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KDE doesn't start after upgrade to Fedora 27




I have two systems that were recently upgraded from Fedora 26 to 27
using DNF system-upgrade. Both were successfully running a KDE desktop
for several generations previously, including on F26. In both cases,
after the upgrade, starting KDE showed the splash screen and then
a blank screen with only a pointer cursor. The keyboard and mouse
worked but the screen remained blank. Both systems are set to start
in systemd's multi-user mode; KDE is started with the startx command.

One of the systems is a 32-bit laptop with little local content. I
chose to simply do a fresh install on this one to get it working
quickly. Fedora doesn't offer an installation image for 32-bit F27
so I installed F25 and then did successive upgrades to F26 and then
F27. KDE worked in both F25 and F26 but had the same problem once
I got to F27. I did it again and stopped at F26 to have a working
system.

The other system is a modern 64-bit desktop with 8GB RAM. This one
still has the problem. I'd like to find the cause and a solution
before I make the effort to revert to F26 because this one has
a huge amount of local content which I would have to backup and
restore. (I do backups but more for recovery of individual files;
a general recovery could have other problems.)

The logs haven't given me any clue as to the cause of the
problem. I have now run "startx &>logfile" hoping that might tell
me something. After the blank screen appeared, I killed xinit and
Xorg from a different console. The logfile is included below in the
hope it might spark some insight from the group.

