--- tdfxfb.c.2	Sat Jun  3 21:53:14 2000
+++ tdfxfb.c	Sat Jun  3 22:28:02 2000
@@ -2195,6 +2195,8 @@
 			     struct fb_info *fb) {
    struct fb_info_tdfx *info = (struct fb_info_tdfx*)fb;
    struct tdfxfb_par par;
+   int old_con = currcon;
+   int set_par = 1;
 
    /* Do we have to save the colormap? */
    if (currcon>=0)
@@ -2204,7 +2206,16 @@
    currcon = con;
    fb_display[currcon].var.activate = FB_ACTIVATE_NOW; 
    tdfxfb_decode_var(&fb_display[con].var, &par, info);
-   tdfxfb_set_par(&par, info);
+   if (old_con>=0 && vt_cons[old_con]->vc_mode!=KD_GRAPHICS) {
+     /* check if we have to change video registers */
+     struct tdfxfb_par old_par;
+     tdfxfb_decode_var(&fb_display[old_con].var, &old_par, info);
+     if (!memcmp(&par,&old_par,sizeof(par)))
+	set_par = 0;	/* avoid flicker */
+   }
+   if (set_par)
+     tdfxfb_set_par(&par, info);
+
    if (fb_display[con].dispsw && fb_display[con].conp)
      fb_con.con_cursor(fb_display[con].conp, CM_ERASE);