From mboxrd@z Thu Jan  1 00:00:00 1970
From: bugzilla-daemon@freedesktop.org
Subject: [Bug 106639] System display has noise when amdgpu module is being
 loaded
Date: Thu, 24 May 2018 07:41:16 +0000
Message-ID: <bug-106639-502@http.bugs.freedesktop.org/>
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--15271476770.bAbf4.26330
Date: Thu, 24 May 2018 07:41:16 +0000
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X-Bugzilla-URL: http://bugs.freedesktop.org/
Auto-Submitted: auto-generated

https://bugs.freedesktop.org/show_bug.cgi?id=3D106639

            Bug ID: 106639
           Summary: System display has noise when amdgpu module is being
                    loaded
           Product: DRI
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/AMDgpu
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: jian-hong@endlessm.com

Created attachment 139732
  --> https://bugs.freedesktop.org/attachment.cgi?id=3D139732&action=3Dedit
Noise on the display

This is found on the laptop equipped with AMD A4-9120 RADEON R3, 4 COMPUTE
CORES 2C+2G.  It is seen between BIOS log and Display manager.

To make sure the timing, I have tried with Linux kernel 4.17-rc6.  And boot
with parameters "systemd.unit=3Dmulti-user.target modprobe.blacklist=3Damdp=
gu"
which makes system boot into command line mode and blacklist the amdgpu mod=
ule.
 The noise does not appear during the processes.

However, when I load amdgpu module manually with "sudo modprobe amdgpu", the
noise appears on the screen and then system goes back to normal console.  T=
his
also happens in Linux kernel 4.16.

Here is the part of dmesg when amdgpu module is being loaded:

