[lm-sensors] Gigabyte GA-P35-DS3P - VID Zero value

Simon Wilson simon at simonandkate.net
Tue Oct 20 04:05:58 CEST 2009


Quoting Adam Nielsen <a.nielsen at shikadi.net>:

>> The file is dated Sept 20 2006. I suspect this may be the issue... there
>> is nothing in there for VRM 10 or 11. It would appear that I need a
>> later hwmon-vid driver? Or am I completely on the wrong track there LOL...
>
> That's only your installed header file.  It would only affect userspace
> programs doing the conversion themselves.  The latest code from the
> kernel module is at:
>
> http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=blob;  
> =drivers/hwmon/hwmon-vid.c;hb=HEAD
>
> And all the VID revisions are defined in there.
>
> Well it looks like the value isn't being read properly during chip
> initialisation.  Perhaps a bug in the it87 hwmon driver?
>
> The VID seems to get read in around line 1037:
>
> http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=blob;  
> =drivers/hwmon/it87.c#l1035
>
> Probably more research required to figure out why that value is zero on
> our motherboards.
>
> Cheers,
> Adam.
>

Thanks for clarifying that. Still new at all this stuff really... :)

Well, based on the git version of hwmon-vid.c the fact that  
/sys/class/hwmon/hwmon0/device/vrm is originally 110 on my system  
would seem to indicate then that the hwmon-vid driver is correctly  
setting the VRM version based on my Conroe CPU to 110. Is there any  
way to interrogate the hwmon-vid driver to see whether it is working  
at a lower level before the it87 driver reads it in?

Perhaps the elrepo.org kmod-it87 driver that I am using needs to be  
updated with more recent code to support the different VID  
configuration of the 8718 and 8720 chips...

Simon.

-- 
Simon Wilson
www.simonandkate.net



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