Re: [Bugme-new] [Bug 12994] New: Thinkpad R51e is overheating even when idle

Re: [Bugme-new] [Bug 12994] New: Thinkpad R51e is overheating even when idle

[Andrew Morton]

(switched to email.  Please respond via emailed reply-to-all, not via the
bugzilla web interface).

On Wed, 1 Apr 2009 09:51:15 GMT
bugzilla-daemon@bugzilla.kernel.org wrote:

> http://bugzilla.kernel.org/show_bug.cgi?id=12994
> 
>            Summary: Thinkpad R51e is overheating even when idle
>            Product: Power Management
>            Version: 2.5
>     Kernel Version: 2.6.28,2.6.29
>           Platform: All
>         OS/Version: Linux
>               Tree: Mainline
>             Status: NEW
>           Severity: normal
>           Priority: P1
>          Component: Other
>         AssignedTo: power-management_other@kernel-bugs.osdl.org
>         ReportedBy: uzytkownik2@gmail.com
>         Regression: No
> 
> 
> Thinkpad R51e is overheating very much even when idle except when run on 128
> MHz (please see also bug #12826). AFAIR it is not preset on Windows and some
> earielr version of Linux (both I'll check out today).
> 
> The only way of preventing this to happen is to set by thinkpad_acpi fan
> controll to full-speed (i.e. removing the safety settings).
> 

Could someone please recategorize this report appropriately?

(oh, and fixing it would be nice too :))

Re: [Bugme-new] [Bug 12994] New: Thinkpad R51e is overheating even when idle

[Henrique de Moraes Holschuh]

On Wed, 01 Apr 2009 12:47 -0700, "Andrew Morton" <akpm@linux-foundation.org> wrote:
> (switched to email.  Please respond via emailed reply-to-all, not via the
> bugzilla web interface).

You do that, I lose track of things.  So I am going to reply in the bugzilla
interface.  Sorry about that.

Maybe someday we could have a proper bug tracker setup that lets one deal
with the bug reports over email...  adding magic hidden approval headers to
keep random spam at bay is trivial.

Executive summary: AFAIK, that thinkpad might be having hardware problems.
IBM Thinkpads are supposed to operate at full number-crunching mode at full
speed at any decent ambient temperature (in my experience, the T4x will deal with
full load at <35°C ambient temps for long periods of time just fine, but they
will be quite hot inside (CPU around 75°C, likewise the GPU, rest of the system
approaching 60°C).

Thermal sink problems are common on IBM thinkpads, and are easy to fix if you
can deal with taking it apart, cleaning things up, and applying a new thermal
compound.

-- 
  "One disk to rule them all, One disk to find them. One disk to bring
  them all and in the darkness grind them. In the Land of Redmond
  where the shadows lie." -- The Silicon Valley Tarot
  Henrique Holschuh

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Re: [Bugme-new] [Bug 12994] New: Thinkpad R51e is overheating even when idle

[Henrique de Moraes Holschuh]

On Wed, 01 Apr 2009, Henrique de Moraes Holschuh wrote:
> Executive summary: AFAIK, that thinkpad might be having hardware problems.

BUT, if we are doing worse in recent kernels and the submitter verifies this
testing an older kernel, it is a bug and we need to find and fix it.

-- 
  "One disk to rule them all, One disk to find them. One disk to bring
  them all and in the darkness grind them. In the Land of Redmond
  where the shadows lie." -- The Silicon Valley Tarot
  Henrique Holschuh

Re: [Bugme-new] [Bug 12994] New: Thinkpad R51e is overheating even when idle

[Len Brown]

> > Executive summary: AFAIK, that thinkpad might be having hardware problems.
> 
> BUT, if we are doing worse in recent kernels and the submitter verifies this
> testing an older kernel, it is a bug and we need to find and fix it.

Agreed.

If we find that older Linux or some version of Windows works better
than the latest Linux, then we have something we need to fix.

If they all fail, then this laptop's hardware issues do not justify
the existence of the p4-clockmod driver in the kernel...

Len Brown, Intel Open Source Technology Center