I've done some testing and it seems that if your Xbox is in a large enough room with good air circulation then a fan speed of 10% is sufficient! I've updated the monitors package (which contains fanctl) to feature a "quiet" mode that can be activated by adding the -q/--quiet switch. When this is enabled the fan speed floor is lowered to 10% rather than the default 20%. This mode can also be enabled at startup in /etc/conf.d/fanctl by changing "QUIET=0" to "QUIET=1".
If your system usually has the fan speed higher than 20% then quiet mode is NOT for you and, though it is unlikely, may cause your Xbox to overheat. Remember that these tools come with no warranty and while I have tested them as thoroughly as I can, I cannot be held responsible for any damage they may cause.
Go run magic to update. http://gentoox.shallax.com/modules.p...rticle&sid=451