this mail is sufficient. I copied the information into the ticket. thanks for the update. mds Nebojsa Trpkovic wrote: > Hello. > > /****** > my system: > Chaintech VNF4 Ultra (NForce4 Ultra PCI-E chipset) @default > AMD Athlon64 3000+ (Winchester core, box cooler) @default > 2 x 256MB Kingmax Color RAM 466MHz @400MHz > Asus EAX300SE PCI-E > Maxtor DM+ 9 80GB PATA 2MB > Gentoo linux amd64 multilib, powernow-k8 ondemand loaded > ******/ > > I've posted ticket with question about pwm support on IT8712F chips and > got this answer: > > http://secure.netroedge.com/~lm78/readticket.cgi?ticket=1932 > > So, I haven't been lazy and tried suggested workaround - IT WORKS !!! > > I've compiled vanilla 2.6.11 kernel patched with 2.6.11-mm4.bz2, > loaded modules manualy and added fix_pwm_polarity module parameter for > it87 module: > > modprobe it87 fix_pwm_polarity > > I've got this in my logs: > > Mar 17 20:53:22 titan it87: Found IT8712F chip at 0x290, revision 6 > Mar 17 20:53:22 titan it87 2-0290: Reconfiguring PWM to active high > polarity > > After that I've tried: > > /sys/devices/platform/i2c-2/2-0290/echo 1 > pwm1_enable > /sys/devices/platform/i2c-2/2-0290/echo 1 > pwm2_enable > /sys/devices/platform/i2c-2/2-0290/echo 128 > pwm1 > /sys/devices/platform/i2c-2/2-0290/echo 128 > pwm2 > > and later: > > /sys/devices/platform/i2c-2/2-0290/echo 0 > pwm1 > /sys/devices/platform/i2c-2/2-0290/echo 0 > pwm2 > > Both fans reduced speed and (after echoing zero) stoped. Ofcorse, I was > able to spin them up - peace of cake. :) > All actions were monitored by "watch -n 1 sensors" and visualy. > > The third fan I can see in my sensors does not have control logic > integrated on the mobo. I was not able to change it's speed in window$ > neither (by using SpeedFan). Fourth fan connector on mobo does not > provide neither control nor fan speed information. > Two controleable fans are labeled as CPU FAN (FAN1) and CASE FAN (FAN3) > on the mobo. Third is labeled SYSTEM FAN (FAN2) and fourth is CHIP FAN > (FAN4). > > > I hope I helped a little bit. > I hope this patch will be in stable kernel tree soon, so I can use it > with my gentoo-dev-sources 2.6.11-r1, too. > (I was not able to find this patch outside mm patch, so I couldn't patch > my gentoo kernel to make pwm avaible.. :( ) > > Should I write a ticket visible for everyone about my experiments or > this mail is enought? > > (I'm not subscribed to the list, so please, reply personaly to me) > > Thank you. > Regards, > Nebojsa Trpkovic > > > > > > >
