[Bug 1163573] [NEW] Ubuntu 12.10 overheats my laptop until it shutdowns without notice

[xlash911]

Public bug reported:

I installed Ubuntu 12.10 on my work computer, a HP ProBook 6450b. When I
use many applications, and a virtual machine, it uses a lot of CPU.

Under such circumstances, my CPU starts overheating (that's my guess),
and it can lead to an abrupt shutdown of my PC, without any notice.

With lm-sensors, I notice my CPU temperature gets as high as 105 °C,
which is the critical limit. However, I can't see my CPU Fan speed,
although I can hear it run at high seed.

$ sensors
acpitz-virtual-0
Adapter: Virtual device
temp1:        +48.0°C  (crit = +127.0°C)
temp2:         +0.0°C  (crit = +128.0°C)
temp3:         +0.0°C  (crit = +128.0°C)
temp4:        +50.0°C  (crit = +127.0°C)
temp5:         +0.0°C  (crit = +128.0°C)
temp6:        +30.3°C  (crit = +128.0°C)
temp7:         +0.0°C  (crit = +128.0°C)
temp8:        +69.0°C  (crit = +128.0°C)
temp9:        +73.0°C  (crit = +128.0°C)
temp10:       +59.0°C  (crit = +128.0°C)

coretemp-isa-0000
Adapter: ISA adapter
Core 0:       +72.0°C  (high = +95.0°C, crit = +105.0°C)
Core 2:       +72.0°C  (high = +95.0°C, crit = +105.0°C)

I've captured my latest syslogs around last crash :

Apr  2 15:26:29 HP-ProBook-6450b kernel: [18766.765333] CPU1: Core temperature above threshold, cpu clock throttled (total events = 22)
Apr  2 15:26:29 HP-ProBook-6450b kernel: [18766.765335] CPU0: Core temperature above threshold, cpu clock throttled (total events = 22)
Apr  2 15:26:29 HP-ProBook-6450b kernel: [18766.766364] CPU0: Core temperature/speed normal
Apr  2 15:26:29 HP-ProBook-6450b kernel: [18766.766365] CPU1: Core temperature/speed normal
Apr  2 15:26:50 HP-ProBook-6450b avahi-daemon[958]: Invalid response packet from host 172.21.54.19.
Apr  2 15:26:55 HP-ProBook-6450b avahi-daemon[958]: Invalid response packet from host fe80::84ac:8480:9bea:773d.
Apr  2 15:28:37 HP-ProBook-6450b kernel: imklog 5.8.6, log source = /proc/kmsg started.
Apr  2 15:28:37 HP-ProBook-6450b rsyslogd: [origin software="rsyslogd" swVersion="5.8.6" x-pid="938" x-info="http://www.rsyslog.com"] start
Apr  2 15:28:37 HP-ProBook-6450b rsyslogd: rsyslogd's groupid changed to 103
Apr  2 15:28:37 HP-ProBook-6450b rsyslogd: rsyslogd's userid changed to 101
Apr  2 15:28:37 HP-ProBook-6450b rsyslogd-2039: Could not open output pipe '/dev/xconsole' [try http://www.rsyslog.com/e/2039 ]
Apr  2 15:28:37 HP-ProBook-6450b kernel: [    0.000000] Initializing cgroup subsys cpuset

CPU speed changes between 1.2 GHZ and 2.4 GHz depending on load.

I'm also using the following GPU driver :

$ lshw -c video
WARNING: you should run this program as super-user.
  *-display               
       description: VGA compatible controller
       product: Core Processor Integrated Graphics Controller
       vendor: Intel Corporation
       physical id: 2
       bus info: pci at 0000:00:02.0
       version: 02
       width: 64 bits
       clock: 33MHz
       capabilities: vga_controller bus_master cap_list rom
       configuration: driver=i915 latency=0
       resources: irq:45 memory:d0000000-d03fffff memory:c0000000-cfffffff ioport:4050(size=8)

** Affects: lm-sensors (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: cpu overheat shutdown

** Attachment added: "cat /proc/cpuinfo"
   https://bugs.launchpad.net/bugs/1163573/+attachment/3616088/+files/cpuinfo

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Title:
  Ubuntu 12.10 overheats my laptop until it shutdowns without notice

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