On Mon, 23 Jul 2007, Henrique de Moraes Holschuh wrote: > On Mon, 23 Jul 2007, Tomasz Torcz wrote: > > short version: when set to "auto" fan never accelerates beyond 2800. > > CPU can get very hot. > > Two possibilites: > > 1. The EC auto mode in your ThinkPad is crap. If this is the real problem, > you will need to file a warranty request with Lenovo to fix the EC firmware. > > 2. The EC doesn't have an auto mode or the auto mode is enabled in a > different way, and the safety net is getting the fan set to level 4. The DSDT uses 0x80 written to EC offset 0x2f as fan auto, which is exactly what I do in thinkpad-acpi. In fact, it does fan control just like a T43, as far as I could see. What is notably absent from your DSDT is any sort of thermal override for the fan, which suggests they expect emergency mode (level 7) to be entered in some other way. Which way, I wouldn't know. Maybe ACPI thermal zones do it. Anyway, right now, it looks like your EC firmware is busted, and that you need to place a support request with Lenovo to get them to fix it. I am *not* sure this is actually it, but IMO auto mode should be smart enough to scale up to fan level 7 when the CPU gets too hot, without the need of any overrides by the operating system. -- "One disk to rule them all, One disk to find them. One disk to bring them all and in the darkness grind them. In the Land of Redmond where the shadows lie." -- The Silicon Valley Tarot Henrique Holschuh ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ ibm-acpi-devel mailing list ibm-acpi-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/ibm-acpi-devel
