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My monitor stopped communicating its native resolution to the OS

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Monitor: Envision H193Wk, 19", 1440x900 native resolution
Graphics card: NVIDIA GeForce 210, 1GB RAM
OS: openSUSE 13.1 (x86_64), fully updated

I bought this Envision monitor at a second-hand store. The other day, I noticed that it reverted to 1280x1024, not just in openSUSE, but in all the various OSs I have installed (Windows, Kubuntu, Linux Mint, Debian, etc.) My assumption is that the monitor felt it was overworked and underpaid, and decided to stop communicating the fact that its native resolution is 1440x900 to the video card. In other words, it seems to need replacing, which is not exactly a shock, since it was purchased used. (Nice monitor, though.)

I found that I could use the "nvidia-settings" GUI applet to force the monitor to 1440x900, which worked in openSUSE, except that the fonts ended up looking atrocious (i.e. very fuzzy; quite the opposite of crisp, no matter the anti-aliasing setting). So I uninstalled all of the nvidia components and went back to using the nouveau driver, which works pretty well, albeit a bit more slowly. And the fonts look good and crisp again.

Does anyone have an idea of what happened to my monitor?

(A word for those who are still using GeForce 6xxx-series and GeForce 7xxx-series NVIDIA video cards: From personal experience, the nouveau driver won't work well with your card. Install the proprietary driver. And for those still using a GeForce 5xxx-series card, be advised that NVIDIA has discontinued updating that driver (the 173.x driver) for newer kernels and versions of X.org. The 173.x driver won't install on distros coming out with kernel 3.13.)

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