On Fre, 2013-08-02 at 22:51 +1000, Benjamin Herrenschmidt wrote: > On Fri, 2013-08-02 at 12:03 +0200, Michel Dänzer wrote: > > Could a similar change fix the same problem on desktop G5s? The same > > values for slots_param in windfarm_pm112.c don't help, unfortunately. > > You have a 11,2 and a noisy fan ? Odd, mine(s) don't.... I can dbl check > the values vs. what Darwin uses tomorrow...
Yes, see /proc/cpuinfo below. With older kernels (currently still using Debian's 3.2.0-4-powerpc64 because of this problem), the fans go basically silent as soon as the windfarm modules are loaded. With current kernels, the fans stay at the level OF sets them to, until after a while they go into 'airplane mode'. One thing I notice now is that the lines like [ 9.539173] windfarm: CPUs control loops started. [ 16.209962] windfarm: Backside control loop started. [ 16.262274] windfarm: Slots control loop started. [ 16.371642] windfarm: Drive bay control loop started. no longer appear in dmesg with current kernels. Should they? processor : 0 cpu : PPC970MP, altivec supported clock : 2500.000000MHz revision : 1.1 (pvr 0044 0101) processor : 1 cpu : PPC970MP, altivec supported clock : 2500.000000MHz revision : 1.1 (pvr 0044 0101) processor : 2 cpu : PPC970MP, altivec supported clock : 2500.000000MHz revision : 1.1 (pvr 0044 0101) processor : 3 cpu : PPC970MP, altivec supported clock : 2500.000000MHz revision : 1.1 (pvr 0044 0101) timebase : 33333333 platform : PowerMac model : PowerMac11,2 machine : PowerMac11,2 motherboard : PowerMac11,2 MacRISC4 Power Macintosh detected as : 337 (PowerMac G5 Dual Core) pmac flags : 00000000 L2 cache : 1024K unified pmac-generation : NewWorld -- Earthling Michel Dänzer | http://www.amd.com Libre software enthusiast | Debian, X and DRI developer _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev