Member Avatar for gustavo5

I installed a Samsung LCD TV to my PC because my old monitor wasnt that good looking, but i cant manage to change the resolution from 800x 600.

In my old monitor i had at least 1 more resolution option. 1028 x 800 would what id like, so anyone knows how to do it?

more info:

Im running windows XP
My graphics card is an NVIDIA RIVA TNT2 Model64/ model 64 Pro
Pretty old but in my old monitor it ran 1028 x 800.

I also updated my drivers.
humm also when i go to properties> config, my monitor appears as Plug and Play.

Help really needed :(

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A concise, practical addendum tying the replies together and pointing at the next steps.

The Samsung LN20S51BP’s official documentation lists the TV’s “optimum” PC mode as 800×600 at 60 Hz, which explains why Windows/XP is offering that single choice for PC input. This is the specification the TV reports to the PC, so the behavior you see is expected unless the TV or GPU is told otherwise. ()

Monitors/TVs tell the graphics card which modes they support via EDID; if the TV’s EDID advertises an 800×600 preferred timing, the driver will present that mode and hide others. Changing the refresh to 60 Hz (the TV’s recommended vertical frequency for PC mode) is the first correct step. EDID can be overridden, but it’s device- and driver-dependent. (en.wikipedia.org)

Practical checklist to try (in order):

  1. Use the TV’s VGA/PC input and set the TV’s input type to “PC”/RGB and vertical frequency to 60 Hz via the TV OSD (PC Display section). ()
  2. In the NVIDIA control panel use Change Resolution → Customize → Create Custom Resolution to add/test a higher mode (NVIDIA will test and reject unsafe modes). Expect a possible black/blank test and automatic reversion if the TV refuses the mode. (nvidia.com)
  3. If that fails, either install a Samsung monitor INF (so Windows sees the TV with correct descriptors) or use an EDID-override tool such as CRU (Custom Resolution Utility) to add timings — both are advanced and require backups because they can produce no-display or unstable modes. (samsung.com)

Note: LCD TVs show best at their native pixel count; if the panel’s native PC mapping is 800×600, higher modes will be scaled and look soft. If a crisp 1024×768 (or wider) desktop is required, a display whose native resolution matches that mode is the most reliable solution. (en.wikipedia.org)

(References used: Samsung user manual, EDID overview, NVIDIA custom-resolution docs, CRU tool.)

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Member Avatar for Suspishio

Unless I'm mistaken, you'll either have a TV drivers disk or you can download one from the Samsung site. That will at least enable Properties to see your TV used as monitor.

Next, to get beyond 800x600 which drives at 75Hz vertical refresh rate, you need to set the refresh rate in Properties to 60Hz. Then the maximum resolution of your TV should be available.

Your graphics card won't be the issue (although you are limited to RGB rather than digital input to the TV).

Member Avatar for gustavo5

i looked throught the manuals and stuff and there were no TV driver disk, but i found something that may be the limitant, it says optimum resolution for my model is 800x600

model is LN20S51BP if it helps

Member Avatar for Suspishio

Like I said, you can download drivers from the Samsung web site.

You didn't say which manuakls you were looking at. But the Samsung LCD TV is capable of a wide variety of screen resolutions in PC connected mode.

I'm reasonably confident that you can get 1280 x 1024 at 75Hz vertical refresh. This is what you should set in Nividia Control Panel or Display properties. This mode is supported in your graphics card for sure.

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