<html>
<head>
<base href="https://bugs.freedesktop.org/">
</head>
<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - AMDGPU Tonga only does 2560x1440 at 120hz, switching to 144hz causes display errors, same thing used to happen with fglrx."
href="https://bugs.freedesktop.org/show_bug.cgi?id=96868">96868</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>AMDGPU Tonga only does 2560x1440 at 120hz, switching to 144hz causes display errors, same thing used to happen with fglrx.
</td>
</tr>
<tr>
<th>Product</th>
<td>xorg
</td>
</tr>
<tr>
<th>Version</th>
<td>7.7 (2012.06)
</td>
</tr>
<tr>
<th>Hardware</th>
<td>x86-64 (AMD64)
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux (All)
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>major
</td>
</tr>
<tr>
<th>Priority</th>
<td>medium
</td>
</tr>
<tr>
<th>Component</th>
<td>Driver/AMDgpu
</td>
</tr>
<tr>
<th>Assignee</th>
<td>xorg-driver-ati@lists.x.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>almoped@gmail.com
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>xorg-team@lists.x.org
</td>
</tr></table>
<p>
<div>
<pre>Using the opensource AMDgpu driver with an AMD R9 380 on a Benq XL2730Z causes
major display corruption when set to native resolution and a 144hz refresh
rate.
The same problem used to occur with fglrx, but had been fixed recently.
On the, now working, fglrx system xvidtune shows the modeline:
"2560x1440" 586.00 2560 2568 2600 2640 1440 1465 1473 1543 +hsync -vsync
Running xvidtune on the AMDgpu system shows the exact same current modeline.
Only this time the screen flickers constantly and just the top ~13% of the
screen is somewhat visible, every line below is unstable, interlaced,
corrupted.
Setting the display to 120hz gives a modeline:
"2560x1440" 482.64 2560 2568 2600 2640 1440 1447 1455 1525 +hsync -vsync
And seems to work just fine. The same goes for 100 and 60Hz.</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>