On 19/01/2022 00:02, Ken Whitesell wrote:
On 1/17/2022 1:29 PM, Ken Whitesell wrote:
Is there a known solution for this? (Or is it known that there is no
solution?)
Thanks for reporting this.
Any guidance, pointers, suggestions of avenues for further research,
or other information, will all be greatly appreciated.
After more research and experimentation, it appears to be related to one
of xorg-server, xorg-server-common, or xorg-server-xorg.
Installing the older version 1.20.12-1 of these packages allows the
windows to be moved between monitors without any issues. Upgrading to
the current version 21.1.3-1 creates the problems. I'm able to replicate
this behavior on two different laptops with two different external
monitors.
It seems likely that this is an unintended effect of changes in
xorg-server 21.1.0-1, trying to fix problems in this area (See [1])
You might find that starting the server and specifying a fixed dpi value
with the '-dpi' option might workaround this.
[1] https://cygwin.com/pipermail/cygwin-announce/2021-November/010286.html
If I change the scaling from 125% to 100% on the laptop's display,
the problem appears until I restart Cygwin/X. Restarting Cygwin/X
shows it displaying properly, until I change the scaling again.
I could only reproduce this problem with mis-rendering when changing the
scaling on the secondary monitor.
(This is presumably somehow related to the fact that we now keep that
window at the same pixel dimensions, rather than allowing Windows to
scale it).
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