[?]Strange persistent artifact on screen with Knoppix 8.6 after "Suspend-Restart"s

[szzsqing1]

I tried this, but can't seem to identify the window that is the mischief-maker.

Yes, it happened in the past and somehow the "bug" was saved, and now you cannot find that specific reason. If it was saved in some cache maybe deleting the (hidden) cache dirs in your home dir also helps. But I really do not know the reason and as the LXDE dev has stopped there are not too much info on the net.

When I mentioned LXQt and TDE, I suggested this to the developer of Knoppix OS, to replace the present default LXDE, as a better option. I did not mean that now it is actually an option in KNX to choose. Of course you can try to install these desktop environments, but not much chance to succeed. I already tried to install TDE and it is just impossible in Knoppix (because this a special Debian distro, FrankenDebian)...

Also from kde|gnome|icewm|fluxbox|openbox|larswm|evilwm|twm options actually only the first two are real options. In past maybe the others were real options but nowadays they are dropped. Openbox boot option still worked not too long ago, but not in the current version. If you start (-ed in the past) KNX with OB you get a very simple OB environment without lxsession, lxpanel, lxmenu, etc. So not very usable. What I recommended you, LXDE-OB is a real LX session with OB window manager, not with Compiz window manager (the main difference is that you will not get Compiz effects, but everything else can be configured and works very well). This could be accomplished in older KNX versions (by editing some config files). Otherwise, LXDE-OB is the most used LX session type, Debian Live LXDE uses this, too.

LXDE-OB can be used also in current KNX instead of LXDE-Compiz, but needs to be installed some debs. Some time ago I read a tutorial about this issue, and this evening I tried to find that article. Without success because meantime that page disappeared from the net!

http://students.engr.scu.edu/~sschaeck/

Fortunately there is a website (archive.org) which archives the WWW (among other things), and I have found the page there. Here is the URL (saved at 2019-11-14):

How to get most out of Knoppix 8
https://web.archive.org/web/20191114210258/http://students.engr.scu.edu/~sschaeck/knoppix/index.html

So, it seems that also in your version you have to install some debs in order to use LXDE-Openbox. But according to the tutorial it is possible. I did not try. Good luck you!

[rajibando]

... LXDE-OB can be used also in current KNX instead of LXDE-Compiz, but needs to be installed some debs. ...

Since I use the earlier version, I shall try once. Thank you for your links and suggestions. Also, in the meanwhile I shall try identifying the mischief-making program drawing that window and making that artifact appear.