Comment 3 for bug 1884981

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You-Sheng Yang (vicamo) wrote : Re: The touchpad soesn't work at all

Please append following kernel boot parameters, reboot and attach output of `journalctl -b`:

  "dyndbg=file drivers/input/* +pt" i8042.debug=1 i8042.nopnp=1 log_buf_len=32M

For detailed steps, please see https://askubuntu.com/questions/19486/how-do-i-add-a-kernel-boot-parameter.