[lug] xv with cron and screensaver

[Zan Lynx]

You could try forcing the screensaver off when you want to display
images.  I tried using xscreensaver-command, but it does not accept any
commands while locked.  If you don't lock your display, that might not
be a problem, and you could use xscreensaver-command -deactivate. 
Otherwise, you can do a killall xscreensaver and restart it later.

On Tue, 2003-12-30 at 16:52, Gary Hodges wrote:
> I run a cron job early every morning that that displays a series of 
> images with xv.   When I attempt to page through the images using the 
> space bar the xv window(s) disappear.  I had this problem back with 
> RH7.2 and it was solved by putting the following line in my Perl script:
> 
> $ENV{DISPLAY} = ':0.0';
> 
> The lines in the script that run xv are:
> 
> system "/usr/X11R6/bin/xv -display :0.0 -geometry -314+5 *.jpg &";
> system "/usr/X11R6/bin/xv -display :0.0 -geometry -15+5 *.png &";
> 
> Since I installed SuSE v9.0 I have not been able to get this to work.  I 
> believe it is related to the screensaver.  If I set the cron job to run 
> at a time when I am working on the machine, i.e no screensaver running, 
> everything works as expected.  If the screensaver is running when the 
> job runs, the xv window(s) will disappear when I attempt to page through 
> the images.  The following message is emailed to me when I attempt to 
> page through the images:
> 
> X Error: BadWindow (invalid Window parameter)
>  Major Opcode:  40
> X Error: BadWindow (invalid Window parameter)
>  Major Opcode:  40
> 
> Cheers,
> Gary
> 
> P.S.  I sent this post yesterday and it never came through.  When this 
> happened before I wasn't seeing any posts, but this time several have 
> come through since my first attempt, including one from me.  So, 
> hopefully this won't be duplicated.
> 
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-- 
Zan Lynx <zlynx at acm.org>
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