[  106.885251] [drm] amdgpu kernel modesetting enabled.
[  106.886731] checking generic (e0000000 420000) vs hw (e0000000 10000000)
[  106.886733] fb: switching to amdgpudrmfb from EFI VGA
[  106.888154] Console: switching to colour dummy device 80x25
[  106.888710] [drm] initializing kernel modesetting (STONEY 0x1002:0x98E4
0x1025:0x1192 0xE2).
[  106.888747] [drm] register mmio base: 0xF0C00000
[  106.888750] [drm] register mmio size: 262144
[  106.888773] [drm] add ip block number 0 <vi_common>
[  106.888776] [drm] add ip block number 1 <gmc_v8_0>
[  106.888780] [drm] add ip block number 2 <cz_ih>
[  106.888783] [drm] add ip block number 3 <powerplay>
[  106.888787] [drm] add ip block number 4 <dm>
[  106.888790] [drm] add ip block number 5 <gfx_v8_0>
[  106.888793] [drm] add ip block number 6 <sdma_v3_0>
[  106.888796] [drm] add ip block number 7 <uvd_v6_0>
[  106.888799] [drm] add ip block number 8 <vce_v3_0>
[  106.888802] [drm] add ip block number 9 <acp_ip>
[  106.888818] [drm] UVD is enabled in physical mode
[  106.888822] [drm] VCE enabled in VM mode
[  106.888864] ATOM BIOS: SWBRT19987.001
[  106.888922] [drm] vm size is 64 GB, 2 levels, block size is 10-bit, frag=
ment
size is 9-bit
[  106.888935] amdgpu 0000:00:01.0: VRAM: 384M 0x000000F400000000 -
0x000000F417FFFFFF (384M used)
[  106.888940] amdgpu 0000:00:01.0: GTT: 1024M 0x0000000000000000 -
0x000000003FFFFFFF
[  106.888951] [drm] Detected VRAM RAM=3D384M, BAR=3D384M
[  106.888955] [drm] RAM width 64bits UNKNOWN
[  106.889041] [TTM] Zone  kernel: Available graphics memory: 2870386 kiB
[  106.889045] [TTM] Zone   dma32: Available graphics memory: 2097152 kiB
[  106.889049] [TTM] Initializing pool allocator
[  106.889058] [TTM] Initializing DMA pool allocator
[  106.889136] [drm] amdgpu: 384M of VRAM memory ready
[  106.889141] [drm] amdgpu: 3072M of GTT memory ready.
[  106.889160] [drm] GART: num cpu pages 262144, num gpu pages 262144
[  106.890219] [drm] PCIE GART of 1024M enabled (table at 0x000000F40004000=
0).
[  106.921115] [drm] Found UVD firmware Version: 1.38 Family ID: 15
[  106.921151] [drm] UVD ENC is disabled
[  106.928184] [drm] Found VCE firmware Version: 52.0 Binary ID: 3
[  106.955239] [drm] DM_PPLIB: values for Engine clock
[  106.955250] [drm] DM_PPLIB:   20000
[  106.955253] [drm] DM_PPLIB:   30000
[  106.955255] [drm] DM_PPLIB:   40000
[  106.955257] [drm] DM_PPLIB:   46452
[  106.955259] [drm] DM_PPLIB:   51429
[  106.955261] [drm] DM_PPLIB:   57600
[  106.955263] [drm] DM_PPLIB:   62609
[  106.955265] [drm] DM_PPLIB:   65455
[  106.955267] [drm] DM_PPLIB: Validation clocks:
[  106.955270] [drm] DM_PPLIB:    engine_max_clock: 65455
[  106.955272] [drm] DM_PPLIB:    memory_max_clock: 80000
[  106.955274] [drm] DM_PPLIB:    level           : 0
[  106.955277] [drm] DM_PPLIB: values for Display clock
[  106.955280] [drm] DM_PPLIB:   30000
[  106.955282] [drm] DM_PPLIB:   40000
[  106.955284] [drm] DM_PPLIB:   49656
[  106.955285] [drm] DM_PPLIB:   62609
[  106.955287] [drm] DM_PPLIB:   68572
[  106.955289] [drm] DM_PPLIB:   75790
[  106.955291] [drm] DM_PPLIB:   80000
[  106.955293] [drm] DM_PPLIB:   84706
[  106.955295] [drm] DM_PPLIB: Validation clocks:
[  106.955297] [drm] DM_PPLIB:    engine_max_clock: 65455
[  106.955299] [drm] DM_PPLIB:    memory_max_clock: 80000
[  106.955302] [drm] DM_PPLIB:    level           : 0
[  106.955304] [drm] DM_PPLIB: values for Memory clock
[  106.955306] [drm] DM_PPLIB:   66700
[  106.955308] [drm] DM_PPLIB:   80000
[  106.955310] [drm] DM_PPLIB: Validation clocks:
[  106.955312] [drm] DM_PPLIB:    engine_max_clock: 65455
[  106.955314] [drm] DM_PPLIB:    memory_max_clock: 80000
[  106.955317] [drm] DM_PPLIB:    level           : 0
[  107.270853] [drm:hwss_wait_for_blank_complete [amdgpu]] *ERROR* DC: fail=
ed
to blank crtc!
[  107.270893] [drm] Display Core initialized with v3.1.38!
[  107.292567] [drm] SADs count is: -2, don't need to read it
[  107.293576] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[  107.293588] [drm] Driver supports precise vblank timestamp query.
[  108.322298] [drm] UVD initialized successfully.
[  108.423218] [drm] VCE initialized successfully.
[  108.930784] [drm] fb mappable at 0x1874A7000
[  108.930794] [drm] vram apper at 0x187000000
[  108.930797] [drm] size 4325376
[  108.930800] [drm] fb depth is 24
[  108.930802] [drm]    pitch is 5632
[  108.930932] fbcon: amdgpudrmfb (fb0) is primary device
[  109.052742] Console: switching to colour frame buffer device 170x48
[  109.071709] amdgpu 0000:00:01.0: fb0: amdgpudrmfb frame buffer device
[  109.076266] [drm] Initialized amdgpu 3.25.0 20150101 for 0000:00:01.0 on
minor 0
[  109.076718] modprobe (2992) used greatest stack depth: 11048 bytes left

