[lug] Screen res and modes

[John Starkey]

Nevermind. Sorry. Dumb question. It was 1152x864 and because of the res
order in XF86Config.


On Mon, 18 Dec 2000, John Starkey wrote:

> Thanks Bill, Chip, and Scott. I now have a working 1280x1024. I used
> XF86Setup to get there, I didn't duck when I tried it, and now I know the
> problem. Well the biggest one. (HorizSync).
> 
> Any idea why I can get 1280x1024 but not 1024x800?
> 
> Thanks again.
> 
> On Mon, 18 Dec 2000, Scott A. Herod wrote:
> 
> > I'm guessing that your horizontal sync range is set too low.
> > In /etc/X11/XF86Config you should have a line that looks
> > something like:
> > 
> >     HorizSync  
> > 30-97                                                           
> > 
> > The high number that you have set is probably on the order of
> > 37.  The lowest acceptable 1280x1024 standard modeline requires
> > the upper number to be at least 64.2.  If you've got a multi-sync
> > monitor that's not more than a few years old, you will probably
> > be ok setting you HorizSync high enough to get there.
> > 
> > One thing you can do if you are worried about over clocking the
> > monitor is turn X off.  ( Kill it, not just escape out to a
> > tty. )  And run "X -probeonly > /tmp/CONFIG_REPORT".  
> > In the tmp file you should see a report of what modelines X saw
> > and what horizontal sync is required for each.  Then you can go
> > tweak the HorizSync range to get the mode you want.
> > 
> > Scott
> > 
> > John Starkey wrote:
> > > 
> > > Hello again.
> > > 
> > > I've been thru the archives looking for an answer to this and I only found
> > > some old threads about setting screen res in general.
> > > 
> > > Last night on a fresh install I had everything working great except I
> > > couldn't get out of 1280x1024. So I tried to do a reinstall and
> > > specify 1024x768 as the default but that didn't work. Now I'm stuch
> > > with 800x600 and can't even get 1280x1024 back. My luck.
> > > 
> > > I've been all through the XF86Config trying multiple things but I keep
> > > getting "No valid modes found". I assume it's referring to the ModeLine
> > > statements in the monitor section. I'd prefer not to blow up the monitor
> > > so I'm hesitent to make any changes to the sync data.
> > > 
> > > Anyone know what I can do. I know 1280 worked, why can't it find a
> > > modeline for that atleast?
> > > 
> > > Thanks,
> > > 
> > > John
> > 
> > _______________________________________________
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> > 
> 
> 
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