x2go-announcements November 2011

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[X2go-Announcement] NX workaround packages, temporarily SOLVES: crashing X2Go sessions
by Mike Gabriel 09 Nov '11

09 Nov '11

Dear all, (resending this mail to x2go-user, x2go-dev, corrected mail address of announcement list, fixed minor inaccuracies of the first version sent to the lists) as many of you have reported, there are major issues with the version of NoMachine's NX libraries that are currently provided on packages.x2go.org and in X2Go's Ubuntu Launchpad. The occurring crashes of X2Go sessions do not relate to the code itself but to the way the code (from X2Go Git) currently is built (i.e. compiled and packaged). Only five weeks ago, Alex, Reinhard and Mike could narrow the problems down to the build method being used. The issues probably also apply to the way other NX related projects build their (Debian-ic) packages. So, if anyone needs more details on this, feel free to contact us on this list. As a matter of fact, we currently can't consider the available NX libraries provided on packages.x2go.org (with obvious effect on x2goagent) as ,,stable'' at all; session crashes can easily be reproduced on various setups. Certain actions within the X2Go session cause naughty reconnect or disconnect messages for the client user and many times the sessions die seemingly without reason. This problem is due to NX libraries being built against the distribution's X server development files and not against the development files of nx-X11 (Xserver provided by NoMachine). Unfortunately, the former build method, however, has been state-of-the-art for the Debian-like packages ever since. We are working on a new way of building those packages, see below. As there have been many complaints we'll respond by offering intermediate packages that do not contain these problems. However, these packages have been built in a non-Debian state-of-the-art way and the solution provided from us is only a temporary workaround until we have solved the package build method for these packages. Alex has built packages using a non-Git based build environment, one we used before we changed to working with Git. The provided packages have the same package names as found in Git, they also have a slightly higher version number so your systems will upgrade easily if you use the ,,workaround'' package set: libxcomp3 libxcompext3 libxcompshad3 These new packages should do their job well, as we can't reproduce the reported crashes with them anymore. Currently, we are working with high pressure on cleanly-built NX packages (see: Git project nx-libs.git, test branch, also x2goagent.git, test branch), so that we can provide Git based NX packages soon again. DEBIAN ====== If you want to use those packages on Debian, please make sure that you have deb http://packages.x2go.org/debain squeeze main (or wheezy main, sid main) as package source configured in your APT system. If that is the case simply upgrade the above named packages and then you should get the workaround NX packages installed. $ apt-get update $ apt-get install libxcomp3 libxcompext3 libxcompshad3 If encountering errors during installation, also make sure to uninstall all development packages around NX libs before upgrading to the workaround package set: $ apt-get remove libxcomp-dev libxcompshad-dev libxcompext-dev $ apt-get remove libxcomp3-dbg libxcompshad3-dbg libxcompext3-dbg We'll keep the NX workaround packages in the "main" area of our Debian repos as long as needed. You'll still have access to the git based packages using the "heuler" area. (deb http://packages.x2go.org/debian squeeze heuler). UBUNTU ====== For people who use Ubuntu GNU/Linux and install X2Go from Launchpad the solution is not as simple. We have provided tar.gz files containing the needed packages. Download the tar.gz file appropriate for your Ubuntu version from http://packages.x2go.org/nx-3.5-workaround/ubuntu/ Extract your downloaded tarball (=tar.gz file) and install packages manually (e.g. for Ubuntu oneiric): $ mkdir ubuntu-x2go $ cd ubuntu-x2go $ wget http://packages.x2go.org/nx-3.5-workaround/ubuntu/nx-3.5-workaround_ubuntu-… $ tar -xvzf nx-3.5-workaround_ubuntu-oneiric.tar.gz $ eval $(dpkg-architecture -s) $ dpkg -i *${DEB_HOST_ARCH}*.deb When encountering problems, also make sure to remove the development packages around NX before installation of the workaround packages: $ apt-get remove libxcomp-dev libxcompshad-dev libxcompext-dev $ apt-get remove libxcomp3-dbg libxcompshad3-dbg libxcompext3-dbg This is a temporary solution for the time we can't guarantee that the Git based built packages are stable. From our perspective stability should come first, but of course we will try hard to solve the build problem so that we can use our X2Go Git based build environment for NX libs, as well (again). Regards, Heinz & Alex & Mike -- DAS-NETZWERKTEAM mike gabriel, dorfstr. 27, 24245 barmissen fon: +49 (4302) 281418, fax: +49 (4302) 281419 GnuPG Key ID 0xB588399B mail: mike.gabriel(a)das-netzwerkteam.de, http://das-netzwerkteam.de freeBusy: https://mail.das-netzwerkteam.de/freebusy/m.gabriel%40das-netzwerkteam.de.x…

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x2go-announcements November 2011