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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - Apple miniDP-to-VGA adapter doesn't work anymore since Kernel 4.1"
href="https://bugs.freedesktop.org/show_bug.cgi?id=91451#c4">Comment # 4</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - Apple miniDP-to-VGA adapter doesn't work anymore since Kernel 4.1"
href="https://bugs.freedesktop.org/show_bug.cgi?id=91451">bug 91451</a>
from <span class="vcard"><a class="email" href="mailto:simon@farnz.org.uk" title="Simon Farnsworth <simon@farnz.org.uk>"> <span class="fn">Simon Farnsworth</span></a>
</span></b>
<pre>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.</pre>
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