xauth:  file /home/dave/.serverauth.4392 does not exist

X.Org X Server 1.19.6
Release Date: 2017-12-20
X Protocol Version 11, Revision 0
Build Operating System:  4.14.11-300.fc27.x86_64 
Current Operating System: Linux dc7800.compata.com 4.14.13-300.fc27.x86_64 #1 SMP Thu Jan 11 04:00:01 UTC 2018 x86_64
Kernel command line: BOOT_IMAGE=/vmlinuz-4.14.13-300.fc27.x86_64 root=/dev/mapper/fedora_dc7800-root ro rd.lvm.lv=fedora_dc7800/root rd.lvm.lv=fedora_dc7800/swap vconsole.font=latarcyrheb-sun16 biosdevname=0 net.ifnames=0 selinux=0 LANG=en_US.UTF-8
Build Date: 10 January 2018  11:00:12PM
Build ID: xorg-x11-server 1.19.6-2.fc27 
Current version of pixman: 0.34.0
	Before reporting problems, check http://wiki.x.org
	to make sure that you have the latest version.
Markers: (--) probed, (**) from config file, (==) default setting,
	(++) from command line, (!!) notice, (II) informational,
	(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
(==) Log file: "/home/dave/.local/share/xorg/Xorg.1.log", Time: Sat Feb  3 15:15:51 2018
(==) Using config file: "/etc/X11/xorg.conf"
(==) Using config directory: "/etc/X11/xorg.conf.d"
(==) Using system config directory "/usr/share/X11/xorg.conf.d"
startkde: Starting up...
dbus-update-activation-environment: warning: error sending to systemd: org.freedesktop.DBus.Error.Spawn.ChildExited: Process org.freedesktop.systemd1 exited with status 1
2018-02-03T15:15:53 Checking update-file '/usr/share/kconf_update/akregator.upd' for new updates
2018-02-03T15:15:53 Checking update-file '/usr/share/kconf_update/blogilo.upd' for new updates
2018-02-03T15:15:53 Checking update-file '/usr/share/kconf_update/disable_kmix.upd' for new updates
2018-02-03T15:15:53 Checking update-file '/usr/share/kconf_update/fonts_akregator.upd' for new updates
2018-02-03T15:15:53 Checking update-file '/usr/share/kconf_update/fonts_global.upd' for new updates
2018-02-03T15:15:53 Checking update-file '/usr/share/kconf_update/fonts_global_toolbar.upd' for new updates
2018-02-03T15:15:53 Checking update-file '/usr/share/kconf_update/fonts_kate.upd' for new updates
2018-02-03T15:15:53 Checking update-file '/usr/share/kconf_update/importwizard.upd' for new updates
2018-02-03T15:15:53 Checking update-file '/usr/share/kconf_update/kaddressbook.upd' for new updates
2018-02-03T15:15:53 Checking update-file '/usr/share/kconf_update/kalarm.upd' for new updates
2018-02-03T15:15:53 Checking update-file '/usr/share/kconf_update/katomic-levelset.upd' for new updates
2018-02-03T15:15:53 Checking update-file '/usr/share/kconf_update/kcalcrc.upd' for new updates
2018-02-03T15:15:53 Checking update-file '/usr/share/kconf_update/kgthemeprovider-migration.upd' for new updates
2018-02-03T15:15:53 Checking update-file '/usr/share/kconf_update/kleopatra.upd' for new updates
2018-02-03T15:15:53 Checking update-file '/usr/share/kconf_update/klickety.upd' for new updates
2018-02-03T15:15:53 Checking update-file '/usr/share/kconf_update/kmail.upd' for new updates
2018-02-03T15:15:53 Checking update-file '/usr/share/kconf_update/kmail2.upd' for new updates
2018-02-03T15:15:53 Checking update-file '/usr/share/kconf_update/knavalbattle.upd' for new updates
2018-02-03T15:15:53 Checking update-file '/usr/share/kconf_update/knotes.upd' for new updates
2018-02-03T15:15:53 Checking update-file '/usr/share/kconf_update/kontact.upd' for new updates
2018-02-03T15:15:53 Checking update-file '/usr/share/kconf_update/korganizer.upd' for new updates
2018-02-03T15:15:53 Checking update-file '/usr/share/kconf_update/krdb_libpathwipe.upd' for new updates
2018-02-03T15:15:53 Checking update-file '/usr/share/kconf_update/krunnerplugins.upd' for new updates
2018-02-03T15:15:53 krunnerplugins.upd: Found new update '5.9KRunnerPlugins'
2018-02-03T15:15:53 krunnerplugins.upd:3:'Script=krunnerplugins': Script 'krunnerplugins' not found
2018-02-03T15:15:53 Checking update-file '/usr/share/kconf_update/kscreenlocker.upd' for new updates
2018-02-03T15:15:53 Checking update-file '/usr/share/kconf_update/messageviewer.upd' for new updates
2018-02-03T15:15:53 Checking update-file '/usr/share/kconf_update/okular.upd' for new updates
2018-02-03T15:15:53 Checking update-file '/usr/share/kconf_update/pimsettingexporter.upd' for new updates
2018-02-03T15:15:53 Checking update-file '/usr/share/kconf_update/sieveeditor.upd' for new updates
2018-02-03T15:15:53 Checking update-file '/usr/share/kconf_update/webengineurlinterceptoradblock.upd' for new updates
vmware-user: could not open /proc/fs/vmblock/dev
SELinux Troubleshooter: Applet requires SELinux be enabled to run.
(uint32 1,)
OpenGL vendor string:                   Intel Open Source Technology Center
OpenGL renderer string:                 Mesa DRI Intel(R) Q35 
OpenGL version string:                  1.4 Mesa 17.2.4
OpenGL shading language version string: 1.20
Driver:                                 Intel
GPU class:                              i915/i945
OpenGL version:                         1.4
GLSL version:                           1.20
Mesa version:                           17.2.4
Linux kernel version:                   4.14.13
Requires strict binding:                yes
GLSL shaders:                           limited
Texture NPOT support:                   yes
Virtual Machine:                        no
Service started, version: 7.0.0
Service started, version: 7.0.0
Service started, version: 7.0.0

(tracker-extract:4744): Tracker-WARNING **: Couldn't create PopplerDocument from uri:'file:///home/dave/The%20Dark%20Arts%20of%20SSH%202015.04.19%20documentation.pdf', PDF document is damaged
(II) AIGLX: Suspending AIGLX clients for VT switch

(tracker-miner-apps:4747): Tracker-WARNING **: Couldn't properly parse desktop file 'file:///home/dave/.local/share/applications/stardict.desktop': 'Invalid key name: Path[$e]'

