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<th>Priority</th>
<td>medium
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [regression][bisected][NV4E] LVDS output has offset to the right, part falling of is painted on the left"
href="https://bugs.freedesktop.org/show_bug.cgi?id=57988">57988</a>
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<th>Assignee</th>
<td>nouveau@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Summary</th>
<td>[regression][bisected][NV4E] LVDS output has offset to the right, part falling of is painted on the left
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>xorg-team@lists.x.org
</td>
</tr>
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<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
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<th>OS</th>
<td>Linux (All)
</td>
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<th>Reporter</th>
<td>ronald645@gmail.com
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<th>Hardware</th>
<td>x86-64 (AMD64)
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
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<th>Version</th>
<td>git
</td>
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<th>Component</th>
<td>Driver/nouveau
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<th>Product</th>
<td>xorg
</td>
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<pre>Created <span class=""><a href="attachment.cgi?id=71137" name="attach_71137" title="Dmesg of regression: 3.7-rc8+nouveau(implement opcode 0xa9)">attachment 71137</a> <a href="attachment.cgi?id=71137&action=edit" title="Dmesg of regression: 3.7-rc8+nouveau(implement opcode 0xa9)">[details]</a></span>
Dmesg of regression: 3.7-rc8+nouveau(implement opcode 0xa9)
Commit:
767baf828498: drm/nouveau: remove some more unnecessary legacy bios code
causes a regression. Attached are dmesg logs and photographs (since the title
probably won't cut it).
Symptoms are:
- screen is dislocated to the right causing part of the screen to fall off
- the part that falls of the screen is improperly repainted on the left side,
seems like a mirror effect in that this repainting is happening twice
- upper part of the screen has a horizontal bar that is probably 1 or 2 pixels
thick. Desktop is displayed there, but it's scrambled.
This is with an 'C51 (NV4E)' chipset.
Mupuf on #nouveau mentioned removing the ' #if 0 / #endif ' parts in this
commit and see if that rebuilds. I added 'pll_limit_tbl_ptr' back to
nouveau_bios.h to make it compile. This does not help. Bug is still there. The
dmesg log 'attempt' contains the dmesg output with this modification.
Mupuf also mentioned that 'it clearly is a PLL calculation problem'. Therefore,
I also refer back to previous fdo <a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED --- - [regression][kms] Clock rework causes kms boot regression for NV4E (v3.7-rc1, 3.6+nouveau)"
href="show_bug.cgi?id=56202">bug #56202</a> . This was also related to 'PLL'
(I have no idea what it is though)...</pre>
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