On Sun, 2023-04-16 at 15:08 -0400, Ben Westover wrote: > I'm probably doing something wrong (never used gdb before), but Xorg > closes almost instantly after I run it so there's not enough time to > launch gdb before it's already segfaulted. It sounds like these tips are > for when Xorg launches and runs for a bit but crashes when a specific > action is performed. There is also the case where you launch Xorg via gdb and then run it. $ gdb `which Xorg` (gdb) run (gdb) bt full Also, you will need to either install dbgsym packages beforehand (possibly using find-dbgsym-packages from debian-goodies), or install and enable libdebuginfod-common to let gdb auto-download debug symbols. Apart from running Xorg in gdb directly, another method is to install systemd-coredump, enable the Xorg Option NoTrapSignals to disable Xorg handling its own crashes, then load the crash dump file into gdb using `sudo coredumpctl debug`. PS: I'm subscribed, no need to CC me. -- bye, pabs https://wiki.debian.org/PaulWise
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