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Re: serial console install issues

On Sun, Apr 11, 2021 at 11:51:57AM +1200, Richard Hector wrote:
> Hi all,

Hi Mailinglist,

> I'm commenting here partly because I don't know which bit of software is at
> fault for each problem ...
> I have a PCEngines APU4, which has a serial port and no video hardware.
> I'm using a USB-serial adapter, with a null-modem cable.
> I'm using a Buster netinst USB stick - 10.1 I think - according to the cdrom
> lines in sources.list
> My first issue was that xfce4-terminal (by default) traps F10, which I
> needed for the Coreboot/Seabios boot menu, but I've since discovered that's
> an option in the preferences. I got around that initially by using xterm.
> My first try was with minicom. It connected ok, but it appeared the arrow
> keys weren't working, and the line drawing characters weren't displaying
> correctly either.
> When I discovered screen acts as a serial terminal, that behaved rather
> better (colour, and nice line drawing characters), but still problems with
> arrows.
> Then finally, I can't remember how, I discovered that it didn't like
> displaying on a 24-line terminal, which most of the terminals I tried
> default to.
> With a 25-line terminal, it all seems useable - and Minicom mostly displays
> it ok too (not quite right; the blue box isn't quite drawn properly, and
> seems too low on the screen?
> It then took me some time to realise that I needed to both add
> console=ttyS0,115200n8 at the end of the kernel line, and apparently remove
> the 'vga=xxx' part earlier in the line. I guess it's not possible for
> SysLinux to detect that?
> Anyway, as I say I'm not sure whether the issues are in the terminal
> emulation (either the xterm or comms program), or in the menu system (is
> that SysLinux?) or somewhere else, or whether the mismatch in number of
> lines inevitably causes problems.
> I hope this isn't to vague :-)

It is a clear story of a struggle that has been won   :-)

On how to prevent that more people solve a solved problem
was a websearch done


One of the first hits is


which has a section called 'Boot console'.  Rereading that section
again made we wonder what could be improved.

I'm asking Original Poster to elaborate what should be changed.

Geert Stappers
Silence is hard to parse

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