Hello,
today I tried Arch Linux with xorg-server 1.14.1 on an old Laptop with a S3 Graphics Ltd. VT8375 [ProSavage8 KM266/KL266].

When I tried to start X I got this error:
/usr/bin/X: symbol lookup error: /usr/lib/xorg/modules/drivers/savage_drv.so: undefined symbol: miInitializeBackingStore

Removing this call from the driver fixes the problem:

--- xf86-video-savage-2.3.6/src/savage_driver.c 2012-07-16 04:38:19.000000000 +0200
+++ b/src/savage_driver.c       2013-06-06 11:01:48.916227010 +0200
@@ -3408,7 +3408,6 @@ static Bool SavageScreenInit(SCREEN_INIT
        SavageInitAccel(pScreen);
     }

-    miInitializeBackingStore(pScreen);
     xf86SetBackingStore(pScreen);

     if( !psav->shadowFB && !psav->useEXA )


As far as I can see this call is still used in the git repository:
http://cgit.freedesktop.org/~tormod/xf86-video-savage/tree/src/savage_driver.c#n3415

Kind regards,

Alexander Grothe