I was a little confused about exactly which version of the kernel you
wanted to test, but it's a moot point because all of the ones I tried
had the bug still.

I'm still using Ubuntu 12.04 so sudo apt-get dist-upgrade just keeps me
on v3.5.0-40, which definitely has the bug. I also tested v3.11-rc1
(built 7/14) off of the Ubuntu Mainline PPA, v3.11-rc5 (it had the patch
by Rafael Wysocki I mentioned previously), and v3.12-rc1 (the latest
version). Every single one showed the bug, which I confirmed by checking
the dmesg logs after booting up with a stable kernel. Actually, none of
those three kernels even made it to the login screen.

It's a little unnerving that whatever changes fixed the bug around May
this year have been canceled out since then. Seeing the glass half-full
though, once I have some free time, I can do a standard bisection to see
where the fix was knocked out. That might give us a little more data to
work with.

** Changed in: linux (Ubuntu)
       Status: Incomplete => Confirmed

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https://bugs.launchpad.net/bugs/1009312

Title:
  10de:0426 GPU loads unreliably, possible kernel timeout

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