https://bugs.freedesktop.org/show_bug.cgi?id=76742
Priority: medium Bug ID: 76742 Assignee: libreoffice-bugs@lists.freedesktop.org Summary: Startup failure: XDM authorization key matches an existing client Severity: normal Classification: Unclassified OS: Linux (All) Reporter: lb2...@pobox.com Hardware: x86 (IA32) Status: UNCONFIRMED Version: 4.2.2.1 release Component: Libreoffice Product: LibreOffice LibreOffice-4.2.2 frequently but intermittently fails to start on Slackware Linux with the following error: XDM authorization key matches an existing client! /opt/libreoffice4.2/program/soffice.bin X11 error: Can't open display: The startup failure happens about 65% of the time; the other 35% of the time it starts and runs correctly. The problem did not occur with LibreOffice-4.1.4 on the same system. This happens when using XDM as the login manager, and only when XDM-AUTHORIZATION-1 authentication is enabled (as it is by default with xdm). I can disable XDM-AUTHORIZATION-1 and enable only MIT-MAGIC-COOKIE-1 by placing the following into /etc/X11/xdm/xdm-config: DisplayManager*authName: MIT-MAGIC-COOKIE-1 Then the problem goes away, and LibreOffice-4.2.2 always starts correctly. Possibly the same exact issue was reported with Firefox, about 10 years ago, as documented here: https://bugzilla.mozilla.org/show_bug.cgi?id=246313 My understanding is that the problem is caused by a race condition between child and parent processes opening a connection to the X server (hence the intermittent nature), and/or the weakness in XDM-AUTHORIZATION-1 generation of unique tokens. -- You are receiving this mail because: You are the assignee for the bug.
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