(tracker-miner-apps:4747): Tracker-WARNING **: Couldn't properly parse desktop file 'file:///home/dave/.local/share/applications/org.kde.sieveeditor.desktop': 'Invalid key name: Path[$e]'

(tracker-miner-apps:4747): Tracker-WARNING **: Couldn't properly parse desktop file 'file:///home/dave/.local/share/applications/planner.desktop': 'Invalid key name: Path[$e]'

(tracker-miner-apps:4747): Tracker-WARNING **: Couldn't properly parse desktop file 'file:///home/dave/.local/share/applications/org.kde.pimsettingexporter.desktop': 'Invalid key name: Path[$e]'

(tracker-miner-apps:4747): Tracker-WARNING **: Couldn't properly parse desktop file 'file:///home/dave/.local/share/applications/org.kde.lokalize.desktop': 'Invalid key name: Path[$e]'

(tracker-miner-apps:4747): Tracker-WARNING **: Couldn't properly parse desktop file 'file:///home/dave/.local/share/applications/libreoffice-writer.desktop': 'Invalid key name: Path[$e]'

(tracker-miner-apps:4747): Tracker-WARNING **: Couldn't properly parse desktop file 'file:///home/dave/.local/share/applications/libreoffice-impress.desktop': 'Invalid key name: Path[$e]'

(tracker-miner-apps:4747): Tracker-WARNING **: Couldn't properly parse desktop file 'file:///home/dave/.local/share/applications/libreoffice-draw.desktop': 'Invalid key name: Path[$e]'

(tracker-miner-apps:4747): Tracker-WARNING **: Couldn't properly parse desktop file 'file:///home/dave/.local/share/applications/libreoffice-calc.desktop': 'Invalid key name: Path[$e]'

(tracker-miner-apps:4747): Tracker-WARNING **: Couldn't properly parse desktop file 'file:///home/dave/.local/share/applications/libreoffice-base.desktop': 'Invalid key name: Path[$e]'

(tracker-miner-apps:4747): Tracker-WARNING **: Couldn't properly parse desktop file 'file:///home/dave/.local/share/applications/org.kde.kontact.desktop': 'Invalid key name: Path[$e]'

(tracker-miner-apps:4747): Tracker-WARNING **: Couldn't properly parse desktop file 'file:///home/dave/.local/share/applications/org.kde.ktnef.desktop': 'Invalid key name: Path[$e]'

(tracker-miner-apps:4747): Tracker-WARNING **: Couldn't properly parse desktop file 'file:///home/dave/.local/share/applications/kde4-ktimetracker.desktop': 'Invalid key name: Path[$e]'

(tracker-miner-apps:4747): Tracker-WARNING **: Couldn't properly parse desktop file 'file:///home/dave/.local/share/applications/org.kde.korganizer.desktop': 'Invalid key name: Path[$e]'

(tracker-miner-apps:4747): Tracker-WARNING **: Couldn't properly parse desktop file 'file:///home/dave/.local/share/applications/org.kde.kmail.desktop': 'Invalid key name: Path[$e]'

(tracker-miner-apps:4747): Tracker-WARNING **: Couldn't properly parse desktop file 'file:///home/dave/.local/share/applications/org.kde.headerthemeeditor.desktop': 'Invalid key name: Path[$e]'

(tracker-miner-apps:4747): Tracker-WARNING **: Couldn't properly parse desktop file 'file:///home/dave/.local/share/applications/org.kde.kaddressbook.desktop': 'Invalid key name: Path[$e]'

(tracker-miner-apps:4747): Tracker-WARNING **: Couldn't properly parse desktop file 'file:///home/dave/.local/share/applications/jpilot.desktop': 'Invalid key name: Path[$e]'

(tracker-miner-apps:4747): Tracker-WARNING **: Couldn't properly parse desktop file 'file:///home/dave/.local/share/applications/gnumeric.desktop': 'Invalid key name: Path[$e]'

