Announcement

**PJJ** · Aug 31, 2015, 05:48 PM

Problem is that my ancient laptop does not start from USB and it does not recognize DVD drive, only CD.
That is part of my problem.

Here are the most frequent errors and the last entries right before it successfully logged me in (without networkmanager).

[23:06:31.480] (WW) GREETER: QObject: Cannot create children for a parent that is in a different thread.
(Parent is SDDM::GreeterApp(0xbfca996c), parent's thread is QThread(0x9603ba8), current thread is QThread(0x962f498)

[23:06:34.781] (WW) GREETER: Calling KPluginInfo:

roperty("X-KDE-PluginInfo-Name") is deprecated, use KPluginInfo:

luginName() in "/usr/lib/i386-linux-gnu/qt5/plugins/plasma/dataengine/plasma_engine_filebrowser.so" instead.

After /etc/init.d/sddm start:Here is the latest about the ongoing drama.
I had to upgrade from 12.10 to 15.04 because I could not get a USB boot working (with PLOP).

Logged into 15.04 without problems. Stayed on it for hours. Wifi went out. Restarted: Same old problem. Sddm crashed.

Tried: systemctl start sddm.
Resulted in this:

Adding cookie to /var/run/sddm/: 1
/usr/bin/xauth: timeout locking (?) var/run/sddm1
DAEMON messages:
display server startin
running /usr/bin/X :1 -auth/var/run/sddm/:1 - nolisten tcp-background none- noset vt?
display server stopped
running "/usr/share/sddm/scripts/Xstop"

End error messages. Hangs on terminal screen.

I also checked the log as suggested. Lots of messages with three recurring. Unfortunately I cannot give them here because the text is stored in 15.04. Not accessible.

There is nothing wrong with PLasma or anything else. I worked long enough in 15.04 without any issues before the wifi went out.

Will now try the other solution that worked for me once: ctrl + alt+F1:
sudo /etc/init.d/sddm start

It worked but did not give me NetworkManager.

[23:08:04.700] (II) HELPER: [PAM] Starting...
[23:08:04.701] (II) HELPER: [PAM] Authenticating...
[23:08:04.701] (II) HELPER: [PAM] Preparing to converse...
[23:08:04.701] (II) HELPER: [PAM] Conversation with 1 messages
[23:08:06.798] (II) HELPER: [PAM] returning.
[23:08:06.799] (II) DAEMON: Authenticated successfully
[23:08:06.799] (II) GREETER: Message received from daemon: LoginSucceeded
[23:08:07.177] (II) HELPER: Starting: "/usr/share/sddm/scripts/Xsession" "/usr/bin/startkde"
[23:08:07.193] (II) HELPER: [PAM] Ended.
[23:08:07.194] (II) DAEMON: Auth: sddm-helper exited successfully
[23:08:07.194] (II) DAEMON: Greeter stopped.
[23:08:07.228] (II) HELPER: Adding cookie to "/home/pete1/.Xauthority"
[23:08:07.323] (II) DAEMON: Session started

I finally retrieved some of the most often repeated errors in the log:

[23:06:31.480] (WW) GREETER: QObject: Cannot create children for a parent that is in a different thread.
(Parent is SDDM::GreeterApp(0xbfca996c), parent's thread is QThread(0x9603ba8), current thread is QThread(0x962f498)

"[23:06:34.781] (WW) GREETER: Calling KPluginInfo:

roperty("X-KDE-PluginInfo-Name") is deprecated, use KPluginInfo:

luginName() in "/usr/lib/i386-linux-gnu/qt5/plugins/plasma/dataengine/plasma_engine_filebrowser.so" instead."

Don't know what that means at all.

If I could figure out how to start my laptop from USB flash drive, I could make a clean installation of 15.04.

**PJJ** · Sep 04, 2015, 01:48 PM

Update:
None of the solutions suggested on the Net work permanently. Some work once or twice, others do nothing at all.
Tried/used:
Purge sddm, reinstall;
purge/reinstall lightdm;

using recovery mode, package repair/install;
commandline dpkg;
update/upgrade;
reboot normally - sometimes boots right into 15.04. Once or twice. Then error again.

sudo /etc/init.d/sddm start - worked once or twice, not permanent;

systemctl start sddm - worked once, not permanent;

The two main 'fixes':

sudo systemctl enable sddm.service -f

rebotot worked once, I believe. Nothing after that.

Install dailies instead of wasting time with fixes that do not work.
Same error message.

Last ditch fix: Install Ubuntu 15.04 instead.
I decided to combine two of the 'fixes' into one test:
15.10 dailies and start live from Grub (Grub-N-Iso).
Works like a charm and looks sinfully ugly.

My final test:
Grub-N-Iso with Kubuntu 15.10 daily (09/04) - underway.

**PJJ** · Sep 08, 2015, 06:25 PM

I am marking this thread as solves. It should be 'abandoned' because I really did a workaround only.

Final:
None of the solutions from the web nor from this group worked. The 'sddm greeter' kept on crashing.
I used Grub-N-Iso to boot the computer from the ISO.
It worked and installed Kubuntu 15.04 (actually 15.10) directly from ISO in /grub/grml.

Great!
Then: sddm-greeter crashed again.

Tired of this charade I downloaded Ubuntu 15.10 and installed it from Grub-N-Iso.
Installed without any issues, works just fine. No 'greeter' crashes.

But: Ugly looks and sloooooooooooooooooooow moving.

Could I install the Kubuntu desktop on the Ubuntu 15.10 installation to get back to Kubuntu 15.10?
Without having 'sddm-greeter' crash?

**PJJ** · Sep 15, 2015, 05:00 PM

Are my eyes deceiving me, am I losing it or did the forum swallow my reply to this post?

I do not see it anywhere. Posted it days ago.

It said something like this:

During login I do not see a choice of DE.

Could you please give me a few pointers on where exactly it should be shown?
I would appreciate it.

Thank you.

PS:
If the 'sddm-greeter' is part of the Kubuntu Plasma environment, would my system not crash again as soon as I install It?
That worries me.

**vinnywright** · Sep 15, 2015, 05:31 PM