Re: NEC2080UX+ - "Supported Future Video Modes"

From: Zenaan Harkness (zen_at_freedbms.net)
Date: 06/09/04

  • Next message: Zenaan Harkness: "Re: dual boot with lilo" 
    To: debian-user@lists.debian.org
Date: Wed, 09 Jun 2004 15:30:16 +1000

    On Wed, 2004-06-09 at 11:56, Alvin Oga wrote:
    > > > than try 1280x1024
    > > > than try 1600x1200
    > > >
    > > > use only one resolution so you know the screen size is supposed to be
    > > > as you defined
    > > > xdpyinfo | grep dimension
    > >
    > > All the following tests are with Xinerama, so xdpyinfo returned twice a
    > > single screens width for each test resp..
    >
    > umm ....
    >
    > use one monitor... see what the maximum resolutions it'd support
    > - use one resolution at a time
    > 1024x768, than try 1280x1024, than try 1600x1200 etc

    Hmm ... they are both 'supposed' to support 1600x1200. That's why I
    got my previous work (may be nearly 3 years ago now) to get me this DELL
    laptop, since I can see rather well, even when running a nice small 9pt
    neep font or similar, at 1600 res, on this 15" laptop screen.

    "But you're not normal" my brother said to me once.

    Anyway, the point is, I need this for programming, and the laptop was
    just getting too crowded (I know, I know, I should be grateful for the
    original 1600x1200 screen right - well I am, but I need more OK :)

    So, no point having two screens with different resolutions - null
    regions and the like. And now that 20" LCDs are finally reaching
    1600x1200, I thought "perfect opportunity".

    So, thus my emails and attempts to get it to 1600.

    I know I can run it at 1200, but if I run both at 1200, I get only 2400
    total desktop width, as opposed to 3200 which I _should_ be able to get
    - which is 800 pixels narrower! Which almost defeats the purpose of
    getting a second monitor (you see, I want to have 6 xterms side by side
    - the most I can get right now is three (on one monitor) all running
    vim.

    Surely that's not too much to ask?

    > > 1280x1024 works for both screens.
    >
    > bingo ... if you want both sceens to be teh same size fonts, etc...
    > thats what you're stuck with

    The question is why can't XFree drive it at 1600?
     
    > ##
    > ## make sure that the kernel DRI drivers are set for both svga controllers
    > ##

    How to? Or doco link/ man page?

    Also, I have a single laptop driving all this - ie. it's an ATI Radeon
    Mobility 7500 from 2 to 3 years ago. So I'm running the external LCD on
    the laptops VGA port.

    > > 1600x1200 internal works, external not - but not shimmering, but looks
    > > like it's trying to render 1600 pixels at only 1280, and doing a
    > > particularly bad job of antialiasing or something: so it's almost
    > > impossible to read.
    >
    > if 1600x1200 only works on one but not the other, get a better monitor ??
    > - if its a external monitor, it's easy to upgrade

    The SONY works. The LCD should - it's brand new yesterday, 20.1",
    1600x1200 res - you don't get much better than that (except perhaps the
    IBM/Viewsonic 22" widescreen at 3840x2400 resolution - albeit at about
    $12,000 RRP Australian :),

    and the doco/ specs for this new external LCD says it should support
    1600x1200 at 60Hz. The question is how to drive it with XF86.

    > - if its the laptop lcd doesn't go fast enuff... it's a problem,
    > but luckily, that is not the case here

    Yes, I've been very grateful for my internal 1600 over the last few
    years :).

    > > Perhaps XF86 is somehow trying to display 1600 at higher-than-60Hz ??
    > > The LCD can only display 1600x1200 at 60Hz according to the manual,
    > > which is also its native and "optimal" resolution.
    >
    > which is good..

    So how do I get XFree, if it is attempting to over-drive, to pull back
    to 60Hz refresh?

    > > > - check the dpms too
    > >
    > > How do I check this?
    >
    > comment it out is all i as thinking ..

    Yeah, tried that. No effect at all. In fact DPMS and sync and refresh
    settings can all seem to be commented out to absolutely no effect
    (positive or negative).
     
    > > > wrong setting for old fashion crt tube might let out the nice blue
    > > > perfume, after which, it wont work anymore
    > >
    > > Good to know.
    >
    > nite-nite time 4 me
    > alvin

    Cheers - thanks for your help. It's been a while so you must
    definitely be asleep at this point. Perhaps someone else can
    chime in.

    Just as a refresher, these bits, as I posted previously, of my
    XFree logs, stand out rather strongly to me, suggesting there
    might be a way to get 1600x1200...:

    (II) RADEON(0): Supported Future Video Modes:
    (II) RADEON(0): #0: hsize: 640 vsize 480 refresh: 85 vid: 22833
    (II) RADEON(0): #1: hsize: 800 vsize 600 refresh: 85 vid: 22853
    (II) RADEON(0): #2: hsize: 1024 vsize 768 refresh: 85 vid: 22881
    (II) RADEON(0): #3: hsize: 1152 vsize 864 refresh: 75 vid: 20337
    (II) RADEON(0): #4: hsize: 1280 vsize 960 refresh: 75 vid: 20353
    (II) RADEON(0): #5: hsize: 1280 vsize 1024 refresh: 60 vid: 32897
    (II) RADEON(0): #6: hsize: 1280 vsize 1024 refresh: 85 vid: 39297
    (II) RADEON(0): #7: hsize: 1600 vsize 1200 refresh: 60 vid: 16553
    (II) RADEON(0): Supported additional Video Mode:
                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    (II) RADEON(0): clock: 162.0 MHz Image Size: 408 x 306 mm
    (II) RADEON(0): h_active: 1600 h_sync: 1664 h_sync_end 1856
    h_blank_end 2160 h_border: 0
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

    (II) RADEON(0): v_active: 1200 v_sync: 1201 v_sync_end 1204
    v_blanking: 1250 v_border: 0
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

    (II) RADEON(0): Ranges: V min: 48 V max: 87 Hz, H min: 30 H max: 96
    kHz, PixClock max 170 MHz
    (II) RADEON(0): Monitor name: LCD2080UX+
    (II) RADEON(0): Serial No: 44106076YB
    (II) RADEON(0): End of Monitor2 EDID data --------------------

    ------------------------------
    If anyone knows if its possible to turn the above numbers into
    something sensible that will get XFree86 to drive my LCD, that
    just might do the trick...

    tia
    zen 

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