Bug 661600

Created attachment 467691 [details]
messages file

Created attachment 467692 [details]
lxdm log file

it looks like lxdm is calling X with bad options, so, lxdm bug? does it work if you switch to gdm?



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Where are these options coming from? Did you start lxdm manually?

Please give us the content of

/etc/lxdm/lxdm.conf
/etc/sysconfig/desktop

Thanks in advance.

i don't try gdm yet, but thank you for your answer

[andy@timelock ~]$ cat /etc/sysconfig/desktop
PREFERRED=/usr/bin/startlxde
DISPLAYMANAGER=/usr/sbin/lxdm
[andy@timelock ~]$ cat /etc/lxdm/lxdm.conf
cat: /etc/lxdm/lxdm.conf: Permission denied
[andy@timelock ~]$ su -
Password: 
[root@timelock ~]# cat /etc/lxdm/lxdm.conf
[base]
# autologin=dgod
# session=/usr/bin/startlxde
# numlock=0
greeter=/usr/libexec/lxdm-greeter-gtk

[server]
arg=/usr/bin/X -nr vt1

[display]
gtk_theme=Clearlooks
bg=/usr/share/backgrounds/default.png
bottom_pane=1
lang=1
theme=Industrial

[input]

[userlist]
disable=0
white=
black=

[root@timelock ~]#

Ok, lxdm.conf is fine. It looks you are running systemd, right? What happens if you comment out the line starting with arg=... ?

Can you tell me what package versions you are using?

rpm -q fedora-release lxdm systemd systemd-sysvinit systemd-utils

I'm using rawhide and yes, i'm using systemd. Version of packages:

[andy@timelock ~]$ rpm -qa | egrep "(fedora-release|lxdm|systemd)"
systemd-units-16-1.fc15.i686
fedora-release-notes-14.1.2-1.fc15.noarch
systemd-16-1.fc15.i686
lxdm-0.3.0-2.fc15.i686
[andy@timelock ~]$

You want what I would comment out the line in the file /etc/lxdm/lxdm.conf in [server] stanza?

I saw lxdm login, when i'm comment out /etc/lxdm/lxdm.conf:

[server]
#arg=/usr/bin/X -nr vt1

but i can't log in, because, after i enter my login and password -
lxdm displays login again and again (infinite loop).

Can you try with selinux in permissive mode just to be sure? Can you login in runlevel 3 and run LXDE with startlxde?

christoph: I just hit this bug testing something (I had to use lxdm as gdm in Rawhide live images appears to be broken). The bad -nr parameter is indeed in lxdm.conf out of the box - after a fresh install of lxdm - and it prevents lxdm from running. If I remove it from lxdm.conf, lxdm runs, and I could log in (I didn't hit the infinite loop Andy hit).



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Thanks for testing, Adam. On which VT is LXDM starting?

/me needs to set up a rawhide box...

honestly, I didn't check, I was at the end of my tether just trying to test the damn thing I was testing so once I got LXDM to start, I didn't investigate further =)



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Fedora Bugzappers volunteer triage team
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what i'm need to do?

I just ran into this, and tested it. With the config file line changed to:

arg=/usr/bin/X vt1

(That is, just remove the '-nr'), everything works fine and LXDM starts on vt1.

`man Xorg` gives no mention of this `nr` option, but I found something about it here: http://www.mail-archive.com/xorg-devel@lists.x.org/msg09360.html, and further digging suggests it's something to do with "smooth Plymouth -> X transitions", which is of course little consolation if one is getting no login manager.

So, uh, does someone know what it's supposed to do? I think the right thing is to not encode any fancy X options in per-display-manager config files, but may

changing the summary so we can find this damn thing better.

I think what this is meant to do is tell X to start on vt1 (not vt7), which does indeed help with smooth plymouth -> LXDE transition, but it's hardly critical. I think if we can't figure out the correct form of the parameter in current X we should just drop it for now. This currently breaks the LXDE spin for F15 Alpha.

hum, actually, just the 'vt1' alone should do that. So I don't know what the -nr is for.

this has been changed in the last two upstream commits:

http://lxde.git.sourceforge.net/git/gitweb.cgi?p=lxde/lxdm;a=history;f=data/lxdm.conf.in;h=7cb5f8747ad8e3494455d4979f54e9deee18771f;hb=HEAD

I will commit the relevant changes to our lxdm and see if that fixes it.

lxdm-0.3.0-4.fc15 has been submitted as an update for Fedora 15.
https://admin.fedoraproject.org/updates/lxdm-0.3.0-4.fc15

if people could test and +1 the update it'd really help. I have tested it in a live image I built here and it worked fine.

After i'm removed "-nr" option, lxdm works fine.
[andy@timelock tmp]$ rpm -qa | grep lxdm
lxdm-0.3.0-3.fc15.i686
[andy@timelock tmp]$
But i have not tried "-background" option.

please just test by installing the updated package from updates-testing or koji and report success or failure to bodhi via the link above. thanks!

i'm downloaded package from link above, and installed this package in my system:
[andy@timelock ~]$ rpm -qa | grep lxdm
lxdm-0.3.0-4.fc15.i686
[andy@timelock ~]$
Problem solved, you may close this bug. Adam, Christoph, Matthew - thank you very much!

Is the new option working as intended, or should it be "-background none"?

I also note that my existing config file got moved to .rpmsave, instead of getting an .rpmnew file. If I had configured other things (like autologin), I would have preferred that to be preserved.

New option working as "-background vt1"
[root@timelock ~]# cat /etc/lxdm/lxdm.conf
[base]
# autologin=dgod
# session=/usr/bin/startlxde
# numlock=0
greeter=/usr/libexec/lxdm-greeter-gtk

[server]
arg=/usr/bin/X -background vt1

[display]
gtk_theme=Clearlooks
bg=/usr/share/backgrounds/default.png
bottom_pane=1
lang=1
theme=Industrial

[input]

[userlist]
disable=0
white=
black=

[root@timelock ~]#

matthew: just plain '-background' is what upstream has; I actually just re-diffed an upstream patch. If you run X with some garbage options, to see the help output, it shows:

-background [none]     create root window with no background

the square brackets indicating the none is optional. X has a somewhat odd convention that the minus sign in some parameters is taken *literally* and means 'disable this' - so -background can be read 'minus background' and means 'disable the background'. See also -xinerama , for instance - you might think it means 'use xinerama', but you'd be dead wrong. =)

Okay, sounds good. I still think it should be config(noreplace), but that's a separate bug.

(In reply to comment #28)
> Okay, sounds good. I still think it should be config(noreplace), but that's a
> separate bug.

In fact removing (noreplace) was the result of a another bug. We need to make sure that lxdm is operational after an update and we can only guarantee that with a new config file because the behavior of lxdm has changed quite often in the past.

Sorry I have been so unresponsive in this bug, I'm just too busy with my dayjob. A big thanks to Adam for taking over!

+1 to including this as a nice-to-have (NTH) bug.  This issue adheres to the NTH principles [1]

[1] https://fedoraproject.org/wiki/QA:SOP_nth_bug_process#Nice-to-have_bug_principles

+1 to including as a HTH bug

thanks - can you push it through the freeze, then?

lxdm-0.3.0-4.fc15 has been pushed to the Fedora 15 stable repository.  If problems still persist, please make note of it in this bug report.