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Degr
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Joined: 05 Aug 2021
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 Posted: Sun Aug 08, 2021 3:29 am Post subject: Black screen with mouse pointer after logging in with SDDM |
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Hey guys,
I've been wanting to start experimenting around with gentoo for quite a while so I thought I'd give it a try and install it in a virtual machine.
The install went perfectly.
After installing everything that I needed, I rebooted to try to log into the desktop environment, everything went smoothly I got the regular SDDM login, but after that I put in my password I received a black screen with nothing but my mouse pointer to move around.
I've already tried several things that I found on previous forum posts but none of them worked for me.
Maybe the answer is really simple but I haven't been able to figure it out.
I've used the wiki for everything
the profile that I am using is the /desktop/plasma (stable)
I am using Xorg, SDDM and KDE Plasma
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NeddySeagoon
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| Posted: Sun Aug 08, 2021 1:50 pm Post subject: |
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Degr,
Xorg started properly as root to run SDDM, which is encouraging.
When you log in as your normal user, Xorg gets restarted as that user. elogind does the root things so that that can happen.
Either Xorg is not starting or there is a problem starting plasma.
Somewhere in your /home/<username>/ you will have an Xorg.0.log file. Put that filo onto a pastebin site and post the URL. Its too big for a post.
wgetpaste can help.
You will also have a /var/log/Xorg.0.log file, which shows what happened when root started Xorg. We know that worked, so its not the one we need.
Post your output too please.
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NeddySeagoon
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Degr
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Joined: 05 Aug 2021
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| Posted: Sun Aug 08, 2021 3:49 pm Post subject: |
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Hey there, Neddy!
Thank you for replying, I am currently compiling firefox so it'll take me a bit to send all of the info.
If it's of any help I installed Xfce and it works perfectly fine if I start it using startx, if I try logging in with SDDM it'll just give me a black screen.
I'll get back to you with the pastebin ASAP!
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NeddySeagoon
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| Posted: Sun Aug 08, 2021 5:39 pm Post subject: |
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Degr,
That's useful info. If startx works as your normal user, its not a permissions probllem, nor is it an Xorg issue.
Its related to whatever SDDM does after you log in.
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NeddySeagoon
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Degr
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Joined: 05 Aug 2021
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| Posted: Sun Aug 08, 2021 6:25 pm Post subject: |
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| NeddySeagoon wrote: | Degr,
Xorg started properly as root to run SDDM, which is encouraging.
When you log in as your normal user, Xorg gets restarted as that user. elogind does the root things so that that can happen.
Either Xorg is not starting or there is a problem starting plasma.
Somewhere in your /home/<username>/ you will have an Xorg.0.log file. Put that filo onto a pastebin site and post the URL. Its too big for a post.
wgetpaste can help.
You will also have a /var/log/Xorg.0.log file, which shows what happened when root started Xorg. We know that worked, so its not the one we need.
Post your output too please. |
I sincerely apologise, I wasn't able to find the Xorg.0.log (I've went through all of the /home/username/ directories and even used the find command the only thing that came up was the /var/log/Xorg.0.log file) file and firefox failed to compile so i couldn't properly copy and paste the outputs that you've asked into a pastebin, I have taken some screenshots hopefully that's okay.
https://imgur.com/a/rdyvrPD
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Degr
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Joined: 05 Aug 2021
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| Posted: Sun Aug 08, 2021 6:43 pm Post subject: |
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Also I have no idea what could've went wrong with SDDM, I have installed it according to the wiki. only thing that I could think of is that I have both xdm and display-manager running
EDIT: I would also like to specify that I did launch the startx from my root user. I apologise for not trying to earlier it with my regular user. as soon as my current emerge finishes compiling I'll try it with my regular user and I'll reply with the results
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NeddySeagoon
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| Posted: Sun Aug 08, 2021 6:58 pm Post subject: |
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Degr,
You missed my wgetpaste hint.
Its a command line utility that puts files and command line output on the web. You only post the URL you get back.
