Quick proof that it's related to the palm touch. Run:
tail -f /var/log/kern.log
Touch your palm to the touchpad, and notice the lost sync messages start flying. Remove the palm, and notice them stop. I'm unable to do anything else that causes the lost sync messages.
A possible hypothesis is that the touchpad sends a particular message upon palm detection that the driver doesn't read correctly. The symptoms are similar to what I would expect if it read more (or less) than a single packet, failed a checksum, then had to re-sync. This happens in a loop as long as one's palm is in contact.
Quick proof that it's related to the palm touch. Run:
tail -f /var/log/kern.log
Touch your palm to the touchpad, and notice the lost sync messages start flying. Remove the palm, and notice them stop. I'm unable to do anything else that causes the lost sync messages.
A possible hypothesis is that the touchpad sends a particular message upon palm detection that the driver doesn't read correctly. The symptoms are similar to what I would expect if it read more (or less) than a single packet, failed a checksum, then had to re-sync. This happens in a loop as long as one's palm is in contact.