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<base href="https://bugs.freedesktop.org/" />
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<th>Priority</th>
<td>medium
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<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Black laptop screen and external monitor has flickering problem"
href="https://bugs.freedesktop.org/show_bug.cgi?id=60009">60009</a>
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<th>Assignee</th>
<td>chris@chris-wilson.co.uk
</td>
</tr>
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<th>Summary</th>
<td>Black laptop screen and external monitor has flickering problem
</td>
</tr>
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<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
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<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
</tr>
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<th>OS</th>
<td>All
</td>
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<th>Reporter</th>
<td>benny@ammitzboell-consult.dk
</td>
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<th>Hardware</th>
<td>Other
</td>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Version</th>
<td>unspecified
</td>
</tr>
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<th>Component</th>
<td>Driver/intel
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<th>Product</th>
<td>xorg
</td>
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<div>
<pre>Created <span class=""><a href="attachment.cgi?id=73821" name="attach_73821" title="Xorg.0.log">attachment 73821</a> <a href="attachment.cgi?id=73821&action=edit" title="Xorg.0.log">[details]</a></span>
Xorg.0.log
My laptop is an HP Envy 17 3D. I am running Gentoo and using vgaswitcheroo to
switch between radeon and intel (i915). I have the radeon driver working with
some difficulty (see <a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Radeon HD 7690M XT only shows 1280x1024, not able to get 1920x1080"
href="show_bug.cgi?id=58894">https://bugs.freedesktop.org/show_bug.cgi?id=58894</a>) - i.e.
I have to attach an external monitor to get the laptop screen turned on after
KDE has started.
I would like to be able to use the intel driver and switch off the radeon chip
because it uses much less power. I can do this using vgaswitcheroo, but the
intel driver gives me 2 problems:
1) The laptop screen stays black after the boot process has completed. If I
attach an external monitor I can get a picture on that, but the laptop screen
just stays black.
2) Moving the mouse pointer to the top left corner (rather, the top left square
of maybe 1/3 of the screen) the screen starts to flicker from the mouse pointer
and downwards.
I also notice that it takes quite a while before KDE displays anything during
the boot with the intel driver enabled compared to the time it takes if the
radeon driver is used.
bla-hpenvy17 ~ # lspci -nn | grep VGA
00:02.0 VGA compatible controller [0300]: Intel Corporation 2nd Generation Core
Processor Family Integrated Graphics Controller [8086:0116] (rev 09)
01:00.0 VGA compatible controller [0300]: Advanced Micro Devices [AMD] nee ATI
Whistler XT [AMD Radeon HD 6700M Series] [1002:6740] (rev ff)
I notice that the radeon driver uses eDP-1 as output to laptop screen and intel
driver uses eDP-2. I think perhaps the laptop screen is still showing the
output from the radeon chip, which gives the black screen.
Let me know if you need any more information.</pre>
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