dpkg-reconfigure -phigh xserver-xorg question

[Gene Heskett]

On Sunday 17 January 2010, Steve wrote:
>On Sun, 17 Jan 2010 15:43:53 -0000, Gene Heskett
>
><gene.heskett at verizon.net> wrote:
>> Greetings all;
>>
>> I have a kubuntu-6.06 LTS machine running my milling machine that
>> occasionally needs maintenance, such as for a failed Antec power supply.
>>
>> Yeah, I know, why did I buy that brand?  Cuz I was a dummy, plain &
>> simple.
>>
>> Anyway, while working on it I had it hooked to a 20" crt monitor, and the
>> subject command line gave me a stunningly good 1920x12xx display on that
>> crt.
>> One of the things I was playing with was the video card as the old TNT
>> in it
>> was looking like a bad solder joint, streaks on the right side of a
>> 1050x720
>> screen.  So I thought great!  This was by using the digital to vga
>> adapter
>> that came with the x1650 Pro agp video card and I was happy as I'd
>> finally
>> found a motherboard that could run this card, the card is one picky bitch
>> about its agp socket.
>>
>> On the way back to its normal job, I plugged in a samsung hidef 22" tv
>> which
>> has a db15 input and which works very well on another machine with 8.04
>> LTS
>> on it.  Its native mode is also 1920xsomething with a 16x9 aspect ratio.
>>
>> The 6.06 LTS install couldn't drive it without re-running the subject
>> line &
>> came up with a 800x600 screen that was pretty badly rendered on that much
>> higher resolution lcd display.  As its normal 17" samsung crt monitor is
>> also
>> similarly crippled when using the vesa driver (I forgot, that is a
>> requirement of the application, vesa is the only driver that doesn't
>> seriously muck with the real time performance), so my question after all
>> this
>> rambling is:
>>
>> Is there a place where I can force the issue?  I feel its probably
>> occurring
>> because the EDID database is too old for either of the monitors it miss-
>> drives.  They are not listed when the gui tool is used.
>>
>>  I know that smaller 17" samsung monitor can be driven at something in
>> the
>> over 1400 pixels wide mode by the makers worthless proprietary drivers.
>> An
>> 800x600 screen sucks the big #1 for this app.  Particularly when I know
>> this
>> card and either monitor are capable of much much better performance while
>> still running the vesa driver.
>
>You’ll probably have to edit xorg.conf
>You’ll need to put in the horiz and vert frequencies for the monitor you
>intend to use and add the resolution to the list of resolutions.
>I know this is a bit vague but, it’s awhile since I’ve done this.
>Hope this points you in the right direction, if not just a shout and Ill
>try to dig my old notes out.

Thanks Steve, I may have to do that at some point.  The older 17" may not 
protect itself and I don't know the minimum hscan speeds for it are but would 
assume > 30 khz.  Max of course is fuzzy, and determined by the monitors 
ability to crank up the voltage to the hscan circuit, when its over-ranged 
the pix gets dimmer & narrower, but normally it won't be damaged.

Occasionally this is written on a rear label, but that puppy is going to need 
a forklift to get it out of there and look.  I sort of built the cubbyhole 
around it.  Typical workshop for an old fart. :-)

What I was hoping for was an editable monitor database that wasn't internal 
to a gui.

Thanks again.

-- 
Cheers, Gene
"There are four boxes to be used in defense of liberty:
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-Ed Howdershelt (Author)

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