KDE Panel freeze
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I am running Kubuntu 12.04. After the automatic updates tha I run yesterday night my panel started freezing soon after the boot.
I can launch a few appliations but soon after a few minutes the panel stops working. I can browse between the open applications with alt-tab and the running apps are ok. The symptomps are very similar to https://bugs.kde.org/show_bug.cgi?id=324801 However, when I kill the desktop and try to restart per the bug description above (killall plasma-desktop && plasma-desktop) I get the following errors:
As the problem occured afte the upgrade I started to make a manual ap-get upgrade today and as it did not resolve the issue I went to see the log (/var/log/dpkg.lot) to discover the following error messages:
Any idea what happened and what I can do to debug / resolve the issue ? Now my desktop is fully useless. Thank you in advance Mika |
Manager
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did you try as a different user?
since the bug report you referenced seems to be Nvidia driver related are you running a Nvidia gpu? maybe try setting your plasma desktop to default
OpenSuse Leap 42.1 x64, Plasma 5.x
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Registered Member
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At the beginning this was my path of thinking also. The symptoms match with the NVidia bug and I am using NVidia indeed.
BUT later I tend to believe that the root cause of the problem is something else. The desktop does not start normally. See the error reports. I cannot interpret the error reports but viewing the dpkg log suggests that there is something wrong with the packages installed. What is "half-installed" ? It looks to me that something went wrong in the upgrade. The problem occurred after the apt-get upgrade. BR Mika |
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Manager
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no idea what "half-installed" is, maybe an Apt thing in *buntu or Debian indicating an issue with the packages and/or the ppa's - suggest for that you post on the Kubuntu forum, didn't seem that those packages were KDE specific so not sure if they're your problem regarding the "libplasma Plasma::isPluginVersionCompatible: unversioned plugin detected, may result in instability" errors I found some posts that were resolved by renaming ~/.kde - so for those you may wish to test as a new user viewtopic.php?f=67&t=117582 & https://bbs.archlinux.org/viewtopic.php?id=165335
OpenSuse Leap 42.1 x64, Plasma 5.x
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Registered Member
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I have not been able to debug my issue during the week too much. It still persists but at least I know now the following:
-It is not in the user configuration/profile. I have tried another user and removed the konfigurations in the .kde -folder. I have now the default configuration. -The desktop and the applets/plasmoids communicate a while after the boot but after a minute a two they stop. The panel freeze and even the clock plasmoid stop running. All windows and the applications that I have launced before freezing continue to work fine. -The "half-installed" does not relate to issue. It is just an istallation step that has been logged. -I removed the nvidia driver (apt-get purge nvidia*) but that did not help. -I discovered the kdedebugdialog -tool and logged what happens after the reboot. The log is long but with grep I picked the lines containg "error". Please, see the findings below:
I am not an expert here but I think this suggests problems in the akonadi. What I can do the further debug and resolve the issue. I need to use my computer and I would not like to re-install it with all the applications that I have in place already. Is there an easy way to restore the desktop and have the Kickoff to recognize the applications installed ? P.S. It seems that my version is 4.13.2 on the Kubuntu 12.04 Thanks for you good advice. |
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Manager
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nor am I an expert on akonadi
if after logging in you immediately stop akonadi with
if the issue is akonadi and it affects all users I would guess that there something amiss because of the automatic update and I would reinstall all related packages - this would be anything related by name or description with akonadi, kdepin, kmail and korganizer
OpenSuse Leap 42.1 x64, Plasma 5.x
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iirc the digital clock applet (any clock?) requires akonadi (and don't make me comment on that) as well as the notes applet.
-> try to remove such and see whether the issue persists. |
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Registered Member
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This has been a strage case for me but I think I have now found out where the issue was. It did not directly relate to plasma-desktop.
Tried the aconadictl first but that did not help. Then I rembered what I did the day before the problem occured. I had installed a new server and defined the nfs mounts in the fstab. Reverted the original fstab and .... problem was gone. Changed back to the new /etc/fstab and 'mount -a' --> panels freeze. Changing back to the original fstab-file and remounting with mount -a hangs. After a reboot works, however. So, my -- somehow -- incorrect nfs mounting definition hangs KDE panels. That was strange. I do not understand how that happens. Someone referred to the network manager. Maybe there is a mechanism that way. Anyhow, I found the cause and can concentrate on fixing it. I am posting my fstab that causes the issue just in case, someone can see a problem there that I did not notice. The old nfs-share definition (working) is commented out and the new (problem causing) definition is in use in this version. it is also possible that issue is on the server side. Thank you for all the support !
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Manager
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Google'ing using the search terms:
I'd focus initially on the _netdev parameter and see if there's reports in the *buntu forums regarding it are those partitions mounted when the panel freezes?
OpenSuse Leap 42.1 x64, Plasma 5.x
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