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[WeatherGod <ben.v.root@xxxxxxxxx>]

** Also affects: acpi (Ubuntu)
   Importance: Undecided
       Status: New

** Changed in: acpi (Ubuntu)
       Status: New => Confirmed

** Description changed:

- Toshiba Satellite P100 PSP-A3C laptop, Nvidia GeForce Go 7600, running
- Karmic 2.6.31-15, Nvidia proprietary driver 185.
+ ******* Problem *********
+ Toshiba Satellite P100 PSP-A3C laptop, Nvidia GeForce Go 7600, running Karmic 2.6.31-15, Nvidia proprietary driver 185.
  
  GNOME-Sensors applet reports CPU stable at about 60 C, GPU climbs slowly
  up to about 90 C, then the system shuts down.
  
  On 9.04, I had the same problem, but I was able to load a custom DSDT,
  after which the fan ran properly, and the system stayed cool, GPU around
  65 C. Also stays cool under Windows XP.
  
  I understand that it is not possible to load a custom DSDT under karmic,
  so I need another solution.
+ 
+ ******** Possible Fix **********
+ After some more hacking in DSDT, Yann found that fan control is located in ACPI EC (embedded controller) address space : VTMP acpi byte in acpi EC bit field, at offest 0x5E.
+ 
+ Yann found some similar concerns on some acer laptops (having the same
+ WMI related acpi methods, located in device AMW0), and with a perl
+ script that Yann was able to modify in order to setup a constant fan
+ speed.  That perl script is attached to this report.

-- 
Nvidia GPU overheating on Toshiba P100
https://bugs.launchpad.net/bugs/484875
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