sudo gedit - shows blank document

[4now]

If I open the file apci-support
I'm not able to save changes because I do not have privileges

but if I use the command:

sudo gedit /etc/default/apci-support

the editor opens - showing only a blank page

[zenwalker]

try to open with the extensions of the file. Also just sudo cat /etc/default/acpi-support cmd to see its contents on cmd line.

Plus see the spelling of the file u have mentioned here.

[4now]

it was my spelling

Thanks