[mrtg] Re: Fatal libpng error

[Shane Rigney]

Tried changing the option to GIF. Still no luck. It creates the GIF, but
is only 75 bytes and the same errors still occur.

I might have to try the recompiling option (being new to Linux I've
lived off RPMs so far!), or go back to the original version of MRTG
until I upgrade Red Hat.




Shane Rigney said:
> Somewhat new to Linux, this might be a simple question, but . . .
> I have just updated to the latest version of mrtg (2.9.25).
>
> I started to get errors with the generation of PNG files. The
following
> error was being generated:
>
>
>
> "Gd-png fatal libpng error
>
> Invalid filter type specified"


perhaps your gd package isn't compiled with png support? looking at
the source for libgd, it seems to have png support optional.

perhaps recompiling png will help. another option that works for me
in some cases is change the type from png to gif, sometimes that is
faster, though gif is generally a bad format to use(legal reasons
mostly)

curious why you upgraded? I am running MRTG 2.9.17 with 0 problems
on multiple systems.


nate





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