this series.<=
br>
On some older Thinkpads, like my T43, the CPU fan would also keep<br>
running even though the CPU wasn't really hot, and the culprit seems to=
<br>
be anpther part that gets hot and is supposed to be cooled by the same<br>
fan. Of course, that doesn't really explain why it only started to<br>
happen now.<br>
<font color=3D"#888888"><br>
Daniel<br>
</font><div><div></div><div class=3D"h5">--<br>
The linux-thinkpad mailing list home page is at:<br>
<a href=3D"http://mailman.linux-thinkpad.org/mailman/listinfo/linux-thinkpa=
d" target=3D"_blank">http://mailman.linux-thinkpad.org/mailman/listinfo/lin=
ux-thinkpad</a><br>
</div></div></blockquote></div><br>
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