I can not edit system file whith root acess

[AC Question]

I have flashed a compatible rom to my tablet that works perfect but is wrong resolution.I thing i have to edit axis in sys/class/display/axis. I have root acess .The permissions of axis are rw-rw-r and owner is media and group is system.I will apreciate any answer.Thanx a lot!

 

[Rukbat]

If the file is writable, it should be rw-rw-rw- See if chmod will fix that.