<html>
<head>
<base href="https://bugs.freedesktop.org/" />
</head>
<body><span class="vcard"><a class="email" href="mailto:nickleiten@gmail.com" title="N.Leiten <nickleiten@gmail.com>"> <span class="fn">N.Leiten</span></a>
</span> changed
<a class="bz_bug_link
bz_status_NEW "
title="NEW - Asus U38N: Black screen with Radeon driver in Linux"
href="https://bugs.freedesktop.org/show_bug.cgi?id=73530">bug 73530</a>
<br>
<table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>What</th>
<th>Removed</th>
<th>Added</th>
</tr>
<tr>
<td style="text-align:right;">CC</td>
<td>
</td>
<td>nickleiten@gmail.com
</td>
</tr></table>
<p>
<div>
<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - Asus U38N: Black screen with Radeon driver in Linux"
href="https://bugs.freedesktop.org/show_bug.cgi?id=73530#c77">Comment # 77</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - Asus U38N: Black screen with Radeon driver in Linux"
href="https://bugs.freedesktop.org/show_bug.cgi?id=73530">bug 73530</a>
from <span class="vcard"><a class="email" href="mailto:nickleiten@gmail.com" title="N.Leiten <nickleiten@gmail.com>"> <span class="fn">N.Leiten</span></a>
</span></b>
<pre>Created <span class=""><a href="attachment.cgi?id=115629" name="attach_115629" title="Panel datasheet">attachment 115629</a> <a href="attachment.cgi?id=115629&action=edit" title="Panel datasheet">[details]</a></span>
Panel datasheet
At this time I managed to get working video-stream to panel, but the timings is
obviously wrong. The main problem is Spread Spectrum somehow get disabled in
reinit cycle, and not enabled, so I just removed SS management and got blinking
noise on the screen.
Also I added some delays that necessary for this panel (maybe all another needs
it too). Due to attached datasheet on page 15 we got sequence of power-on and
power-off for this panel. Interesting this is Reset interval of 500ms which is
mandatory between power-off panel and powering it back on.
Now I'm trying to figure initial PLL setings that BIOS set before OS starts,
after that I'll try to fix this behaviour. I don't fully know vesa framebuffer
initialization, but as I understand, it get values from VBIOS/default BIOS
address space for VGA and trying to apply them. Moreover, when radeon KMS is
off I got fully different values of Modeline comparing to EDID.</pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are the assignee for the bug.</li>
</ul>
</body>
</html>