chmod not changing permission

[Ashley Benton]

Hi,

I'm trying to change my xorg.conf file because my video card died and I have
no Guy anymore. It appears that I cannot start the computer except if I am a
root user, may be something else is messed up too, I'm not sure at that
point. I tried to replace xorg.conf by xorg.conf.failsafe but it doesn't
matter if I sudo or not, the file is not changing. I tried to allow write
but when I check the permission doesn't change. Any idea how I could
overwrite this file?
Thanks,

Meg
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