Closing this bug as per OP's comment (google translated): En fait j'ai résolu depuis mon appel le problème: en repérant dans les forums l'application Solaar qui prend en charge les périphériques Logitech.
Après installation du paquet, mon clavier K400 est de nouveau reconnu In fact I've solved the problem since I called the Solaar application that supports Logitech devices. After installing the package, my K400 keyboard is recognized again ** Changed in: linux (Ubuntu) Status: Incomplete => Invalid -- 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/1852005 Title: IR connection off Status in linux package in Ubuntu: Invalid Bug description: IR connection between keyboard and IR usb dongle don't work after update from 19.04 to 19.10 version. ProblemType: Bug DistroRelease: Ubuntu 19.10 Package: xorg 1:7.7+19ubuntu12 ProcVersionSignature: Ubuntu 5.3.0-19.20-generic 5.3.1 Uname: Linux 5.3.0-19-generic x86_64 .tmp.unity_support_test.0: ApportVersion: 2.20.11-0ubuntu8.2 Architecture: amd64 CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: None Date: Sun Nov 10 17:45:17 2019 DistUpgraded: 2019-11-09 21:16:11,874 ERROR got error from PostInstallScript ./xorg_fix_proprietary.py (g-exec-error-quark: L’exécution du processus fils « ./xorg_fix_proprietary.py » a échoué (Aucun fichier ou dossier de ce type) (8)) DistroCodename: eoan DistroVariant: ubuntu GraphicsCard: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0102] (rev 09) (prog-if 00 [VGA controller]) Subsystem: ZOTAC International (MCO) Ltd. 2nd Generation Core Processor Family Integrated Graphics Controller [19da:a166] InstallationDate: Installed on 2017-07-09 (854 days ago) InstallationMedia: Ubuntu 16.04.2 LTS "Xenial Xerus" - Release amd64 (20170215.2) MachineType: MotherBoard By ZOTAC MotherBoard H67ITX-C-E ProcEnviron: PATH=(custom, no user) LANG=fr_FR.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.3.0-19-generic root=UUID=13b961a4-dd4b-4d07-b797-e439cb398142 ro quiet splash vt.handoff=7 SourcePackage: xorg UpgradeStatus: Upgraded to eoan on 2019-11-09 (0 days ago) dmi.bios.date: 04/13/2012 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: A166P033 dmi.board.asset.tag: NA dmi.board.name: H67ITX-C-E dmi.board.vendor: ZOTAC dmi.board.version: 05 dmi.chassis.asset.tag: NA dmi.chassis.type: 3 dmi.chassis.vendor: NA dmi.chassis.version: NA dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrA166P033:bd04/13/2012:svnMotherBoardByZOTAC:pnMotherBoardH67ITX-C-E:pvrMotherBoard05:rvnZOTAC:rnH67ITX-C-E:rvr05:cvnNA:ct3:cvrNA: dmi.product.family: NA dmi.product.name: MotherBoard H67ITX-C-E dmi.product.sku: NA dmi.product.version: MotherBoard 05 dmi.sys.vendor: MotherBoard By ZOTAC version.compiz: compiz 1:0.9.14.0+19.10.20190918-0ubuntu1 version.libdrm2: libdrm2 2.4.99-1ubuntu1 version.libgl1-mesa-dri: libgl1-mesa-dri 19.2.1-1ubuntu1 version.libgl1-mesa-glx: libgl1-mesa-glx 19.2.1-1ubuntu1 version.xserver-xorg-core: xserver-xorg-core 2:1.20.5+git20191008-0ubuntu1 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.6-1 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.0.1-1ubuntu1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20190815-1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.16-1 xserver.bootTime: Mon Sep 24 00:15:10 2018 xserver.configfile: default xserver.errors: xserver.logfile: /var/log/Xorg.0.log xserver.version: 2:1.19.6-1ubuntu4~16.04.1 xserver.video_driver: modeset To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1852005/+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