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Thread: Openbox-LXDE notification problem: message color unreadable

  1. #1
    Junior Member
    Join Date
    Aug 2011
    Posts
    24

    Openbox-LXDE notification problem: message color unreadable

    Hallo,

    I succeeded to start Knoppix with Openbox-LXDE window manager instead of Metacity. I wanted this because I am not satisfied with Compiz, nor Metacity. Bugs, high resource-usage, they does not support the effective work. But Openbox-LXDE is very fast, highly customizable, lightweight and just works. In one word: it is wonderful!
    How I achieved this:
    First, you have to appply "nocompiz" and "kopik_ncwm" cheatcodes.
    Then edit /etc/X11/Xsession.d/45knoppix file.
    Code:
    # kopik.m: use openbox-lxde instead of metacity with "kopik_ncwm" cheatcode
    kopik_ncwm=metacity
    case "$CMDLINE" in *\ kopik_ncwm*) kopik_ncwm=openbox-lxde;; esac
    for LXDECONFIG in "$HOME/.config/lxsession/LXDE/config" "$HOME/.config/lxsession/LXDE/desktop.conf"; do
     [ -r "$LXDECONFIG" ] || continue
     if [ -n "$COMPIZ" ]; then
      if grep -q -v '^window_manager *= *compiz' "$LXDECONFIG" 2>/dev/null; then
       # CAUTION: lxsession no longer supports commandline optione for window_manager!
       sed -i -e 's|^window_manager *=.*|window_manager=compiz|g' "$LXDECONFIG"
      fi
     else
      if grep -q '^window_manager *= *compiz' "$LXDECONFIG" 2>/dev/null; then 
        sed -i -e 's|^window_manager *= *compiz.*|window_manager='"$kopik_ncwm"'|g' "$LXDECONFIG"
      fi
     fi
    done
    As you can see, one still can use Metacity by not applying "kopik_ncwm" boot option.

    Unfortunately, nothing is perfect: now there is an annoying problem: if Knoppix starts with Openbox-LXDE window manager, the notifications are invisible: maybe with black fonts in a very dark background. So, they are totally unreadable. But if I apply "-t 0" option, the text is still visible.
    Code:
    $ notify-send test -t 0
    The bug is like described in the following page:
    Notification message colour unreadable with "GNOME Classic" session
    So, the problem is related somehow to the Openbox-LXDE session, but I do not understand how. Anyone has idea how to resolve this issue?

  2. #2
    Junior Member
    Join Date
    Aug 2011
    Posts
    24
    Clarifications: Not only Openbox-LXDE, but also Metacity wm is affected. It is a mystery for me why with Compiz window manager the notifications are OK...
    Knoppix version: 8.6.0. But I am sure that the latest
    Knoppix version (8.6.1) has the same notification problem since notify-osd is the same version: 0.9.35+15.04.20150126-1+b1. So, not the notify-send is the problem, but notify-osd daemon.

    I think this problem cannot be resolved because notify-osd is unconfigurable. I use this workaround:
    * use notify-send always with "-t 0" option or zenity, xmessage instead of notify-send in scripts
    * switch off notifications of applications to get rid of annoying black boxes

    I run this script after X-start to disable notifications:
    Code:
    #!/bin/sh
    ################################################################################
    # gsettings v2020.02.12
    # (C) SZILGYI Zsolt; License: GPL V2
    # Knoppix 8.6.0: notify-osd bug: LXDE, openbox-lxde and metacity: unreadable
    # messages. Use notify send with "-t 0" or zenity (xmessage) for your scripts.
    # This script disable messages of nm-applet and gnome-mplayer (and more...).
    # Edit the script to add more applications. Execute in GUI.
    ################################################################################
    
    
    type gsettings >/dev/null 2>&1 || exit
    test "$DISPLAY" || exit
    
    
    if type nm-applet >/dev/null 2>&1; then
     for i in disable-disconnected-notifications disable-vpn-notifications \
     disable-connected-notifications suppress-wireless-networks-available; do
      gsettings list-keys org.gnome.nm-applet | grep -q "$i" &&
      test $(gsettings get org.gnome.nm-applet "$i") = false &&
      gsettings set org.gnome.nm-applet "$i" true
     done
    fi
    
    
    if type gnome-mplayer >/dev/null 2>&1; then
     for i in show-status-icon show-notification; do
      gsettings list-keys apps.gnome-mplayer.preferences | grep -q "$i" &&
      test $(gsettings get apps.gnome-mplayer.preferences "$i") = true &&
      gsettings set apps.gnome-mplayer.preferences "$i" false  
     done
     
     gsettings list-keys apps.gnome-mplayer.preferences | \
     grep -q disable-cover-art-fetch &&
     test $(gsettings get apps.gnome-mplayer.preferences disable-cover-art-fetch) \
     = false &&
     gsettings set apps.gnome-mplayer.preferences disable-cover-art-fetch true
     
     gsettings list-keys apps.gnome-mplayer.preferences | grep -q resume-mode &&
     test $(gsettings get apps.gnome-mplayer.preferences resume-mode) -eq 0 &&
     gsettings set apps.gnome-mplayer.preferences resume-mode 1
    fi
    
    
    exit
    Start it with /etc/xdg/autostart/gsettings.desktop
    Code:
    [Desktop Entry]
    Name=GSettings
    Exec=/.../.../gsettings
    Terminal=false
    Type=Application
    Currently I do not use persistence, so I do not know if the script must be run at every start (/etc/xdg/autostart/gsettings.desktop) in that case.
    Last edited by szzsqing1; 02-12-2020 at 04:32 PM.

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