Using xrandr 1.3.2 (supplied via Mandriva 2010.1). According to this bug report, <https://qa.mandriva.com/show_bug.cgi?id=59854> "xrandr --delmode output name" can only delete user added modes. The man page does not say that. Attempting to delete an un-deletable mode gives an error message that I found confusing.
Mass closure: This bug has been untouched for more than six years, and is not obviously still valid. Please file a new report if you continue to experience issues with a current server.
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