When you report to Lenovo, it's an important data point that two users on two different OS are experiencing this same issue. If you share the support request, I'll post on it there, as well.
-- Advanced Applications Rod Barnes On Sun, Apr 5, 2026, 7:01 AM Rod Barnes <[email protected]> wrote: > The BIOS was going to be my next effort. :-( > Good luck. Report back if you find a solution, as will I. > > > -- > Advanced Applications > Rod Barnes > > On Sat, Apr 4, 2026, 12:15 PM Cuchet Léo <[email protected]> > wrote: > >> Hello, >> >> Unfortunately, I already am running the latest version of the BIOS >> (R0CN27WW). >> >> I checked BIOS historical modification from their Readme file, but it >> doesn't specify any modifications about keyboard behaviour in the EC >> Firmware part. >> >> I think I'll end up contacting Lenovo support directly, and hope they >> have a fix for it. >> >> But still, thank you for trying to help ! >> >> -- >> You received this bug notification because you are subscribed to the bug >> report. >> 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 >> >> -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2146485 Title: IdeaPad Slim 5 16AKP10 (83HY): intermittent keyboard keystroke drops at i8042 kernel driver level To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2146485/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
