Hey KDE-Folks,

I'm running Arch Linux with KDE 4.10 and libpng 1.6
Now i'm experiencing the problem, that my Desktop stays black after KDM-Login.
It seems to be a plasma-desktop problem, since i can start programs via krunner and start a plasma-netbook session.

When i try to run plasma-desktop i get this:

Code: Select all

[markus@MacBook ~]$ plasma-desktop
QDBusConnection: session D-Bus connection created before QCoreApplication. Application may misbehave.
QDBusConnection: session D-Bus connection created before QCoreApplication. Application may misbehave.
Fontconfig warning: "/etc/fonts/conf.d/50-user.conf", line 14: reading configurations from ~/.fonts.conf is deprecated.
QDBusObjectPath: invalid path ""
QDBusObjectPath: invalid path ""
QGraphicsLinearLayout::insertItem: cannot insert null item
QGraphicsLinearLayout::insertItem: cannot insert null item
plasma-desktop(1757)/libplasma Plasma::isPluginVersionCompatible: unversioned plugin detected, may result in instability
13:11:22.331  Info      [Appl. Thread] YaWP::YaWP (Line 95):                       
13:11:22.331  Info      [Appl. Thread] YaWP::YaWP (Line 96):                        yaWP 0.4.2 compiled at Mar 30 2012 22:19:57 for KDE 4.8.1 (4.8.1)
13:11:22.332  Info      [Appl. Thread] YaWP::YaWP (Line 97):                        yaWP 0.4.2 is running on KDE 4.10.4
13:11:22.332  Info      [Appl. Thread] YaWP::YaWP (Line 98):                       
plasma-desktop(1757)/libplasma Plasma::isPluginVersionCompatible: unversioned plugin detected, may result in instability
plasma-desktop(1757)/libplasma Plasma::isPluginVersionCompatible: unversioned plugin detected, may result in instability
plasma-desktop(1757)/libplasma Plasma::isPluginVersionCompatible: unversioned plugin detected, may result in instability
plasma-desktop(1757)/libplasma Plasma::isPluginVersionCompatible: unversioned plugin detected, may result in instability
13:11:22.735  Debug     [Appl. Thread] YaWP::loadConfig (Line 529):                 "wunderground" "Nuernberg, Germany" "Germany" "de" "airport:EDDN" "Europe/Berlin" "DE"
13:11:22.746  Info      [Appl. Thread] WundergroundIon::WundergroundIon (Line 203): WundergroundIon 0.4.2 compiled at Mar 30 2012 22:20:16 for KDE 4.8.1 (4.8.1)
13:11:22.746  Debug     [Appl. Thread] WundergroundIon::getWeatherData (Line 758):  QUrl("http://api.wunderground.com/auto/wui/geo/WXCurrentObXML/index.xml?query=EDDN")
13:11:22.747  Debug     [Appl. Thread] WundergroundIon::getWeatherData (Line 819):  Added XmlWeatherData for "airport:EDDN"
libpng error: bad adaptive filter value

I would be very thankful, if someone could help me out here...

Solved!
An old plasmoid was the problem! (yawp)

Marked as solved. Thanks for noting the solution you found to your issue.

Which plasmoid caused this?? I am having the same issue and I'm about to switch DE's I'm so fed up with this. I don't have any plasmoids installed that aren't the stock KDE ones and I removed the ones I would never use right after I installed KDE initially.

did it go black after an upgrade?

is it just your user or others also?

google01103 wrote:did it go black after an upgrade?

is it just your user or others also?

I only have one user. I actually deleted my entire .kde directory and cache directories to be on a clean slate. Did not resolve it. It just started recently I'm sure after an upgrade. I don't remember what was upgraded. My memory is shot lol. I am running 4.10.4. I disabled the splash screen hoping that was it because it would just hang at the kde logo for 2+ minutes. Now it just hangs at a black screen instead.

it could be that your graphics drivers and kernel are not matched

describe your setup:

graphics chip
graphics drivers
distro & version

this command will display graphics info

Code: Select all

glxinfo|grep OpenGL

google01103 wrote:it could be that your graphics drivers and kernel are not matched

describe your setup:

graphics chip
graphics drivers
distro & version

this command will display graphics info

Code: Select all

glxinfo|grep OpenGL

Mobility Radeon HD 5730 / 6570M
xf86-video-ati 7.1.0
Arch x86_64 kernel 3.9.8

OpenGL vendor string: X.Org
OpenGL renderer string: Gallium 0.4 on AMD REDWOOD
OpenGL core profile version string: 3.1 (Core Profile) Mesa 9.1.3
OpenGL core profile shading language version string: 1.40
OpenGL core profile context flags: (none)
OpenGL core profile extensions:
OpenGL version string: 3.0 Mesa 9.1.3
OpenGL shading language version string: 1.30
OpenGL context flags: (none)
OpenGL extensions:


I get in eventually but sometimes it takes 5 minutes or so.

you get what after 5 minutes? your desktop? if so in a virtual terminal (alt+ctrl+f1) run:
- top (or htop or atop) and see if there's any process eating up your cpu
- iotop to see if there's a disk issue with something eating all your i/o

I don't know Arch or Ati, but if your upgrade included the Kernel (and 3.9.8 is real new) did you recompile your gpu drivers?

Yeah I get in to my desktop. Next time it hangs I'll dig around some more. I thought it was a systemd issue originally but nothing sticks out. "systemd-analyze blame" has nothing that hangs for that long. No I didn't recompile my gpu drivers. Never have had too before after a kernel update. I just updated to that kernel last night btw. The issue was there prior. It doesn't always do it either, but it does a majority of the time.

systemd-analyze doesn't analyze the de (KDE), is your issue pre or post the start of KDE?

google01103 wrote:systemd-analyze doesn't analyze the de (KDE), is your issue pre or post the start of KDE?

The same spot as the op. Type my password in kdm hit enter and then it hangs.

Please try pressing Alt + Shift + F12 or killing the "kwin" process (if it is running) to ensure that this is not related to a graphics card hang.