[ubuntu-za] Not Optimum Mode

[Wayne Abroue]

Hi

The Model of the machine would possibly help.

I would go for VGA = 814 this will force into 800^600 mode acceptable for
most monitors.
The other way is to install ssh with install, then connect and reconfigure
Grub from ssh.
Make it headless, change bios error halting without monitor attached.

Wayne A









On Mon, Nov 21, 2016 at 4:29 PM, Midrand Opensource <
midrandopensource at gmail.com> wrote:

> Hello Group,
>
> I have a very frustrating problem:
>
> I've recently acquired an old server, and am trying to install Ubuntu
> Server on it. It's a Intel Xenon CPU, 3.20 GHz 64bit, 4Gigs RAM and a
> 250Gig HDD. It has a CD, but no DVD, and, although it has 2 USB ports,
> there is no option in the BIOS to boot from USB. This limits my install
> options. I don't know about the video card... hence my problem.
>
> I have tried everything I can think of, but I get this "bouncing"
> screen-saver type error right after the "Intel Server Board" boot splash
> screen:
>
> "Not Optimum Mode: Recommended Mode: 1280x1024 60Hz"
>
> I can't (usually) get any further.
>
> I've tried the left SHIFT key, but I can't see the GRUB menu. Sometimes
> (randomly, as far as I can tell) the ESC key will let me into the command
> prompt (remember, I'm running Server so there's no GUI), but I can't figure
> out how or why (hence the apparent randomness). I've tried Ctrl+Shift+F1,
> but that didn't help.
>
> I can install it just fine; ie, I can see the install screens. I'd ideally
> like to use whatever video driver Ubuntu uses during the setup to run the
> system!
>
> I've tried nomodeset, which, although a great concept, doesn't seem to do
> anything. I got in to the system this morning (!) and changed
> /etc/default/grub so that GRUB_GFXMODE reads 1280x1024. (then sudo
> update-grub). This also didn't help. I've also changed the "VGA=" option
> after pressing F6 on the install screen to 791. That looked promising
> during the install, but when I rebooted, I still got the "Not Optimum Mode"
> error!
>
> I've tried installing Ubuntu Server 16.04, 14.04 and 12.04 (they all come
> in at under 700mb so they fit onto a CD). I get the same error with each.
>
> I've just tried Lubuntu 14.04 "Alternative" .iso (as it also fits onto a
> CD) and it doesn't work either!
>
> So, I'm stuck! Do any of you have any ideas???
>
> Many thanks,
>
> Mike Stroud
>
>
> --
> ubuntu-za mailing list
> ubuntu-za at lists.ubuntu.com
> https://lists.ubuntu.com/mailman/listinfo/ubuntu-za
>
>
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