No solution, sorry, but I have exactly the same problem.
I can debug successfully a local program on Sonoma 14.2.1 on an M2,
but when trying to debug the same code/program on Sonoma 14.2.1 on a 2019 Intel i5, I repeatedly get the "lost connection" outcome after setting a breakpoint at main():
(lldb) target create "factorial"
Current executable set to '/Users/chris/src/showc/showc/src/factorial' (x86_64).
(lldb) br set -n main
Breakpoint 1: where = factorial`main + 22 at factorial.c:30:9, address = 0x0000000100000e96
(lldb) run
Process 85314 launched: '/Users/chris/src/showc/showc/src/factorial' (x86_64)
Process 85314 exited with status = -1 (0xffffffff) lost connection
The frequent suggestion of using settings set plugin.process.gdb-remote.packet-timeout 300 has no effect.
chrism238
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Wondering if (anyone) has seen any progress with this? My situation is identical to af57aviram's - the sequence results in the same failure on Intel, but is successful on Silicon M2s. Thank you,