OT: Broken BIOS defaults
fedora at westexe.demon.co.uk
Tue Aug 30 12:41:20 UTC 2005
david walcroft wrote:
> I'm getting curious about this as it appears at every reboot,what does
> it affect (if anything) and do I need to fix it.
> reddwarf kernel: it87: Found IT8705F chip at 0x290, revision 2
> reddwarf kernel: it87 1-0290: Detected broken BIOS defaults, disabling
> PWM interface
A quick Google suggests PWM can control fan speed on certain system
fans, based on temperature.
> ... completely disables
> the fan speed control interface if the initial configuration looks weird
> (all fans supposedly stopped and polarity set to "active low"). This
> should protect users of the driver who have a faulty BIOS.
In other words, it keeps the fans going on full so you don't overheat.
The message continues:
> When a bogus configuration is detected, we would of course complain in
> the logs and invite the user to complain to his/her motherboard maker
So that's what you're supposed to do. Do you have the latest BIOS?
E-mail address: james | "If you make everything a life and death proposition
@westexe.demon.co.uk | you're going to have problems. For one thing, you'll
| be dead a lot."
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