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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - intel-virtual-output only updates mouse"
href="https://bugs.freedesktop.org/show_bug.cgi?id=71345#c34">Comment # 34</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW --- - intel-virtual-output only updates mouse"
href="https://bugs.freedesktop.org/show_bug.cgi?id=71345">bug 71345</a>
from <span class="vcard"><a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> <span class="fn">Chris Wilson</span></a>
</span></b>
<pre>(In reply to <a href="show_bug.cgi?id=71345#c33">comment #33</a>)
<span class="quote">> So if I understand you properly, kernel is to be "blamed" about the issue
> about lag (or nvidia linuxdriver)?</span >
There are a couple of patches in later kernels that should improve latency here
(in i915.ko). The userptr patch would be less significant for you, but would
still help somewhat.
<span class="quote">> I see... I'm on Kernel 3.11.0 so I'll wait till Ubuntu releases
> 3.12.x-Kernelpackage or better 3.13.x-Kernelpackage. Are there patch
> suggested by intel included in kernel 3.12/3.13?</span >
I'm never certain, the bits that I touched in the last 3 months will be in
3.13. That time lag between when I submit a patch and when it shows up means I
lose all track of what actually is in distributions.
A simple way to check for ubuntu is the ppa:mainline
<a href="http://kernel.ubuntu.com/~kernel-ppa/mainline/drm-intel-experimental/">http://kernel.ubuntu.com/~kernel-ppa/mainline/drm-intel-experimental/</a>
However, none of this will help very much if the ratelimiting step is the pixel
transfer to the nvidia display...</pre>
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