Public bug reported: Dell Latitude 5490 DMI: Dell Inc. Latitude 5490/0FDHF4, BIOS 1.18.0 09/10/2021
When machine goes into sleep, rfkill turns off the wifi card Then machine goes to sleep. When resumed, the wifi no longer works, Gnome reports "no wifi card" Trying to use rfkill to bring the card back does not work Trying to use the button on keyboard to turn off then on the wifi card does not work either Rebooting does not fix the issue : card is no longer working and set to "hardware disabled" The only solution is to turn OFF the machine, then ON again. I have opened a bug report on rf-kill there : https://bugs.launchpad.net/ubuntu/+source/util-linux/+bug/1947558 But the more I look into it the more it seems that it could be a problem in the ilwifi module. The card is turned off physically properly by rf-kill but trying to turn it back on fails So it seems that the ilwifi is unabled to bring the wifi card out of the hardware lock/off for this laptop model on Linux. ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: backport-iwlwifi-dkms (not installed) ProcVersionSignature: Ubuntu 5.11.0-37.41~20.04.2-generic 5.11.22 Uname: Linux 5.11.0-37-generic x86_64 ApportVersion: 2.20.11-0ubuntu27.20 Architecture: amd64 CasperMD5CheckResult: skip CurrentDesktop: ubuntu:GNOME Date: Mon Oct 18 10:33:22 2021 InstallationDate: Installed on 2021-10-08 (9 days ago) InstallationMedia: Ubuntu 20.04.3 LTS "Focal Fossa" - Release amd64 (20210819) SourcePackage: backport-iwlwifi-dkms UpgradeStatus: No upgrade log present (probably fresh install) ** Affects: backport-iwlwifi-dkms (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug focal -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1947561 Title: wifi card goes into hardware disable on resume on Dell Latitude 5490 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/backport-iwlwifi-dkms/+bug/1947561/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
