Arch Linux

rhymen

Member

Registered: 2020-08-04

Posts: 5

Plymouth with amdgpu

Hey there,

I'm trying to setup plymouth, but as soon as I add the splash kernel parameter, I am stuck with a black screen after boot. Lightdm is not showing the greeter. Some issues on the web suggest to switch the tty session or to try to blindly type the password, but this doesn't seem to work for me either.

Here are my config files.

/etc/mkinitcpio.conf
MODULES=(amdgpu)
HOOKS=(base udev plymouth autodetect modconf block filesystems keyboard resume fsck)

/etc/default/grub
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash loglevel=3 amdgpu.modeset=1 rd.systemd.show_status=auto udev.log_priority=3 vga=current vt.global_cursor_default=0 resume=UUID=1f05b97f-3636-4d18-b28c-b40acf132dbc"

Otherwise I only stopped the lightdm service and started the lightdm-plymouth service.

This url suggests setting the `amdgpu.modeset=1` parameter, but it didn't help (if you are wondering why its there).
In the german arch wiki there is no mention of the amdgpu driver, does this mean its not supported? The official wiki doesn't mention any driver but the intel one, so I guess that's no help either. I found some issues on the web from 2018 saying an upstream fix from the amdgpu driver is necessary, but I am not sure if that is still / at all true and I can't find the link again.

For reference, I'm using a HP Envy x365 13 with an AMD Radeon RX Vega 10.

Thanks for your help!

d_fajardo

Member

Registered: 2017-07-28

Posts: 1,687

Re: Plymouth with amdgpu

Try plymouth-git. I had some issues with plymouth before too, though I'm using nvidia, but the symptoms are the same as yours - black screen and no greeter.

icar

Member

Registered: 2020-07-31

Posts: 562

Re: Plymouth with amdgpu

Check the package's AUR webpage. There have been some changes due to the last update.

IIRC, it was just using the standard LightDM service

Last edited by icar (2020-08-22 20:58:18)

rhymen

Member

Registered: 2020-08-04

Posts: 5

Re: Plymouth with amdgpu

Thanks for the replies guys! After installing the plymouth-git version everything worked fine. Seems like trying the -git version on aur should be on my "to try if something not works" list.

d_fajardo

Member

Registered: 2017-07-28

Posts: 1,687

Re: Plymouth with amdgpu

@rhymen It is customary to mark threads 'Solved' whenever a solution is found. This helps others searching the forum for solutions.