hardware problem in HP framebuffer?

From: Carlos Murillo <cmurillo_at_emtelsa.multi.net.co>
Date: Wed Aug 29 07:01:49 2001

Gang:

I asked a question regarding what I thought was a software
problem in Usenet; now it seems that this might actually be
an odd hardware problem in the framebuffer or monitor that I am using
with my HP735. I think that I might actually get better advice
on this list. I am including the posts below; they
appear in reverse chronological order; please start reading
at the bottom.

carlos.


From: cem14_at_cornell.edu (Carlos E. Murillo-Sanchez)
Subject: Re: Some fonts fuzzy/blurry in 10.20 CDE apps
Date: Wed, 29 Aug 01 11:51:53 GMT
Organization: Cornell University Electrical Engineering

Oh-oh. You are right, I have just looked at the image in
another system and it looks fine. Now, this is _very_ hard
to understand: why would some fonts (even some with very
small/narrow features) be displayed fine by the CRX24Z and
others not?

Since thist now seems to a hardware problem, I have
cross-posted to comp.sys.hp.hardware.

One more clue: when an improperly displayed font is against
a light background and you proceed to highlight it such that
it becomes white font over black background, it looks fine!
But if the highlighting is white over some lighter background
(such as yellow in Netscape) the problem remains.

In article <3B8C5279.DD0D1B79_at_hp.com>, Chuck Slivkoff
<charles_slivkoff_at_hp.com> wrote:
>Carlos,
>
>I looked at both your screen captures and I don't see anything
>that looks bad. The font used in the buttons across the top of the
>docs site have been smoothed (anti-aliased), but those are bitmap
>images which will look the same on any display. I don't see any
>problems at all with the other. Perhaps you can edit the images
>and circle some examples of which fonts are causing you the problem.
>
>Can you take a look at your captures from another system? Do they
>look the same? If not, I suspect that you may have a hardware
>problem, most likely with the graphics adapter.
>
>-chuck
>
>Carlos Murillo wrote:
>>
>> I am having a problem with some of the fonts displayed by
>> X apps; they appear washed out, with some of the normally
>> dark pixels appearing in white. Hardware: 735/99, CRX24Z; HPUX 10.20 .
>> I have changed most settings accessible via SAM on the X server,
>> as well as the font sizes in the CDE settings. Nothing happens.
>> Note that not all fonts are rendered improperly; just some of them.
>>
>> I have posted sample screen captures at
>>
>> http://jimulco.autonoma.edu.co/~carlos/hpux/capture1.tif (60k)
>>
>> http://jimulco.autonoma.edu.co/~carlos/hpux/capture2.tif (26k)
>>
>> I have also searched the HP IT Resource Center, but I did not
>> find anything relevant.
>>
>> Does anybody know how to correct this? My eyes are hurting...
>>
>> carlos.

--------------------------------------------------------------
Carlos E. Murillo-Sanchez carlos_murillo_at_nospammers.ieee.org
Received on Wed Aug 29 2001 - 07:01:49 BST

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