Pastes don't last very long but helpers will quote interesting bits is their replies so that future readers can benefit too.
Hmm. Your USE settings are missing elogind, suid and systemd. You need one of them for Xorg to start as a user.
Your profile is default/linux/amd64/17.1 Thats not wrong but you will need to select a lot of use flags for yourself.
To see what I mean, run now and make a note of your use flags.
Now choose the | Code: | | default/linux/amd64/17.1/desktop |
profile and run again.
Compare the USE flags that the new profile has added.
Now look at the output of | Code: | | emerge -pvuND @world |
to see what would happen to your system if you actually used that profile.
The will be new packages and rebuilds with new USE settings.
That's a much better place to start for a GUI install.
So far, you haven't changed anything. You can reset the profile if you wish and add USE flags on a per package package basis.
Its your Gentoo, your way.
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NeddySeagoon
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Degr
n00b
Joined: 05 Aug 2021
Posts: 20
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| Posted: Sun Aug 08, 2021 7:25 pm Post subject: |
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| NeddySeagoon wrote: | Degr,
You missed my wgetpaste hint.
Its a command line utility that puts files and command line output on the web. You only post the URL you get back.
Pastes don't last very long but helpers will quote interesting bits is their replies so that future readers can benefit too.
Hmm. Your USE settings are missing elogind, suid and systemd. You need one of them for Xorg to start as a user.
Your profile is default/linux/amd64/17.1 Thats not wrong but you will need to select a lot of use flags for yourself.
To see what I mean, run now and make a note of your use flags.
Now choose the | Code: | | default/linux/amd64/17.1/desktop |
profile and run again.
Compare the USE flags that the new profile has added.
Now look at the output of | Code: | | emerge -pvuND @world |
to see what would happen to your system if you actually used that profile.
The will be new packages and rebuilds with new USE settings.
That's a much better place to start for a GUI install.
So far, you haven't changed anything. You can reset the profile if you wish and add USE flags on a per package package basis.
Its your Gentoo, your way. |
Oh, I wasn't sure what wgetpaste does, thank you for explaining.
Now, I had installed elogind initially and it's service is still running at boot so I am not too sure what went wrong there. And, I will make sure to take a look at what the different use flags.
I was using the default/linux/amd64/17.1 profile for the Xfce DE not for Plasma initially I was using the default/linux/amd64/17.1/desktop/plasma (stable) profile.
I just wanted to add that startx will not boot under my regular user. I have the screenshots right here: https://imgur.com/a/yN6X3Ss. Again, I apologise for not using wgetpaste I had taken them just before I've seen your reply and right now, I'm trying to retrace my steps to see maybe I have missed something in the KDE installation manual.
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NeddySeagoon
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| Posted: Sun Aug 08, 2021 9:13 pm Post subject: |
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Degr,
There is a difference between having a package installed and building things to depend on it.
Lets look at xorg-server.
| Code: | $ eix xorg-server
[I] x11-base/xorg-server
Available versions: 1.20.11(0/1.20.11)^t{tbz2} (~)1.20.11-r2(0/1.20.11)^t (~)1.20.11-r3(0/1.20.11)^t (~)1.20.12(0/1.20.12)^t{tbz2} **9999(0/9999)*l^t {debug dmx doc +elogind ipv6 kdrive minimal selinux suid systemd test +udev unwind wayland xcsecurity xephyr xnest xorg xvfb} |
It wants elogind by default. Thats what the +elogind means. Your log shows Cannot open /dev/tty0 (Permission denied) which is typical of Xorg not having the right permissions to set up the console. That's also why it works as root.
What does | Code: | | emerge -pv xorg-server |
show?
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NeddySeagoon
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Degr
n00b
Joined: 05 Aug 2021
Posts: 20
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| Posted: Sun Aug 08, 2021 9:24 pm Post subject: |
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Hey, I would like to thank you for your patience with me.
