"Method https has died unexpectedly! Sub-process https received signal 4" after adding any additional repositories - Ubuntu Desktop 22.04
sudo GNUTLS_CPUID_OVERRIDE=0x1 apt-get update
this works for me
according to this https://groups.google.com/g/linux.debian.bugs.dist/c/ItKoVDieSow
and you need to add ~/.bashrc with this
export GNUTLS_CPUID_OVERRIDE=0x1
for long-term use