Bug 5970
Summary: | Fan Always Runs on Sager NP4750 ; /proc/acpi/fan directory is empty | ||
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Product: | ACPI | Reporter: | Bryan K. Walton (bryankwalton) |
Component: | Power-Fan | Assignee: | Konstantin Karasyov (konstantin.karasyov) |
Status: | REJECTED INVALID | ||
Severity: | normal | ||
Priority: | P2 | ||
Hardware: | i386 | ||
OS: | Linux | ||
Kernel Version: | 2.6.15 | Subsystem: | |
Regression: | --- | Bisected commit-id: | |
Attachments: |
Output of acpidump
Output of dmesg |
Description
Bryan K. Walton
2006-01-27 10:33:35 UTC
Could you provide the output of acpidump and dmesg commands. Also you could check if your BIOS has OS-related settings. If present, you could try to change them to see if it helps. 'Windows' could be safer. Created attachment 7180 [details]
Output of acpidump
Here is the output of acpidump that you requested.
Created attachment 7181 [details]
Output of dmesg
Here is the output of dmesg that you requested. Also, as for bios settings,
there is nothing related to acpi or fan. The only setting that looks like it
could have any relevance is an option to choose the OS. I currently have it
set to "other". I'll change it to "windows" to see if it makes a difference.
This morning, I changed the OS setting in the bios from "Other" to "Win2K/WinXP" and it hasn't made a difference. Thanks. Bryan, In your DSDT table neither active cooling device defined (it should have '_AL0' name), nor device with fan HID (hardware ID for fan is 'PNP0C0B') is present. But the active trip point is set to 70C ('_AC0'). This causes that "Invalid active threshold" message to appear. I think this is a BIOS bug. You could try to build your kernel with ACPI disabled and APM enabled to make fan change its state. Unfortunately, it appears impossible to manage the fan from the ACPI on your system. |