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      <base href="https://bugs.freedesktop.org/">
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    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Suspending AIGLX clients for VT switch when Radeon is configred"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=97850">97850</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Suspending AIGLX clients for VT switch when Radeon is configred
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>xorg
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>unspecified
          </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>normal
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>medium
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>Driver/Radeon
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>xorg-driver-ati@lists.x.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>abby8050@gmail.com
          </td>
        </tr>

        <tr>
          <th>QA Contact</th>
          <td>xorg-team@lists.x.org
          </td>
        </tr></table>
      <p>
        <div>
        <pre>uname -a
Linux 3820TG 4.4.6-gentoo #4 SMP Mon Sep 19 03:38:26 CST 2016 x86_64 Intel(R)
Core(TM) i3 CPU M 370 @ 2.40GHz GenuineIntel GNU/Linux

equery l xorg-server
[IP-] [  ] x11-base/xorg-server-1.17.4:0/1.17.4

 equery l ati-drivers
[IP-] [  ] x11-drivers/ati-drivers-15.9-r1:1

equery l xorg-drivers                                                           
[IP-] [  ] x11-base/xorg-drivers-1.17:0   

It's reproducible that open a black screen with a flickering underscore when
/etc/init.d/xdm starts using radeon driver.

Here is /var/log/Xorg.0.log
<a href="https://bpaste.net/show/3d79333cd7a9">https://bpaste.net/show/3d79333cd7a9</a>

Here is /var/log/sddm.log
<a href="https://bpaste.net/show/a5603d7ba3ac">https://bpaste.net/show/a5603d7ba3ac</a>


Here is /etc/X11/xorg.conf

Section "ServerLayout" 
   Identifier   "Default Layout" 
   Option   "ignoreABI"   "1"    
EndSection 

Section   "Monitor" 
   Identifier   "Default Monitor" 
EndSection 

Section "Device" 
   Identifier   "Radeon" 
   Driver   "radeon" 
   #Option   "AccelMethod"   "glamor" 
   #Option   "DRI" "2" 
   #Option   "TearFree" "on" 
   BusID   "PCI:02:00:0" 
EndSection 

Section "Screen" 
   Identifier "Default Screen" 
   Monitor   "Default Monitor" 
   Device "Radeon" 
EndSection

Here is dmesg
<a href="https://bpaste.net/show/f4f499696294">https://bpaste.net/show/f4f499696294</a>

Here is lsmod
<a href="https://bpaste.net/show/dd851eee28b5">https://bpaste.net/show/dd851eee28b5</a>

Here is lspci | grep VGA
<a href="https://bpaste.net/show/2c203259714e">https://bpaste.net/show/2c203259714e</a>

Here is /usr/src/linux/.config
<a href="https://bpaste.net/show/81e880c35864">https://bpaste.net/show/81e880c35864</a></pre>
        </div>
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