Excessive CPU fan usage

[Tristan Rivoallan]

Just updated to Ibex on a Dell Latitude D630c. Everything went fine except that now the CPU fan keeps loudly going all the time.

Which informations must i provide in order for this bug to be qualified ?

[Leann Ogasawara (leannogasawara)]

Hi Tristan,

Per the kernel team's bug policy, can you please attach the following information. Please be sure to attach each file as a separate attachment.

* cat /proc/version_signature > version.log
* dmesg > dmesg.log
* sudo lspci -vvnn > lspci-vvnn.log

For more information regarding the kernel team bug policy, please refer to https://wiki.ubuntu.com/KernelTeamBugPolicies . Thanks again and we appreciate your help and feedback.

[Tristan Rivoallan (tristan-rivoallan)]

Also took the steps in https://wiki.ubuntu.com/DebuggingACPI "Fan Issues" : there is no ACPI-based fan control on my system.

[Tristan Rivoallan (tristan-rivoallan)]

I was able to fix the issue by downgrading "NVIDIA accelerated graphics driver" from version 177 to version 173.

[Brent Thomson (diepiapaopolopo)]

I have the same issue with a Latitude D630. Rolling back the Nvidia driver also worked for me.

One other thing to note: After booting with the newer graphics driver and getting the fan cranked up, rebooting, even to a different operating system (Win XP) wouldn't reset the fan. Had to shut all the way down and then start back up before the fan would ever start responding to changes in actual operating temperature again.

[Launchpad Janitor (janitor)]

Per a decision made by the Ubuntu Kernel Team, bugs will longer be assigned to the ubuntu-kernel-team in Launchpad as part of the bug triage process. The ubuntu-kernel-team is being unassigned from this bug report. Refer to https://wiki.ubuntu.com/KernelTeamBugPolicies for more information. Thanks.