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points by JdeBP 1 day ago | 0 comments

If those are Elantech or Synaptics touchpads, then this is the bug report to get behind:

I think that it is specifically the interaction between ihidev and ACPI. The hardware devices themselves are PS/2, with a vendor-specific extension to PS/2 activated by a special handshake, plus I2C. (On machines from 2024 that come with 9 USB root hubs; such is the inertia of laptop design.)

[–] osmsucks 6 hours ago

My scant research on the touchpad situation tells me that this laptop (TUXEDO InfinityBook 14 Pro) is likely a repackaged UNIWILL IDL (https://www.uniwill.com.tw/?page_id=16918). On Linux, the touchpad is probably handled by the i2c_hid module and I think OpenBSD has sys/dev/i2c/imt.c that might handle it (NetBSD has sys/dev/i2c/ims.c, but no sys/dev/i2c/imt.c).