xinerama segfault xserver 1.20.8

[DJ Coertzen]

Hi there,

Running xserver 1.20.8 with 2x nvidia GT1050ti cards, native driver
compiled.

Xorg segfaults when i turn on xinerama.

nvidia driver version: 450.57

uname -a Linux boeretroos 5.8.0-1-default #1 SMP Tue Aug 4 07:30:59 UTC
2020 (9bc0044) x86_64 x86_64 x86_64 GNU/Linux

from xlog:
[  3948.837] (II) Initializing extension NV-CONTROL
[  3949.008] (EE)
[  3949.008] (EE) Backtrace:
[  3949.008] (EE) 0: X (xorg_backtrace+0x7d) [0x55f60a5a024d]
[  3949.008] (EE) 1: X (0x55f60a3e8000+0x1bbf45) [0x55f60a5a3f45]
[  3949.008] (EE) 2: /lib64/libpthread.so.0 (0x7fadbf178000+0x14260)
[0x7fadbf18c260]
[  3949.008] (EE) 3: /lib64/libc.so.6 (gsignal+0x141) [0x7fadbefed4b1]
[  3949.008] (EE) 4: /lib64/libc.so.6 (abort+0x123) [0x7fadbefd6539]
[  3949.008] (EE) 5: /lib64/libc.so.6 (0x7fadbefb1000+0x25411)
[0x7fadbefd6411]
[  3949.008] (EE) 6: /lib64/libc.so.6 (0x7fadbefb1000+0x349e2)
[0x7fadbefe59e2]
[  3949.008] (EE) 7: X (0x55f60a3e8000+0x9c575) [0x55f60a484575]
[  3949.008] (EE) 8: X (0x55f60a3e8000+0x9ce18) [0x55f60a484e18]
[  3949.008] (EE) 9: X (_CallCallbacks+0x34) [0x55f60a4493d4]
[  3949.008] (EE) 10: X (0x55f60a3e8000+0x60080) [0x55f60a448080]
[  3949.008] (EE) 11: /lib64/libc.so.6 (__libc_start_main+0xea)
[0x7fadbefd7cca]
[  3949.008] (EE) 12: X (_start+0x2a) [0x55f60a43185a]
[  3949.008] (EE)
[  3949.008] (EE)
Fatal server error:
[  3949.008] (EE) Caught signal 6 (Aborted). Server aborting
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