I am still really new to gentoo and this entire process has been pretty difficult but it's helping me learn more about gentoo and how it works
Here's the output:
| Code: |
# emerge -pv xorg-server
These are the packages that would be merged, in order:
Calculating dependencies ... done!
[ebuild R ] x11-base/xorg-server-1.20.11:0/1.20.11::gentoo USE="elogind ipv6 udev wayland xorg -debug -dmx -doc -kdrive -minimal (-selinux) -suid -systemd -test -unwind -xcsecurity -xephyr -xnest -xvfb" 0 KiB
Total: 1 package (1 reinstall), Size of downloads: 0 KiB
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NeddySeagoon
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| Posted: Sun Aug 08, 2021 9:33 pm Post subject: |
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Degr
That's correct. USE="elogind ...
Is elogind in the default runlevel?
| Code: | | rc-update --verbose show |
will tell.
If not, add it and start the service, then try startx as your normal user again.
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NeddySeagoon
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NeddySeagoon
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| Posted: Sun Aug 08, 2021 9:45 pm Post subject: |
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Degr,
That looks good too.
Post the log with wgetpaste. Its much easier to read. I'll look at it in the morning (my time).
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NeddySeagoon
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Degr
n00b
Joined: 05 Aug 2021
Posts: 20
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| Posted: Sun Aug 08, 2021 9:47 pm Post subject: |
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Hey, I added it to the default runlevel but when I tried to startx it wouldn't start.
Here's the pastebin:
http://dpaste.com/2PHAK8YMC
EDIT: Sorry for deleting some of my previous messages kinda freaked out that I sent the wrong thing.
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Degr
n00b
Joined: 05 Aug 2021
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| Posted: Mon Aug 09, 2021 7:14 pm Post subject: |
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I have also found that Xorg is running under the root user shouldn't it be running under the regular user?
| Code: |
$ ps -fC X
UID PID PPID C STIME TTY TIME CMD
root 2627 2570 0 21:38 tty7 00:00:00 /usr/bin/X -nolisten tcp -auth /var/run/sddm/{c0740052-d262-4163-9151-fe7dd7c172e0} -background none -noreset -displayfd 17 -seat seat0 vt7
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NeddySeagoon
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| Posted: Mon Aug 09, 2021 7:35 pm Post subject: |
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Degr,
Xorg runs as root when it displays the login screen. It does not yet know the user you will log in as.
Once you log in, Xorg is restarted as the user you log in as.
The answer to your question is that it depends when you look.
Xorg stared at time
Its saving the log in | Code: | | [ 526.829] (==) Log file: "/home/degr/.local/share/xorg/Xorg.1.log", Time: Mon Aug 9 00:46:21 2021 |
so we know that its running as user degr. Roots log goes to /var/log but users have no write access there.
| Code: | | [ 528.303] (II) Server terminated successfully (0). Closing log file. |
so one and a half seconds after Xorg started, it shut down normally.
Other than that, it looks OK.
Xorg behaves like this this when is not told what to do. How did you configure SDDM to start your desktop session?
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NeddySeagoon
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Degr
n00b
Joined: 05 Aug 2021
Posts: 20
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| Posted: Mon Aug 09, 2021 7:56 pm Post subject: |
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Hey, I have followed the SDDM wiki page for it's installation
Here's my /etc/sddm.conf file
| Code: |
[X11]
DisplayCommand=/etc/sddm/scripts/Xsetup
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My /etc/sddm/scripts/Xsetup
and my /etc/conf.d/display-manager
| Code: |
# We always try and start the DM on a static VT. The various DMs normally
# default to using VT7. If you wish to use the display-manager init
# script, then you should ensure that the VT checked is the same VT your
# DM wants to use.
# We do this check to ensure that you haven't accidentally configured
# something to run on the VT in your /etc/inittab file so that
# you don't get a dead keyboard.
CHECKVT=7
# What display manager do you use ?
# [ xdm | greetd | gdm | sddm | gpe | lightdm | entrance ]
# NOTE: If this is set in /etc/rc.conf, that setting will override this one.
DISPLAYMANAGER="sddm"
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