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<b><a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - [dp] intel_dp.c:1554 WARN_ON(len <=8)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=103347#c36">Comment # 36</a>
on <a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - [dp] intel_dp.c:1554 WARN_ON(len <=8)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=103347">bug 103347</a>
from <span class="vcard"><a class="email" href="mailto:f.hartung@outlook.de" title="F.Hartung <f.hartung@outlook.de>"> <span class="fn">F.Hartung</span></a>
</span></b>
<pre>The patch I applied to kernel 4.16.8
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 62f82c4298ac..0f2ad4983582 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -6036,8 +6036,14 @@
return false;
intel_dp_set_source_rates(intel_dp);
-
+ intel_dp->dpcd[DP_MAX_LINK_RATE] = DP_LINK_BW_1_62;
+ intel_dp_set_sink_rates(intel_dp);
+ intel_dp_set_common_rates(intel_dp);
+
+ intel_dp->max_link_lane_count = 1;
+ intel_dp->max_link_rate = 162000;
intel_dp->reset_link_params = true;
+
intel_dp->pps_pipe = INVALID_PIPE;
intel_dp->active_pipe = INVALID_PIPE;</pre>
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