Problem with display and xorg on 17inch Widescreen KISS TFT Monitor

[Alex Deucher]

On 7/1/05, Stephen <azrael at azrael-uk.f2s.com> wrote:
> Hi all,
> 
> Either no-one could help with this problem, or I some how missed any
> answers. Did I give insufficient information? What other information
> would be useful? Am I posting to the wrong place? Can anyone suggest
> where I should be posting this sort of problem/query?
> 

maybe post a bug on https://bugs.freedesktop.org
Have you tried a 1280x768 modeline?

Alex

> many thanks
> 
> Stephen wrote:
> > Hi all,
> >
> > I'm having a problem, and I hope this is the correct list to seek help
> > upon. I have already consulted the mandrake/mandriva (the distro I use)
> > lists, and have been unable to resolve my problem. If another list would
> > be better suited to help me, I'd appreciate being informed as to which
> > it would be, and offer apologies for taking time here.
> >
> > I'm certainly not an expert on these things, so I will do my best to
> > describe the problem, but please do quiz me for answers that you think
> > are relevant to the issue, if I don't give an initially helpful
> > description of the problem.
> >
> > Without further ado, here we go:
> >
> > I have a 17inch widescreen TFT monitor made by Kiss Technology.
> > Their website is being overhauled atm but I found direct links to the
> > monitor info and brochure page: http://www.kiss-technology.com/?p=coolview3
> >
> > I have a creative GeForce2 GTS (nvidia) graphics card.
> >
> > I used to use Mandrake 10.0 (default with xfree86), it took me a short
> > amount of time to get the 17inch widescreen working right, but I did
> > without experiencing this problem.
> > I updated to Mandrake 10.1 packages which saw the default X becoming
> > xorg - and at once I started experiencing a problem with the display.
> > After upgrading to 10.2/2005LE I have the same problems.
> > Thus I believe that xorg is the root of the issue.. with the mandriva
> > tools not setting it up correctly (I intend no slight towards xorg!
> > don't hurt me!!).
> >
> > The problem: the colour of the display is darker, with horizontal bands
> > from 'bleed' of colour, i.e. the relatively darker colour of the
> > titlebar of a window will spread outwards left and right from the window
> > to fill the screen.
> >
> > I thought it was some modeline problem, and so copied the modelines from
> > my working XF86Config-4 file into xorg.conf, but this didn't help.
> >
> > Advice on the mandriva mailing list was to run monitor-edid and use the
> > modeline from that. This did not help. monitor-edid output is:
> >
> > Name: DCM0170
> > EISA ID: DCM0170
> > Screen size: 31.0 cm x 23.0 cm (15.20 inches, aspect ratio 4/3 = 1.35)
> > Gamma: 2.07
> > Analog signal
> > Max video bandwidth: 130 MHz
> >
> >   HorizSync 30-80
> >   VertRefresh 55-75
> >
> >   # Monitor preferred modeline (75.0 Hz vsync, 80.0 kHz hsync, ratio 5/4)
> >   ModeLine "1280x1024" 135 1280 1296 1440 1688 1024 1025 1028 1066
> > -hsync -vsync
> >
> >
> > This does pose an immediate question. Why is it suggesting 1280x1024
> > when it is a widescreen monitor, surely it should be suggesting 1280x768
> > (even Kiss website lists that as the max resolution)?
> >
> > If it is indeed the modeline that is my problem, can anyone suggest
> > anything to help me?
> >
> > If it isn't a modeline issue, can anyone think of anything else?