Boot to commandline and fix resolution

[skiflyer]

Ok, made a typical mistake and plugged my box into a new monitor while forgetting to lower the resolution. It's not beyond the range of the monitor.

Now, I know I can just switch monitors and change it blah blah... but I was hoping to take advantage of this situation and learn something... I can see the grub screen... and the text go by at bootup, then the login prompt (text) flashes for a second before the monitor goes out of range.

How to I boot to the command line, and then modify the resolution for the monitor? (It's on graphical login by default right now)

Redhat 8.0, Gnome desktop environment.

Thanks,
Rob

 

[danielhozac]

Add [tt]single[/tt] to your boot loaders kernel options. That would boot into maintainence mode, but from there you could easily issue [tt]init 3[/tt] to go into the default textual mode. //Daniel

 

[clonny2]

If you are already booted up do this:

CTRL-ALT-F2

This will bring you to a non-graphical login.

type redhat-config-xfree86.

This will re-setup X.

After it is setup, try pressing CTRL-ALT-F7

This should bring you back to your xsession. Now press CTRL-ALT-BACKSPACE.

See if that will work for you.

If not trying rebooting.

 

[skiflyer]

Well, that got me to the text prompt... a great start...

redhat-config-xfree86doesn't do much other than return me to an out of range screen.... and then on a second run, telling me it can't start the X-Server, trying with a fresh configuration, and then freezing.