Thanks. This certainly looks like a kernel bug or hardware failure. Your errors coming from the 'pcieport' kernel module appear to correlate with errors from the 'nvme' module (for a solid state hard drive). So I think that's the problem area, which will indeed slow down everything and make various hardware devices non-responsive.
Your description also mentions wifi issues (which would be your 'ath10k_pci' kernel module) but I think that's most likely a side-effect of the PCIe problems from the former. If I had to guess then you probably need one of: (a) a kernel bug fix; or (b) a new solid state drive; or (c) a new motherboard. We'll wait and see what the kernel people say... ** Changed in: linux (Ubuntu) Status: Incomplete => New ** Changed in: gnome-shell (Ubuntu) Status: Incomplete => Invalid ** Summary changed: - 18.04 3.27 Gnome-shell Near-Fatalities + Lots of pcieport and nvme kernel errors on resuming from sleep - system non-responsive ** Summary changed: - Lots of pcieport and nvme kernel errors on resuming from sleep - system non-responsive + Lots of pcieport and nvme kernel errors - system non-responsive -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1754425 Title: Lots of pcieport and nvme kernel errors - system non-responsive To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1754425/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs