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    <body><span class="vcard"><a class="email" href="mailto:cancan.feng@intel.com" title="cancan,feng <cancan.feng@intel.com>"> <span class="fn">cancan,feng</span></a>
</span> changed
              <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - [HSW] native mode 3840x2160 not supported on 4K TV with HDMI"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=67030">bug 67030</a>
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             <table border="1" cellspacing="0" cellpadding="8">
          <tr>
            <th>What</th>
            <th>Removed</th>
            <th>Added</th>
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         <tr>
           <td style="text-align:right;">Status</td>
           <td>NEEDINFO
           </td>
           <td>NEW
           </td>
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      <p>
        <div>
            <b><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - [HSW] native mode 3840x2160 not supported on 4K TV with HDMI"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=67030#c17">Comment # 17</a>
              on <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - [HSW] native mode 3840x2160 not supported on 4K TV with HDMI"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=67030">bug 67030</a>
              from <span class="vcard"><a class="email" href="mailto:cancan.feng@intel.com" title="cancan,feng <cancan.feng@intel.com>"> <span class="fn">cancan,feng</span></a>
</span></b>
        <pre>(In reply to <a href="show_bug.cgi?id=67030#c16">comment #16</a>)
<span class="quote">> (In reply to <a href="show_bug.cgi?id=67030#c15">comment #15</a>)
> > About VGA, the binary edid is 0 bit, and I can't grab EDID by using "xrandr
> > --verbose".

> But apparently you have a mod list for VGA ... Can you please double-check?
> Please also check in /sys/class/drm/*/edid in case X is eating the edid.

> If the edid isn't there for VGA I think we need to file a 2nd bug for this
> screen on haswell+vga.</span >

You are right..
EDID of VGA:
                00ffffffffffff004d77010001000000
                1c1601031f5d3478ca31c3a3554a9b24
                10474aafcf0001010101010101010101
                0101010101011a3680a070381f403020
                3500a20b3200001a000000fd0032551f
                460f000a202020202020000000fc0053
                6b79776f727468205548440a00000010
                0053563432325856540a2020202000ee</pre>
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