Red Hat Bugzilla – Bug 212864
Do you smell smoke? Who shut down the frickin' fans?
Last modified: 2008-05-06 12:37:28 EDT
Description of problem:
It's too quiet!
Version-Release number of selected component (if applicable):
SOLID on this system
Steps to Reproduce:
Fans that are running on power - on shut down.
They should keep running.
This is the first time this system has acted this way. - prior to installation
of FC6, this box was about as loud as a vacuum cleaner.
While I enjoy the peace, I don't want to burn my house down either.
What did this?
Hm, so you're saying your fans get disabled during the bootup of FC6?
That would be really strange indeed. I've tested it on a lot of machines here
and none of the showed this problem.
Did you do anything special? And have you checked if the fans run with FC5 or
any other operating system?
Read ya, Phil
Created attachment 140622 [details]
dmesg from subject system
The fans worked fine on FC4, FC4 and FC5. I have enclosed the DMESG output
from the subject system - take a look at the lines starting with ACPI ... you
will see the fan(s) turned off.
Note that this is an older system. It seems to me that prior operating systems
would have said something about the BIOS being too old to support ACPI. I
don't see that message now.
I have a temporary workaround. Simply set ACPI=OFF in the kernel command line
on boot. The fans stay running, and the system won't burn the house down.
Pretty sure that the real fix is to revisit the earlier blacklist or other
criteria for allowing ACPI to run, and reinstate that.
Hm, if you need to turn off acpi completely in the kernel to make it work this
sounds very much like a kernel problem.
Reassigning to kernel then.
Read ya, Phil
ACPI_BLACKLIST_YEAR is set to 1999 in the Fedora configuration files.
Is that not working?
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