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Re: Single user mode, view on HDMI output?

* On 2019 06 May 14:10 -0500, Karsten Merker wrote:
> On Mon, May 06, 2019 at 08:22:43AM -0500, Nate Bargmann wrote:
> > Hi all.
> > 
> > I have a Freedombox Pioneer HSK (Olimex A20-Linuxino-LIME2) that I want
> > to do some maintenance (move some system directory contents off the uSD
> > to a SATA drive).  When I issue 'telinit 1' the HDMI screen clears and I
> > am left with a blinking cursor in the upper left hand corner of the
> > display.  I presume that only the serial port is active as a display
> > output at this point?  If so, is there a way to make the HDMI port the
> > default active display port?
> Hello,

Hi Karsten. 

> I don't know what the U-Boot setup in the Freedombox images looks
> like, but if you see U-Boot starting on the HDMI screen, you
> could try to interrupt U-Boot's boot process by pressing any key
> on the keyboard, so that you get a U-Boot commandline prompt, and
> enter the the following two commands:
> setenv console "tty0"
> run bootcmd

Except that for some reason, it isn't seeing the keyboard at the uboot
timeout prompt.  I do recall that with my MICRO running the stock Debain
Stretch installation that it does respond to the keyboard at that point.

> Many U-Boot bootscripts (including the one installed by the
> Debian flash-kernel package for the LIME2) pass the U-Boot
> "console" variable to the kernel.  If that is the case for the
> Freedombox images, the aforementioned commands should make the
> console on the HDMI port the primary console for the current
> session.  If that works for you and you want to make it a
> permanent default, you can run the following commands at the
> U-Boot prompt:
> setenv console "tty0"
> saveenv

With another distribution I figured out how to manually recompile
/boot/boot.scr but I'm not sure where to make the change now so the
next kernel upgrade doesn't replace my changes.  That distribution did
not have a kernel upgrade mechanism, so I switched to Stretch.

- Nate


"The optimist proclaims that we live in the best of all
possible worlds.  The pessimist fears this is true."

Web: http://www.n0nb.us  GPG key: D55A8819  GitHub: N0NB

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