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<base href="https://bugs.freedesktop.org/">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [REGRESSION, bisected] KMS hard-freezes around fbcon initialization on NV1A"
href="https://bugs.freedesktop.org/show_bug.cgi?id=99499">99499</a>
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<th>Summary</th>
<td>[REGRESSION, bisected] KMS hard-freezes around fbcon initialization on NV1A
</td>
</tr>
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<th>Product</th>
<td>DRI
</td>
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<th>Version</th>
<td>unspecified
</td>
</tr>
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<th>Hardware</th>
<td>x86 (IA32)
</td>
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<th>OS</th>
<td>Linux (All)
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>medium
</td>
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<th>Component</th>
<td>DRM/other
</td>
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<tr>
<th>Assignee</th>
<td>dri-devel@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>bonbons@sysophe.eu
</td>
</tr></table>
<p>
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<pre>Created <span class=""><a href="attachment.cgi?id=129101" name="attach_129101" title="Kernel config for regression area">attachment 129101</a> <a href="attachment.cgi?id=129101&action=edit" title="Kernel config for regression area">[details]</a></span>
Kernel config for regression area
Kernel 4.2 works fine while 4.3 and later fail by freezing hard.
On failure the last kernel message output via netconsole is:
nouveau 0000:02:00.0: DRM: allocated 1920x1080 fb: 0x4000, bo dd258000
Bisected as follow:
git bisect start 'drivers/gpu/drm/'
# bad: [34cdc49bf8ea385c1b3039be72cf91f98ddf8bbc] sd: Stop disks on reboot
git bisect bad 34cdc49bf8ea385c1b3039be72cf91f98ddf8bbc
# good: [64291f7db5bd8150a74ad2036f1037e6a0428df2] Linux 4.2
git bisect good 64291f7db5bd8150a74ad2036f1037e6a0428df2
# good: [0b2daf09cf3c9893872d68f0ce9a3f4b7e3ff06c] drm/amdgpu: add some common
definitions to amd_shared.h
git bisect good 0b2daf09cf3c9893872d68f0ce9a3f4b7e3ff06c
# good: [a1bfb29a33521efa6b1714589bf68cb4afebacb1] drm/nouveau/device: split
user device implementation out on its own
git bisect good a1bfb29a33521efa6b1714589bf68cb4afebacb1
# bad: [73bf1b7be7aab60d7c651402441dd0b0b4991098] Merge branch 'drm-next-4.3'
of git://people.freedesktop.org/~agd5f/linux into drm-next
git bisect bad 73bf1b7be7aab60d7c651402441dd0b0b4991098
# bad: [ae0a5b2dd2f54584d677701d989732b464b6d8c9] drm/nouveau/mc/gf100-: handle
second interrupt tree
git bisect bad ae0a5b2dd2f54584d677701d989732b464b6d8c9
# good: [0710cc31482ae3711367c42e61580126c50c8ec0] drm/nouveau/dma: convert
user classes to new-style nvkm_object
git bisect good 0710cc31482ae3711367c42e61580126c50c8ec0
# good: [8de65bd0901e2ee7a485a158bfe9e4631cc00644] drm/nouveau/devinit: run
devinit scripts right after preinit
git bisect good 8de65bd0901e2ee7a485a158bfe9e4631cc00644
# good: [e5b31ca63249f03e56529dcd4260b23196ce2c28] drm/nouveau/ce: convert to
new-style nvkm_engine
git bisect good e5b31ca63249f03e56529dcd4260b23196ce2c28
# bad: [97070f23c60869830039b216ff88230f54ef7107] drm/nouveau/pm: convert to
new-style nvkm_engine
git bisect bad 97070f23c60869830039b216ff88230f54ef7107
# good: [70aa8670e5229766f12c4b818a68aa61913df0b6] drm/nouveau/disp: convert to
new-style nvkm_engine
git bisect good 70aa8670e5229766f12c4b818a68aa61913df0b6
# bad: [c85ee6ca79590cd51356bf24fb8936bc352138cf] drm/nouveau/gr: convert to
new-style nvkm_engine
git bisect bad c85ee6ca79590cd51356bf24fb8936bc352138cf
# good: [13de7f462902d1a452d501cdb2d06ef02cabbfff] drm/nouveau/fifo: convert to
new-style nvkm_engine
git bisect good 13de7f462902d1a452d501cdb2d06ef02cabbfff
# first bad commit: [c85ee6ca79590cd51356bf24fb8936bc352138cf] drm/nouveau/gr:
convert to new-style nvkm_engine</pre>
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