(tracker-miner-apps:4747): Tracker-WARNING **: Couldn't properly parse desktop file 'file:///home/dave/.local/share/applications/gnucash.desktop': 'Invalid key name: Path[$e]'

(tracker-miner-apps:4747): Tracker-WARNING **: Couldn't properly parse desktop file 'file:///home/dave/.local/share/applications/evolution.desktop': 'Invalid key name: Path[$e]'

(tracker-miner-apps:4747): Tracker-WARNING **: Couldn't properly parse desktop file 'file:///home/dave/.local/share/applications/evince.desktop': 'Invalid key name: Path[$e]'

(tracker-miner-apps:4747): Tracker-WARNING **: Couldn't properly parse desktop file 'file:///home/dave/.local/share/applications/org.kde.contactthemeeditor.desktop': 'Invalid key name: Path[$e]'

(tracker-miner-apps:4747): Tracker-WARNING **: Couldn't properly parse desktop file 'file:///home/dave/.local/share/applications/org.kde.contactprintthemeeditor.desktop': 'Invalid key name: Path[$e]'

(tracker-miner-apps:4747): Tracker-WARNING **: Couldn't properly parse desktop file 'file:///home/dave/.local/share/applications/org.kde.storageservicemanager.desktop': 'Invalid key name: Path[$e]'

(tracker-miner-apps:4747): Tracker-WARNING **: Couldn't properly parse desktop file 'file:///home/dave/.local/share/applications/xterm.desktop': 'Invalid key name: Path[$e]'

(krb5-auth-dialog:4738): libnotify-WARNING **: Failed to connect to proxy

(krb5-auth-dialog:4738): KrbAuthDialog-WARNING **: Failed to read server caps

(krb5-auth-dialog:4738): KrbAuthDialog-WARNING **: Unsupported cache type for 'KEYRING:persistent:1000'

(krb5-auth-dialog:4738): KrbAuthDialog-CRITICAL **: monitor_ccache: assertion 'ccache_name != NULL' failed

(krb5-auth-dialog:4738): KrbAuthDialog-WARNING **: Cannot close notification Error calling StartServiceByName for org.freedesktop.Notifications: Timeout was reached
The XKEYBOARD keymap compiler (xkbcomp) reports:
> Error:            Key <CAPS> added to map for multiple modifiers
>                   Using Control, ignoring Lock.
Errors from xkbcomp are not fatal to the X server
The XKEYBOARD keymap compiler (xkbcomp) reports:
> Error:            Key <CAPS> added to map for multiple modifiers
>                   Using Control, ignoring Lock.
Errors from xkbcomp are not fatal to the X server
The XKEYBOARD keymap compiler (xkbcomp) reports:
> Error:            Key <CAPS> added to map for multiple modifiers
>                   Using Control, ignoring Lock.
Errors from xkbcomp are not fatal to the X server
(II) AIGLX: Suspending AIGLX clients for VT switch
Killed
XIO:  fatal IO error 11 (Resource temporarily unavailable) on X server ":1"
      after 33 requests (33 known processed) with 0 events remaining.
XIO:  fatal IO error 2 (No such file or directory) on X server ":1"
      after 2527 requests (2527 known processed) with 0 events remaining.
Gdk-Message: abrt: Fatal IO error 11 (Resource temporarily unavailable) on X server :1.

klauncher: Exiting on signal 1
Unexpected response from KInit (response = 0).
startkde: Could not start ksmserver. Check your installation.
Error: Can't open display: :1
double free or corruption (out)
KCrash: Application 'ksmserver' crashing...
Could not connect to D-Bus server: org.freedesktop.DBus.Error.NoServer: Failed to connect to socket /tmp/dbus-ckwbRYXCim: Connection refused
startkde: Shutting down...
kdeinit5_wrapper: Warning: connect(/run/user/1000/kdeinit5__1) failed: : No such file or directory
Error: Can not contact kdeinit5!
xprop:  unable to open display ':1'
xprop:  unable to open display ':1'
startkde: Done.
-- 
	Dave Close