Author Topic: strange lines in PS images  (Read 3532 times)

Offline csonni

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strange lines in PS images
« on: January 21, 2007, 07:48:23 PM »
Any ideas what may be causing these strange lines in my PS images when manipulating and correcting?  I have a fresh installl of OSX (10.4.8), so I would doubt it's an issue with video drivers.  The lines are a nuisance when doing work on an image.  I close the image and it's gone briefly.  No problems with printing.  Just viewing.

Offline kbeartx

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strange lines in PS images
« Reply #1 on: January 21, 2007, 08:33:22 PM »
on what model Mac?

how much RAM?

does this happen on all images, or just certain ones?
« Last Edit: January 21, 2007, 08:34:15 PM by kbeartx »

Offline jepinto

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strange lines in PS images
« Reply #2 on: January 21, 2007, 09:38:43 PM »
Not enough video memory??
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Offline csonni

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strange lines in PS images
« Reply #3 on: January 22, 2007, 04:38:04 AM »
I'm on a G5 1.6 with 1.5 gigs of ram and the stock video card.  It happens on all images (at least the ones I have opened and "played with").  Just opening an image and viewing it won't produce the lines.  It takes just a little bit of alterations to do it.  I should mention that I've never seen this happen on my Powerbook.
« Last Edit: January 22, 2007, 04:55:14 AM by csonni »

Offline MarkM

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strange lines in PS images
« Reply #4 on: January 22, 2007, 07:31:56 AM »
What kind of display?  What is the native resolution of that display, and what resolution are you using when viewing the image?

Offline csonni

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strange lines in PS images
« Reply #5 on: January 22, 2007, 07:46:36 AM »
Viewsonic.  I just tried it both in 1280 x 960 AND 1280X1024 (I take this as native res?) and the lines appeared in both (I always run 1280x1024).  I did notice that the lines only seem to appear when zooming in the image.  Also, the lines go outside of the actual image to the edges of the PS window of the image.  Mousing over (without clicking) seems to act as an eraser on the lines.  I tried images at 300 and 180 for res.  Lines occured on both.
« Last Edit: January 22, 2007, 07:53:28 AM by csonni »

Offline MarkM

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strange lines in PS images
« Reply #6 on: January 22, 2007, 08:03:34 AM »
QUOTE(csonni @ Jan 22 2007, 07:46 AM) [snapback]116649[/snapback]
Viewsonic.  I just tried it both in 1280 x 960 AND 1280X1024 (I take this as native res?) and the lines appeared in both (I always run 1280x1024).  I did notice that the lines only seem to appear when zooming in the image.  Also, the lines go outside of the actual image to the edges of the PS window of the image.  Mousing over (without clicking) seems to act as an eraser on the lines.  I tried images at 300 and 180 for res.  Lines occured on both.



I'll assume you have a regular 4:3 display and not a "widescreen". What are the other choices checked at in the display pref's - ie color ?  Which version of PS are you using; was it installed after the OS installed; is it up to date?

Offline csonni

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strange lines in PS images
« Reply #7 on: January 22, 2007, 08:15:21 AM »
I should mention that my video card is only 64 megs (GeForce FX 5200).  Can't see why that  would be a problem though.
You mentioned display colors.  Just checked and it is set to Thousands.  Moved it to Millions and I can't seem to reproduce the problems with lines.  Could that have been it?

Offline MarkM

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strange lines in PS images
« Reply #8 on: January 22, 2007, 08:36:41 AM »
QUOTE(csonni @ Jan 22 2007, 08:15 AM) [snapback]116653[/snapback]
I should mention that my video card is only 64 megs (GeForce FX 5200).  Can't see why that  would be a problem though.
You mentioned display colors.  Just checked and it is set to Thousands.  Moved it to Millions and I can't seem to reproduce the problems with lines.  Could that have been it?

That it could.

Offline tacit

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strange lines in PS images
« Reply #9 on: January 22, 2007, 02:46:46 PM »
QUOTE(csonni @ Jan 22 2007, 10:38 AM) [snapback]116633[/snapback]
I'm on a G5 1.6 with 1.5 gigs of ram and the stock video card.  It happens on all images (at least the ones I have opened and "played with").  Just opening an image and viewing it won't produce the lines.  It takes just a little bit of alterations to do it.  I should mention that I've never seen this happen on my Powerbook.


The image is becoming corrupted when you manipulate or save it. I have seen two common causes of this problem.

1. You have defective RAM, a defective or failing hard drive, or both. Defective RAM is the most likely culprit.

2. You have Norton Antivirus on your computer. Norton Antivirus has a known and documented bug that causes it to corrupt Photoshop and InDesign files under certain circumstances.
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Offline csonni

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strange lines in PS images
« Reply #10 on: January 22, 2007, 03:05:33 PM »
Changing to Millions of colors in my Display settings solved the problem as far as I can see.

Offline Paddy

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strange lines in PS images
« Reply #11 on: January 22, 2007, 05:01:20 PM »
Seems to be the first thing that occurred to respondents in this thread at Adobe:

http://www.adobeforums.com/cgi-bin/webx/.3bc1ee6b/0

So...let's hope that's all it is! smile.gif
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Offline Xairbusdriver

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strange lines in PS images
« Reply #12 on: January 23, 2007, 11:23:44 AM »
Isn't Adobe one of those companies that decided to 'control' memory usage differently than Apple suggests? But that could have been in pre-OS X. dntknw.gif At any rate, it sounds like a memory problem to me. Even with a large amount of hard drive space, there may not be enough contiguous space and that may be causing problems, assuming PS is losing track of what's where. dntknw.gif I suspect that the images are much larger than the 64MB video RAM could handle, also, thus the need for on-board or Virtual RAM. If changing the color 'gamut' works, so be it. Just doesn't seem logical. OTOH, 'logic' often escapes my grasp! blush-anim-cl.gif
« Last Edit: January 23, 2007, 11:24:26 AM by Xairbusdriver »
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