[Bug 199310] [TTM][DRM]Artifact in graphic/Font rendering problem(artifact/gaps/missing characters/black line instead text) with radeon on 10.2/10.3-RC2/3-RELEASE/10-STABLE

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=199310

Matthew Rezny <rezny at freebsd.org> changed:

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                 CC|                            |rezny at freebsd.org

--- Comment #15 from Matthew Rezny <rezny at freebsd.org> ---
(In reply to sasamotikomi from comment #14)

I have not seen any such problems using the radeon drivers. I have seen
glitches in the form of horizontal lines across the screen with the intel
drivers and many users report similar problems on Linux as well regardless of
the acceleration method. Note that there is zero overlap, intel uses UXA and
SNA whereas others use EXA, Glamor, and/or none. I believe this is the first
that I've heard of a font rendering issue, all the other reports of artifacts
are lines or boxes over the image. It does sound more like it would a problem
with font rendering code than drivers since you say it occurs on both intel and
radeon.

Can you give steps to reliably reproduce the problem?

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