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<body><span class="vcard"><a class="email" href="mailto:przanoni@gmail.com" title="Paulo Zanoni <przanoni@gmail.com>"> <span class="fn">Paulo Zanoni</span></a>
</span> changed
<a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [HSW mobile Acer notebook] eDP can't light up in boot to text mode"
href="https://bugs.freedesktop.org/show_bug.cgi?id=65995">bug 65995</a>
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<td>przanoni@gmail.com
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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [HSW mobile Acer notebook] eDP can't light up in boot to text mode"
href="https://bugs.freedesktop.org/show_bug.cgi?id=65995#c18">Comment # 18</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [HSW mobile Acer notebook] eDP can't light up in boot to text mode"
href="https://bugs.freedesktop.org/show_bug.cgi?id=65995">bug 65995</a>
from <span class="vcard"><a class="email" href="mailto:przanoni@gmail.com" title="Paulo Zanoni <przanoni@gmail.com>"> <span class="fn">Paulo Zanoni</span></a>
</span></b>
<pre>(In reply to <a href="show_bug.cgi?id=65995#c0">comment #0</a>)
<span class="quote">> Created <span class=""><a href="attachment.cgi?id=81148" name="attach_81148" title="dmesg: eDP can't light up when machine booting up">attachment 81148</a> <a href="attachment.cgi?id=81148&action=edit" title="dmesg: eDP can't light up when machine booting up">[details]</a></span>
> dmesg: eDP can't light up when machine booting up
>
> Environment:
> ---------------------
> HW info:
> Acer Haswell Notebook Aspire V3 772G 17.3 ;
> Host bridge ID=0x0c04 (rev 06);
> VGA ID=0x0416 (rev06);
> CPU: i7-4702MQ 2.2GHz;
> BIOS:v1.04 MEM: 4G ;
>
> Kernel: (drm-intel-nightly)19b2dbde5732170a03bd82cc8bd442cf88d856f7
> Some additional commit info:
> Author: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>
> Date: Wed Jun 12 10:15:12 2013 +0100
>
> drm/i915: Restore fences after resume and GPU resets
>
> Description:
> ---------------------
> I have tried many kernels, when machine boot up, eDP can display well in
> BIOS, but failed to display after system finished initialized. If I removed
> i915, eDP can display again.
>
> The followed phenomenon:
> 1. eDP failed to display if boot to level 3.
> 2. eDP light up again by start X(but it need to connect another display
> pipe).</span >
The last time I saw a problem with such description on my machine, it was a
Backlight bug.
What if you boot to level 3, then start X, then SSH to the machine and
"DISPLAY=:0 xrandr --output eDP1 --set BACKLIGHT 15"?</pre>
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