From mboxrd@z Thu Jan  1 00:00:00 1970
From: bugzilla-daemon@freedesktop.org
Subject: [Bug 97730] Monitor not recognized after upgrading to a Radeon RX 480
Date: Fri, 09 Sep 2016 17:20:13 +0000
Message-ID: <bug-97730-502@http.bugs.freedesktop.org/>
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--14734416130.C3be9a5.30765
Date: Fri, 9 Sep 2016 17:20:13 +0000
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Auto-Submitted: auto-generated

https://bugs.freedesktop.org/show_bug.cgi?id=3D97730

            Bug ID: 97730
           Summary: Monitor not recognized after upgrading to a Radeon RX
                    480
           Product: DRI
           Version: DRI git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: major
          Priority: medium
         Component: DRM/AMDgpu
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: damien@grassart.com

Created attachment 126413
  --> https://bugs.freedesktop.org/attachment.cgi?id=3D126413&action=3Dedit
/sys/class/drm/card0-DP-2/edid

I upgraded my video card from a Radeon HD 8770 to a Radeon RX 480 after whi=
ch
my monitor stopped working. I believe it is an EDID problem since dmesg
contains this repeated 4 times:

[  +0.120622] [drm:drm_edid_block_valid [drm]] *ERROR* EDID checksum is
invalid, remainder is 128
[  +0.000011] Raw EDID:
[  +0.000005]   ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[  +0.000004]   ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[  +0.000005]   ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[  +0.000004]   ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[  +0.000005]   ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[  +0.000005]   ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[  +0.000004]   ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[  +0.000005]   ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff

As well as:

[  +0.000005] amdgpu 0000:01:00.0: DP-2: Ignoring invalid EDID block 1.
[  +0.149608] amdgpu 0000:01:00.0: No connectors reported connected with mo=
des

xrandr shows this error message when I run it: "xrandr: Output DisplayPort-=
1 is
not disconnected but has no modes".

I can actually get the monitor working by manually adding a mode:

$ cvt 2560 1440
# 2560x1440 59.96 Hz (CVT 3.69M9) hsync: 89.52 kHz; pclk: 312.25 MHz
Modeline "2560x1440_60.00"  312.25  2560 2752 3024 3488  1440 1443 1448 1493
-hsync +vsync
$ xrandr --newmode "2560x1440" 312.25  2560 2752 3024 3488  1440 1443 1448 =
1493
-hsync +vsync
$ xrandr --addmode DisplayPort-1 2560x1440

I've attached the /sys/class/drm/card0-DP-2/edid file if that is helpful.
Please let me know if I can provide anything else.

--=20
You are receiving this mail because:
You are the assignee for the bug.=

--14734416130.C3be9a5.30765
Date: Fri, 9 Sep 2016 17:20:13 +0000
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Auto-Submitted: auto-generated

<html>
    <head>
      <base href=3D"https://bugs.freedesktop.org/">
    </head>
    <body><table border=3D"1" cellspacing=3D"0" cellpadding=3D"8">
        <tr>
          <th>Bug ID</th>
          <td><a class=3D"bz_bug_link=20
          bz_status_NEW "
   title=3D"NEW - Monitor not recognized after upgrading to a Radeon RX 480"
   href=3D"https://bugs.freedesktop.org/show_bug.cgi?id=3D97730">97730</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Monitor not recognized after upgrading to a Radeon RX 480
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>DRI
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>DRI git
          </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>major
          </td>
        </tr>

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

        <tr>
          <th>Component</th>
          <td>DRM/AMDgpu
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>dri-devel&#64;lists.freedesktop.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>damien&#64;grassart.com
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Created <span class=3D""><a href=3D"attachment.cgi?id=3D126413=
" name=3D"attach_126413" title=3D"/sys/class/drm/card0-DP-2/edid">attachmen=
t 126413</a> <a href=3D"attachment.cgi?id=3D126413&amp;action=3Dedit" title=
=3D"/sys/class/drm/card0-DP-2/edid">[details]</a></span>
/sys/class/drm/card0-DP-2/edid

I upgraded my video card from a Radeon HD 8770 to a Radeon RX 480 after whi=
ch
my monitor stopped working. I believe it is an EDID problem since dmesg
contains this repeated 4 times:

[  +0.120622] [drm:drm_edid_block_valid [drm]] *ERROR* EDID checksum is
invalid, remainder is 128
[  +0.000011] Raw EDID:
[  +0.000005]   ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[  +0.000004]   ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[  +0.000005]   ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[  +0.000004]   ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[  +0.000005]   ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[  +0.000005]   ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[  +0.000004]   ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[  +0.000005]   ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff

As well as:

[  +0.000005] amdgpu 0000:01:00.0: DP-2: Ignoring invalid EDID block 1.
[  +0.149608] amdgpu 0000:01:00.0: No connectors reported connected with mo=
des

xrandr shows this error message when I run it: &quot;xrandr: Output Display=
Port-1 is
not disconnected but has no modes&quot;.

I can actually get the monitor working by manually adding a mode:

$ cvt 2560 1440
# 2560x1440 59.96 Hz (CVT 3.69M9) hsync: 89.52 kHz; pclk: 312.25 MHz
Modeline &quot;2560x1440_60.00&quot;  312.25  2560 2752 3024 3488  1440 144=
3 1448 1493
-hsync +vsync
$ xrandr --newmode &quot;2560x1440&quot; 312.25  2560 2752 3024 3488  1440 =
1443 1448 1493
-hsync +vsync
$ xrandr --addmode DisplayPort-1 2560x1440

I've attached the /sys/class/drm/card0-DP-2/edid file if that is helpful.
Please let me know if I can provide anything else.</pre>
        </div>
      </p>


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