changing vga mode to serial console mode

JKnott

@jonathanlee said in changing vga mode to serial console mode:

just like old ~~db9~~ DE-9 console cables.

JonathanLee

@jknott do you remember the DB-25 on the back of that us robotics modem that was used for out of band? You needed an adapter to connect to it with the Cisco rollover blue cable.

stephenw10

@alirz said in changing vga mode to serial console mode:

I only see an option to set the baud rate for serial communications.

You would see that if it's a serial console only install. What are you running on? What image did you install from?

alirz

@stephenw10 I am running the serial console image. As I mentioned I did get the serial console working in securecrt app, not in putty. That being said I don’t see any option to turn serial console on/off under the admin access page.
Anyways, my issue is resolved even if the toggle is missing.

Another question though. Can a serial image install be set to use vga as primary output and vice versa? Is there a setting to control that. Let’s say I want to hook up a monitor and would like to use the vga output?

stephenw10

Yes, like I said on the serial only image there is no option to disable the serial console by default. Otherwise you could easily lock yourself out.

Try removing the file: /cf/conf/enableserial_force.
That should allow you see the console options.

JKnott

@jonathanlee said in changing vga mode to serial console mode:

do you remember the DB-25 on the back of that us robotics modem that was used for out of band?

Yep, I have both a USR Courier modem and blue Cisco cable here. However, that DB-25 wasn't used for out of band, it was used for the data. Initially personal computers used DB-25 connectors, but switched to the DE-9 with the IBM AT.

BTW, my IMSAI 8080 had a bunch of holes punched in the back panel, for DB-25 connectors. I used 3 of 'em. Back in those days, I was also working with modems at customer sites.

JKnott

@alirz said in changing vga mode to serial console mode:

Can a serial image install be set to use vga as primary output and vice versa?

Yep. That's what I have here. My pfSense box is connected to both my USB/HDMI KVM switch and can also connect via serial cable. It's been a couple of years since I set it up, so I don't recall the details, but the serial port definitely works. I had to use a gender bender cable to connect the computers, as they both have male connectors.

alirz

@jknott well in my case, I have serial image version of pfsense installed. I notice that on the vga output, the display stops updating at some point of the boot process, however I get the full output in the serial console till the boot is finished. Is that normal? That's why I was wondering if I could flip between serial vs vga as primary output modes?

alirz

@stephenw10 said in changing vga mode to serial console mode:

Yes, like I said on the serial only image there is no option to disable the serial console by default. Otherwise you could easily lock yourself out.

Try removing the file: /cf/conf/enableserial_force.
That should allow you see the console options.

Cool thanks will check that out. Is it also possible to force vga as primary mode via a similar method for a serial.inage?

stephenw10

That is normal if serial is set as the primary console.

No there is no force file for vga.

JKnott

@alirz said in changing vga mode to serial console mode:

Is that normal?

I've never seen that.

You mentioned it locks up in VGA. That might be a hardware issue.

JonathanLee

@jknott The earliest computer I had was an At&t PC6300 it had a DB-9 for the keyboard, monochrome guy. I also remember my Tandy 102 my uncle got us one christmas had a DB25 on the back. My Dad had a Commodore 64 I never got to play with it. The thing was disconnected by the time I was able to. Again, the monitor was dead that went with it and it was outdated at that point but that guy had some connections on the back also. Today I have the C64 mini so I got to play with it in the end, Thank you Santa!!!