[Bug 95311] Unclaimed register detected before reading register 0x44200

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=95311

--- Comment #7 from Adrian Owen <adrian.v.owen at gmail.com> ---
Furthermore, the stack trace only happens if xf86-intel driver has set

Options "AccelMethod" "SNA".

When I set AccelMethod UXA the error doesn't show in kernel messages.

I'm currently running 4.0.0 but would be happy to try an alternate kernel
version if this is helpful.  I have both linux-stable git and Linus tree handy.

I'm happy to try patches and run tests as needed.  I tried the git intel driver
and the "release stack" software versions described in 2015Q1 Intel Graphics
Stack Release but I observed the same results.

The hardware I have is

00:02.0 VGA compatible controller [0300]: Intel Corporation Broadwell-U
Integrated Graphics [8086:1616] (rev 09)


Adrian

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