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Progman3K
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PostPosted: Mon Apr 22, 2019 1:37 pm    Post subject: X (gdm) black screen, nouveau Reply with quote

Hi,

I can't get X to start on a new install.

uname -a
Linux svt 4.19.23-gentoo #4 SMP Tue Mar 5 08:46:00 EST 2019 x86_64 Intel(R) Core(TM) i7-4790 CPU @ 3.60GHz GenuineIntel GNU/Linux

Running
Xorg :0 -configure

gives this output:
https://pastebin.com/FSvwsDXd

dmesg output:
https://pastebin.com/DWZxz8HL

However, if I run
X -config /root/xorg.conf.new -retro

I get a screen with the old-style XWindows grey (black/white moiré) background and the old-style X mouse-pointer. I can move the mouse pointer OK.

X applications CAN be run remotely over ssh.

X just won't start locally.

EDIT
The machine is a DELL desktop. Here is the output of lspci -v

https://pastebin.com/QjbjRBVy


Any help welcome, thank you


Last edited by Progman3K on Mon Apr 22, 2019 2:00 pm; edited 1 time in total
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Jaglover
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PostPosted: Mon Apr 22, 2019 1:52 pm    Post subject: Reply with quote

Quote:
Running
Xorg :0 -configure

Uh, this is how they did it in 19th century. 8O
FYI, it does not even work with KMS - and KMS is mandatory with open source drivers.

Anyhow, you managed to leave out the hardware information. What is it, a desktop? Perhaps a laptop with hybrid graphics?
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Last edited by Jaglover on Mon Apr 22, 2019 2:01 pm; edited 1 time in total
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Progman3K
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PostPosted: Mon Apr 22, 2019 2:00 pm    Post subject: Reply with quote

You mean the 20th century, we're in the 21st century now :-)

All the same, you're right, but I'm not sure how to get X running properly, so I tried the old method.

I've edited the parent with more information in case someone else reads the thread, so they won't have to piece too much of it together.
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Jaglover
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PostPosted: Mon Apr 22, 2019 2:06 pm    Post subject: Reply with quote

I meant 19th century, to emphasize how outdated this approach is. :P

Anyhow, make sure your kernel is configured properly (Gentoo Wiki), log in as user and start X. Make sure there is something set up to run on X, otherwise it will find there is nothing to do and terminate. Do not generate any conf files, these are needed only for fine tuning and you can do it later if needed. Also, make sure you have libinput enabled. It will handle both keyboard and mouse.
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Progman3K
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PostPosted: Mon Apr 22, 2019 3:45 pm    Post subject: Reply with quote

Hi Jaglover,

Oddly enough, even if gdm won't start X, running the startx command results in a graphical screen with three xterms and one xclock running in it with the mouse and keyboard also working...

So it must be close to functional...

I don't get why the greeter won't come up...

EDIT: One thing; the windows that open when I invoke startx, none of them have titlebars... Like if there is no window-manager...
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NeddySeagoon
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PostPosted: Mon Apr 22, 2019 3:55 pm    Post subject: Reply with quote

Progman3K,

That's Xorg working then.

How do you intend to start gdm?

There are two ways.
Edit your ~/.xinitrc, so startx brings up gdm.
Configure xdm to start gdm and add xdm to the default runlevel.

The former is per user, the latter is system wide.
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Progman3K
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PostPosted: Mon Apr 22, 2019 5:26 pm    Post subject: Reply with quote

Hi Neddy!

I've added gdm to the default runlevel with

systemctl enable gdm

but

systemctl status gdm
Quote:
● gdm.service - GNOME Display Manager
Loaded: loaded (/lib/systemd/system/gdm.service; enabled; vendor preset: disabled)
Active: active (running) since Mon 2019-04-22 11:10:36 EDT; 2h 21min ago
Main PID: 2731 (gdm)
CGroup: /system.slice/gdm.service
└─2731 /usr/sbin/gdm

Apr 22 11:10:56 svt gdm-launch-environment][5789]: pam_systemd(gdm-launch-environment:session): Unknown parameter 'kill-session-processes=1', ignoring
Apr 22 11:10:56 svt gdm[2731]: Child process -5792 was already dead.
Apr 22 11:10:56 svt gdm[2731]: Child process 5789 was already dead.
Apr 22 11:10:56 svt gdm[2731]: Unable to kill session worker process
Apr 22 11:10:56 svt gdm-launch-environment][5795]: pam_systemd(gdm-launch-environment:session): Unknown parameter 'kill-session-processes=1', ignoring
Apr 22 11:10:56 svt gdm[2731]: Could not start command '/usr/libexec/gdm-session-worker': Too many open files
Apr 22 11:10:56 svt gdm[2731]: GLib: g_child_watch_add_full: assertion 'pid > 0' failed
Apr 22 11:10:56 svt gdm[2731]: Child process -5798 was already dead.
Apr 22 11:10:56 svt gdm[2731]: Child process 5795 was already dead.
Apr 22 11:10:56 svt gdm[2731]: Unable to kill session worker process
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NeddySeagoon
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PostPosted: Mon Apr 22, 2019 7:06 pm    Post subject: Reply with quote

Progman3K,

I'm not a systemd user.

Is there anything in dmesg or in Xorg.0.log after gdm fails to start?
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Progman3K
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PostPosted: Wed Apr 24, 2019 12:24 pm    Post subject: Reply with quote

Hi Neddy!

Even under systemd, there is an Xorg.0.log created in /var/log, here are the contents

https://pastebin.com/CtEJi7nT

I'm not seeing any EE codes in there...

Here's the dmesg log

https://pastebin.com/1NrcQ7wY

Longshot, but here are the groups the user belongs to:
tty wheel uucp audio dialout video kvm users locate plugdev svt

As you pointed out, X does start, so it's something to do with GDM, but I can't imagine what

EDIT

There does seem to be problems though, I've copied the last few pages of the systemd log and there are a bunch of errors in there, I just don't know what the root-cause is

https://pastebin.com/2zZ2UxKr

EDIT 2

Since startx does work, and installing twm (along with font-adobe-100dpi and font-adobe-75dpi), I can get along. It's not Gnome, which was the original target, but X with twm isn't half-bad :-)
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