<div dir="ltr"><div>Jani,</div><div><br></div><div>Thank you for explaining further. After checking the manual for my motherboard, I am mistaken. It specifies DVI-I and states the maximum resolution over DVI is 1920x1200@60Hz, so it appears all is well. The fact it worked before is a happy accident.</div>
<div><br></div><div>I have since switched to use displayport, and it is detecting the native resolution as expected.</div><div><br></div><div><br></div><div>Thank you for your time,</div><div><br></div><div>BR,</div><div>
Kenneth</div><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Mar 31, 2014 at 3:43 AM, Jani Nikula <span dir="ltr"><<a href="mailto:jani.nikula@linux.intel.com" target="_blank">jani.nikula@linux.intel.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">On Sun, 30 Mar 2014, Kenneth de Mello <<a href="mailto:kdemello1980@gmail.com">kdemello1980@gmail.com</a>> wrote:<br>
> What about dual-link DVI? I though the additional link addressed the<br>
> pixel clock limitation. Has it only been using a single link this entire<br>
> time, and it's only worked by ignoring the maximum dotclock, so in other<br>
> words, the fact it works at all is the bug?<br>
><br>
> Also, the commit that rejects mode exceeding 165MHz states:<br>
><br>
> "Single-link DVI max dotclock is 165MHz. Filter out modes with higher<br>
> dotclock when the monitor doesn't support HDMI."<br>
><br>
> Does this mean HDMI in general? This monitor does support HDMI, but the<br>
> maximum resolution when using the physical HDMI ports is 1920x1080.<br>
><br>
> What is the solution here, to switch to displayport if I want to use kernel<br>
> 3.13.7 and beyond? (This is fine, I just need to know so I can buy the<br>
> cable).<br>
<br>
For further details please see the bug report [1].<br>
<br>
The reason for the change was that modes with higher than 165 MHz<br>
dotclock are invalid for single-link DVI. We don't support dual-link DVI<br>
natively. Thus this is about HDMI->DVI adapters which are either<br>
dual-link DVI (Ville says highly unlikely) or single-link DVI that allow<br>
higher than 165 MHz dotclock in the monitor end. I'm not sure how we<br>
could distinguish that from a regular single-link DVI that *is* bound by<br>
the maximum dotclock.<br>
<br>
Product details for the adapter you're using might be interesting.<br>
<br>
BR,<br>
Jani.<br>
<br>
<br>
<br>
[1] <a href="https://bugzilla.kernel.org/show_bug.cgi?id=72961" target="_blank">https://bugzilla.kernel.org/show_bug.cgi?id=72961</a><br>
<span class="HOEnZb"><font color="#888888"><br>
<br>
--<br>
Jani Nikula, Intel Open Source Technology Center<br>
</font></span></blockquote></div><br></div></div>