Dell Inspiron 5575

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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

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

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.

Boot

GRUB

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

Display

Screen Corruption

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

Network

Network Manager

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