I'm not sure what fixed it but the recent update seems to have done the job. Whether it was a software conflict, I'm not sure, but as I seem to have been the only one affected I'll mark it as fixed.
** Changed in: ubuntu-terminal-app (Ubuntu) Status: New => Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1729893 Title: lspci and lshw causing total system freeze To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-terminal-app/+bug/1729893/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs