I've just tested SSHing from Precise to Natty and everything seems to work fine. So perhaps this is more truthfully a bug in Oneiric.
** Description changed: SSHing (with X11 forwarding enabled) from a Precise machine to an Oneiric machine and running certain X11 forwarded programs causes a crash of the program, either immediately or on the first mouse click on that program's window. I have seen this on two client machines (a laptop and a desktop) running the latest precise release, connecting to either the oneiric desktop release or oneiric server release on the server side. I have also reproduced this with two VirtualBox VMs, connected together with host- only networking and with desktop releases of Oneiric and Precise installed. To reproduce: - On client machine, install Precise with all updates as of 2012-03-29. - On server machine, install Oneiric with all updates as of 2012-03-29. - Set up host-only networking so that machines can ssh to each other. - On client machine, "ssh -X" to the server machine. Then run an X11 application. Some applications will crash immediately or on the first mouse click on that application. On my test VirtualBox setup, applications that always crash on first click: - gnome-terminal - nautilus - aisleriot solitaire - gnome-control-center - file-roller - - firefox - brasero - gcalctool - palimpsest Applications that do not crash: - Libre Office - gimp - banshee - firefox - thunderbird Obviously, this isn't an exhaustive list. When applications crash, they spew out a large error message. On my desktop machine, sshing in to an Oneiric Server install on a physical machine, the programs crash immediately without showing a window, but on my test setup with two VirtualBox VMs, you first have to click on the window to cause it to crash. Sample crash output is attched to this bug report in the crash_output.txt file. OS and Software Versions: Client: ===== lsb_release -rd: Description: Ubuntu precise (development branch) Release: 12.04 apt-cache policy xorg: xorg: Installed: 1:7.6+12ubuntu1 Candidate: 1:7.6+12ubuntu1 Version table: *** 1:7.6+12ubuntu1 0 500 http://gb.archive.ubuntu.com/ubuntu/ precise/main amd64 Packages 100 /var/lib/dpkg/status Server: ====== lsb_release -rd: Description: Ubuntu 11.10 Release: 11.10 apt-cache policy xorg: xorg: Installed: 1:7.6+7ubuntu7.1 Candidate: 1:7.6+7ubuntu7.1 Version table: *** 1:7.6+7ubuntu7.1 0 500 http://mirror.ox.ac.uk/sites/archive.ubuntu.com/ubuntu/ oneiric-updates/main amd64 Packages 500 http://security.ubuntu.com/ubuntu/ oneiric-security/main amd64 Packages 100 /var/lib/dpkg/status 1:7.6+7ubuntu7 0 500 http://mirror.ox.ac.uk/sites/archive.ubuntu.com/ubuntu/ oneiric/main amd64 Packages ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: xorg 1:7.6+12ubuntu1 ProcVersionSignature: Ubuntu 3.2.0-20.33-generic 3.2.12 Uname: Linux 3.2.0-20-generic x86_64 .tmp.unity.support.test.0: ApportVersion: 1.95-0ubuntu1 Architecture: amd64 CompizPlugins: [core,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,unitymtgrabhandles,workarounds,scale,expo,ezoom,unityshell] CompositorRunning: compiz Date: Thu Mar 29 13:32:19 2012 DistUpgraded: Fresh install DistroCodename: precise DistroVariant: ubuntu DkmsStatus: virtualbox, 4.1.10, 3.2.0-20-generic, x86_64: installed ExtraDebuggingInterest: Yes, whatever it takes to get this fixed in Ubuntu InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta amd64+mac (20120327.1) MachineType: Dell Inc. OptiPlex 960 ProcEnviron: LANGUAGE=en_GB:en TERM=xterm LANG=en_GB.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-20-generic root=UUID=587e726d-6c02-4c7f-aec3-843dbfd68f4c ro quiet splash vt.handoff=7 SourcePackage: xorg Symptom: display UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 07/31/2009 dmi.bios.vendor: Dell Inc. dmi.bios.version: A05 dmi.board.name: 0F428D dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 3 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA05:bd07/31/2009:svnDellInc.:pnOptiPlex960:pvr:rvnDellInc.:rn0F428D:rvrA00:cvnDellInc.:ct3:cvr: dmi.product.name: OptiPlex 960 dmi.sys.vendor: Dell Inc. version.compiz: compiz 1:0.9.7.2-0ubuntu4 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.32-1ubuntu1 version.libgl1-mesa-dri: libgl1-mesa-dri 8.0.2-0ubuntu2 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 8.0.2-0ubuntu2 version.xserver-xorg-core: xserver-xorg-core 2:1.11.4-0ubuntu7 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.0-0ubuntu1 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.99~git20111219.aacbd629-0ubuntu2 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.17.0-1ubuntu4 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20111201+b5534a1-1build2 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/968218 Title: ssh x11 forwarding precise to oneiric causes glibc malloc(): memory corruption To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/968218/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
