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<b><a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO --- - [IVB] Apple DP to dual link DVI: [drm:intel_dp_i2c_aux_ch] *ERROR* too many retries, giving up"
href="https://bugs.freedesktop.org/show_bug.cgi?id=60263#c12">Comment # 12</a>
on <a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO --- - [IVB] Apple DP to dual link DVI: [drm:intel_dp_i2c_aux_ch] *ERROR* too many retries, giving up"
href="https://bugs.freedesktop.org/show_bug.cgi?id=60263">bug 60263</a>
from <span class="vcard"><a class="email" href="mailto:dr.ronald.moore@gmail.com" title="Ronald Moore <dr.ronald.moore@gmail.com>"> <span class="fn">Ronald Moore</span></a>
</span></b>
<pre>(In reply to <a href="show_bug.cgi?id=60263#c11">comment #11</a>)
<span class="quote">> Ronald, could you test with the attached patch if it makes any difference?</span >
Yes, I could; yes, I did; and yes, it does! My Display-Port Adapter works now!
That seems to be the fix we've been looking for!
(That was the short version - here some details...)
I tried this patch both with the DRM-Intel-Nightly-Branch (3.10.0-rc7) and with
the stock arch linux kernel (3.9.9), and the results seemed the same: It works,
both with external monitors and with a projector. Plug-and-play: I plug the
cable into the adapter, the adapter into the notebook, and within a second or
three the external display lights up.
Curiosity: The log messages "*ERROR* too many tries, giving up" still appear,
although everything is working.
Irritation: xrandr, arandr and the Gnome-3-Displays-Settings Interface to
xrandr (what is the proper name for that thing?) all consider the external
displays to be "unknown" and refuse to offer a resolution larger than 1024x768.
Using xrandr I managed to blank out both screens (notebook and external) until
I unplugged the adapter - but this is a problem I have hardly begun to look at,
and which I may just decide to live with: My main external monitor has an hdmi
cable and that works (has worked the whole time) just fine (and 1024x768 is
just barely enough for presentations with a projector).
So, if you need any more information, log files, whatever, please let me know
what you need, but I'm happy - for the time being. Mostly I'm curious now when
this patch will make it's way into the stock kernels!</pre>
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