Subject: Re: [followup] G3/450 at Co-Lo
From: Timothy A. Seufert (tas@mindspring.com)
Date: Wed Feb 13 2002 - 14:32:47 MST
At 10:32 AM -0800 2/13/02, Mark Jaffe wrote:
>My new server (with YDL 2.1) is now set up in the Co-Lo facility and
>connected to the VGA monitor in the rack. Initial video (boot prompts)
(video mode set by Open Firmware)
>is flawless, but as soon as the system starts loading,
(video mode set by a fb driver in the Linux kernel)
>the screen switches
>to an almost unreadable condition with multiple images. If I cross my eyes
>and squint real hard, I can sort of make out what is there based on what
>I expect should be. I suspect I can issue a 'man fbset' command but I would
>not be able to read the output. Can someone help with this? TIA!
This is probably a B&W G3, so I'm assuming you are using yaboot.
Edit /etc/yaboot.conf and add "novideo" to the list of options for
the image you will be booting. For example:
image = /boot/vmlinux
label = linux
novideo
This will force the kernel to use the frame buffer just as OF set it
up, without attempting to do any further changes to the video card's
config. You won't get any acceleration or the ability to change
modes in the console, but that shouldn't be important since this is a
co-lo machine.
If you need to do this at the co-lo with the monitor in question, you
can supply the relevant option to the kernel manually from the yaboot
prompt. Instead of letting yaboot time out and automatically load
the default image, type:
linux video=ofonly
(assuming you want to boot the yaboot image with label "linux")
(the "video=ofonly" argument is actually what yaboot does if you
supply the novideo argument in the config file, so the two are
exactly equivalent)
-- Tim Seufert
This archive was generated by hypermail 2a24 : Wed Feb 13 2002 - 14:48:32 MST