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diff --git a/sys/dev/vt/vt_core.c b/sys/dev/vt/vt_core.c
--- a/sys/dev/vt/vt_core.c
+++ b/sys/dev/vt/vt_core.c
@@ -594,7 +594,13 @@
VT_LOCK(vd);
if (curvw == vw) {
- /* Nothing to do. */
+ /*
+ * Nothing to do, except ensure the driver has the opportunity to
+ * switch to console mode when panicking, making sure the panic
+ * is readable (even when a GUI was using ttyv0).
+ */
+ if ((kdb_active || panicstr) && vd->vd_driver->vd_postswitch)
+ vd->vd_driver->vd_postswitch(vd);
VT_UNLOCK(vd);
return (0);
}

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