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

--15271476770.bAbf4.26330
Date: Thu, 24 May 2018 07:41:17 +0000
MIME-Version: 1.0
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
X-Bugzilla-URL: http://bugs.freedesktop.org/
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 - System display has noise when amdgpu module is being load=
ed"
   href=3D"https://bugs.freedesktop.org/show_bug.cgi?id=3D106639">106639</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>System display has noise when amdgpu module is being loaded
          </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>normal
          </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>jian-hong&#64;endlessm.com
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Created <span class=3D""><a href=3D"attachment.cgi?id=3D139732=
" name=3D"attach_139732" title=3D"Noise on the display">attachment 139732</=
a> <a href=3D"attachment.cgi?id=3D139732&amp;action=3Dedit" title=3D"Noise =
on the display">[details]</a></span>
Noise on the display

This is found on the laptop equipped with AMD A4-9120 RADEON R3, 4 COMPUTE
CORES 2C+2G.  It is seen between BIOS log and Display manager.

To make sure the timing, I have tried with Linux kernel 4.17-rc6.  And boot
with parameters &quot;systemd.unit=3Dmulti-user.target modprobe.blacklist=
=3Damdpgu&quot;
which makes system boot into command line mode and blacklist the amdgpu mod=
ule.
 The noise does not appear during the processes.

However, when I load amdgpu module manually with &quot;sudo modprobe amdgpu=
&quot;, the
noise appears on the screen and then system goes back to normal console.  T=
his
also happens in Linux kernel 4.16.

Here is the part of dmesg when amdgpu module is being loaded:

