This has been tested with live ubuntu 19.10 as suggested by Daniel and the mouse problem persists for intel braswell. xdotool reveals that X reports a vertical position of zero, even when the mouse is painted with an offset to the right, which seems to indicate this is could be a compositor problem, a mouse driver problem (not providing proper movement info to the left), or a 915 driver problem
This has been tested with live ubuntu 19.10 as suggested by Daniel and the mouse problem persists for intel braswell. xdotool reveals that X reports a vertical position of zero, even when the mouse is painted with an offset to the right, which seems to indicate this is could be a compositor problem, a mouse driver problem (not providing proper movement info to the left), or a 915 driver problem