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<body><span class="vcard"><a class="email" href="mailto:jani.nikula@intel.com" title="Jani Nikula <jani.nikula@intel.com>"> <span class="fn">Jani Nikula</span></a>
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<a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - [Regression] Horizontal lines on Samsung NP900X3G"
href="https://bugs.freedesktop.org/show_bug.cgi?id=106943">bug 106943</a>
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<th>What</th>
<th>Removed</th>
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<td style="text-align:right;">Status</td>
<td>NEW
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<td>NEEDINFO
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<b><a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - [Regression] Horizontal lines on Samsung NP900X3G"
href="https://bugs.freedesktop.org/show_bug.cgi?id=106943#c1">Comment # 1</a>
on <a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - [Regression] Horizontal lines on Samsung NP900X3G"
href="https://bugs.freedesktop.org/show_bug.cgi?id=106943">bug 106943</a>
from <span class="vcard"><a class="email" href="mailto:jani.nikula@intel.com" title="Jani Nikula <jani.nikula@intel.com>"> <span class="fn">Jani Nikula</span></a>
</span></b>
<pre>(In reply to Frank Winklmeier from <a href="show_bug.cgi?id=106943#c0">comment #0</a>)
<span class="quote">> For the Ubuntu 4.13.0-43 kernel, the problem is fixed after reverting the
> following 4 commits:</span >
I'm curious about the statement, because...
<span class="quote">> fd18173 Revert "drm/i915/edp: Allow alternate fixed mode for eDP if
> available."</span >
dc911f5bd8aa ("drm/i915/edp: Allow alternate fixed mode for eDP if available.")
was first introduced in v4.14.
<span class="quote">> 4fb94d0 Revert "drm/i915/dp: rename intel_dp_is_edp to intel_dp_is_port_edp"</span >
7b91bf7f9196 ("drm/i915/dp: rename intel_dp_is_edp to intel_dp_is_port_edp")
was first introduced in v4.15.
<span class="quote">> 7547d0c Revert "drm/i915/dp: make is_edp non-static and rename to
> intel_dp_is_edp"</span >
1853a9daa19e ("drm/i915/dp: make is_edp non-static and rename to
intel_dp_is_edp") was first introduced in v4.15.
<span class="quote">> cb6c81f Revert "drm/i915/edp: Do not do link training fallback or prune
> modes on EDP"</span >
a306343bcd7d ("drm/i915/edp: Do not do link training fallback or prune modes on
EDP") was first introduced in v4.16.
Does the Ubuntu kernel have backports of this stuff that you have to revert?
<span class="quote">> which seems to be consistent with the following revert on drm-tip:
> <a href="https://cgit.freedesktop.org/drm-tip/commit/drivers/gpu/drm/">https://cgit.freedesktop.org/drm-tip/commit/drivers/gpu/drm/</a>
> i915?id=368b554d63948133aca05e63ff8f5f4fbc2804d4
>
> Could the relevant fixes be included int the mainline kernel? I expect this
> to affect everybody with a Samsung NP900X3F/G laptop.</span >
I'm wondering what the relevant fixes would be in this case. Is 368b554d6394
("Revert "drm/i915/edp: Allow alternate fixed mode for eDP if available."")
enough alone on v4.17 release to fix it for you?</pre>
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