Grand Theft Auto: San Andreas. All Discussions Screenshots Broadcasts Videos News Guides Reviews GTA: San Andreas MOUSE FIX ! By ☣☢MarlBoro☢☣ When you set input configuration to joypad in the settings, go to "joypad settings". There you can invert/uninvert either stick in either axis. 2. LucW64. OP • 5 yr. ago. Thanks. 2. astrounaut1234. • 1 yr. ago. But many like me still couldn't fix it, and had the same problem. After a while of playing around with it, I figured out how to fix it. In your GTA:SA folder, you may see a file called d3d9.dll, this is the DirectX 9 file required, however, GTA:SA doesn't detect it. To fix this problem, rename it to d3d9_32.dll. This fixed the problem for me. RYiPro5.