FYI. I just encountered similar situation, but downgrading libx11-6 from 2:1.6.10-1 to 2:1.6.9-2+b1 emacs has been recovered. I hope someone confirms this.
On Mon, 3 Aug 2020 00:12:41 +0200 Salman Mohammadi <sal...@smoha.org> wrote: > Package: emacs > Version: 1:26.3+1-2 > Severity: grave > > > Dear Maintainer, > > I cannot run emacs at all and I get the following error message: > > Fatal error 11: Segmentation fault > Backtrace: > emacs[0x5111be] > emacs[0x4f6ead] > emacs[0x50f63e] > emacs[0x50f86d] > emacs[0x50f8e9] > /lib/x86_64-linux-gnu/libpthread.so.0(+0x14140)[0x7f29d6abd140] > emacs[0x4d94b0] > emacs[0x4d9897] > emacs[0x4da4df] > emacs[0x56dc2c] > emacs[0x5a74c0] > emacs[0x56dbab] > emacs[0x5a74c0] > emacs[0x56dbab] > emacs[0x56f90b] > emacs[0x56dc2c] > emacs[0x5a74c0] > emacs[0x56dbab] > emacs[0x5a74c0] > emacs[0x56dbab] > emacs[0x5a74c0] > emacs[0x56dbab] > emacs[0x5a74c0] > emacs[0x56dbab] > emacs[0x5a74c0] > emacs[0x570726] > emacs[0x56fcc6] > emacs[0x571c1c] > emacs[0x56cd7e] > emacs[0x4f8470] > emacs[0x56cced] > emacs[0x4f71f8] > emacs[0x4fc2b3] > emacs[0x4fc5f8] > emacs[0x41a5c2] > /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xea)[0x7f29d67ddcca] > emacs[0x41b29a] > Segmentation fault > > Regards, > > Salman > > > -- System Information: > Debian Release: bullseye/sid > APT prefers unstable > APT policy: (500, 'unstable') > Architecture: amd64 (x86_64)