[Bug 91451] Apple miniDP-to-VGA adapter doesn't work anymore since Kernel 4.1

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=91451

--- Comment #4 from Simon Farnsworth <simon at farnz.org.uk> ---
Can you test a boot with "drm_kms_helper.dp_aux_i2c_transfer_size=1" on the
kernel command line? That will reduce the transfer size back to 1 byte per AUX
read, but leave the rest of my changes in place.

If that works, I'd be interested in knowing whether transfer_size of 2, 4, or 8
works for you - Windows always uses 16 on Intel Haswell platforms. You have
Broadwell, which I haven't had a chance to test.

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