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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - heavy screen flickering with Mobility Radeon X1600 and kernel version onwards 3.13"
href="https://bugs.freedesktop.org/show_bug.cgi?id=108514#c13">Comment # 13</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - heavy screen flickering with Mobility Radeon X1600 and kernel version onwards 3.13"
href="https://bugs.freedesktop.org/show_bug.cgi?id=108514">bug 108514</a>
from <span class="vcard"><a class="email" href="mailto:dufresnep@gmail.com" title="Paul Dufresne <dufresnep@gmail.com>"> <span class="fn">Paul Dufresne</span></a>
</span></b>
<pre>I am comparing PLL values for a not flickering kernel:
Linux version 3.14.79-031479-generic
and version 4.15 (recent one):
Linux 4.15:
Flickering values
[ 5.554557] [drm:radeon_compute_pll_avivo [radeon]] 122000 - 121980, pll
dividers - fb: 253.0 ref: 8, post 7
[ 465.773119] [drm:radeon_compute_pll_avivo [radeon]] 122000 - 121980, pll
dividers - fb: 253.0 ref: 8, post 7
[ 503.796178] [drm:radeon_compute_pll_avivo [radeon]] 122000 - 121980, pll
dividers - fb: 253.0 ref: 8, post 7
Linux version 3.14.79-031479-generic: no flickering
[4.250932] [drm:radeon_compute_pll_avivo], 12201, pll dividers - fb: 189.8 ref:
6, post 7
[ 230.376566] [drm:radeon_compute_pll_avivo], 12201, pll dividers - fb: 189.8
ref: 6, post 7
122000 is about 10x 12201
I don't know what are these values, but it seems very different!</pre>
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