Black screen with DDE on boot

Oxydiur · 2021-12-24 18:18:23

Hello,

I've been trying to install Arch with Deepin Desktop Environment (DDE)

When I try to boot Arch after a full clean install without any DE, it works perfectly. But if I install deepin packages, I get black screens on boot no matter what I do. I can only open the debug console.

I suspect it's related to nvdia drivers & my GPU, but wasn't able to solve it, nor find a clear fix on google. My GPU is a GTX 1070

Those are the packages I installed:

pacman -S xorg xorg-server deepin deepin-extra nvidia nvidia-utils

I also altered as docu requested:

nano /etc/lightdm/lightdm.conf

greeter-session=lightdm-deepin-greeter

and enabled:

systemctl enable lightdm.service

Screen remains black after booting on Arch post-Grub selection. Thank you kindly for any solution.

Zod · 2021-12-25 01:15:08

https://wiki.archlinux.org/index.php/Li … TTY_output

https://wiki.archlinux.org/index.php/Ke … _KMS_start

<my problem> site:bbs.archlinux.org

Is a good way to use google to search the Arch forums for similar problems.

Last edited by Zod (2021-12-25 01:17:00)

seth · 2021-12-25 07:56:32

It's probably not (only) KMS, though
=> https://bbs.archlinux.org/viewtopic.php … 0#p2010380

Oxydiur · 2021-12-25 14:51:45

Merry christmas,

logind-check-graphical=true

This made absolutely no difference. I tried a second time with Anarchy Linux installer (in case I was doing something wrong with the command prompt), installed DDE, and the issue is still the same. With or without the aforementioned edits in lightdm.conf

Whenever my GPU tries to display the desktop, I can see the "video signal" but the screen is fully black. Then I can only ctrl+alt+F2/F3/F4 to the prompt, which works correctly.

I can boot sucessfully with KDE Plasma, so I suspect there's something wrong with the latest DDE/nvidia/lightdm packages and my GPU (gtx 1070), unless I'm missing something obvious. I'm using the latest available versions for all.

I tried both nvidia & nvidia-dkms drivers as well (not at the same time), this made absolutely no difference.

Last edited by Oxydiur (2021-12-25 15:04:45)

seth · 2021-12-25 18:41:30

Did you see the other thread? There seems to be an issue w/ the deepin greeter specifically.

Oxydiur · 2021-12-28 01:07:53

Greetings,

I've been trying reaaaally hard to solve my issue, and spent countless hours trying to figure out what was wrong.

As it turns out, I managed to boot succesfully on DDE with ArchLinux after editing several things ... but only once. I "forgot" what things I was trying, but at least it rules out the "impossibility".

I was able to narrow down my problem to XORG that is unable to start.

Running:

xrandr

returns "can't open display"

In fact, the only time I was able to start DDE was when I typed startx (but I forgot what I did to make it work. Anyway, it wouldn't work unless I inputed startx manually everytime). Doing so would boot the DDE immediately.

I welcome any kind of help at that point. I have a 2700x and a gtx1070, so I don't have an integrated chipset to mess things up. I'm installing my ArchLinux distro on a separated dedicated SSD. Yet, xrandr acts as if it couldn't detect my screen, which is linked through a DisplayPort.

Did you see the other thread? There seems to be an issue w/ the deepin greeter specifically.

Seems unrelated now. My issue clearly lies with xorg failing to initiate.

Last edited by Oxydiur (2021-12-28 01:18:09)

seth · 2021-12-28 08:19:44

It is either earlykms (which is also covered by the key you supposingly added in #4, but still see the 2nd link Zod posted) or the deepin greeter.
Since there *is* an active report reg. the latter the minimum effort you could bring up here is to try the behavior of the gtk greeter to make sure that you're not fighting 2 bugs at once.

I have a 2700x and a gtx1070

Are outputs connected to both of them? Otherwise and unless you configured the X11 server to pick the "right" one, you might be running the server on the other GPU and just not see it.

Please post some xorg log(s)

Ftr, running xrandr on a TTY w/o pointing it to a running X11 server won't work - that proves nothing.

Arch Linux

#1 2021-12-24 18:18:23

Black screen with DDE on boot

#2 2021-12-25 01:15:08

Re: Black screen with DDE on boot

#3 2021-12-25 07:56:32

Re: Black screen with DDE on boot

#4 2021-12-25 14:51:45

Re: Black screen with DDE on boot

#5 2021-12-25 18:41:30

Re: Black screen with DDE on boot

#6 2021-12-28 01:07:53

Re: Black screen with DDE on boot

#7 2021-12-28 08:19:44

Re: Black screen with DDE on boot

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