This issue, especially comment #7 looks very much like the issues I've been having since I installed Ubuntu on my desktop for the first time.
I have described the issue in this askubuntu post more in detail: https://askubuntu.com/questions/1286301/ubuntu-20-04-1-lts-mouse- removed-and-added-intermittently Log messages when the issue occurs: ``` nov 08 19:33:19 trillian kernel: usb 2-1.4.2: USB disconnect, device number 15 nov 08 19:33:19 trillian /usr/lib/gdm3/gdm-x-session[3785]: (II) config/udev: removing device Logitech Gaming Mouse G400 nov 08 19:33:19 trillian /usr/lib/gdm3/gdm-x-session[3785]: (**) Option "fd" "78" nov 08 19:33:19 trillian /usr/lib/gdm3/gdm-x-session[3785]: (II) event2 - Logitech Gaming Mouse G400: device removed nov 08 19:33:19 trillian /usr/lib/gdm3/gdm-x-session[3785]: (II) UnloadModule: "libinput" nov 08 19:33:19 trillian /usr/lib/gdm3/gdm-x-session[3785]: (II) systemd-logind: releasing fd for 13:66 nov 08 19:33:19 trillian kernel: usb 2-1.4.2: new full-speed USB device number 16 using ehci-pci nov 08 19:33:20 trillian kernel: usb 2-1.4.2: New USB device found, idVendor=046d, idProduct=c245, bcdDevice=69.00 nov 08 19:33:20 trillian kernel: usb 2-1.4.2: New USB device strings: Mfr=1, Product=2, SerialNumber=0 nov 08 19:33:20 trillian kernel: usb 2-1.4.2: Product: Gaming Mouse G400 nov 08 19:33:20 trillian kernel: usb 2-1.4.2: Manufacturer: Logitech nov 08 19:33:20 trillian kernel: input: Logitech Gaming Mouse G400 as /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.4/2-1.4.2/2-1.4.2:1.0/0003:046D:C245.0016/input/input29 nov 08 19:33:20 trillian kernel: hid-generic 0003:046D:C245.0016: input,hidraw0: USB HID v1.10 Mouse [Logitech Gaming Mouse G400] on usb-0000:00:1d.0-1.4.2/input0 nov 08 19:33:20 trillian kernel: hid-generic 0003:046D:C245.0017: hiddev0,hidraw1: USB HID v1.10 Device [Logitech Gaming Mouse G400] on usb-0000:00:1d.0-1.4.2/input1 nov 08 19:33:20 trillian mtp-probe[7109]: checking bus 2, device 16: "/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.4/2-1.4.2" nov 08 19:33:20 trillian mtp-probe[7109]: bus: 2, device: 16 was not an MTP device nov 08 19:33:20 trillian /usr/lib/gdm3/gdm-x-session[3785]: (II) config/udev: Adding input device Logitech Gaming Mouse G400 (/dev/input/mouse0) nov 08 19:33:20 trillian /usr/lib/gdm3/gdm-x-session[3785]: (II) No input driver specified, ignoring this device. nov 08 19:33:20 trillian /usr/lib/gdm3/gdm-x-session[3785]: (II) This device may have been added with another device file. nov 08 19:33:20 trillian /usr/lib/gdm3/gdm-x-session[2421]: (II) config/udev: Adding input device Logitech Gaming Mouse G400 (/dev/input/mouse0) nov 08 19:33:20 trillian /usr/lib/gdm3/gdm-x-session[2421]: (II) No input driver specified, ignoring this device. nov 08 19:33:20 trillian /usr/lib/gdm3/gdm-x-session[2421]: (II) This device may have been added with another device file. nov 08 19:33:20 trillian /usr/lib/gdm3/gdm-x-session[2421]: (II) config/udev: Adding input device Logitech Gaming Mouse G400 (/dev/input/event2) nov 08 19:33:20 trillian /usr/lib/gdm3/gdm-x-session[3785]: (II) config/udev: Adding input device Logitech Gaming Mouse G400 (/dev/input/event2) nov 08 19:33:20 trillian /usr/lib/gdm3/gdm-x-session[3785]: (**) Logitech Gaming Mouse G400: Applying InputClass "libinput pointer catchall" nov 08 19:33:20 trillian /usr/lib/gdm3/gdm-x-session[3785]: (II) Using input driver 'libinput' for 'Logitech Gaming Mouse G400' nov 08 19:33:20 trillian /usr/lib/gdm3/gdm-x-session[2421]: (**) Logitech Gaming Mouse G400: Applying InputClass "libinput pointer catchall" nov 08 19:33:20 trillian /usr/lib/gdm3/gdm-x-session[2421]: (II) Using input driver 'libinput' for 'Logitech Gaming Mouse G400' nov 08 19:33:20 trillian mtp-probe[7117]: checking bus 2, device 16: "/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.4/2-1.4.2" nov 08 19:33:20 trillian mtp-probe[7117]: bus: 2, device: 16 was not an MTP device nov 08 19:33:20 trillian /usr/lib/gdm3/gdm-x-session[2421]: (II) systemd-logind: got fd for /dev/input/event2 13:66 fd 27 paused 1 nov 08 19:33:20 trillian /usr/lib/gdm3/gdm-x-session[2421]: (II) systemd-logind: releasing fd for 13:66 nov 08 19:33:20 trillian /usr/lib/gdm3/gdm-x-session[3785]: (II) systemd-logind: got fd for /dev/input/event2 13:66 fd 78 paused 0 nov 08 19:33:20 trillian /usr/lib/gdm3/gdm-x-session[3785]: (**) Logitech Gaming Mouse G400: always reports core events nov 08 19:33:20 trillian /usr/lib/gdm3/gdm-x-session[3785]: (**) Option "Device" "/dev/input/event2" nov 08 19:33:20 trillian /usr/lib/gdm3/gdm-x-session[3785]: (**) Option "_source" "server/udev" nov 08 19:33:20 trillian /usr/lib/gdm3/gdm-x-session[3785]: (II) event2 - Logitech Gaming Mouse G400: is tagged by udev as: Mouse nov 08 19:33:20 trillian /usr/lib/gdm3/gdm-x-session[3785]: (II) event2 - Logitech Gaming Mouse G400: device set to 800 DPI nov 08 19:33:20 trillian /usr/lib/gdm3/gdm-x-session[3785]: (II) event2 - Logitech Gaming Mouse G400: device is a pointer nov 08 19:33:20 trillian /usr/lib/gdm3/gdm-x-session[3785]: (II) event2 - Logitech Gaming Mouse G400: device removed nov 08 19:33:20 trillian /usr/lib/gdm3/gdm-x-session[3785]: (**) Option "config_info" "udev:/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.4/2-1.4.2/2-1.4.2:1.0/0003:046D:C245.0016/input/input29/event2" nov 08 19:33:20 trillian /usr/lib/gdm3/gdm-x-session[3785]: (II) XINPUT: Adding extended input device "Logitech Gaming Mouse G400" (type: MOUSE, id 8) nov 08 19:33:20 trillian /usr/lib/gdm3/gdm-x-session[3785]: (**) Option "AccelerationScheme" "none" nov 08 19:33:20 trillian /usr/lib/gdm3/gdm-x-session[3785]: (**) Logitech Gaming Mouse G400: (accel) selected scheme none/0 nov 08 19:33:20 trillian /usr/lib/gdm3/gdm-x-session[3785]: (**) Logitech Gaming Mouse G400: (accel) acceleration factor: 2.000 nov 08 19:33:20 trillian /usr/lib/gdm3/gdm-x-session[3785]: (**) Logitech Gaming Mouse G400: (accel) acceleration threshold: 4 nov 08 19:33:20 trillian /usr/lib/gdm3/gdm-x-session[3785]: (II) event2 - Logitech Gaming Mouse G400: is tagged by udev as: Mouse nov 08 19:33:20 trillian /usr/lib/gdm3/gdm-x-session[3785]: (II) event2 - Logitech Gaming Mouse G400: device set to 800 DPI nov 08 19:33:20 trillian /usr/lib/gdm3/gdm-x-session[3785]: (II) event2 - Logitech Gaming Mouse G400: device is a pointer ``` -- 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/1794245 Title: