Dell Inspiron 5575

This is an install and configuration guide for the Dell Inspiron 15 000 Series (Model 5575) laptop, Ryzen 5 2500U with Vega Mobile graphics.

Hardware	PCI/USB ID	Working?
Touchpad		Yes
Keyboard		Yes
Video	`1002:15dd`	Yes
Webcam	`1bcf:28c1`	Yes
Ethernet	`10ec:8136`	Yes
Bluetooth		Yes
SD-Card slot	`0bda:0129`	Yes
Audio	`1002:15de`	Yes
Wireless	`168c:0042`	Yes
TPM		Untested

See the Laptop/Dell chart for information on other Dell laptops.

Installation

See Installation guide.

Configuration

X

Make sure you enable the TearFree option in the xorg file configuration (i.e, /etc/X11/xorg.conf.d/10-amdgpu.conf).

Section "Device"
	Identifier "AMD" 
	Driver "amdgpu"
	Option "TearFree" "true"
EndSection

Troubleshooting

Along with this section, check AMDGPU#Loading as well.

Booting in blind mode error

Add the line

insmod all_video

in your grub.cfg

Screen freezes

The boot process normally gets stuck at certain point of the boot process and the cursor blinking stops. You can check if the caps lock LED still works. If that's the case, it means that only the amdgpu driver is gone. The rest of the system will be functional, meaning:

You can ssh to that machine
You can perform login and some debugging commands in blind mode, dumping their output into some files in the hard disk for posterior checks.

The solution is to disable Legacy Boot in the BIOS, so the UEFI mode will be the one used to boot. Tested with Secure Boot turned off

Screen Corruption

Running the linux 5.2 kernel can cause screen corruption/scrambling. Passing iommu=soft as kernel parameter fixes the issue.

Wifi card does not work after sleep

When left idle, Network Manager will save power by suspending Radio Activity. Suspending the laptop during this state will make it hard/impossible to enable the wifi after waking up. The solution is to turn off Network Manager power saving feature. Create `/etc/NetworkManager/conf.d/10-wifi-powersaving-off.conf` with the following contents:

[connection]
wifi.powersave = 2

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