Sluggish i2c-SYNA328b

[d-graz]

Sluggish i2c-SYNA328b

[d-graz]

While using the trackpad I later found a buggy behavior : while touch to click was active a simple touch with 1 finger would not work meanwhile a if I kept 1 finger on the trackpad and clicking with another one sometimes resulted in an actual click

[d-graz]

While browsing I found this comment of a user having similar issues whit my same hardware.
To summarize instead of having VoodooI2C + VoodooRMI to control the trackpad, VoodooI2C + VoodooHID (enables only the touchscreen) + VoodooELEAN (touchscreen now disabled but great trackpad experience) was used to control the hardware.
I personally don't know why VoodooELEAN would enable a SYNA trackpad, so I think furthermore investigation are needed. I'm marking this as closed since my trackpad is now working very well.

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NB if you decide to use VoodooI2C + VoodooHID + VoodooELEAN + SSDT-XOSI you will have problems after sleep because of a driver swap when waking up from sleep. In order to fix that you have to disable SSDT-XOSI and opt for a more granular solution to bypass I2C _OSYS check. See Create OSYS Variable Under I2C Scope