How can i change the screen resolution under Linux?

hi i'm currently using linux which i got fro mandriva and i love it but i cant change the screen resolution. ill go to system...resolution...and try to change it but all i have is 640 by 480. can someone please tell me how to change itHow can i change the screen resolution under Linux?
You can also edit the X11 Config file. I'm not familiar with that distro, but it is usually called xorg.conf in never versions. It could be in /etc/xorg.conf or /etc/X11/xorg.conf.



Regardless, if you can't change the resolution beyond 640 x 480, there might be some video card compatibility issues. Do you have a new or highend video card? You might be able to fix this by downloading the linux driver from ATI or NVIDIA presuming you have one of their cards.How can i change the screen resolution under Linux?
ctrl alt - or + will cycle through the screen resolutions you have listed in your /etc/XF86Config file.

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