It seems like it has, I've been running this 4.15 kernel you pointed me to since yesterday's afternoon, and so far I haven't encountered any issues.
** Tags added: kernel-fixed-upstream -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1742676 Title: Ubuntu kernels 4.10+ hard freeze on Thinkpad X230 about 10 minutes after a boot. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1742676/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs