adil192/Dell Inspiron 7415 2-in-1 2021 (Ryzen 5000) on Linux Pop!_OS 21.04.md

## auto-tpfix.sh
#!/bin/bash

gdbus monitor -y -d org.freedesktop.login1 |
  while read x; do
    if [[ "$x" == *"{'LockedHint': <false>}"* ]]; then
      # screen was unlocked
      sudo /sbin/rmmod i2c_hid_acpi
      sudo /sbin/rmmod i2c_hid
      sudo /sbin/modprobe i2c_hid
      sudo /sbin/modprobe i2c_hid_acpi
    fi
  done

## Dell Inspiron 7415 2-in-1 2021 (Ryzen 5000) on Linux Pop!_OS 21.04.md

      
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              Dell Inspiron 7415 2-in-1 2021 (Ryzen 5000) on Linux Pop!_OS 21.04.md
            
          
    Dell Inspiron 7415 2-in-1 2021 (Ryzen 5000) on Linux Pop!_OS 21.04

My Specs


CPU: Ryzen 5 5500U
RAM: Corsair 32GB (2x16GB) 2666MHz, upgraded from 8GB (2x4GB) 3200MHz
Storage: Crucial P2 CT1000P2SSD8 1TB M.2 SSD (Amazon link, was on sale for £60), upgraded from 256GB
Optional features: With fingerprint, With backlit keyboard, With Dell PN350M stylus
Installed Pop!_OS 21.04 (non-Nvidia variant), now on 21.10

Working


Sound
Camera
Wifi, Bluetooth
Sliders for screen brightness and keyboard backlight brightness (along with their buttons on the keyboard)
Touchpad gestures: three- and four-finger swipes; scrolling with two fingers and scrolling on the side of trackpad; pinch to zoom gesture
Touchscreen, stylus
Auto rotation started working after I upgraded my kernel to 5.14.
Pop on Wayland: Set WaylandEnable to true with sudo nano /etc/gdm3/custom.conf, then reboot. Before typing in your password, click the cog icon at the bottom right to select Wayland. This gives you much better touchscreen controls in Firefox, for example.

Update: I'm no longer using Wayland as I think it was breaking auto-rotation (not confirmed).


Working partially/with config

Suspend issues


Most suspend issues are fixed after a kernel update. (I'm on kernel 5.15 at the time of writing)


After coming out of suspend, the touchpad loses its acceleration, and gestures/scrolling stops working. Sometimes the touchpad stops working completely.

Copy the attached auto-tpfix.sh into your home folder.
Then run nano ~/.profile and add the following lines to the end:
# fix touchpad after suspend
nohup ~/auto-tpfix.sh &

Add the relevent commands to the sudoers file so that the auto-tpfix script can run without needing you to type in your password: run sudo visudo and add these lines at the end. Replace "yourusername" with your username.
# allow tpfix
yourusername ALL = NOPASSWD: /sbin/rmmod i2c_hid_acpi, /sbin/rmmod i2c_hid, /sbin/modprobe i2c_hid, /sbin/modprobe i2c_hid_acpi


Fingerprint


I don't think all of this is necessary but I got fingerprint working with sudo apt install fprintd libpam-fprintd libfprint-2-dev and installing the (0.6 deb) driver from Dell: http://dell.archive.canonical.com/updates/pool/public/libf/libfprint-2-tod1-goodix/.
Then register fingerprints in the Settings app (Users tab).


I haven't been able to get my right index and middle finger registered but my other fingers work, for some reason.


Not working

2-in-1 Disabling keyboard


The keyboard should turn off when the screen is flipped over 180 degrees. However on pop, it is only disabled when you're fully in "tablet" mode. This makes the "stand" mode almost unusable.

Misc


Enable lvfs-testing to get ready for future firmware updates.
sudo fwupdmgr enable-remote lvfs-testing
sudo fwupdmgr refresh
sudo fwupdmgr update


I set my laptop to lock (not suspend) when I close the laptop lid, and suspend after having been closed for 30 minutes when not charging.


To do this, first edit your /etc/systemd/logind.conf file, and insert the following lines at around line 25. You can check the guide I used to see the other options.
HandleLidSwitch=lock
HandleLidSwitchExternalPower=lock
HandleLidSwitchDocked=ignore


Now in the Settings app > Power > Automatic Suspend, enable the "On Battery Power" checkbox and set the delay to 30 minutes (or whatever you want).
	#!/bin/bash

	gdbus monitor -y -d org.freedesktop.login1 \|
	while read x; do
	if [[ "$x" == "{'LockedHint': <false>}" ]]; then
	# screen was unlocked
	sudo /sbin/rmmod i2c_hid_acpi
	sudo /sbin/rmmod i2c_hid
	sudo /sbin/modprobe i2c_hid
	sudo /sbin/modprobe i2c_hid_acpi
	fi
	done