[svlug] weird graphics problem

James Sparenberg james at linuxrebel.org
Tue Jan 27 13:15:00 PST 2009


On Tuesday 27 January 2009 13:11:56 James Sparenberg wrote:
> On Tuesday 27 January 2009 12:04:53 David Rosenstrauch wrote:
> > Having a weird problem with my machine's graphics.  Not sure why, 
but
> > text alternates being sharp and blurry in columns across the screen.
> > E.g., if I'm reading an article in my browser, 2 or 3 words will be
> > sharp, then the next 2 or 3 blurry, and so on.  (Does what I'm
> > describing make sense?  If not, then I can post a photo.)  Never 
seen
> > anything like this before.  Usually either the entire screen is 
blurry
> > or none.
> > 
> > This is happening on my Linux box, using the radeon X driver (card 
is 
> a
> > Radeon 9200SE), at 1280x1024 resolution, with a Dell E171FP flat 
panel
> > screen.  Although the video runs through a KVM, I don't believe that 
> is
> > the problem, as the other box connected to the machine (a windows 
box)
> > doesn't experience these problems.
> > 
> > Anyone heard of anything remotely like this or have any clue what 
> might
> > be going on?  I'm not clear on whether this is a software or a 
> hardware
> > issue.
> > 
> > TIA,
> > 
> > DR
> 
> 1.  Are the columns that are blurry consistant or are they moving?
> 
> 2.  If you plug another system into the monitor. (laptop desktop etc.) 
> does it display the same problems?
> 
> Generally. in my experience, a problem of similar nature to this is 
most 
> likely the monitor.  By doing number 2 you can either eliminate the 
> monitor (and it's cables) as the problem or the card.  
> 
> Then if it does move .... borrow a cable from a friend, or friendly 
> computer that does work (referring to the VGA/HDI cable.) and see if 
> that changes things.  
> 
> Final idea from me.  Is there a cell phone parked near the monitor.  
RFI 
> interference does really strange things to monitors and computers in 
my 
> experience.
> 
> James
> 
And for the word Smyths.  Yes I should have said either RFI or RF 
interference not RFI interference.  Sorry.

James





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