X Windows Performance with DOC 2000

[David Cooper]

Hello,

I have tried more and found out more.

(1) M-Systems Firmware

Strange, but true. If I use M-System's DOS-based dformat utility to load
firware version 4.2 into the DOC 2000 this prevents X from runnning from the
IDE drive.  This is true even if I boot with a kernel that has no support
for the DOC 2000.  As long as the DOC is sitting in my system (with Rev 4.2
firmware) X will not run.  I should point out that X does not cause the
system to hang in this case.

(2) nftl_format

So I bit the bullet and tried to remove all firmware (M-Systems dformat
/empty) and then do a complete low-level format with the MTD nftl_format
utility.  Then I put on top of that a ext2 root filesystem (not self
bootable of course).  This provided no improvement.  X still falls over at
the same spot.

(3) X Modules

I then was able to look at the X log file (/var/log/XFree86.0.log) and it
seemed that the point at which X fell over was when it was trying to load
the ddc module (libddc.a).  So I then mounted the entire
/usr/X11R6/lib/modules directory from the IDE drive and ran the rest from
the root filesystem on the DOC.  This allows X to get a little further
(seems to try to load a screen from the VESA BIOS).  But it still hangs,
this time after putting rubbish graphics on the screen (as in a normal
initialisation).

Question:  Why does X have trouble loading the libddc.a module from the DOC?

Thanks for you advice and suggestions thus far.

Cheers,

David Cooper


-----Original Message-----
From: linux-mtd-admin at lists.infradead.org
[mailto:linux-mtd-admin at lists.infradead.org]On Behalf Of Ilguiz Latypov
Sent: Tuesday, June 18, 2002 10:12 AM
To: David Cooper
Cc: Linux MTD
Subject: RE: X Windows Performance with DOC 2000



David,

Perhaps, running xinit command under gdb can help.  To go step-by-step
through the lines of code, a debug version of xinit would be more helpful.
I believe the gcc -g option will provide necessary debug information in
the produced executable binary.

Ilguiz

On Mon, 17 Jun 2002, David Cooper wrote:

> I tried this but, of course, the screen goes blank, system hangs and I
> can never look at the xinit.log file.


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