Attached USB devices are ignored. Status in linux package in Ubuntu: Confirmed Bug description: After few suspends or detach-/attachments of USB devices libinput starts ignoring new devices due to too many input devices. Unnecessary to say there is only one device attached. journalctr reports this behavior: /usr/lib/gdm3/gdm-x-session[1407]: (**) PixArt USB Optical Mouse: always reports core events# /usr/lib/gdm3/gdm-x-session[1407]: (**) Option "Device" "/dev/input/event295" /usr/lib/gdm3/gdm-x-session[1407]: (**) Option "_source" "server/udev" /usr/lib/gdm3/gdm-x-session[1407]: (II) event295 - PixArt USB Optical Mouse: is tagged by udev as: Mouse /usr/lib/gdm3/gdm-x-session[1407]: (II) event295 - PixArt USB Optical Mouse: device set to 1000 DPI /usr/lib/gdm3/gdm-x-session[1407]: (II) event295 - PixArt USB Optical Mouse: device is a pointer /usr/lib/gdm3/gdm-x-session[1407]: (II) event295 - PixArt USB Optical Mouse: device removed /usr/lib/gdm3/gdm-x-session[1407]: (EE) Too many input devices. Ignoring PixArt USB Optical Mouse /usr/lib/gdm3/gdm-x-session[1407]: (II) UnloadModule: "libinput" The bug seems related to a known libinput bug 1579567. https://bugzilla.redhat.com/show_bug.cgi?id=1579567 ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: xserver-xorg-input-libinput 0.27.1-1 ProcVersionSignature: Ubuntu 4.15.0-34.37-generic 4.15.18 Uname: Linux 4.15.0-34-generic x86_64 ApportVersion: 2.20.9-0ubuntu7.2 Architecture: amd64 BootLog: Error: [Errno 13] Keine Berechtigung: '/var/log/boot.log' CurrentDesktop: ubuntu:GNOME Date: Tue Sep 25 09:11:31 2018 DistUpgraded: Fresh install DistroCodename: bionic DistroVariant: ubuntu MachineType: ASUSTeK COMPUTER INC. UX51VZA ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=de_DE.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-34-generic root=UUID=05aab5a7-bef4-4178-acea-7bebfacf8766 ro quiet splash vt.handoff=1 SourcePackage: xserver-xorg-input-libinput UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 12/03/2012 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: UX51VZA.204 dmi.board.asset.tag: ATN12345678901234567 dmi.board.name: UX51VZA dmi.board.vendor: ASUSTeK COMPUTER INC. dmi.board.version: 1.0 dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: ASUSTeK COMPUTER INC. dmi.chassis.version: 1.0 dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrUX51VZA.204:bd12/03/2012:svnASUSTeKCOMPUTERINC.:pnUX51VZA:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnUX51VZA:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0: dmi.product.family: UX dmi.product.name: UX51VZA dmi.product.version: 1.0 dmi.sys.vendor: ASUSTeK COMPUTER INC. version.compiz: compiz N/A version.libdrm2: libdrm2 2.4.91-2 version.libgl1-mesa-dri: libgl1-mesa-dri 18.0.5-0ubuntu0~18.04.1 version.libgl1-mesa-glx: libgl1-mesa-glx 18.0.5-0ubuntu0~18.04.1 version.xserver-xorg-core: xserver-xorg-core 2:1.19.6-1ubuntu4 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:18.0.1-1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20171229-1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.15-2 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1794245/+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
