[Bug 2145906] Re: atkbd: Spurious ACK flood on i8042 KBD port causes keyboard key repeat storm on Cepter CCLOUD15R7

** Tags added: kernel-daily-bug

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Title:
atkbd: Spurious ACK flood on i8042 KBD port causes keyboard key repeat
storm on Cepter CCLOUD15R7

Status in linux package in Ubuntu:
New

Bug description:
Hardware: Cepter CCLOUD15R7 (AMD Ryzen 7 5700U)
BIOS version: 24.02 (09/07/2023)
Kernel: 6.14.0-19-generic
Distro: Linux Mint 22.3
Problem:
On boot, the internal keyboard produces continuous uncontrolled key repeat for any key pressed. A single keypress generates a flood of input events. The keyboard works correctly in Windows.
dmesg shows:
atkbd serio0: Failed to deactivate keyboard on isa0060/serio0
atkbd serio0: Failed to enable keyboard on isa0060/serio0
atkbd serio0: Spurious ACK on isa0060/serio0. Some program might be trying to access hardware directly.
(Spurious ACK repeats continuously throughout uptime)
Kernel parameters tried without success:
i8042.reset i8042.nomux i8042.nopnp i8042.noloop i8042.notimeout i8042.kbdreset=1 atkbd.reset=1
Expected behavior: Single keypress produces single input event.
Actual behavior: Single keypress produces continuous flood of repeat events, making keyboard unusable.

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