Comment 0 for bug 1243354

I have a setup with two video cards, each running a separate X screen (DISPLAY=:0.0 and :0.1), using fglrx driver.

For the most part this is working fine, except that I cannot run Xfce4-terminal on both X screens at once. Several instances can run on each screen, but as soon as I start one on one screen, all instances on the other screen terminate with an X error. No other program seems to exhibit this behavour. It happens whether transparent background is enabled or not. lxterminal is able to display a transparent background on both screens simultaneously.

Example session in lxterminal:
$ echo $DISPLAY
:0.0

$ DISPLAY=:0.0 xfce4-terminal &
[1] 5078
# at this point, an xfce4-terminal window is open next to the lxterminal window on display :0.0
# it outputs the following message to stderr:

(xfce4-terminal:5078): GLib-WARNING **: (/build/buildd/glib2.0-2.38.0/./glib/gerror.c:390):g_error_new_valist: runtime check failed: (domain != 0)
Failed to connect to session manager: Failed to connect to the session manager: SESSION_MANAGER environment variable not defined

# now I try to start another xfce4-terminal on display :0.1
$ DISPLAY=:0.1 xfce4-terminal &
[2] 5133

$ The program 'xfce4-terminal' received an X Window System error.
This probably reflects a bug in the program.
The error was 'BadMatch (invalid parameter attributes)'.
  (Details: serial 480 error_code 8 request_code 1 minor_code 0)
  (Note to programmers: normally, X errors are reported asynchronously;
   that is, you will receive the error a while after causing it.
   To debug your program, run it with the --sync command line
   option to change this behavior. You can then get a meaningful
   backtrace from your debugger if you break on the gdk_x_error() function.)

(xfce4-terminal:5133): GLib-WARNING **: (/build/buildd/glib2.0-2.38.0/./glib/gerror.c:390):g_error_new_valist: runtime check failed: (domain != 0)
Failed to connect to session manager: Failed to connect to the session manager: SESSION_MANAGER environment variable not defined

[1]- Exit 1 DISPLAY=:0.0 xfce4-terminal

# now an Xfce4-terminal window is shown on display :0.1, but the window I previously opened on :0.0 is gone, as indicated by the X error message.

The same issue happens if I use `xfce4-terminal --display=:0.0` instead of setting the DISPLAY variable. Adding --geometry to ensure the window actually opens within the boundaries of the display doesn't help either. (Anyway, it was always opening within the display boundaries even without that option, but just a hunch that might have helped.)

syslog, kern.log and Xorg.0.log don't show anything interesting when this happens.

I suspect a driver bug that Xfce4-terminal is triggering somehow, but I don't know how to investigate. (Unfortunately I couldn't get the open-source drivers to work with this setup at all.)

ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: xfce4-terminal 0.6.2-3ubuntu1
ProcVersionSignature: Ubuntu 3.11.0-12.19-generic 3.11.3
Uname: Linux 3.11.0-12-generic x86_64
NonfreeKernelModules: fglrx
ApportVersion: 2.12.5-0ubuntu2
Architecture: amd64
Date: Tue Oct 22 14:30:16 2013
InstallationDate: Installed on 2013-10-22 (0 days ago)
InstallationMedia: Lubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
MarkForUpload: True
SourcePackage: xfce4-terminal
UpgradeStatus: No upgrade log present (probably fresh install)