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<div class="moz-cite-prefix">On 2/13/25 2:04 PM, Neal Gompa wrote:<br>
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cite="mid:CAEg-Je9XzrpCrHydXeWeR-xnx1-qO_6gNXH-dergJZ1WKwW3Yg@mail.gmail.com">
<pre wrap="" class="moz-quote-pre">On Thu, Feb 13, 2025 at 7:01 AM Vlad Zahorodnii <a class="moz-txt-link-rfc2396E" href="mailto:vlad.zahorodnii@kde.org"><vlad.zahorodnii@kde.org></a> wrote:
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Hello,
We've received a number of complaints from Plasma Wayland users about
screen turning black when using an ICC profile (which contains a BToA
tag) and the new "Prefer color accuracy" setting. [1]
The issue is reproducible only when kwin is built with GCC + LTO. If
kwin is built in the debug mode or the release mode but without LTO, the
issue is not reproducible. The issue is also not reproducible when using
clang + LTO.
It might be worth to disable LTO when building kwin 6.3.0.
Regards,
Vlad
[1] <a class="moz-txt-link-freetext" href="https://bugs.kde.org/show_bug.cgi?id=499789">https://bugs.kde.org/show_bug.cgi?id=499789</a>
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Is there a corresponding upstream GCC bug report about this? Also, the</pre>
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<p>Hi,</p>
<p>No, there is no upstream bug report yet. We would appreciate some
help with communicating this issue upstream.<br>
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</span></p>
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cite="mid:CAEg-Je9XzrpCrHydXeWeR-xnx1-qO_6gNXH-dergJZ1WKwW3Yg@mail.gmail.com">
<pre wrap="" class="moz-quote-pre">linked bug report doesn't mention anything about LTO. How did we
determine LTO is the cause?
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<p>We determined it by meticulously going through various
combinations of build options, compilers, and linkers. We were
able to reproduce the issue only when running kwin shipped by
Arch, Fedora, and Neon. With dev builds, we are unable to
reproduce the issue (unless LTO is enabled).<br>
</p>
<p>Regards,<br>
Vlad<br>
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