# Quartz bug - user screen picture

**URL:** <https://discourse.libsdl.org/t/quartz-bug-user-screen-picture/10428>\
**Category:** SDL Development\
**Created:** [March 25, 2004, 1:04pm UTC](https://discourse.libsdl.org/t/quartz-bug-user-screen-picture/10428 "2004-03-25T13:04:06Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Gabriel\_Gambetta](https://discourse.libsdl.org/user_avatar/discourse.libsdl.org/gabriel_gambetta/32/4004_2.png) [@Gabriel\_Gambetta](https://discourse.libsdl.org/u/Gabriel_Gambetta)\
**Post date:** [March 25, 2004, 1:04pm UTC](https://discourse.libsdl.org/t/quartz-bug-user-screen-picture/10428/1 "2004-03-25T13:04:06Z")

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In addition to the test case I sent eariler (which  
it hasn’t showed up yet…) there’s a picture of the  
user’s monitor showing the bug :

[http://www.mrio-software.com/macbug.jpg](http://www.mrio-software.com/macbug.jpg)

I thought it was much worse…

Ing. Gabriel Gambetta  
ARTech - GeneXus Development Team  
ggambett at artech.com.uy

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**Author:** ![Daniel\_Hedrick](https://discourse.libsdl.org/user_avatar/discourse.libsdl.org/daniel_hedrick/32/190_2.png) [@Daniel\_Hedrick](https://discourse.libsdl.org/u/Daniel_Hedrick)\
**Post date:** [March 25, 2004, 1:29pm UTC](https://discourse.libsdl.org/t/quartz-bug-user-screen-picture/10428/2 "2004-03-25T13:29:00Z")

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Quoting Gabriel Gambetta :

> In addition to the test case I sent eariler (which  
> it hasn’t showed up yet…) there’s a picture of the  
> user’s monitor showing the bug :
> 
> [http://www.mrio-software.com/macbug.jpg](http://www.mrio-software.com/macbug.jpg)
> 
> I thought it was much worse…

Ah-HAH! I’m no hardware expert, but I believe this is just  
an artifact of switching resolution and frequency while the  
monitor is on. The monitor should have some sort of control  
panel that allows the screen position to be tweaked – most  
multisync monitors do. I have this trouble with my monitor,  
a ViewSonic G790. I’ve always just repositioned the screen  
using the controls. Once the position is established for  
said rez & freq, it’s constant (at least for me).

Maybe this is the problem; maybe not. Good luck!

-daniel–  
Do your kids need more space?  
Get Low-cost Loft Bed Plans!  
[http://loft.hedrick.org/](http://loft.hedrick.org/)