FIXED IT! It is indeed the intel_lpss driver, at least in my case. This commit: https://kernel.ubuntu.com/git/ubuntu/ubuntu-bionic.git/commit/kernel/module.c?h=Ubuntu-4.15.0-177.186&id=3879f4364139acb2bd3932e6a15994f109c49d6b
will not work right when a module that is asynchronously loaded tries to synchronously load a module, which is not (or no longer?) allowed. It appears the intel_lpss driver did just that until this commit: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/drivers/mfd/intel- lpss.c?id=569fac74627cc332a2097a7a4bfdc654b8e7f273 But this commit has not been backported to the 4.15 kernel, so the intel_lpss driver delivered with the 4.15.0-177 kernel package does not have it. Applying this commit to the 4.15.0-177 source tree, rebuilding and replacing (only!) the intel_lpss.ko module makes the kernel load without delays for me. I confirmed the same with kernel 4.15.0-180. So now we only need to convince the Ubuntu maintainers to backport https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/drivers/mfd/intel- lpss.c?id=569fac74627cc332a2097a7a4bfdc654b8e7f273 to the 4.15 kernel... -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1973167 Title: linux-image-4.15.0-177-generic freezes on the welcome screen To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1973167/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
