Comment 53 for bug 1949394

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In , linux.bug.reporting (linux.bug.reporting-linux-kernel-bugs) wrote :

Created attachment 144971
dmesg with i8042.debug & acpi debug when Elantech works

This dmesg is generated with acpi debug & i8042.debug when Elantech is working.

(Whenever Elantech is working, there's always 2 entries for it in dmesg without fail as per this dmesg log. And whenever it doesn't work -- just as per previous dmesg, obviously there won't be any dmesg entry for it. In other words, when it is doesn't work psmouse_extensions() and associates don't even get invoked, as per some printk's I peppered around yesterday. So it's as if there's no Elantech during psmouse probing. I've since abandoned my attempts at studying the problem further, as it was getting too difficult for me to comprehend psmouse*.c, elantech.c etc., although I'm not so easily discouraged, so I might venture into it again during next weekend to understand the path various kernel routines traverse when Elantech is detected/working & they fail to traverse when it isn't detected/working.)

Thanks