I use display from Imagemagic to resize jpeg images. When I do this the
image flickers rapidly and I have to kill the app. This happens on two
different machines (desktop and laptop). It has started quite recently.
I thought it was a problem with Imagemagick but the maintainer for that
can't reproduce it and when I use different WMs (aewm, twm) it is not
there. It doesn't happen with gif images, including those I convert from
the jpeg ones causing the problem.

I can't be sure it is icewm that does this but, as I say, changing the
wm makes it go away.

#include <hallo.h>
* Anthony Campbell [Fri, Oct 02 2009, 10:34:15AM]:

How? What do you run? What and where is the test data? I have no time
for puzzles. In a quick test with my own data, I cannot reproduce it.

What's "rapidly"? Once per second? 2fps? 10fps?

Maybe you changed something else along with the WM, which triggered the
problem?

Regards,
Eduard.

I don't know what else you want besides what is in the data generated by
reportbug. Both machines are running Sid with no desktop manager. I'm
not trying to set puzzles; it's not a major issue for me because I can
get round the problem by converting jpeg files to gif or by using gimp,
but I thought it was worth flagging up a bug report about it.

If I fire up "display", load the image, select "view" and then resize to
half size the flicker appears. I attach a sample jpeg file but it seems
to happen with all of them.

The flicker frequency is at least 10/sec. I've been using icewm for
years (literally) and haven't seen this before.

As I said in my original post, it may well not be icewm per se that
causes the problem; there have been various issues with X recently, but
I have no means of knowing if it is that. But since it happens with
icewm and not other WMs I assume it is connected in some way. I tried
running icewm without any config files but the same thing happens.

Anthony

The problem is not there if I use graphicsmagick instead of imagemagick.

Recently I stared seing things with the nouveau driver where I'd never
think it's possible to happen with X11, creepy rendering artifacts all
over the place. Maybe you had something similar.

In case you are still using IceWM, can you still reproduce this issue?

If you are not using IceWM, would you mind if I just close this report
as a temporary glitch?

Thanks for reporting anyway,
Eduard.