Hello, running Debian testing on apple silicon had the same issue. The culprit seems to be that libunwind was recently updated to 1.6.2-2 which triggers the issue for us. Downgrading to the old version works for us:
wget http://ftp.de.debian.org/debian/pool/main/libu/libunwind/libunwind8_1.3.2-2_arm64.deb sudo dpkg -i libunwind8_1.3.2-2_arm64.deb I also tried to build Xorg against the new libunwind, which did __not__ resolve the issue. Output when libunwind is upgraded to 1.6.2-2: (EE) (EE) Backtrace: (EE) 0: /usr/lib/xorg/Xorg (OsLookupColor+0x188) [0xaaaae58f96c8] (EE) unw_get_proc_info failed: no unwind info found [-10] (EE) (EE) Segmentation fault at address 0x0 (EE) Fatal server error: (EE) Caught signal 11 (Segmentation fault). Server aborting (EE) (EE) Please consult the The X.Org Foundation support at http://wiki.x.org for help. (EE) Cheers, Thomas