As requested I downloaded the latest build and ran it from USB. After selecting hybrid graphics in BIOS I booted up and was delighted to see no mouse trails on the 2nd monitor!
I then rebooted back into 16.04 leaving hybrid graphics selected - no mouse trails! I think there was an Intel firmware update a week or two ago that I got on Windows, maybe it updated the Intel graphics firmware? Whatever happened I am happy to say that I cannot now duplicate the problem and hybrid graphics seems to be working properly in both 16.04 and 17.10. Thanks for your help. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1664397 Title: Mouse trails and distorted cursor on 2nd monitor To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1664397/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : [email protected] Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp

