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why is maximum resolution 640x480 with Nvidia?

rated 0 times [ 0] [ 0] / answers: 1 / hits: 3056 / 3 Years ago, thu, october 14, 2021, 8:59:51

My old computer is used by my mother now. I have installed Lubuntu 12.04 on it (on 2012.11.02), replacing the old, but perfectly working Lubuntu 11.04.
After installing 12.04, it was OK for a while, but after a time, I think, there were some software updates, and resolution fall back to 640x480.
I have tried many fixes.

open source nvidia driver (nouveau, nvidia-96, experimental 310)

previous version of nvidia driver...

edit xorg.conf (the best result was that I copied the existing xorg.conf from my desktop computer, and with it, there is a 1280x1024 resolution, which still not fits to this widescreen monitor)

But no success.

The VGA card is a FX5200, which is supported by Nvidia 173 driver... But if it is supported, why is maximum resolution 640x480 with it? (I noticed, too, that my monitor is also unknown by the system.)

Strange problem, too : the nvidia-settings is now reporting that the nvidia driver is too old, and he can't use it, even if there is the latest nvidia driver installed.

I can agree with the open source driver, this computer is not used for gaming, or such things. So I only want a resolution, fitting to the widescreen monitor (1280x768, 1280x720, or 1440x900).

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herriail

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answered 3 Years ago nsuainner · Accepted Answer

Don't forget that when you install nvidia-current (or updates) then the nvidia-settings program also gets installed. It's often necessary to run nvidia-settings, select the best resolution, then tell it to save the configuration (actually, it saves /etc/X11/xorg.conf).

If you still have problems look in the /etc/X11/xorg.conf and see if it's tried to set VertRefresh and HorizSync to rediculously low settings that only allow 640x480 resolutions to be selected. It's a bug that I've been coming across, from time to time, but it's hard to say what triggers it. If the screen is working OK apart from
the resolution then this is worth a look.

Edit:

Based on the data in your xorg.conf, it looks like you are trying to acheive 1440x900 at 60Hz. Running cvt with these parameters gives a modeline of

Modeline "1440x900_60.00"  106.50  1440 1528 1672 1904  900 903 909 934 -hsync +vsync

You should delete or comment out the metamodes (never found them useful) and instead substitute this mode line. Restart X and see if it gives you option to change to this resolution.