A fresh install of Ubuntu was made on a quite old PC ( say - 10 years old ). A 1920x 1080 monitor is connected via RGB... BUT showing a single possible screen res - 1280X1024 ( which is not my/ screens preferable one).
Since it is an old PC- I don't have any solid knowledge regarding it hardware ( MSI mother board, internal graphics card, E2140 1.60GHz, code 2 duo ... and that's about it ), so looking for any display drivers, was not a great success.
My main question is- What is the best way to start this search ?
xrandr - showed only this 1 mode of resolution.
2) Is is a display driver issue ?
3) May be it is a Hardware issue ( since it is quite an old one...)
Edit 1: Perhaps Motherboard is https://www.msi.com/Motherboard/P4M900M2L/Specification
How can I get its drivers ? on manufacturer's site- it support windows only
Edit 2: Motherboard model is P4M890
Edit 3- Commandline output
$ lspci -nnk | grep -A3 VGA 01:00.0 VGA compatible controller : VIA Technologies, Inc. P4M890 [S3 UniChrome Pro] [1106:3343] (rev 01) Subsystem: Micro-Star International Co., Ltd. [MSI] P4M890 [S3 UniChrome Pro] [1462:7255] Kernel modules: viafb 04:01.0 Audio device : VIA Technologies, Inc. VT8237A/VT8251 HDA Controller [1106:3288] (rev 10) guy@desktop:~$ xrandr -d :0 xrandr: Failed to get size of gamma for output default Screen 0: minimum 1280 x 1024, current 1280 x 1024, maximum 1280 x 1024 default connected primary 1280x1024+0+0 0mm x 0mm 1280x1024 77.00* guy@desktop:~$