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

[szzsqing1]

Although you do not write about this, I think that this problem does not occur in live mode, and, as you said, it is related to your persistent changes. Probably it is a Knoppix LXDE (X, Compiz?) bug. I remember that I had similar experiences, not after suspend, but in plain LXDE session: did not disappear the window size notification from the desktop. If I remember well, I resolved this by resizing again a window with mouse or logging out/in from X. But the latest is also problematic (at least in Knoppix 9.1 which I use), the implementation of logging out/in is buggy. If not a problem for you, you can use Gnome or KDE, or replace your persistent /home/knoppix directory with the live version one, of course in a live session (first save your important configuration dirs, files, and after replace them back). Maybe it helps if you use LXDE-Openbox session instead of LXDE-Compiz. Unfortunately in current Knoppix you have to use the buggy Compiz, cannot switch to LXDE-Openbox.

Nowadays the Knoppix LXDE implementation is pretty buggy, a lot of things changed during Knoppix history... There are Knoppix scripts that are not needed anymore or does not function as expected. Should be done a general maintenance. Or even better changing the default LXDE to LXQt, wich is actively maintained, or to Trinity desktop, wich has a lot of features, it is lightweight, and actively maintained, too.

[rajibando]

Thank you, szzsqing1, for your informative post.Your sharing of your own experience really helped.

... I think that this problem does not occur in live mode, and, as you said, it is related to your persistent changes ....

I haven't checked, as I use persistent always. I will, in the coming days, and post my report.

... I remember that I had similar experiences, not after suspend, but in plain LXDE session: did not disappear the window size notification from the desktop...

In my case, the artifact appears after revival from Suspend.

... If I remember well, I resolved this by resizing again a window with mouse ...

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

... or logging out/in from X. .

Yes, this too works.

... But the latest is also problematic (at least in Knoppix 9.1 which I use), the implementation of logging out/in is buggy. If not a problem for you, you can use Gnome or KDE, or replace your persistent /home/knoppix directory with the live version one, of course in a live session (first save your important configuration dirs, files, and after replace them back)..

Thank goodness that I didn't upgrade to 9.1! But one note: I use an entire ext4 partition with persistent. I have an old post describing the steps. With a file knoppix-data.inf at the root of the partition, with the line having these entries:

(partitionNumber)      /(where the data files are stored)    (partition type)

... Maybe it helps if you use LXDE-Openbox session instead of LXDE-Compiz. Unfortunately in current Knoppix you have to use the buggy Compiz, cannot switch to LXDE-Openbox..

Ok. I will try. Actually, I haven't ever used openbox seriously, so I am not very comfortable with it. Will try. Knoppix has these options: kde|gnome|icewm|fluxbox|openbox|larswm|evilwm|twm.
I will also try with no3D.

... Or even better changing the default LXDE to LXQt, wich is activey maintained, or to Trinity desktop, wich has a lot of features, it is lightweight, and actively maintained, too.

I am not sure if Trinity or LXQt is at all in the Knoppix 8.6 DVD ISO. I will check.

Actually, I have a Debian environment installed, but I prefer using Knoppix, as I have been using it consistently for the last 14 years, from 5.something. I have wonderful memories with Knoppix and a few good friends, whom I don't find here any more.

In the end, thanks once more for replying to my post, sharing your experience. Much appreciated.