Bug 848536
Summary: | Chassis fan and core voltage is reported incorrectly with M5A78L motherboard | ||
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Product: | [Fedora] Fedora | Reporter: | Göran Uddeborg <goeran> |
Component: | lm_sensors | Assignee: | Nikola Pajkovsky <npajkovs> |
Status: | CLOSED UPSTREAM | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
Severity: | low | Docs Contact: | |
Priority: | unspecified | ||
Version: | 17 | CC: | dhoward, hdegoede, jcapik, npajkovs, pknirsch |
Target Milestone: | --- | ||
Target Release: | --- | ||
Hardware: | x86_64 | ||
OS: | Linux | ||
Whiteboard: | |||
Fixed In Version: | Doc Type: | Bug Fix | |
Doc Text: | Story Points: | --- | |
Clone Of: | Environment: | ||
Last Closed: | 2012-08-16 09:32:05 UTC | Type: | Bug |
Regression: | --- | Mount Type: | --- |
Documentation: | --- | CRM: | |
Verified Versions: | Category: | --- | |
oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
Cloudforms Team: | --- | Target Upstream Version: | |
Embargoed: |
Description
Göran Uddeborg
2012-08-15 20:35:28 UTC
Hi, Since that motherboard is using the atk0110-acpi all the values are actually read directly from the BIOS. What you could try to see of you're really getting the same reading twice is changing the fan speeds by loading the system, ie from a terminal run: md5sum /dev/urandom& As many times as you've CPU cores, maybe the fan speeds actually are the same when idle under Linux? Note that there is the accuracy of the sensors to take into account, fan sensors tend to measure quite big "steps" so even though the fans of course will not be rotating at the exact same speed, they could show the same reading. To stop the md5sum cpu-loading process do: "fg" followed by pressing CTRL+c from the same terminal, repeat this as many times as you've started md5sum. If the fans stay the same even when loaded, then that would be suspicious, but as said the values are read directly from the BIOS. As for the CPU voltage, that is likely due to frequency stepping of the CPU, if the CPU runs at a lower frequency then it will often operate at a lower voltage too. So I would expect that to go up when you load the system too (often under the BIOS the CPU runs at its full speed). If all of the above does not help, the first thing to do would be to upgrade your BIOS, if that does not help either, then please send a mail to the lm_sensors mailinglist: http://lists.lm-sensors.org/mailman/listinfo/lm-sensors And put atk0110-acpi in the subject, I'm on that list and the atk0110-acpi driver author follows it actively and promptly replies to any issues. Regards, Hans |