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Re: random reboots of my Lenovo ThinkPad (3.16.7-ckt20-1+deb8u1) (kernel stack trace)

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> On 2015-12-22 22:18, Anders Andersson wrote:
>> First thing I do in a case like this is to run memtest86 in some form
>> on the hardware.
> Good point, but:
>
> 1. those stack traces are always nouveau related
> 2. memtest86+ yields nothing
> 3. often upon logging into X, before the desktop appears, I am getting
> unexpected splash screens; they look like:
> http://people.eisenbits.com/~stf/load/20151224-bw-tiling.png , or
> sometimes that is a mangled view of what was being displayed before the
> crash+reboot.
>
> Perhaps that is a graphics card...
>
I had a similar problem on a T520. If you have two graphics cards (ie, 
Intel Optimus)
It will cause crashes when the graphics swaps between the devices.
I resolved it by disabling one of the graphics cards in the bios.

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random reboots of my Lenovo ThinkPad (3.16.7-ckt20-1+deb8u1) (kernel  stack trace) Staszek <stf.list.other@eisenbits.com> - 2015-12-22 21:40 +0100
  Re: random reboots of my Lenovo ThinkPad (3.16.7-ckt20-1+deb8u1)  (kernel stack trace) Anders Andersson <pipatron@gmail.com> - 2015-12-22 22:20 +0100
    Re: random reboots of my Lenovo ThinkPad (3.16.7-ckt20-1+deb8u1)  (kernel stack trace) Staszek <stf.list.other@eisenbits.com> - 2015-12-24 14:10 +0100
      Re: random reboots of my Lenovo ThinkPad (3.16.7-ckt20-1+deb8u1)  (kernel stack trace) Neil Roberts <neilr@matrixscience.com> - 2015-12-24 15:00 +0100
      Re: random reboots of my Lenovo ThinkPad (3.16.7-ckt20-1+deb8u1)  (kernel stack trace) Sven Arvidsson <sa@whiz.se> - 2015-12-24 15:10 +0100
        Re: random reboots of my Lenovo ThinkPad (3.16.7-ckt20-1+deb8u1)  (kernel stack trace) Anders Andersson <pipatron@gmail.com> - 2015-12-24 20:30 +0100
        Re: random reboots of my Lenovo ThinkPad (3.16.7-ckt20-1+deb8u1)  (kernel stack trace) Staszek <stf.list.other@eisenbits.com> - 2015-12-25 03:30 +0100
          Re: random reboots of my Lenovo ThinkPad (3.16.7-ckt20-1+deb8u1)  (kernel stack trace) Charlie Kravetz <cjk@teamcharliesangels.com> - 2015-12-25 04:10 +0100
          Re: random reboots of my Lenovo ThinkPad (3.16.7-ckt20-1+deb8u1)  (kernel stack trace) Sven Arvidsson <sa@whiz.se> - 2015-12-25 15:50 +0100
            Re: random reboots of my Lenovo ThinkPad (3.16.7-ckt20-1+deb8u1)  (kernel stack trace) Staszek <stf.list.other@eisenbits.com> - 2016-01-01 00:40 +0100
          Re: random reboots of my Lenovo ThinkPad (3.16.7-ckt20-1+deb8u1)  (kernel stack trace) Patrick Bartek <nemommxiv@gmail.com> - 2015-12-25 19:40 +0100
      Re: random reboots of my Lenovo ThinkPad (3.16.7-ckt20-1+deb8u1)  (kernel stack trace) Charlie Kravetz <cjk@teamcharliesangels.com> - 2015-12-24 15:50 +0100

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