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+--- Thread: Trackpad not working for legacy protocols? (/showthread.php?tid=8280)
Trackpad not working for legacy protocols? - danielt - 11-11-2019
I've been experimenting with the mainlain kernel that tsys has been working on. One thing I picked up on is that the trackpad goes pretty crazy (point movement is completely wrong and keeps jumping the mouse cursor to top left) unless CONFIG_HID_MULTITOUCH is set in the kernel config.
When CONFIG_HID_MULTITOUCH isn't set the kernel should be falling back to legacy (mouse) protocols. I haven't looked very deeply at this point I am suspicious that the trackpad firmware simply isn't implementing the fallback protocols properly... so I wanted to check if this is a known bug (or a plausible theory)?