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    <head>
      <base href="https://bugs.freedesktop.org/" />
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    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Priority</th>
          <td>medium
          </td>
        </tr>

        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - Heavy artifacts and unusable graphics system with the latest DPM changes"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=66945">66945</a>
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>dri-devel@lists.freedesktop.org
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Heavy artifacts and unusable graphics system with the latest DPM changes
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>blocker
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>Linux (All)
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>tobi@slackeee.de
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>x86-64 (AMD64)
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

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

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

        <tr>
          <th>Product</th>
          <td>DRI
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Using the latest drm-fixes-3.11 and drm-next-3.11 I get heavy artifacts as soon
as the radeon module is loaded, leaving my system unusable. Only the graphics
system stops to work, SSH connections to the system still work.

Hardware: Radeon HD6870 (01:00.0 VGA compatible controller: Advanced Micro
Devices [AMD] nee ATI Barts XT [ATI Radeon HD 6800 Series])
Software: Slackware -current

I got these error messages from dmesg:
[   26.514278] radeon 0000:01:00.0: GPU lockup CP stall for more than 10000msec
[   26.514291] radeon 0000:01:00.0: GPU lockup (waiting for 0x0000000000000004
last fence id 0x0000000000000001)
[   26.649947] radeon 0000:01:00.0: Saved 119 dwords of commands on ring 0.
[   26.649969] radeon 0000:01:00.0: GPU softreset: 0x00000008
[   26.649977] radeon 0000:01:00.0:   GRBM_STATUS               = 0xA0003828
[   26.649983] radeon 0000:01:00.0:   GRBM_STATUS_SE0           = 0x00000007
[   26.649989] radeon 0000:01:00.0:   GRBM_STATUS_SE1           = 0x00000007
[   26.649994] radeon 0000:01:00.0:   SRBM_STATUS               = 0x200000C0
[   26.649999] radeon 0000:01:00.0:   SRBM_STATUS2              = 0x00000000
[   26.650004] radeon 0000:01:00.0:   R_008674_CP_STALLED_STAT1 = 0x00000000
[   26.650010] radeon 0000:01:00.0:   R_008678_CP_STALLED_STAT2 = 0x00004100
[   26.650015] radeon 0000:01:00.0:   R_00867C_CP_BUSY_STAT     = 0x00020180
[   26.650020] radeon 0000:01:00.0:   R_008680_CP_STAT          = 0x80028042
[   26.650026] radeon 0000:01:00.0:   R_00D034_DMA_STATUS_REG   = 0x44C83D57
[   26.661433] radeon 0000:01:00.0: GRBM_SOFT_RESET=0x00004001
[   26.661490] radeon 0000:01:00.0: SRBM_SOFT_RESET=0x00000100
[   26.662652] radeon 0000:01:00.0:   GRBM_STATUS               = 0x00003828
[   26.662657] radeon 0000:01:00.0:   GRBM_STATUS_SE0           = 0x00000007
[   26.662663] radeon 0000:01:00.0:   GRBM_STATUS_SE1           = 0x00000007
[   26.662668] radeon 0000:01:00.0:   SRBM_STATUS               = 0x200000C0
[   26.662673] radeon 0000:01:00.0:   SRBM_STATUS2              = 0x00000000
[   26.662679] radeon 0000:01:00.0:   R_008674_CP_STALLED_STAT1 = 0x00000000
[   26.662684] radeon 0000:01:00.0:   R_008678_CP_STALLED_STAT2 = 0x00000000
[   26.662689] radeon 0000:01:00.0:   R_00867C_CP_BUSY_STAT     = 0x00000000
[   26.662694] radeon 0000:01:00.0:   R_008680_CP_STAT          = 0x00000000
[   26.662700] radeon 0000:01:00.0:   R_00D034_DMA_STATUS_REG   = 0x44C83D57
[   26.662711] radeon 0000:01:00.0: GPU reset succeeded, trying to resume
[   26.686572] radeon 0000:01:00.0: WB enabled
[   26.686581] radeon 0000:01:00.0: fence driver on ring 0 use gpu addr
0x0000000040000c00 and cpu addr 0xffff880429b6dc00
[   26.686588] radeon 0000:01:00.0: fence driver on ring 3 use gpu addr
0x0000000040000c0c and cpu addr 0xffff880429b6dc0c
[   26.688117] radeon 0000:01:00.0: fence driver on ring 5 use gpu addr
0x0000000000072118 and cpu addr 0xffffc900112b2118
[   26.920227] [drm:r600_ring_test] *ERROR* radeon: ring 0 test failed
(scratch(0x8504)=0xCAFEDEAD)

I attach a complete dmesg output and lspci output, If anything else is needed
just ask me and I will do my best to get you the info.</pre>
        </div>
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