#28 - Xfixes issues with Ubuntu precise and above

X2Go Bug report logs - #28
Xfixes issues with Ubuntu precise and above

Reported by: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>

Date: Fri, 14 Sep 2012 14:38:45 UTC

Severity: normal

Tags: confirmed

Found in version 3.1.1.3

Done: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>

Bug is archived. No further changes may be made.

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Date: Wed, 09 Jan 2013 16:22:18 +0100
From: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>
To: 28@bugs.x2go.org
Subject: Xfixes issues with Ubuntu precise and above
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Re-opening this issue as it is not 100% solved and understood... The situation is: with extensions XFIXES enabled in nxagent/x2goagent we observe KDE crashes on Ubuntu precise and above. The crashes happen in kwin. The problem could be tracked down to some problems in libxfixes. The change must have been between libxfixes from oneiric and libxfixes from precise. On IRC I wrote this about the observed issue: 15:48 < sunweaver> siretart: I might have found the libxfixes issue with libxfixes since precise... 15:48 < sunweaver> at least I have several question marks... 15:49 < sunweaver> the xserver-xorg src package in precise has a patch named: 500_pointer_barrier_thresholds.diff 15:50 < sunweaver> this patches in xfixes v6 code into the xfixes v5 extension 15:51 < sunweaver> in that patch you can also see that the xfixes extension version is also incremented (5 -> 6) 15:52 < sunweaver> the libxfixes 1:5.0-4ubuntu4 and the package x11proto-fixes-dev 1:5.0-2ubuntu1 package also have patches for this improvement: both named 01_fixesproto-v6.diff. 15:54 < sunweaver> However, when looking at a build of libxfixes 5.0-4ubuntu4 I see a config.h file that announces itself with PACKAGE_VERSION 5.0. 15:55 < sunweaver> So, my current guess is that libxfixes annouces itself as v5 and also does a xlib-xserver version handshake based on v5, but then executes code from libxfixes v6 which then breaks nxagent. 15:55 < sunweaver> Is that possible? Can anyone comment on this? Mike -- DAS-NETZWERKTEAM mike gabriel, rothenstein 5, 24214 neudorf-bornstein fon: +49 (1520) 1976 148 GnuPG Key ID 0x25771B31 mail: mike.gabriel@das-netzwerkteam.de, http://das-netzwerkteam.de freeBusy: https://mail.das-netzwerkteam.de/freebusy/m.gabriel%40das-netzwerkteam.de.xfb

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X2Go Bug report logs - #28 Xfixes issues with Ubuntu precise and above

X2Go Bug report logs - #28
Xfixes issues with Ubuntu precise and above