[  106.885251] [drm] amdgpu kernel modesetting enabled.
[  106.886731] checking generic (e0000000 420000) vs hw (e0000000 10000000)
[  106.886733] fb: switching to amdgpudrmfb from EFI VGA
[  106.888154] Console: switching to colour dummy device 80x25
[  106.888710] [drm] initializing kernel modesetting (STONEY 0x1002:0x98E4
0x1025:0x1192 0xE2).
[  106.888747] [drm] register mmio base: 0xF0C00000
[  106.888750] [drm] register mmio size: 262144
[  106.888773] [drm] add ip block number 0 &lt;vi_common&gt;
[  106.888776] [drm] add ip block number 1 &lt;gmc_v8_0&gt;
[  106.888780] [drm] add ip block number 2 &lt;cz_ih&gt;
[  106.888783] [drm] add ip block number 3 &lt;powerplay&gt;
[  106.888787] [drm] add ip block number 4 &lt;dm&gt;
[  106.888790] [drm] add ip block number 5 &lt;gfx_v8_0&gt;
[  106.888793] [drm] add ip block number 6 &lt;sdma_v3_0&gt;
[  106.888796] [drm] add ip block number 7 &lt;uvd_v6_0&gt;
[  106.888799] [drm] add ip block number 8 &lt;vce_v3_0&gt;
[  106.888802] [drm] add ip block number 9 &lt;acp_ip&gt;
[  106.888818] [drm] UVD is enabled in physical mode
[  106.888822] [drm] VCE enabled in VM mode
[  106.888864] ATOM BIOS: SWBRT19987.001
[  106.888922] [drm] vm size is 64 GB, 2 levels, block size is 10-bit, frag=
ment
size is 9-bit
[  106.888935] amdgpu 0000:00:01.0: VRAM: 384M 0x000000F400000000 -
0x000000F417FFFFFF (384M used)
[  106.888940] amdgpu 0000:00:01.0: GTT: 1024M 0x0000000000000000 -
0x000000003FFFFFFF
[  106.888951] [drm] Detected VRAM RAM=3D384M, BAR=3D384M
[  106.888955] [drm] RAM width 64bits UNKNOWN
[  106.889041] [TTM] Zone  kernel: Available graphics memory: 2870386 kiB
[  106.889045] [TTM] Zone   dma32: Available graphics memory: 2097152 kiB
[  106.889049] [TTM] Initializing pool allocator
[  106.889058] [TTM] Initializing DMA pool allocator
[  106.889136] [drm] amdgpu: 384M of VRAM memory ready
[  106.889141] [drm] amdgpu: 3072M of GTT memory ready.
[  106.889160] [drm] GART: num cpu pages 262144, num gpu pages 262144
[  106.890219] [drm] PCIE GART of 1024M enabled (table at 0x000000F40004000=
0).
[  106.921115] [drm] Found UVD firmware Version: 1.38 Family ID: 15
[  106.921151] [drm] UVD ENC is disabled
[  106.928184] [drm] Found VCE firmware Version: 52.0 Binary ID: 3
[  106.955239] [drm] DM_PPLIB: values for Engine clock
[  106.955250] [drm] DM_PPLIB:   20000
[  106.955253] [drm] DM_PPLIB:   30000
[  106.955255] [drm] DM_PPLIB:   40000
[  106.955257] [drm] DM_PPLIB:   46452
[  106.955259] [drm] DM_PPLIB:   51429
[  106.955261] [drm] DM_PPLIB:   57600
[  106.955263] [drm] DM_PPLIB:   62609
[  106.955265] [drm] DM_PPLIB:   65455
[  106.955267] [drm] DM_PPLIB: Validation clocks:
[  106.955270] [drm] DM_PPLIB:    engine_max_clock: 65455
[  106.955272] [drm] DM_PPLIB:    memory_max_clock: 80000
[  106.955274] [drm] DM_PPLIB:    level           : 0
[  106.955277] [drm] DM_PPLIB: values for Display clock
[  106.955280] [drm] DM_PPLIB:   30000
[  106.955282] [drm] DM_PPLIB:   40000
[  106.955284] [drm] DM_PPLIB:   49656
[  106.955285] [drm] DM_PPLIB:   62609
[  106.955287] [drm] DM_PPLIB:   68572
[  106.955289] [drm] DM_PPLIB:   75790
[  106.955291] [drm] DM_PPLIB:   80000
[  106.955293] [drm] DM_PPLIB:   84706
[  106.955295] [drm] DM_PPLIB: Validation clocks:
[  106.955297] [drm] DM_PPLIB:    engine_max_clock: 65455
[  106.955299] [drm] DM_PPLIB:    memory_max_clock: 80000
[  106.955302] [drm] DM_PPLIB:    level           : 0
[  106.955304] [drm] DM_PPLIB: values for Memory clock
[  106.955306] [drm] DM_PPLIB:   66700
[  106.955308] [drm] DM_PPLIB:   80000
[  106.955310] [drm] DM_PPLIB: Validation clocks:
[  106.955312] [drm] DM_PPLIB:    engine_max_clock: 65455
[  106.955314] [drm] DM_PPLIB:    memory_max_clock: 80000
[  106.955317] [drm] DM_PPLIB:    level           : 0
[  107.270853] [drm:hwss_wait_for_blank_complete [amdgpu]] *ERROR* DC: fail=
ed
to blank crtc!
[  107.270893] [drm] Display Core initialized with v3.1.38!
[  107.292567] [drm] SADs count is: -2, don't need to read it
[  107.293576] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[  107.293588] [drm] Driver supports precise vblank timestamp query.
[  108.322298] [drm] UVD initialized successfully.
[  108.423218] [drm] VCE initialized successfully.
[  108.930784] [drm] fb mappable at 0x1874A7000
[  108.930794] [drm] vram apper at 0x187000000
[  108.930797] [drm] size 4325376
[  108.930800] [drm] fb depth is 24
[  108.930802] [drm]    pitch is 5632
[  108.930932] fbcon: amdgpudrmfb (fb0) is primary device
[  109.052742] Console: switching to colour frame buffer device 170x48
[  109.071709] amdgpu 0000:00:01.0: fb0: amdgpudrmfb frame buffer device
[  109.076266] [drm] Initialized amdgpu 3.25.0 20150101 for 0000:00:01.0 on
minor 0
[  109.076718] modprobe (2992) used greatest stack depth: 11048 bytes left<=
/pre>
        </div>
      </p>


      <hr>
      <span>You are receiving this mail because:</span>

      <ul>
          <li>You are the assignee for the bug.</li>
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