Created attachment 136245 [details]
dc-mirroring-journal

Same machine as on the https://bugs.freedesktop.org/show_bug.cgi?id=104281 but
reproduced on multiple ACER laptops.

Using the latest Linus master compiled with CONFIG_DRM_AMD_DC_PRE_VEGA=y we
have that sometimes the image on the internal panel gets corrupted when
mirroring on an external HDMI display (see [0]).

We have verified that this is a regression introduced by the DC code. In
attachment the journal output.

[0] https://imgur.com/a/rnItJ