3 files changed, 7 insertions(+), 2 deletions(-)

M ip/ipifc.c
M pc/screen.h
M pc/vgamach64xx.c

@@ 318,6 318,7 @@ ipifckick(void *x)
 	else
 		(*ifc->m->pktin)(c->p->f, ifc, bp);
 	runlock(ifc);
+	poperror();
 }
 
 /*

@@ 116,6 116,7 @@ struct VGAscr {
 	void	(*blank)(VGAscr*, int);
 	ulong	id;	/* internal identifier for driver use */
 	int isblank;
+	int overlayinit;
 };
 
 extern VGAscr vgascreen[];

@@ 831,7 831,6 @@ initengine(VGAscr *scr)
 			break;
 	}
 
-	init_overlayclock(scr);
 	waitforidle(scr);
 }
 


@@ 1175,9 1174,13 @@ mach64xxovlctl(VGAscr *scr, Chan *c, void *a, int n)
 	Cmdbuf *cb;
 	Cmdtab *ct;
 
-	if (!mach64type->m64_vtgt) 
+	if(!mach64type->m64_vtgt) 
 		error(Enodev);
 
+	if(!scr->overlayinit){
+		scr->overlayinit = 1;
+		init_overlayclock(scr);
+	}
 	cb = parsecmd(a, n);
 	if(waserror()){
 		free(cb);