Date: Wed, 17 Jan 2001 10:29:19 -0500 (EST) From: Peter Dufault <dufault@hda.hda.com> To: current@freebsd.org Subject: Re: Fan speed control sony vaio lx800 slimtop Message-ID: <200101171529.f0HFTJw46571@hda.hda.com> In-Reply-To: <200101141817.f0EIH3F34298@hda.hda.com> from Peter Dufault at "Jan 14, 2001 01:17:02 pm"
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I'm giving up on turning down the slimtop fan for now, the only way I can think of to figure out how Sony is turning down the fan is to boot windows, single step through the installation of the device drivers until I know which one is doing it, and then disassemble it to see what they're up to. If someone has any other ideas let me know. I might hook a scope up to the fan and boot windows just to see if it simply turning the fan down or is varying it. Maybe I'll add a voltage regulator and a few bits of control from the unused printer (it isn't run off the MB) and vary the fan speed brute force. I asked Sony support about the fan issue, they promptly replied that running the fan at high continuosly is fine, that no additional information is available, and that they will "record my interest in alternate operating systems". At least they have a polite way of saying they support nothing but Windows. So I'm going to roll this system back to 4.2 stable and start using it for work. If anyone wants me to try anything out with -current or ACPI then holler today. Two additional ACPI-APM things I did notice: 1. Putting APM into the config caused the keyboard switch to start working to turn the machine on. I'd taken it out at someones suggestion. This is weird, I can only guess APM does something as the machine powers off that ACPI doesn't. 2. Using APM to suspend the machine causes the LED on the power switch to turn amber, using "acpiconf -s 1" doesn't, the machine suspends but the LED stays green. If anyone has any little snippet they want me to try before going back to stable let me know. Anyway, if anyone buys one of these things then rubber bumpers on the base and Dynamat lining the plastic case makes it as quiet as a "normal" computer plus gives it a real solid feel. Peter -- Peter Dufault (dufault@hda.com) Realtime development, Machine control, HD Associates, Inc. Fail-Safe systems, Agency approval To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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