On Sun, 07 Jan 2007, Thomas Gruber wrote: > I am using a T42 since one year now. Since 2 or 3 months or so (after i > upgraded my bios and EC i think), the fan of my notebook began to act > weird: Sometimes it acts just normal (starts at 55 degrees, goes up to > 3500~4000 RPM on 60 degrees or so, and keeps my notebook below or at 65 > degrees till the load drops) Most of the time, the fan turns on and stays > at ~2200 RPM (according to ibm-acpi readings). the fan also does NOT go > faster, when the temperature raises. Under load the Temperature just keeps > raising beyond 80 degrees (i did not want to heat it up further). Yikes. Which version of ibm-acpi? Did you try it with the latest ibm-acpi patches (0.13-20061231)? Try removing the kernel ACPI FAN module, does it fix the problem? Compile your kernel with something older than gcc 4.1 if you're using gcc 4.1, btw. If you engage "fan disengaged mode" when the fan is stuck at 2200 RPM, does it go faster? > Furthermore, sometimes the fan cannot be read by ibm-acpi although the fan > is running (i took of the KB to see if it is) Also IF ibm-acpi is reading This either means the EC is having trouble reading the fan speed (which, given the closed control loop, might explain all sort of weird problems), or that something is interferring with ibm-acpi, ACPI, or the EC itself. If replacing that fan is easy for you (i.e. your thinkpad is still under warranty), go for it. > Has anyone of you experienced something similar, and knows a solution > (besides sending the notebook back to IBM) to solve this? I'd recommend also asking this at the linux-thinkpad ML and also on forums.thinkpads.com. It is certainly the first time I hear of it... -- "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 ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys - and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ ibm-acpi-devel mailing list ibm-acpi-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/ibm-acpi-devel
