Trailing 20-7 at halftime, the Jaguars closed to 23-20 early in the fourth quarter on Maurice Mayo's 5-yard TD run, but Smith hit Adrian Hardy on an 8-yard pass on the next Bulldog possession for a 30-20 lead.
Dancy gained 144 yards on 15 carries while Smith was 19 of 29 for 209 yards passing with three interceptions.
Under first-year coach Steve Campbell, the Jaguars were outgained 264 total yards to 98 in the first half, but finished with 308 to Louisiana Tech's 440.
Garvin was 7 of 16 for 47 yards passing. Baker also scored on 4-yard run.
NFL draft profile: Jarrett Stidham
Auburn's Jarrett Stidham has adequate size, good arm strength, above-average mobility and can drive the ball vertically down the field.
NFL draft profile: Zach Allen
BC's Zach Allen is a good run-defender who locates the ball and disengages in time to pursue and converts speed to power as a pass-rusher.
NFL draft profile:Clelin Ferrell
Clemson's Clelin Ferrell is a versatile pass-rusher with good initial quickness, flexibility and closing speed.
49ers scout, ex-NFL RB Reggie Cobb dies at 50
Running back Reggie Cobb, who starred at the University of Tennessee and playing in the NFL for the Bucs, Packers, Jaguars and Jets over seven seasons, has died at the age of 50.
Bulldogs show energy in spring game
Georgia head coach Kirby Smart discusses the takeaways from G-Day and how his team prepares to open the season with SEC play.
Richt: 'Not in the plans' to return to coaching
Former Miami coach Mark Richt said he stepped away after last season because "it was the right time for me as a person" and that it is "not in the plans" to return to coaching.