Changing host "console" resolution?

[Andy Huang]

I use DRAC's remote console (vkvm) to manage my server, as it is thousands of KM away in a datacenter. Before installing Proxmox, the resolution of this was handled by X11's configuration on the OS. After installing Proxmox, it made the window too high for my monitor (macbook, 1280x800, but top menu bar won't go away so I miss a line or two at bottom), and the place I used to edit this doesn't seem to contain the files anymore. Where does Proxmox set the resolution for host console (host, not guest console from web panel)?

 

[tom]

see nano /etc/default/grub

and enable the console by uncommenting the following:

# Uncomment to disable graphical terminal (grub-pc only)
#GRUB_TERMINAL=console

after this, run.

update-grub

 

[Andy Huang]

Sorry, I must've referred to it incorrectly. I meant the terminal / console after grub menu, where kernel takes over and start spewing status messages before dropping you at the login prompt, and there after, on the host OS. The screen resolution up to grub menu is okay, after that the vkvm resizes itself to a much larger screen.

 

[tom]

yes, the mini howto explain what you need. try it.

 

[Andy Huang]

Sorry for the late reply... I tried it, and one of my VM decided to not come back after reboot (stuck after Loading initramfs goes away, and then "Loading, please wait..." message just blinks forever. Turns out I had to turn off ACPI support on it for some reason. Anyways, side adventure aside, it still changes the resolution after... Oh well, I suppose it is just a small nuisance I can deal with Thanks anyways!

 

[tom]

Sorry for the late reply... I tried it, and one of my VM decided to not come back after reboot

you asked about changes on the Proxmox VE host. so VM´s are not affected by the changes.

if you need to change the resolution inside the VM´s, you need to configure this INSIDE the VMs.

 

[Andy Huang]

I know; it was totally separate but more pressing issue, that's why I didn't come back to reply quickly

 

[bazzi]

after the /dev line the resolution will go up. It is very annoing, because in the datacenter there are some old lcd, that don't go that high. I have tried toms howto, but it still will scale the resolution up after the loading of /dev (I think...)

I have tried to set the GFX:
GRUB_GFXMODE=1024x768
GRUB_GFXPAYLOAD_LINUX=1024x768
and
GRUB_GFXPAYLOAD_LINUX=text
and
GRUB_GFXPAYLOAD_LINUX=keep

Als seems not to work... What can I try now, because currently I am out of options...

 

[bazzi]

Ok found the fix:

nano /etc/default/grub

and activate 640x480 by editing this:

GRUB_CMDLINE_LINUX_DEFAULT="quiet"

to:

GRUB_CMDLINE_LINUX_DEFAULT="quiet video=VGA-1:640x480"

after this, run.

update-grub

Maybe interresting to add it to the code (or in a wiki)? text mode is more for installation and maintanace so it doesn't require a large res, especially as it is datacenter solution. (And a lot of datacenters have a mix of old and new monitors, and it can be frustrating not to be able to connect to your server by a resolution mismatch for text mode...

 

[tom]

see my first answer to this thread (second post). why does this not work for you?

 

[bazzi]

see my first answer to this thread (second post). why does this not work for you?

Why I don't know. It just doesn't. I have tryed it on multiple machines, without any luck

 

[elbuit]

Hi.
I'm testing proxmox on a HP that has ILO.

When proxmox boot, changes to framebuffer mode and I can't access to textconsole from ILO.

To solve this I changed /etc/default/grub appending "vga=normal nomodeset" to GRUB_CMDLINE_LINUX_DEFAULT like this:

GRUB_CMDLINE_LINUX_DEFAULT="quiet vga=normal nomodeset"

And later:

update-grub

This solve my problem and proxmox boots in a 80x24 mode without framebuffer hight resolution.

 

[vcp_ai]

Hi.
To solve this I changed /etc/default/grub appending "vga=normal nomodeset" to GRUB_CMDLINE_LINUX_DEFAULT

Thanks it also solved my problem, and got Proxmox booting on 80x24 .

While starting grub, I got a message about "vga=normal" was deprecated, and suggested using gfxpayload=text

So my line now shows

GRUB_CMDLINE_LINUX_DEFAULT="quiet gfxpayload=text nomodeset"

And it works as expected.

Regards

 

[joulester]

Is this still the solution for this problem? It don't seem to work for me.

 

[InQuize]

GRUB_CMDLINE_LINUX_DEFAULT="quiet gfxpayload=text nomodeset"
GRUB_GFXMODE=1024x768
GRUB_GFXPAYLOAD_LINUX=keep

Do not forget to update-grub

To list available resolutions, in Grub console use vbeinfo for BIOS and videoinfo for EFI mode.

 

[dlasher]

GRUB_CMDLINE_LINUX_DEFAULT="quiet gfxpayload=text nomodeset"

And it works as expected.

worked perfectly for me, both 7.4 and 8.0 - thanks

EDIT: EXCEPT that it disables any GVT features on Intel iGPU's. Have to remove the nomodeset line to get it back.

 

[dlasher]

however, THIS works, and doesn't disable GVT/etc - append THIS to the end of your GRUB_CMDLINE_LINUX_DEFAULT

video=1024x768@60

(change appropriately for your output device)

also check out "dpkg-reconfigure console-setup" to change console font sizes.

 

[Kingneutron]

> also check out "dpkg-reconfigure console-setup" to change console font sizes.

If you want to change TTY console fonts temporarily / on the fly, you can enter the commands interactively or use a bash script.

cd /usr/share/consolefonts # for Debian -- could be different for other distros
ls # see what's available
setfont Lat15-Fixed13

 

[ogvirt]

Does anyone know how to configure the console for use with a vertical monitor? Rotating 90 or 180 degrees? Thanks!

Edit: I figured it out. fbcon=rotate:1 or fbcon=rotate:3 does it.

This is arguably ridiculous but I wanted to see if I could do it. I have my console displaying on a vertical screen with a very odd and mostly unusable resolution for GUI's (it scales far too small) and it's been sitting here unused for months. I very well may turn it off but it works!

 

[Kingneutron]

Does anyone know how to configure the console for use with a vertical monitor? Rotating 90 or 180 degrees? Thanks!

Edit: I figured it out. fbcon=rotate:1 or fbcon=rotate:3 does it.

This is arguably ridiculous but I wanted to see if I could do it. I have my console displaying on a vertical screen with a very odd and mostly unusable resolution for GUI's (it scales far too small) and it's been sitting here unused for months. I very well may turn it off but it works!

Nice tip! You can also play around with my ' setfont ' tip to change the font size OTF