[Bug 2152810] Re: Logitech G213 keyboard (046d:c336) secondary HID interface causes garbled key events — Home acts as Delete, right-shift unresponsive

Backlink: https://askubuntu.com/q/1566876/1004020 ** Also affects: udev (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are subscribed to linux in Ubuntu. Matching subscriptions: Bgg, Bmail, Nb https://bugs.launchpad.net/bugs/2152810 Title: Logitech G213 keyboard (046d:c336) secondary HID interface causes garbled key events — Home acts as Delete, right-shift unresponsive Status in linux package in Ubuntu: New Status in udev package in Ubuntu: New Bug description: The Logitech Gaming Keyboard G213 (USB ID 046d:c336) exposes two HID interfaces, both registered as keyboard input devices (event2 and event3 / input0 and input1). The secondary interface (bInterfaceNumber 01, event3) generates conflicting and garbled escape sequences that interfere with events from the primary interface. Symptoms observed after upgrading to Ubuntu 26.04 LTS (kernel 7.0.0-15-generic; actually Kubuntu, upgrade was via `do-release-upgrade` so was not a fresh install; using the default Wayland, not X11): - Home key triggers ^[[3~ (Delete escape sequence) instead of moving to start of line/list - Right-shift key not recognised (libinput reports keycode -1) - End key works correctly on the primary interface but event3 also fires conflicting sequences Diagnosis: Running `sudo libinput debug-events /dev/input/event3` while pressing Home, End, and modifier keys produced raw escape sequences (^[[H, ^[[F, ^[[D, ^[[C etc.) confirming that event3 is sending its own independent, conflicting key events. The primary interface (event2) correctly reports KEY_HOME (102) and KEY_END (107), but KEY_HOME is tagged with ^[[3~ due to interference from event3. Workaround: Prior to troubleshooting with Claude.ai I `sudo apt install`-ed `libinput-tools`, and `--reinstall` was done for `udev` and for `kglobalacceld`. The ultimate fix was then creating the following udev rule resolves the issue by telling libinput to ignore the secondary interface: File: /etc/udev/rules.d/99-g213-fix.rules ATTRS{idVendor}=="046d", ATTRS{idProduct}=="c336", KERNEL=="event*", ATTRS{bInterfaceNumber}=="01", ENV{LIBINPUT_IGNORE_DEVICE}="1" After `sudo udevadm control --reload` and unplug then replug of the keyboard, all keys work correctly. According to Claude.ai, a proper fix would be "a hwdb entry or HID quirk for 046d:c336 to suppress or correctly handle the secondary interface, so that G213 users are not affected on clean installs or upgrades". System information: - OS: Ubuntu 26.04 LTS (Resolute Raccoon) - Kernel: 7.0.0-15-generic - Device: Logitech Gaming Keyboard G213, USB 046d:c336, bcdDevice 9.00 - Driver: hid-generic *Claude code used to help with writing this report and finding the bug; https://claude.ai/share/aaba93cf-b551-4ae2-b83a-b22b3c813ff6. Fix confirmed to work for me. I have read through and manually edited and expanded this submission.* ProblemType: Bug DistroRelease: Ubuntu 26.04 Package: linux-image-7.0.0-15-generic 7.0.0-15.15 ProcVersionSignature: Ubuntu 7.0.0-15.15-generic 7.0.0 Uname: Linux 7.0.0-15-generic x86_64 ApportVersion: 2.34.0-0ubuntu2 Architecture: amd64 AudioDevicesInUse:  USER PID ACCESS COMMAND  /dev/snd/controlC2: pbhj 26866 F.... wireplumber  /dev/snd/controlC1: pbhj 26866 F.... wireplumber  /dev/snd/controlC0: pbhj 26866 F.... wireplumber  /dev/snd/seq: pbhj 26860 F.... pipewire CasperMD5CheckResult: pass CurrentDesktop: KDE Date: Sat May 16 22:41:58 2026 InstallationDate: Installed on 2022-08-03 (1383 days ago) InstallationMedia: Kubuntu 22.04 LTS "Jammy Jellyfish" - Release amd64 (20220419) MachineType: Micro-Star International Co., Ltd. MS-7A38 ProcFB: 0 amdgpudrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-7.0.0-15-generic root=UUID=206622ca-abb2-4264-93a0-12f19aed357a ro quiet nosplash PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon. SourcePackage: linux UpgradeStatus: Upgraded to resolute on 2026-05-16 (0 days ago) dmi.bios.date: 09/03/2024 dmi.bios.release: 5.17 dmi.bios.vendor: American Megatrends International, LLC. dmi.bios.version: 8.H4 dmi.board.asset.tag: To be filled by O.E.M. dmi.board.name: B450M PRO-VDH V2 (MS-7A38) dmi.board.vendor: Micro-Star International Co., Ltd. dmi.board.version: 6.0 dmi.chassis.asset.tag: To be filled by O.E.M. dmi.chassis.type: 3 dmi.chassis.vendor: Micro-Star International Co., Ltd. dmi.chassis.version: 6.0 dmi.modalias: dmi:bvnAmericanMegatrendsInternational,LLC.:bvr8.H4:bd09/03/2024:br5.17:svnMicro-StarInternationalCo.,Ltd.:pnMS-7A38:pvr6.0:rvnMicro-StarInternationalCo.,Ltd.:rnB450MPRO-VDHV2(MS-7A38):rvr6.0:cvnMicro-StarInternationalCo.,Ltd.:ct3:cvr6.0:skuTobefilledbyO.E.M.:pfaTobefilledbyO.E.M.: dmi.product.family: To be filled by O.E.M. dmi.product.name: MS-7A38 dmi.product.sku: To be filled by O.E.M. dmi.product.version: 6.0 dmi.sys.vendor: Micro-Star International Co., Ltd. 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