Anup, I noticed in /etc/power.conf I have (default) cpupm disable Does that matter for the proper detection of power modes ?
I believe the acpi is supposed to support two modes: 630 and 900 MHz referred to as powersave and performance mode based on other users running Linux on the same machine and obvioulsy there are two distinct performance modes based on run-time experiments on my laptop. powertop shows: OpenSolaris PowerTOP version 1.1 (C) 2007 Intel Corporation Cn Avg residency P-states (frequencies) C0 (cpu running) (47.5%) 900 Mhz 100.0% C1 2.6ms (52.5%) Wakeups-from-idle per second: 200.2 interval: 6.5s no ACPI power usage estimate available Top causes for wakeups: 50.0% (100.0) <kernel> : genunix`clock 39.3% ( 78.7) <interrupt> : uhci#1 21.5% ( 43.1) sched : <scheduled timeout expiration> 13.8% ( 27.6) <kernel> : genunix`realitexpire 13.8% ( 27.6) <interrupt> : ath#0 7.6% ( 15.2) xterm : <scheduled timeout expiration> 7.4% ( 14.7) <kernel> : uhci`uhci_handle_root_hub_status_change 4.2% ( 8.4) <kernel> : ata`ghd_timeout 1.9% ( 3.8) <kernel> : genunix`schedpaging 1.8% ( 3.7) <kernel> : ehci`ehci_handle_root_hub_status_change 1.8% ( 3.7) <kernel> : uhci`uhci_cmd_timeout Thanks, /Karl -- This message posted from opensolaris.org