12.04 has smooth scrolling enabled for touchpads with GTK. I was wondering if it could be enabled for mouse wheels too? If yes, how? If not, why not? Thanks.
I wish smooth scrolling could be enabled EVERYWHERE, sadly smooth scrolling can not be enabled for mouse wheels because they have "jumps" whereas the scroll input from a touchpad is precise enough to register pixel-for-pixel motion.
To test this out, fire up a terminal and run
Then place the cursor in the window and scroll up and down. You will notice that the key (button 4 and 5) registers output continually as long as you move your fingers. Now scroll with the click-wheel. It will only register once per mouse-wheel click.
Some mouse-wheels do not have distinct "jumps" when rolling but I'll bet that the hardware reads the distance travelled by the roller, and sends jumps just like other mice to insure hardware compatibility.
While true smooth per-pixel scrolling would not work that well with a mouse scroll wheel, having a smooth animation rather than a sudden jump of three lines would be nice.
I don't know of any way to do that globally but in Firefox it is an option under Preferences->Advanced.
For Chromium/Chrome it is currently enabled via a flag by going to
Whether or not it's a hardware issue depends on the hardware itself... Logitech provides Windows drivers with smooth scrolling for mice with a "free scrolling wheel" (no jumps, just a wheel scrolling event for every pixel).
It'd be really awesome if I could use my M500 to it's full potential, but xev shows the typical jumps after a certain distance, so it's probably a driver issue. Not sure whom to bother and where to fix that.