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KDE stops loading after log-in screen
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Registered Member 
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hi guys,
i've encountered pretty stubborn problem and couldn't find anything useful with search. my problem is that after kernel upgrade to 3.2.0-27-generic, kde stops loading after the log-in screen. after entering username/password, login window disappears and i'm left with mouse cursor and default screen background. alt+tab works, but it shows that there are "no active windows" whatsoever. i tried to check the X0 log in /var/ directory, but it seems to contain any major error messages. dmesg also does not have any major messages. disk usage is mild, more that 16gb available, so this is not a space issue. alt+f2 works and i can log in. i have deleted most of config files that starts with ".", but the problem is still there. i've stopped kdm, deleted .xsession-error log file, started kdm and tried to log in to get a fresh log, so there it is:
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Manager
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can you create a new user and try it? the adduser <username> command is the easiest if you have it, else use: useradd <username> followed by passwd <username>
when you up'ed your Kernel did you also up the Nvidia driver?
OpenSuse Leap 42.1 x64, Plasma 5.x
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Administrator
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Also, the log you posted indicates that X itself actually goes down midway through KDE startup, which is unusual.
Are you able to use Alt + F2 to launch a terminal, or plasma-desktop?
KDE Sysadmin
[img]content/bcooksley_sig.png[/img] |
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Registered Member
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i've created new user and i still could not log in.
can't really remember if nvidia was updated, i usually do not check what software gets updated so i can check the update logs if they exist? i'm able to switch sessions with alt+ctrl+f1/f2/... but alt+f2 does not work. alt tab works but it shows that there are no windows to display. |
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Manager
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the Nvidia drivers must be compiled for the kernel installed so if you up'ed the kernel and are using Nvidia drivers compiled for the previous kernel you would have an issue.
what is result of
what distro are you running? do you compile your Nvidia drivers?
OpenSuse Leap 42.1 x64, Plasma 5.x
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Registered Member
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i'm running latest kubuntu 12.10 and all updates are done via application manager. i'm trying to avoid compiling and building my own software to minimize the risk of failure. |
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Administrator
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The log you posted before indicates that X itself actually goes down midway through KDE startup, which is unusual.
Are you able to use Alt + F2 to launch a terminal, or plasma-desktop?
KDE Sysadmin
[img]content/bcooksley_sig.png[/img] |
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Registered Member
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no, i can't use alt+f2, nothing happens. only thing i can make kde do is alt+tab and it shows that there are no open windows.
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Administrator
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Okay, it looks like the only thing that is starting is KWin. For the test of KDE, it seems to lose it's connection (or fail to establish) a connection to X, preventing startup from really getting into motion.
Does this happen under a new user as well (just to rule out local configuration issues)?
KDE Sysadmin
[img]content/bcooksley_sig.png[/img] |
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Registered Member
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i've tried both - first deleted all local conf files, but after this failed i created new user and it failed again.
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Registered Member
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bcooksley, where should i check what is starting and what looses connection to X, and why? what logs are not yet checked? it seems that i'm not the only one who is affected by this so i would like to know the culprit of this.
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Administrator
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My primary suspect here would be the Nvidia driver. Could you temporarily disable it in favour of Vesa or a similar basic driver?
KDE Sysadmin
[img]content/bcooksley_sig.png[/img] |
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