[Bug 2146485] Re: IdeaPad Slim 5 16AKP10 (83HY): intermittent keyboard keystroke drops at i8042 kernel driver level

Ok, thank you for sharing, I'll try with AI, maybe it will help. However, the problem seems to be very common on these laptop. In this article, a lot of people report the same issue on the same laptop : https://www.reddit.com/r/Lenovo/comments/1qgzkby/consumer_warning_lenovo_ideapad_slim_5_14akp10/ -- You received this bug notification because you are subscribed to linux in Ubuntu. Matching subscriptions: Bgg, Bmail, Nb https://bugs.launchpad.net/bugs/2146485 Title: IdeaPad Slim 5 16AKP10 (83HY): intermittent keyboard keystroke drops at i8042 kernel driver level Status in linux package in Ubuntu: Confirmed Bug description: On a Lenovo IdeaPad Slim 5 16AKP10 (model 83HY), the built-in keyboard intermittently begins dropping keystrokes after a variable uptime (sometimes hours, sometimes days). The issue clears on reboot and does not persist across power cycles. Hardware: System: Lenovo IdeaPad Slim 5 16AKP10 (83HY) BIOS: R0CN22WW OS: Linux Mint 22.3 Kernel: 6.17.0-14-generic and 6.17.0-19-generic (issue present on both) Diagnosis: evtest confirms keystroke drops are occurring at the kernel input driver level, not in X11 or the compositor dmesg shows no i8042 errors during affected sessions /proc/interrupts shows normal i8042 interrupt counts during the problem Memory, swap, CPU load, and thermals are all normal during affected sessions The i8042 module is built-in and cannot be reloaded to recover without a full reboot Boot parameter i8042.nopnp (added based on kernel warning at boot: "PS/2 appears to have AUX port disabled, if this is incorrect please boot with i8042.nopnp") improved perceived keyboard latency but did not prevent recurrence of drops TLP 1.6.1 is installed and manages power; forcing USB autosuspend to "on" during an affected session did not resolve the issue $ cat /proc/interrupts | grep i8042 1: 0 28512 0 0 0 0 0 0 0 0 0 0 0 0 0 0 IR-IO-APIC 1-edge i8042 Kernel boot messages: i8042: PNP detection disabled serio: i8042 KBD port at 0x60,0x64 irq 1 input: AT Translated Set 2 keyboard as /devices/platform/i8042/serio0/input/input2 Current kernel cmdline: quiet splash kvm.enable_virt_at_load=0 i8042.nopnp Expected behavior: Keyboard input should be reliable throughout a session without requiring a reboot to restore normal function. Workaround: Reboot restores normal keyboard function until the issue recurs. Possibly significant point: I am a fast typist but I experience this even when typing very slowly. Attached archive contains: $ cat /proc/version_signature > ~/version.log $ sudo lspci -vnvn > ~/lspci-vnvn.log $ sudo dmesg > ~/dmesg.log $ cat /proc/interrupts > ~/interrupts.log To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2146485/+subscriptions