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The heat spreader is a piece of metal that conducts heat away from
the CPU. If it is not touching the CPU properly, the CPU will get
hot faster when it is executing a lot of instructions, and may
eventually enter a lower-clock-speed mode to prevent overheating.<br>
<br>
The heat spreader test attempts to detect this situation by
measuring the rate of temperature rise. It idles the CPU for 5
seconds to let the temperature fall, then runs for 5 seconds. If
the temperature rises by more than 8 degrees C during the 5-second
on period, a failure is declared.<br>
<br>
<br>
<br>
On 10/25/2010 1:48 PM, Cherry Withers wrote:
<blockquote
cite="mid:AANLkTimnu3xgCtGuZLm0ivk+hve5efG2bua_6o1+6uD3@mail.gmail.com"
type="cite">Additional Information:<br>
1) I figured out why it was stuck on the lid switch portion of the
test. It needed me to close the screen and I figured out that I
needed to put the screen in ebook format to do the ebook switch.<br>
2) I am testing with two XO 1.5s. One passes the heat spreader
test, the other doesn't. What in the world is a heat spreader
test?<br>
<br>
Error message on failing XO:<br>
<br>
"...temperature rose 11 degrees C - FAIL<br>
Selftest failed. Return code = -1"<br>
<br>
????<br>
<br>
<br>
When I tried the graphical test option to test all of the devices
this is what I got:<br>
<br>
"<br>
Testing int:0<br>
SD card is locked<br>
Selftest failed. Return code =-1<br>
... Press any key to proceed ...<br>
"<br>
<br>
Every thing else seems ok except for the heat spreader test error
and the above error on the laptops. Weird thing though is that the
information on battery test seem to flash for a millisecond. I
only saw this when I kept pressing the battery icon and not
getting anything except "battery" text on the bottom.<br>
<br>
Help please!<br>
Thank you,<br>
Cherry<br>
<br>
<div class="gmail_quote">On Sun, Oct 24, 2010 at 10:27 PM, Cherry
Withers <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:cwithers@ekindling.org">cwithers@ekindling.org</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt
0.8ex; border-left: 1px solid rgb(204, 204, 204);
padding-left: 1ex;">Anyone else seeing this? <br>
<br>
I have a 10.1.2 build on my 1.5. I was trying the instructions
for the hardware self-test on the following page:<br>
<a moz-do-not-send="true"
href="http://wiki.laptop.org/go/XO_Self_Test"
target="_blank">http://wiki.laptop.org/go/XO_Self_Test</a><br>
<br>
I was holding the left side arrow of the rocker game key while
I click on the power button. First of all, it doesn't go
through the same sequence that was stated on the instructions
of that page. It does the following before it freezes:<br>
<br>
"<br>
Testing /leds@0<br>
Flashing LEDS<br>
RSSI: 75 SSID: LaFleur_Network Channel:1<br>
RSSI...(and on and on)<br>
<br>
Okay<br>
Testing /switches@0<br>
Activate lid switch<br>
<br>
"<br>
<br>
Then it's stuck on the this state and doesn't proceed. Please
advice. Thanks!<br>
<font color="#888888">
<br>
---Cherry<br>
<br>
</font></blockquote>
</div>
<br>
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</pre>
</blockquote>
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