I am running fedora 28 with kernel 4.19.8-300 and see this issue too, but just any FYI it seems disabling the wireless switch for both bt & wifi (by default both wireless and bluetooth can be switched on/off with the fn+home buttons) in the BIOS resolves this issue, only mentioning as it might help track down the bug.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1799988 Title: Missing wifi and bluetooth after sleep on XPS 9370 To manage notifications about this bug go to: https://bugs.launchpad.net/dell-sputnik/+bug/1799988/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs