Comment 20 for bug 294899

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Tormod Volden (tormodvolden) wrote : Re: No signal with Samsung SyncMaster 750s and ProSavage8

If you add "text" to the boot parameters (the kernel line, F6 in the CD boot menu), it will not start X. You can then log in on the console and install the driver like mentioned above. To start X an X session, type "startx".

I don't think the driver is trying out different modes, it's just the monitor trying to match the signal from the driver. In principle the X server will ask the monitor about which modes it accepts, and tell the driver to use the "best" mode (usually the highest resolution or the one the monitor designates as "preferred"). If we can get the modedebug Xorg.0.log, we can see the details of this communication.

But not being able to switch the console might indicate more issues than just a wrong mode. You see the usplash progress bar until X should start, right? Try also to remove the "splash" word in the boot parameters - sometimes usplash interferes with the console modes and corrupts the screen.