[Testing] Self-test hangs on XO 1.5

[Mitch Bradley]

  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.

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.



On 10/25/2010 1:48 PM, Cherry Withers wrote:
> Additional Information:
> 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.
> 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?
>
> Error message on failing XO:
>
> "...temperature rose 11 degrees C - FAIL
> Selftest failed. Return code = -1"
>
> ????
>
>
> When I tried the graphical test option to test all of the devices this is what I got:
>
> "
> Testing int:0
> SD card is locked
> Selftest failed. Return code =-1
> ... Press any key to proceed ...
> "
>
> 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.
>
> Help please!
> Thank you,
> Cherry
>
> On Sun, Oct 24, 2010 at 10:27 PM, Cherry Withers <cwithers at ekindling.org <mailto:cwithers at ekindling.org>> wrote:
>
>     Anyone else seeing this?
>
>     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:
>     http://wiki.laptop.org/go/XO_Self_Test
>
>     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:
>
>     "
>     Testing /leds at 0
>     Flashing LEDS
>     RSSI: 75 SSID: LaFleur_Network Channel:1
>     RSSI...(and on and on)
>
>     Okay
>     Testing /switches at 0
>     Activate lid switch
>
>     "
>
>     Then it's stuck on the this state and doesn't proceed. Please advice. Thanks!
>
>     ---Cherry
>
>
>
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