Scroll lag

[JerryMungo]

.

 

[oldhat]

Are you experiencing scroll lag throughout the OS, or in specific applications?

 

[CT_Biker]

Try using Gnome with Wayland instead of Xorg

 

[oldhat]

Good q. I see it more evident in the browser, but definitely throughout - to a lesser extent in some regular gnome tools like files. It's there, just less evident. It's there minimally in the terminal as well. It feels kind of like the mouse in general to be honest. You move your finger on the track pad and a split second later the cursor comes to a stop. There's definitely some latency that I'm not familiar with. The majority of my desktop experience is Mac and PC - I usually work on Linux systems without desktop.

Is it the same when using a mouse(preferably wired)? What hardware are you using? Just tried an old Celeron Laptop with 4Gb ram and Intel iGpu & there was no discernible lag with the trackpad with Ubuntu 19.10 or 20.04.

If you check the System Monitor, are there any cpu usage spikes when scrolling?

 

[oldhat]

It seems PS/2 Generic Mouse is active not the synaptics driver... eish. Typical Linux desktop ballache.

Is the synaptics driver installed on your system(to check: apt policy xserver-xorg-input-synaptics)?

 

[oldhat]

It's there by the looks

xserver-xorg-input-synaptics:
  Installed: 1.9.1-1ubuntu3
  Candidate: 1.9.1-1ubuntu3
  Version table:
*** 1.9.1-1ubuntu3 500
        500 http://za.archive.ubuntu.com/ubuntu focal/universe amd64 Packages
        100 /var/lib/dpkg/status

It sure is.

Do you get the same lag if you use the keyboard to scroll(PgUp/PgDn)?