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After upgrading to Fedora 18, I am seeing the following critical messages on /var/log/messages whenever I log on to the computer:

CRITICAL: gsm_manager_set_phase: assertion \`GSM_IS_MANAGER<br>
Gtk-CRITICAL: gtk_main_quit: assertion `main_loops != NULL' failed

Based on my limited knowledge, critical messages and above can affect the usage of my computer if I don't deal with these urgently. Not that they are affecting the current usage of my computer, but I would like to find out more about them (seems to deal with mobile technology and GIMP toolkit?) and how to turn them off if I do not need these services.

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No, I don't think it matters, since it's happening when you close the program, am I wrong? –  warl0ck Feb 14 '13 at 3:32
    
@warl0ck, both when shutdown and powering up. Why doesn't it matter? Care to explain? –  Question Overflow Feb 14 '13 at 3:37
    
Maybe start with how does it affect your usage? –  warl0ck Feb 14 '13 at 3:43
    
Did you run with root user? if yes, please run with your user. –  Mohsen Pahlevanzadeh Feb 14 '13 at 4:09
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1 Answer

Unfortunately, Gnome developers firmly hold the opinion that users never look at the error stream of GUI applications (it's hidden in some log file somewhere, or perhaps directly chucked into the bit bucket). They don't seem to ever look at the errors even when they're working on their programs. “CRITICAL” messages from Gnome applications (and to a lesser extent from KDE applications) mean “the programmer has been careless, but hey, it seems to work, so who cares”.

By the way, GSM is the Gnome Session Manager. Nothing to do with cellular networks.

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I see, to make your answer complete, if it is not something important, can I turn it off? And how to do so? –  Question Overflow Feb 15 '13 at 4:42
    
@QuestionOverflow You can redirect the output to the bit bucket (gnome-application >/dev/null 2>&1) or to a log file (gnome-application >>~/.gnome-debug-messages.log 2>&1). –  Gilles Feb 15 '13 at 11:14
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