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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - [GLK DSI] Black screen after grub - Ubuntu 18.04 - kernel latest tip 21.11.2018"
href="https://bugs.freedesktop.org/show_bug.cgi?id=108826#c169">Comment # 169</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - [GLK DSI] Black screen after grub - Ubuntu 18.04 - kernel latest tip 21.11.2018"
href="https://bugs.freedesktop.org/show_bug.cgi?id=108826">bug 108826</a>
from <span class="vcard"><a class="email" href="mailto:stanislav.lisovskiy@intel.com" title="Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>"> <span class="fn">Stanislav Lisovskiy</span></a>
</span></b>
<pre>(In reply to Mark Wynn Garcia from <a href="show_bug.cgi?id=108826#c167">comment #167</a>)
<span class="quote">> So I tested it and the screen and backlight now works! However I still
> encounter some issues:
> - Suspend/Resume still doesn't seem to power up the screen properly. Only
> the backlight turns on.</span >
That might mean you either have somewhat different hardware or kernel source
tree... Or we might need to search for some other typo ;)
<span class="quote">>
> But overall the fix makes everything so much better. I guess there's still a
> couple of cases we haven't checked, but I'm happy to start with this fix.</span >
(In reply to Miroslaw from <a href="show_bug.cgi?id=108826#c168">comment #168</a>)
<span class="quote">> I made tests
>
> - screen works during boot kernel and later Ubuntu !
> - Suspend/Resume .. WORKS ! finally
>
> .. make some more tests tomorrow but seems works finally proper !
> Great job after 6 months ;-D</span >
Great to hear that :) I have ended up comparing each and every register write
with default values set by BIOS.</pre>
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