A physical head runs at the mode its owner set, and MirrorDisplay::create
ignores the requested one on purpose. So a mid-stream Reconfigure against
a mirror could only ever tear the cast down and rebuild the identical one
at the identical size — a hitch that buys nothing, and an invitation to
the worse reflex of reconfiguring the display someone is sitting at.
reconfig_allowed grows a third gate beside gamescope and per-client-mode
identity, and the session captures it at bring-up like the others: this
session opened its display under whatever the pin said then, so a console
change mid-session must not retroactively change the answer it gives.
Linux-only, because vdisplay::open only routes to the mirror there — a
pin left in a Windows host's settings streams nothing different and must
not disable resize as a side effect.
design/per-monitor-portal-capture.md §7.3, open item 4.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
enricobuehlerandClaude Opus 5
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