[syslinux] garbage on serial console after pxelinux.0 is loaded

H. Peter Anvin hpa at zytor.com
Wed Apr 4 11:54:10 PDT 2018

On 03/05/18 12:17, Scheie, Peter M via Syslinux wrote:
> A little more info:
> I was mistaken in saying that the garbage on the screen doesn't interfere with typed commands/stanzas; it does.  If I can type the name of a stanza and hit enter quickly enough before the garbage is spat to the screen, it seems to start loading a kernel, but then it aborts.
> And the garbage appears to be varying quantities of '[0n', as in sometimes there will be one instance of that in the string spit out, and sometimes there will be a dozen, or any quantity in between.  Sometimes it's all just blank spaces; and sometimes, as mentioned, there are fragments of text that was previously displayed.
> Any ideas as to what [0n is?  Some sort of screen formatting?

Yes, that's an attribute code <ESC>[0m.  Most likely you have BIOS
serial redirection *and* Syslinux serial port enabled at the same time.


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