[Bug 286445] atkbdc: elantech touchpad doesn't work on system76 serw13
Date: Wed, 16 Jul 2025 21:21:59 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=286445
Jordan Gordeev <jgopensource@proton.me> changed:
What |Removed |Added
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CC| |jgopensource@proton.me
--- Comment #1 from Jordan Gordeev <jgopensource@proton.me> ---
(In reply to Seyed Pouria Mousavizadeh Tehrani from comment #0)
Thank you for the very good problem report!
The ietp(4) driver has an embedded list of devices it supports. You can see it
in src/sys/dev/hid/ietp.c when you search for "ietp_iic_devs". Try adding an
entry for your touchpad to that list. Based on the attached acpidump output
"ELAN0412" is the identifier you should use. The idea is to make the driver
stop rejecting the touchpad as a device it doesn't recognize. Whether the
driver can successfully drive the actual hardware that you have remains to be
seen.
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