I've found the kernel code that is not processing this key-event. https://github.com/torvalds/linux/blob/master/drivers/platform/x86/dell- wmi.c#L218
Is there any way that the event is NOT ignored by that code in the case of the Dell XPS 15 9550? (It was initially designed for Dell XPS 13 9350, where the intel-wifi-driver handles the hotkey event) I'll try the kernel mentioned by @jsalisbury -- 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/1589886 Title: Wireless hotkey fails on Dell XPS 15 9550 Status in linux package in Ubuntu: Incomplete Bug description: Title: Wireless hotkey fails on Dell XPS 15 9550 Summary: Wireless key does nothing on Dell XPS 15 9550. Observing "watch -n1 rfkill list", nothing changes when pressing wireless hotkey (Fn + PrtScr) Only message in /var/log/kern.log: kernel: [10909.979019] dell_wmi: Unknown key 153 pressed Steps: 1. Pressing wireless hotkey (Fn + PrtScr) Expected results: Wireless hotkey could disable/enable wireless devices Actual results: Wireless hotkey does nothing Additional information: Wifi card: Device: 02:00.0 Class: Network controller [0280] Vendor: Broadcom Corporation [14e4] Device: BCM43602 802.11ac Wireless LAN SoC [43ba] SVendor: Dell [1028] SDevice: BCM43602 802.11ac Wireless LAN SoC [0020] Rev: 01 CPU: Intel(R) Core(TM) i7-6700HQ CPU @ 2.60GHz (8x) GPU: 00:02.0 VGA compatible controller: Intel Corporation HD Graphics 530 (rev 06) Manufacturer: Dell ProductName: XPS 15 9550 BiosVersion: 01.02.00 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1589886/+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
