> Try adding the following to your /etc/power.conf > file: > > cpupm enable > cpu-threshold 15s > > I believe these keywords are in the the power.conf(4) > man page shipping > with snv_70b. > > Then execute /usr/pmconfig. I think you'll find that > code has already > been written to reduce the speed of your CPU. And > we're working on > improving it and Solaris power management in general. > We've got a bit of > catching up to do. > > Mark
Hi, after adding those commands, and executing /usr/sbin/pmconfig, the clock rate in my laptop does change up/down, so it appears to work. I've seen it running at 1.000, 1.333, 1.667 and 2.000 GHz which are all the supported frequencies. This Sony Vaio VGN-SZ4XWN/C laptop is rather odd in that it has two graphics chips - both a low power/low performance Intel GMA 950 chipset and a higher performance, but more power hungry Nvida GeForce Go 7400 GPU. There is a switch on the front panel which selects which one is used (under Vista, one needs a reboot for it to change). I'[ll have to try to get the integrated chipset to work, as I think that will save quite a bit of power. I notice under Vista the laptop runs much hotter if the GeForce GPU is used. But during the Solaris install, it reported my graphics was unsupported when I had the switch in the 'Stamina' (i.e. Intel GMA 950) position, so I had to switch to the 'Speed' (i.e. Nvida) position. Since installation, it boots in either position, but I *think* it is using the power hungry Nvida all the time. Also I notice this in /var/adm/messages: [ID 314293 kern.info] device pci8086,[EMAIL PROTECTED](display#0) keeps up device [EMAIL PROTECTED],0(sd#0), but the latter is not power managed I suspect there are a few things that eat the power which with some effort can probably be reduced - just needs a bit of tweaking in places. Thanks for your help. I seem to be making some progress with this now. It's amazing how much quicker this 2 GHz dual core laptop with 2 GB of RAM is under Solaris than Vista. It is not old (< 6 months old) and was not a budget laptop (cost around $3200), but the combination of Vista and Sony's useless software made it run rather slowly. This message posted from opensolaris.org _______________________________________________ opensolaris-discuss mailing list [email protected]
