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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 - blank screen on rx580 starting with kernel 4.19.9"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=109122">109122</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>blank screen on rx580 starting with kernel 4.19.9
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>DRI
          </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>critical
          </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@lists.freedesktop.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>velemas@gmail.com
          </td>
        </tr></table>
      <p>
        <div>
        <pre>After upgrading to kernel 4.19.9 in Arch Linux I have a blank screen. The
system is unusable.

My system is Asus ROG GL702ZC with RX 580:

lspci output:
description: VGA compatible controller
product: Ellesmere [Radeon RX 470/480/570/570X/580/580X]
vendor: Advanced Micro Devices, Inc. [AMD/ATI]
physical id: 0
bus info: pci@0000:0c:00.0
version: c1
width: 64 bits
clock: 33MHz
capabilities: vga_controller bus_master cap_list rom
configuration: driver=amdgpu latency=0

dmesg:
[drm] initializing kernel modesetting (POLARIS10 0x1002:0x67DF 0x1043:0x1A60
0xC1).

The culprit is
<a href="https://github.com/torvalds/linux/commit/07e3a1cfb0568b6d8d7862077029af96af6690ea">https://github.com/torvalds/linux/commit/07e3a1cfb0568b6d8d7862077029af96af6690ea</a>

Reverting it fixed the issue. I also tried 4.20-rc7. There is no issue there.
But 4.19.11 still has it.

Setting amdgpu.dc=0 also helps with 4.19.9 - 4.19.11

Related <a href="https://bugs.archlinux.org/task/61117">https://bugs.archlinux.org/task/61117</a></pre>
        </div>
      </p>


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