[Bug 39083] Laptop Fans are disabled after Flight 6 Upgrade

[Paul Drain]

Public bug reported:

Affects: linux-source-2.6.15 linux-image-2.6.15-20-386 (Ubuntu)
       Severity: Normal
       Priority: (none set)
         Status: Unconfirmed


Description:
After upgrading to Flight 6 on a newly installed Flight 4 install, the
fan on my laptop no longer seems to work after X boots.

If I start the machine in rescue mode, the fan fires up OK and keeps the
machine ~65degrees.

If I exit the rescue mode, the fan shuts down after the "Checking
Battery State" initscript starts.

A standard boot process has the fans running until just before the GDM
screen appears, then the fans seem to shut down.

All other ACPI functions (battery life, thermal zone, etc) still work
correctly, verified with an 'acpi -t' run.

This results in a hard lock on AC or battery after a CPU intensive
process (like Firefox + Evolution) has been running for an hour or so.

The same hard lock can be obtained on AC by running gnome-screensaver
with the footlogo-floaters theme.

** Attachment added: "Results of 'dmesg' on the affected machine"
   http://librarian.launchpad.net/2027891/compaqevo_n160_dmesg

** Attachment added: "... and dmidecode"
   http://librarian.launchpad.net/2027893/compaqevo_n160_dmidecode

** Attachment added: "... and lspci"
   http://librarian.launchpad.net/2027895/compaqevo_n160_lspci

** Attachment added: "... and the output of /proc/acpi/thermal_zone/*/*"
   http://librarian.launchpad.net/2027900/compaqevo_n160_proctz
-- 
Laptop Fans are disabled after Flight 6 Upgrade
https://launchpad.net/malone/bugs/39083