Public bug reported: This upstream bug effects Ubuntu kernels as well.
https://bugzilla.kernel.org/show_bug.cgi?id=201271 This question on AskUbuntu is someone else having the same problem. https://askubuntu.com/questions/1070246/dell-latitude-5490-not-coming- back-from-sleep-mode This kernel.org bug is exactly what I'm experiencing in the Ubuntu kernel. For me it's ~90% of the time the display turns off (i.e. on idle, before suspend) the system stays on (power LED is on, fan stays on) and it is unresponsive. I am unable to switch to TTY either. It requires a 4-second power button press to reboot the system. As stated in the bug, sometimes the system light on the front blinks with the CPU error code - orange orange white. The following kernel parameter in GRUB fixes it: i915.enable_dc=0 ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: linux-image-generic-hwe-18.04 5.0.0.37.95 ProcVersionSignature: Ubuntu 5.0.0-37.40~18.04.1-generic 5.0.21 Uname: Linux 5.0.0-37-generic x86_64 ApportVersion: 2.20.9-0ubuntu7.9 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Fri Dec 13 15:50:04 2019 InstallationDate: Installed on 2019-12-11 (2 days ago) InstallationMedia: Ubuntu 18.04.3 LTS "Bionic Beaver" - Release amd64 (20190805) ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: linux-meta-hwe UpgradeStatus: No upgrade log present (probably fresh install) ** Affects: linux-meta-hwe (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug bionic -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1856373 Title: Dell Latitude E5490 crashes on idle, instead of suspend To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-meta-hwe/+bug/1856373/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
