I've got some new observations on this that might help narrow down the
problem.

(1) thermald
I've got thermald installed, and the default configuration seems to work 
*after* the standby/wakeup cycle. Before the machine goes into standby, the 
file cat /sys/class/thermal/thermal_zone0/temp constantly reads 40000 (40 °C), 
even when the processor is already way beyond 70°C (as monitored by lm-sensors' 
coretemp) so thermald doesn't trigger the CPU slowdown.

After the standby/wakeup cycle, this temperature reading follows the
coretemp, and thermald acts correctly.

It seems that whatever the secret windows sauce does, also happens after
a wakeup from standby. So maybe there's something I can do to automate
this behaviour during startup of the machine, not requiring human
intervention to enter "stable operation zone".

(2) apport-collect
When I run apport-collect and ignore its warning that submitting to the current 
bug is not recommended, the window it gives me lists as the first line 
"Package: linux (not installed)". I think it will not have collected all the 
info, but I'll send whatever it picks up and set the bug status to confirmed; 
maybe someone can help me operate it correctly or tell me to spawn a new bug 
with the apport-bug.

** Tags added: apport-collected trusty

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You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/728733

Title:
  fan only works when my acer 5315 is booted then stops

Status in acpi package in Ubuntu:
  Confirmed
Status in linux package in Ubuntu:
  Confirmed

Bug description:
  Binary package hint: acpi

  fan only works when my acer 5315 is booted then stops.i have a acer
  aspire 5315 laptop. My fan stopped working after installing ubuntu
  from vista. ive changed it for a new one and still the same problem.
  no dust aswel. please help

  ProblemType: Bug
  DistroRelease: Ubuntu 10.10
  Package: acpi 1.5-2
  ProcVersionSignature: Ubuntu 2.6.35-22.33-generic 2.6.35.4
  Uname: Linux 2.6.35-22-generic i686
  Architecture: i386
  Date: Thu Mar  3 22:18:12 2011
  EcryptfsInUse: Yes
  InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release i386 (20101007)
  ProcEnviron:
   LANG=en_GB.utf8
   SHELL=/bin/bash
  SourcePackage: acpi

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