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<body><span class="vcard"><a class="email" href="mailto:rodrigo.vivi@gmail.com" title="Rodrigo Vivi <rodrigo.vivi@gmail.com>"> <span class="fn">Rodrigo Vivi</span></a>
</span> changed
<a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - [CFL] Screen goes blank right after boot."
href="https://bugs.freedesktop.org/show_bug.cgi?id=104139">bug 104139</a>
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<th>What</th>
<th>Removed</th>
<th>Added</th>
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<td style="text-align:right;">Status</td>
<td>REOPENED
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<td>NEEDINFO
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<b><a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - [CFL] Screen goes blank right after boot."
href="https://bugs.freedesktop.org/show_bug.cgi?id=104139#c7">Comment # 7</a>
on <a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - [CFL] Screen goes blank right after boot."
href="https://bugs.freedesktop.org/show_bug.cgi?id=104139">bug 104139</a>
from <span class="vcard"><a class="email" href="mailto:rodrigo.vivi@gmail.com" title="Rodrigo Vivi <rodrigo.vivi@gmail.com>"> <span class="fn">Rodrigo Vivi</span></a>
</span></b>
<pre>Sorry for not getting back sooner here...
So, VBT on this platform is bugged for sure. 6 is an invalid pin.
Anyways I double checked the code here and it is not possible if you have
latest code there.
Since you are running with
4.14.0-rc7+
you probably have this patch applied:
75be7756bc21 ("drm/i915/cnl: Don't trust VBT's alternate pin for port D for
now.")
but you are probably missing the proper fix:
9c3b2689d01f ("drm/i915/cnl: Map VBT DDC Pin to BSpec DDC Pin.")
Also probably a good idea to apply this one:
c4fb60b9aba9 ("drm/i915/bios: add DP max link rate to VBT child device struct")
Could you please apply both patches and retest?</pre>
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<b><a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - [CFL] Screen goes blank right after boot."
href="https://bugs.freedesktop.org/show_bug.cgi?id=104139#c6">Comment # 6</a>
on <a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - [CFL] Screen goes blank right after boot."
href="https://bugs.freedesktop.org/show_bug.cgi?id=104139">bug 104139</a>
from <span class="vcard"><a class="email" href="mailto:kai.heng.feng@canonical.com" title="Kai-Heng Feng <kai.heng.feng@canonical.com>"> <span class="fn">Kai-Heng Feng</span></a>
</span></b>
<pre>Hi Rodrigo,
The original one (In reply to Kai-Heng Feng from <a href="show_bug.cgi?id=104139#c5">comment #5</a>)
<span class="quote">> The new VBIOS fixed the issue.</span >
Turns out ODM just disable unused HDMI port, and workaround issue.
Now we are enabling a new CFL platform, same issue can be observed on this CFL
platform.
This new platform requires HDMI output, so we can't simply disable it in VBIOS.
Do you have any suggestion?
Thanks.</pre>
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