Je pencherais par les mises à jour par les commandes :
sudo apt update
sudo apt full-upgrade
car il y a eu aussi, hier une mise à jour du
linux-firmware >
https://www.ubuntuupdates.org/package/core/xenial/main/updates/linux-firmware
Changelog
Version: 1.157.15 2018-01-24 16:06:49 UTC
linux-firmware (1.157.15) xenial; urgency=medium
* QCA6174A XR cannot find any WiFi AP (LP: #1728523)
- ath10k: QCA6174 hw3.0: update board-2.bin
- ath10k: QCA6174 hw3.0: update board-2.bin
- ath10k: QCA6174 hw3.0: update board-2.bin
* Intel 9260/9462/9560 firmware support (LP: #1734243)
- iwlwifi: add firmware version 33 for new 9000 series
- linux-firmware: Add firmware file for Intel Bluetooth 9560
- linux-firmware: Add firmware file for Intel Bluetooth 9260
* Bluetooth mouse and keyboard connects, works for a few seconds, then
doesn't react (LP: #1729389)
- linux-firmware: Update firmware patch for Intel Bluetooth,8260
- linux-firmware: Update firmware file for Intel Bluetooth 8265
- linux-firmware: Update firmware patch for Intel Bluetooth 8260
-- Seth Forshee <email address hidden> Tue, 12 Dec 2017 08:26:17 -0600