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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 - i915 warning: WARN_ON_ONCE(!intel_dp->lane_count)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=99655">99655</a>
</td>
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<th>Summary</th>
<td>i915 warning: WARN_ON_ONCE(!intel_dp->lane_count)
</td>
</tr>
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<th>Product</th>
<td>DRI
</td>
</tr>
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<th>Version</th>
<td>DRI git
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Other
</td>
</tr>
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<th>OS</th>
<td>All
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>medium
</td>
</tr>
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<th>Component</th>
<td>DRM/Intel
</td>
</tr>
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<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>manasi.d.navare@intel.com
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr></table>
<p>
<div>
<pre>[drm] Initialized i915 1.6.0 20161121 for 0000:00:02.0 on minor 0
<span class="quote">> > ------------[ cut here ]------------
> > WARNING: CPU: 1 PID: 130 at drivers/gpu/drm/i915/intel_dp.c:4018
> > intel_dp_check_link_status+0x1db$
> > WARN_ON_ONCE(!intel_dp->lane_count)
> > Modules linked in:
> > rtsx_pci_sdmmc mmc_core crct10dif_pclmul crc32_pclmul
> > crc32c_intel
> > i915 ghash_clmulni_intel i2c_$
> > CPU: 1 PID: 130 Comm: kworker/u8:7 Not tainted
> > 4.9.0-04822-g9439b3710df6
> > #6
> > Hardware name: Dell Inc. XPS 13 9350/09JHRY, BIOS 1.4.4 06/14/2016
> > Workqueue: events_unbound async_run_entry_fn
> > Call Trace:
> > intel_dp_check_link_status+0x1db/0x200 [i915]
> > intel_dp_detect+0x697/0xa40 [i915]
> > drm_helper_probe_single_connector_modes+0x2a3/0x500
> [drm_kms_helper]
> > drm_setup_crtcs+0x7b/0x9c0 [drm_kms_helper]
> > drm_fb_helper_initial_config+0x79/0x3e0 [drm_kms_helper]
> > intel_fbdev_initial_config+0x18/0x30 [i915]
> > async_run_entry_fn+0x37/0x150
> > process_one_work+0x1f1/0x480
> > worker_thread+0x48/0x4d0
> > kthread+0x101/0x140
> > ret_from_fork+0x22/0x30
> > ---[ end trace 10162024459bbe32 ]---</span >
Bug pointed out by Linus, there is a work around added by Daniel Vetter but
this needs to be fixed.</pre>
</div>
</p>
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