4

I am using Lubuntu 18.04
lxsession-default-terminal (which is used by PCManFM (F4) -> open Terminal in folder) does not open a Terminal-Window anymore.

(I can only see a flashing window [open and closes immediatelly])

This problem exists on 3 different PCs
(2x upgraded from 17.10 to 18.04, 1x fresh install as VM [minimal Desktop]).

INFO:
I know, PCManFM can be configured to use a different command to open a terminal.
But I am curious why lxsession-default-terminal does not open a terminal anymore.
Calling lxsession-default-terminal directly only outputs: Launching terminal manager

EDIT:
This is from the logfiles (~/.cache/lxsession/Lubuntu/run.log) after I hit F4 in PCManFM
(see: lxterminal exit with this type of exit: 0):

(duplicate lines removed!)

Launching terminal manager
** Message: 12:20:49.616: dbus-lxde-session.vala:796: Start Terminal Manager
** Message: 12:20:49.618: app.vala:76: Launching lxterminal 

(lxterminal:1604): dbind-WARNING **: 12:20:49.652: Error retrieving accessibility bus address: org.freedesktop.DBus.Error.ServiceUnknown: The name org.a11y.Bus was not provided by any .service files

(lxterminal:1604): GLib-CRITICAL **: 12:20:49.652: g_find_program_in_path: assertion 'program != NULL' failed

(lxterminal:1604): Vte-WARNING **: 12:20:49.716: (../../src/vtegtk.cc:1906):int vte_terminal_match_add_gregex(VteTerminal*, GRegex*, GRegexMatchFlags): runtime check failed: (g_regex_get_compile_flags(gregex) & G_REGEX_MULTILINE)

(lxterminal:1604): GLib-CRITICAL **: 12:20:49.716: g_path_get_basename: assertion 'file_name != NULL' failed

** (lxpanel:901): WARNING **: 12:20:49.762: lxpanel : X error: BadWindow (invalid Window parameter)

(lxpanel:901): Gdk-CRITICAL **: 12:20:49.762: IA__gdk_window_get_screen: assertion 'GDK_IS_WINDOW (window)' failed

(lxpanel:901): Gdk-CRITICAL **: 12:20:49.762: IA__gdk_screen_get_monitor_at_window: assertion 'GDK_IS_SCREEN (screen)' failed

(lxpanel:901): GLib-GObject-CRITICAL **: 12:20:49.762: g_object_unref: assertion 'G_IS_OBJECT (object)' failed

** (lxpanel:901): WARNING **: 12:20:49.763: lxpanel : X error: BadWindow (invalid Window parameter)

(lxpanel:901): GLib-CRITICAL **: 12:20:49.763: g_string_insert_len: assertion 'len == 0 || val != NULL' failed
** Message: 12:20:49.764: app.vala:130: lxterminal exit with this type of exit: 0

** (lxpanel:901): WARNING **: 12:20:49.765: lxpanel : X error: BadWindow (invalid Window parameter)
Ben
  • 752
  • I have a clean install of Lubuntu 18.04 in a VM. Pressing F4 in PCManFM opens lxterminal. Pressing Alt+F2 and selecting lxsession-default-terminal also opens lxterminal. So something may have gone wrong during the upgrade. If you wish, try renaming ~/.config to ~/.config.bak. Log out and log back in. If things work as they should, you know some file/folder in ~/.config was messed up. – DK Bose May 16 '18 at 09:34
  • 1
    @DKBose Please see my edit. I tried also a fresh installation (Lubuntu 18.04). Same problem here. – Ben May 16 '18 at 10:02
  • Mine is a full install. I didn't choose the minimal option. – DK Bose May 16 '18 at 10:14
  • I see a lot of very similar errors in the same log file but lxterminal launches in both cases. This is the first time, we've had the minimal option and maybe there are some unintentional omissions? – DK Bose May 16 '18 at 10:42
  • Yes, LXTerminal launches (I can see a window trying to open)...but it closes immediately after 0.5 sec. (so, I only see a flashing [open/close] window when hitting F4) – Ben May 16 '18 at 10:47
  • Please try the full install in your VM. – DK Bose May 16 '18 at 12:25
  • I can try this, but I doubt this will help to make it work on my other 2 existing computers (which were upgraded from 17.10). I highly want to avoid a complete new installation of these 2 computers. – Ben May 16 '18 at 12:30
  • I suppose you also posted your question at https://forum.lxde.org/viewtopic.php?f=8&t=37779 – Denilson Sá Maia Jul 04 '18 at 14:33

2 Answers2

1

This is not a real answer, but my comment is longer than the maximum size.

I'm also affected. I did a distro upgrade to 18.04 (from 17.10), and then this issue started. Well, I haven't debugged enough, but I have the same symptoms as you.

I can use lxsession-default-apps to change the default terminal, but it doesn't matter. Clicking "Reload" (to open a new terminal from lxsession-default-apps interface), or running lxsession-default-terminal both fail the same way: a new window briefly shows and disappears.

/usr/bin/lxsession-default-terminal is actually a shell script that runs dbus-send --session --print-reply --dest="org.lxde.SessionManager" /org/lxde/SessionManager org.lxde.SessionManager.SessionLaunch string:"terminal_manager" string:"$PWD", which makes me believe there is something wrong within LXDE session manager.

I'm running LXDE with OpenBox. I can optionally run compton, but it doesn't change anything (other than having compton print dozens of BadWindow messages).

As a workaround, I can edit ~/.config/openbox/lubuntu-rc.xml and remap the terminal shortcuts to lxterminal directly.

Denilson Sá Maia
  • 3,189
0

On my install, I have the following options for default terminal manager:

  • Disable
  • Terminal emulator
  • LXTerminal

If I set this to "LXTerminal", I have the problem you described above, including the same error messages. However, if I change it to "Terminal emulator", everything works as expected.

Of course, this doesn't explain the problem but will hopefully fix it for you too.

Big McLargeHuge
  • 849
  • 1
  • 9
  • 15