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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - Tonga DC vblank_mode=0 not working as expected fullscreen"
href="https://bugs.freedesktop.org/show_bug.cgi?id=103486#c1">Comment # 1</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - Tonga DC vblank_mode=0 not working as expected fullscreen"
href="https://bugs.freedesktop.org/show_bug.cgi?id=103486">bug 103486</a>
from <span class="vcard"><a class="email" href="mailto:michel@daenzer.net" title="Michel Dänzer <michel@daenzer.net>"> <span class="fn">Michel Dänzer</span></a>
</span></b>
<pre>(In reply to Andy Furniss from <a href="show_bug.cgi?id=103486#c0">comment #0</a>)
<span class="quote">> R9285, I notice that on both drm-next-4.15-dc and amd-staging-drm-next,</span >
Which commit exactly of amd-staging-drm-next?
<span class="quote">> when using DC, vblank_mode=0 works windowed but not properly full screen.
>
> Tried forcing TearFree from auto to off no difference.</span >
That's expected; forcing TearFree on works around the problem though. :)
<span class="quote">> There is no tearing where it would be expected - but it's not like it's just
> being ignored, a bench mark test will cap fps at 2X refresh rate rather than
> 1X.
>
> Maybe this is expected?</span >
Definitely not, looks like there's been a regression affecting async flips.
<span class="quote">> It doesn't happen with a months older DC kernel I have [...]</span >
Can you try bisecting? Otherwise I'll try next week.</pre>
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