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Old 03-17-2016, 01:57 PM   #1
michelino
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Registered: Dec 2006
Posts: 31

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Plasma5 - SDDM black screen after kernel/mesa/xorg update


On my machine running slackware-current and Eric's Plasma5 set of packages, I've upgraded all together kernel-4.4.5, mesa-11.1.2 and xorg-server-1.18.2, and sddm login stopped working.
Booting in runlevel 4 I get only a black screen with blinking cursor on the top-left side of the monitor.
Everithing works flawlessy booting in runlevel 3 and using "startx".
Nothing has changed with the latest "KDE 5_16.03" upgrade.

In /var/log/messages I find lot of

Code:
kernel: [  158.167700] traps: sddm-greeter[1367] trap invalid opcode ip:7ffb34613646 sp:7fffac74c8a0 error:0
and

Code:
kernel: [ 4620.217407] sddm[6332]: segfault at 430 ip 0000000000000430 sp 00007ffd2b1a1e28 error 14 in sddm[400000+67000]
kernel: [ 4615.310438] sddm[6316]: segfault at 7f217a4bbe58 ip 00007f217a
4bbe58 sp 00007ffdd53e3f88 error 15 in libc-2.23.so[7f217a4bb000+2000]
wile in /var/log/sddm I find

Code:
Initializing...
[18:00:10.858] (II) DAEMON: Starting...
[18:00:10.858] (II) DAEMON: Adding new display on vt 7 ...
[18:00:10.870] (II) DAEMON: Display server starting...
[18:00:10.870] (II) DAEMON: Running: /usr/bin/X -nolisten tcp -auth /var/run/sddm/{1d085634-52e9-4bf5-a2a1-eb7bcb8fefec} -background none -noreset -displayfd 17 vt7
[18:00:12.706] (II) DAEMON: Running display setup script  "/usr/share/sddm/scripts/Xsetup"
[18:00:12.743] (II) DAEMON: Display server started.
[18:00:12.743] (II) DAEMON: Socket server starting...
[18:00:12.747] (II) DAEMON: Socket server started.
[18:00:12.749] (II) DAEMON: Greeter starting...
[18:00:12.749] (II) DAEMON: Adding cookie to "/var/run/sddm/{1d085634-52e9-4bf5-a2a1-eb7bcb8fefec}"
[18:00:12.821] (II) DAEMON: Greeter session started successfully
[18:00:13.385] (II) DAEMON: Message received from greeter: Connect
[18:00:19.043] (WW) DAEMON: Auth: sddm-helper exited with 4
[18:00:19.043] (II) DAEMON: Greeter stopped.
[18:04:52.115] (II) DAEMON: Display server stopped.
[18:04:52.115] (II) DAEMON: Running display stop script  "/usr/share/sddm/scripts/Xstop"
[18:04:52.129] (II) DAEMON: Socket server stopping...
[18:04:52.129] (II) DAEMON: Socket server stopped.
[18:04:52.129] (II) DAEMON: Removing display ":0" ...
Googling around it seems related to the kernel, does anyone have the same problem?

P.S.: I've a skylake processor.
 
Old 03-18-2016, 07:13 AM   #2
Drakeo
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Registered: Jan 2008
Location: Urbana IL
Distribution: Slackware, Slacko,
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I did a full upgrade yesterday it went flawless. and I run multi lib.
I skipped two upgrades and did this one.
after downloading the latest stable current 5.
First I upgraded all my slackware and made sure all my sbo-builds would be updated with any new additions.
then this is the script I used. after I uninstalled nvidia.

Code:
#!/bin/bash
   slackpkg update
   slackpkg install-new
   slackpkg upgrade-all
   
   slackpkg install ConsoleKit2
   slackpkg install eigen2
   slackpkg  install xapian-core

   slackpkg re-install ConsoleKit2
   slackpkg re-install eigen2
   slackpkg  re-install xapian-core
 
   removepkg ConsoleKit
   removepkg grantlee-qt5
   removepkg kgamma
   removepkg pairs
   removepkg LoginKit
   removepkg kdeconnect4
   rsync -r -a -v --bwlimit=200 --delete --progress --stats rsync://rsync.slackware.org.uk/people/alien/multilib/current/ /var/cache/multilib/
   cd /var/cache/multilib
   upgradepkg  --install-new *.t?z
   cd /var/cache/multilib/slackware64-compat32
   upgradepkg --install-new *?/*.t?z
  
  cd /root/5
 upgradepkg --reinstall --install-new x86_64/deps/*.t?z
 echo deps installed
 sleep 2
 upgradepkg --reinstall --install-new x86_64/deps/telepathy/*.t?z
  echo telepathy installed
 sleep 2
 upgradepkg --reinstall --install-new x86_64/kde/*/*.t?z
 slackpkg new-config
 echo kde installed
then I rebooted with the vmlinuz-huge telinit 3
created an intrid.gz. then I ran my linux setup scripts.
then rebooted with the generic kernel
then rebuilt the latest nvidia.
after logging in the theme manager would not change. so I logged out.
init 3 logged in as root and deleted ~/home/.kde and .config and .cache of my user.
then logged using init 4
signed in as the user and things where ok. The only issue I find is fonts are going blurry they do not seem to refresh at times.
after that I rebuilt all my media ffmpeg vlc patents yes rebuilt pulseaudio so it would use my jackd2 then rebuilt mplayer to use patents yes.
rebuilt my alsa-plugins so they would build against ffmpeg and jack2 and pulse audio rebuilt speex from slackbuilds.
That is my experience.
I only blacklist I have alien and compat32.

Last edited by Drakeo; 03-18-2016 at 07:16 AM.
 
Old 04-26-2016, 10:23 AM   #3
michelino
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Registered: Dec 2006
Posts: 31

Original Poster
Rep: Reputation: 1
Ok, I solved the issue, for reasons that I don't know, "sddm" no longer wasn't in "video" group.
Adding sddm user to the video group did the trick.

Michelino
 
1 members found this post helpful.
  


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