Hi

Below does not seem too arduous, or even black magic....

The jittery pointer on your Inspiron 16 Plus 7620 under Linux is a known issue, most commonly caused by Intel i915 Panel Self Refresh (PSR) interacting badly with the Alder Lake iGPU. The fix that consistently works is to disable PSR via a kernel boot parameter. dell+1

https://www.dell.com/community/en/conversations/inspiron/linux-issues-on-dell-inspiron-16-plus-7620/66d3f02a3c9d6f1b219b1beb

Quick fix: disable i915 PSR

1. Edit GRUB config:

   bash

   sudo nano /etc/default/grub

2. Find the line:

   text

   GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"

3. Change it to:

   text

   GRUB_CMDLINE_LINUX_DEFAULT="quiet splash i915.enable_psr=0"

4. Save, then update GRUB and reboot:

   • On Debian/Ubuntu/Mint:

     bash

     sudo update-grub

   • On some systems you may need:

     bash

     sudo grub-mkconfig -o /boot/grub/grub.cfg

5. Reboot:

   bash

   sudo reboot

After reboot, the cursor should be smooth and stable. dell+1

If the problem persists or you want to go further

1. Ensure you’re not using the legacy Intel Xorg driver

On newer Intel GPUs (Alder Lake, Iris Xe), the xf86-video-intel driver can cause flicker/lag. Prefer the modesetting driver.

• Check if it’s installed:

  bash

  dpkg -l | grep xf86-video-intel # Debian/Ubuntu/Mint pacman -Qs xf86-video-intel # Arch/Artix

• If present, remove it:

  bash

  sudo apt remove xserver-xorg-video-intel # Debian/Ubuntu/Mint sudo pacman -R xf86-video-intel # Arch/Artix

• Ensure xf86-input-libinput is installed (it usually is by default).

Many users with the 7620 report that removing xf86-video-intel eliminates flicker and pointer issues. forum.artixlinux