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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 - DRI3 + Radeon HD 7750 Screen corruption with Cinnamon"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=96960">96960</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>DRI3 + Radeon HD 7750 Screen corruption with Cinnamon
          </td>
        </tr>

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

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

        <tr>
          <th>Hardware</th>
          <td>Other
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>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>lehjr1@gmail.com
          </td>
        </tr>

        <tr>
          <th>QA Contact</th>
          <td>xorg-team@lists.x.org
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Created <span class=""><a href="attachment.cgi?id=125110" name="attach_125110" title="screenshot">attachment 125110</a> <a href="attachment.cgi?id=125110&action=edit" title="screenshot">[details]</a></span>
screenshot

I started experiencing this issue with Mint 18, with the Oibaf ppa enabled.
Mint ships with xserver-xorg-video-ati 1:7.7.0-1, so I was able to track down
the issue from there using the source from the official repo. I traced it back
to commit 1181b9c582f10b6c523e4b2988e2ce87ecf3d367 but as far as I can tell,
this commit pretty much just enables DRI3 on this device:
( xserver-xorg-video-ati 1:7.7.0-1)
[  9837.338] (==) RADEON(0): DRI3 disabled

( xserver-xorg-video-ati 1181b9c582f10b6c523e4b2988e2ce87ecf3d367)
[  4355.160] (==) RADEON(0): DRI3 enabled


dmesg shows errors like <a class="bz_bug_link 
          bz_status_RESOLVED  bz_closed"
   title="RESOLVED FIXED - Display corruption due to deferred fbcon pixmap pitch calculation in radeon_set_pixmap_bo"
   href="show_bug.cgi?id=94901">https://bugs.freedesktop.org/show_bug.cgi?id=94901</a>

[   44.866600] radeon 0000:01:00.0: evergreen_surface_check_linear_aligned:215
texture pitch 1680 invalid must be aligned with 64
[   44.866604] radeon 0000:01:00.0: evergreen_cs_track_validate_texture:830
texture invalid 0x1a3c3441 0x10000419 0x0a0a0000 0x00000000 0x00000000
0x8002001a
[   44.866630] [drm:radeon_cs_ioctl [radeon]] *ERROR* Invalid command stream !

but then followed by:

[ 9837.107021] gvfsd-network[29643]: segfault at 8 ip 0000000000403fa9 sp
00007ffea7be3740 error 4 in gvfsd-network[400000+7000]
[ 9837.109294] gvfsd-network[29647]: segfault at 8 ip 0000000000403fa9 sp
00007fffd4c5a550 error 4 in gvfsd-network[400000+7000]


both of which are only present when this or future versions are installed. 

This bug is mentioned here:
<a href="https://forums.linuxmint.com/viewtopic.php?f=59&t=224526&p=1189762">https://forums.linuxmint.com/viewtopic.php?f=59&t=224526&p=1189762</a> (somehow
does not affect MATE?)
and also SEEMS to be mentioned here as well:
<a href="https://github.com/linuxmint/Cinnamon/issues/5209">https://github.com/linuxmint/Cinnamon/issues/5209</a>

I'll attach a logs in a few minutes</pre>
        </div>
      </p>


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