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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - Tearing after screen wakeup/on"
href="https://bugs.freedesktop.org/show_bug.cgi?id=103791#c5">Comment # 5</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - Tearing after screen wakeup/on"
href="https://bugs.freedesktop.org/show_bug.cgi?id=103791">bug 103791</a>
from <span class="vcard"><a class="email" href="mailto:denisgolovan@yandex.ru" title="denisgolovan@yandex.ru">denisgolovan@yandex.ru</a>
</span></b>
<pre>(In reply to Michel Dänzer from <a href="show_bug.cgi?id=103791#c4">comment #4</a>)
<span class="quote">> We need to find out why the kernel starts returning -EINVAL from the page
> flip and wait for vblank ioctls.
>
> Can you try writing 255 to /sys/module/drm/parameters/debug before
> reproducing the problem, and attach the resulting dmesg output? (Note that
> writing non-0 to /sys/module/drm/parameters/debug will cause a lot of
> debugging output to be generated, so you'll want to write 0 to it again soon
> afterwards)</span >
Got it. I'll attach dmesg as soon as I reproduce the issue.
<span class="quote">> In case that doesn't reveal why -EINVAL is being returned, are you able to
> recompile the drm.ko / amdgpu.ko kernel modules with a patch applied?</span >
Sure. Gentoo is there :)</pre>
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