Re: [PLUG] xorg.conf modelines for Optiplex GX 260

On 10/8/07, JP Vossen < jp@jpsdomain.org> wrote:

OK, this thing is still driving me crazy!  I still owe Brent some
feedback from his last suggestions, but a lot has changed (yet a lot has
stayed the same) since then.

As previously noted, the major symptom of MythTV not working turned out
not to be a video problem at all, so that part is good.  The remaining
problems are:
1) Several pixels cut off at the top of the screen
2) The LCD's auto-adjust usually moves the picture 3-4" too far right

After many hours of fooling around and frustration, I think I may be
close.  I found reference to this tool and ran it:

$ gtf 1280 1024 60
   # 1280x1024 @ 60.00 Hz (GTF) hsync: 63.60 kHz; pclk: 108.88 MHz
   Modeline "1280x1024_60.00"  108.88  1280 1360 1496 1712  1024 1025
1028 1060  -HSync +Vsync

When I pasted that into xorg.conf, that's the closest thing yet to
working.  And about 25% of the time, the LCD auto-adjust work. :-/

So, I am now wildly guessing that maybe one of those numbers would fix
the cut off pixels.  Can anyone decode them, or point me at a readable
reference?  BTW I know nothing about the xorg.conf except some rote
things I've figured out by osmosis since fiddling with this.  I've
always been a CLI geek and never bothered much with the GUI.  But the
fact I can get it working right is driving me nuts.

Oh, I've also been looking at xvidtune, which in theory should let me do
just what I'm asking about above.  But thus far it makes no sense to me
because:
* It usually tells me that I have some different resolution than I think
I do, like 1280x960.  Yet when I actually try to set that in Ubuntu,
it's very different.  And sometimes it tells me I have the 1280x1024 I
want.  If it always said the same thing, I might conclude it's right and
I'm wrong.  But it's all over the place.
* More importantly, no matter what I do, adjustment-wise, it tells me I
have requested a mode-line that is not possible or not supported by my
hardware.

TIA,
JP
----------------------------|:::======|-------------------------------
JP Vossen, CISSP            |:::======|        jp{at}jpsdomain{dot}org
My Account, My Opinions     |=========|       http://www.jpsdomain.org/
----------------------------|=========|-------------------------------
Microsoft has single-handedly nullified Moore's Law.
Innate design flaws of Windows make a personal firewall, anti-virus
and anti-malware software mandatory. The resulting software arms race
has effectively flattened Moore's Law on hardware running Windows.
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