After upgrade from 11.2 to 12.0 (with freebsd-update and `pkg upgrade -f`), launch of firefox (from packages for 12) causes segmentation fault: Core was generated by `firefox'. Program terminated with signal SIGSEGV, Segmentation fault. #0 0x22aeb63f in _nv024tls () from /usr/local/lib/libnvidia-tls.so.1 (gdb) bt #0 0x22aeb63f in _nv024tls () at /usr/local/lib/libnvidia-tls.so.1 #1 0xffbfc9ac in () #2 0x21038d1e in () at /libexec/ld-elf.so.1 #3 0x2103553b in () at /libexec/ld-elf.so.1 #4 0x21035394 in dlopen () at /libexec/ld-elf.so.1 #5 0x01027d1f in mozilla::GetBootstrap(char const*) () #6 0x01006ed8 in InitXPCOMGlue() () #7 0x01006b2e in main () (gdb) ~ # pkg info -o firefox firefox-64.0_3,1 www/firefox ~ # pkg which /usr/local/lib/libnvidia-tls.so.1 /usr/local/lib/libnvidia-tls.so.1 was installed by package nvidia-driver-304-304.137_2 I recompiled nvidia-driver-304 from port and rebooted - same error. Motherboard ASUS M2NPV-MX with integrated video GeForce 6150. Same bug report from another user: https://devtalk.nvidia.com/default/topic/1045764/sigsegv-on-freebsd-12-0-with-304-137-on-geforce-6200/