What is the proper syntax for setting the nvram backlight-level?
Question
I am trying to set my laptop's brightness level via nvram backlight-level=
however I keep receiving errors, no matter how I try and input it. These are my past results.
~ nvram backlight-level "%96%06"
backlight-level %1e%00
nvram: Error getting variable - '%96%06': (iokit/common) data was not found
~ nvram backlight-level %96%06
backlight-level %1e%00
nvram: Error getting variable - '%96%06': (iokit/common) data was not found
~ nvram backlight-level\ %96\%06
nvram: Error getting variable - 'backlight-level %96%06': (iokit/common) data was not found
~ nvram backlight-level = %96%06
backlight-level %1e%00
nvram: Error setting variable - '': (iokit/common) invalid argument
~ nvram backlight-level = <%96%06>
zsh: parse error near `\n'
~ nvram backlight-level=<%96%06>
zsh: parse error near `\n'
~ nvram backlight-level=<%96%06>
zsh: parse error near `\n'
~ nvram backlight-level %96%06
backlight-level %1e%00
nvram: Error getting variable - '%96%06': (iokit/common) data was not found
~ nvram backlight-level="%96%06"
nvram: Error setting variable - 'backlight-level': (iokit/common) general error
However, I tried this suggestion but I receive this error.
nvram backlight-level=%96%06
nvram: Error setting variable - 'backlight-level': (iokit/common) general error
What is the issue here, I just am looking for the proper syntax.
La solution
You need to use sudo
to write to the NVRAM (and it probably also won't hurt to prevent the shell from handling %
by quoting it)
sudo nvram backlight-level='%96%06'
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