I can observe the same issue on several Dell systems with Linux kernel v4.4. I didn't test older kernel though.
It should be handled by the kernel instead of udevd's hwdb. Does !wlan in hwdb necessary to make the wireless hotkey to work? Anyway this is not the correct solution, the "!" is to send a release key for buggy keyboard, but 0xe008 we see here is just a "notification" instead of a real key press. ** Changed in: linux (Ubuntu) Assignee: (unassigned) => Kai-Heng Feng (kaihengfeng) -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1762385 Title: dell_wmi: Unknown key codes Status in linux package in Ubuntu: Confirmed Bug description: RFKill key produces these messages in kernel log: dell_wmi: Unknown key with type 0x0010 and code 0xe008 pressed This key code is a notification and should be added as KEY_IGNORE here: https://github.com/torvalds/linux/blob/master/drivers/platform/x86 /dell-wmi.c#L263 ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: linux-image-4.15.0-15-generic 4.15.0-15.16 ProcVersionSignature: Ubuntu 4.15.0-15.16-generic 4.15.15 Uname: Linux 4.15.0-15-generic x86_64 ApportVersion: 2.20.9-0ubuntu4 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: dmig 2737 F.... pulseaudio CurrentDesktop: ubuntu:GNOME Date: Mon Apr 9 18:09:03 2018 InstallationDate: Installed on 2018-03-27 (12 days ago) InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Alpha amd64 (20180327) MachineType: Dell Inc. Inspiron 5379 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/@/boot/vmlinuz-4.15.0-15-generic root=UUID=9745e22b-0b19-4a7d-98a0-1a4bc5b19d99 ro rootflags=subvol=@ quiet splash vt.handoff=1 RelatedPackageVersions: linux-restricted-modules-4.15.0-15-generic N/A linux-backports-modules-4.15.0-15-generic N/A linux-firmware 1.173 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 01/31/2018 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.6.0 dmi.board.name: 0C6J64 dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 10 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr1.6.0:bd01/31/2018:svnDellInc.:pnInspiron5379:pvr:rvnDellInc.:rn0C6J64:rvrA00:cvnDellInc.:ct10:cvr: dmi.product.family: Inspiron dmi.product.name: Inspiron 5379 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1762385/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp