booting without VGA

booting without VGA

[Abraham vd Merwe]

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Hi!

I'm currently wokring on a embedded system for a camera device. It runs
linux and we use the M-Systems DiskOnChip driver (a seperate module
available from their site) for storage and as a boot device.

The problem is if we boot with a kernel WITH vga support enabled, it boots
fine. If we disable vga support it doesn't seem to boot. What makes it even
stranger is that if we boot with that same non-vga kernel using an IDE disk
as boot device it also boots fine.

Solving the problem is probably trivial, but I have no way of
debugging/finding out the problem since I can't see the error message or at
what point the kernel stops working.

Remember it doesn't get to the point where syslogd could start, so I can't
save the bootup messages to disk or anything.

Also if I enable vga support the error disappears, so I'm sitting with a
catch-22 situation.

Any ideas how I can found out/debug the cause of the problem?

PS: Could you please post answers to me personally, I'm not subscribed to
the mailinglist

-- 

Regards
 Abraham

<Stealth> How do I bind a computer to an NIS server?
<Joey> Use a rope?
	-- Seen on #Debian

___________________________________________________
 Abraham vd Merwe [ZR1BBQ] - Frogfoot Networks
 P.O. Box 3472, Matieland, Stellenbosch, 7602
 Cell: +27 82 565 4451 - Tel: +27 21 887 8703
 Http: http://www.frogfoot.net
 Email: abz@frogfoot.net


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Re: booting without VGA

[Mike Ricketts]

>  Any ideas how I can found out/debug the cause of the problem?
>  

Have you tried using a serial or printer console?

-- 
Mike Ricketts <mike@earth.li>
Checking email via the web, therefore sommats
broked.  Evil evil evil.





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Re: booting without VGA

[Alan Cox]

> I'm currently wokring on a embedded system for a camera device. It runs
> linux and we use the M-Systems DiskOnChip driver (a seperate module
> available from their site) for storage and as a boot device.

Please ask M-Systems to debug your problem. We don't have source code to their
driver so we cannot help you.

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Re: booting without VGA

[David Woodhouse]

abz@frogfoot.net said:
>  I'm currently wokring on a embedded system for a camera device. It
> runs linux and we use the M-Systems DiskOnChip driver (a seperate
> module available from their site) for storage and as a boot device.

> The problem is if we boot with a kernel WITH vga support enabled, it
> boots fine. If we disable vga support it doesn't seem to boot. What
> makes it even stranger is that if we boot with that same non-vga
> kernel using an IDE disk as boot device it also boots fine. 

You're using binary-only code. You shouldn't expect anyone on the l-k 
mailing list to give your problem a second thought.

Does it work if you use the GPL'd DiskOnChip driver which is in 
2.4.0-test12? You can also use it in 2.2 kernels.


--
dwmw2


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