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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [NVE7] bus: MMIO write of FAULT at [ IBUS ], Pointer to {TDMS,flat panel) table invalid"
href="https://bugs.freedesktop.org/show_bug.cgi?id=98386">98386</a>
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<th>Summary</th>
<td>[NVE7] bus: MMIO write of FAULT at [ IBUS ], Pointer to {TDMS,flat panel) table invalid
</td>
</tr>
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<th>Product</th>
<td>xorg
</td>
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>x86-64 (AMD64)
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<th>OS</th>
<td>Linux (All)
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>minor
</td>
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<th>Priority</th>
<td>medium
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<th>Component</th>
<td>Driver/nouveau
</td>
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<th>Assignee</th>
<td>nouveau@lists.freedesktop.org
</td>
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<th>Reporter</th>
<td>bruno.pagani@ens-lyon.org
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<th>QA Contact</th>
<td>xorg-team@lists.x.org
</td>
</tr></table>
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<pre>Hi, following <a href="https://bugzilla.freedesktop.org/show_bug.cgi?id=70354">https://bugzilla.freedesktop.org/show_bug.cgi?id=70354</a>, I’m still
having some error messages in dmesg.
This is on first loading:
[ 454.756165] MXM: GUID detected in BIOS
[ 454.756253] ACPI Warning: \_SB.PCI0.PEG0.PEGP._DSM: Argument #4 type
mismatch - Found [Buffer], ACPI requires [Package] (20160422/nsarguments-95)
[ 454.756309] ACPI Warning: \_SB.PCI0.PEG0.PEGP._DSM: Argument #4 type
mismatch - Found [Buffer], ACPI requires [Package] (20160422/nsarguments-95)
[ 454.756430] pci 0000:02:00.0: optimus capabilities: enabled, status dynamic
power, hda bios codec supported
[ 454.756432] VGA switcheroo: detected Optimus DSM method \_SB_.PCI0.PEG0.PEGP
handle
[ 454.756433] nouveau: detected PR support, will not use DSM
[ 454.756510] nouveau 0000:02:00.0: NVIDIA GK107 (0e7240a2)
[ 454.775702] nouveau 0000:02:00.0: bios: version 80.07.b3.00.21
[ 454.919182] nouveau 0000:02:00.0: fb: 2048 MiB GDDR5
[ 454.919271] nouveau 0000:02:00.0: bus: MMIO write of 00000002 FAULT at
4188ac [ IBUS ]
[ 454.989821] vga_switcheroo: enabled
[ 454.989938] [TTM] Zone kernel: Available graphics memory: 8169036 kiB
[ 454.989939] [TTM] Zone dma32: Available graphics memory: 2097152 kiB
[ 454.989940] [TTM] Initializing pool allocator
[ 454.989943] [TTM] Initializing DMA pool allocator
[ 454.989951] nouveau 0000:02:00.0: DRM: VRAM: 2048 MiB
[ 454.989951] nouveau 0000:02:00.0: DRM: GART: 1048576 MiB
[ 454.989954] nouveau 0000:02:00.0: DRM: Pointer to TMDS table invalid
[ 454.989956] nouveau 0000:02:00.0: DRM: DCB version 4.0
[ 454.989957] nouveau 0000:02:00.0: DRM: Pointer to flat panel table invalid
[ 455.191639] nouveau 0000:02:00.0: DRM: MM: using COPY for buffer copies
[ 455.191647] [drm] Initialized nouveau 1.3.1 20120801 for 0000:02:00.0 on
minor 1
[ 460.192102] nouveau 0000:02:00.0: DRM: evicting buffers...
[ 460.192107] nouveau 0000:02:00.0: DRM: waiting for kernel channels to go
idle...
[ 460.192139] nouveau 0000:02:00.0: DRM: suspending client object trees...
[ 460.198135] nouveau 0000:02:00.0: DRM: suspending kernel object tree...
Note the following lines (that appear in red in my console):
[ 454.919271] nouveau 0000:02:00.0: bus: MMIO write of 00000002 FAULT at
4188ac [ IBUS ]
[ 454.989954] nouveau 0000:02:00.0: DRM: Pointer to TMDS table invalid
[ 454.989957] nouveau 0000:02:00.0: DRM: Pointer to flat panel table invalid
And then, on subsequent uses of the card:
[ 470.170765] nouveau 0000:02:00.0: DRM: resuming kernel object tree...
[ 470.245180] nouveau 0000:02:00.0: bus: MMIO write of ffffff1f FAULT at
6013d4 [ IBUS ]
[ 470.266559] nouveau 0000:02:00.0: DRM: resuming client object trees...
[ 476.071701] nouveau 0000:02:00.0: DRM: evicting buffers...
[ 476.071703] nouveau 0000:02:00.0: DRM: waiting for kernel channels to go
idle...
[ 476.071732] nouveau 0000:02:00.0: DRM: suspending client object trees...
[ 476.077132] nouveau 0000:02:00.0: DRM: suspending kernel object tree...
And again (can provide any amount you want, only the two hex chains change):
[ 6579.503383] nouveau 0000:02:00.0: DRM: resuming kernel object tree...
[ 6579.586496] nouveau 0000:02:00.0: bus: MMIO write of 8000001f FAULT at
6013d4 [ IBUS ]
[ 6579.607798] nouveau 0000:02:00.0: DRM: resuming client object trees...
[ 6585.210796] nouveau 0000:02:00.0: DRM: evicting buffers...
[ 6585.210798] nouveau 0000:02:00.0: DRM: waiting for kernel channels to go
idle...
[ 6585.210825] nouveau 0000:02:00.0: DRM: suspending client object trees...
[ 6585.216211] nouveau 0000:02:00.0: DRM: suspending kernel object tree...
Not sure if it has any consequences, but since it appears in red, I supposed it
was worth reporting.</pre>
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