I've done more research and found that this problem in one form or another (touchpad recognized as wheel mouse on various machines with various linux versions) goes back years - some reports date to 2006. I don't know quite what to make of that yet, being new to Linux, but this report should probably be marked as a duplicate of e.g. 418282, which describes the problem with Asus machines and Elantech touchpads. That report also indicates that using tpconfig to determine the touchpad type is useless, so in fact despite a lot of searching I don't really know what kind of touchpad I have nor how to go about determining it. I know that this problem affects other Acer 5738 users, as I've seen recent Ubuntu forum posts about it, but no one seemed to have reported it as a bug.
-- Touchpad not properly recognized on Acer Aspire 5738 https://bugs.launchpad.net/bugs/506502 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs