On 7 Jun 2002, Henri Muurimaa wrote:

>Date: 07 Jun 2002 12:07:44 +0300
>From: Henri Muurimaa <[EMAIL PROTECTED]>
>To: [EMAIL PROTECTED]
>Content-Type: text/plain
>List-Id: General X Discussion <xpert.XFree86.Org>
>Subject: Support for DVMT (dynamic video memory technology)?
>
>Hello,
>
>First of all, let me thank you for all your hard work on the everybody's
>favourite X-window system!
>
>To my question: what are my chances to have support for DVMT, as
>specified here: 
>http://support.intel.com/support/graphics/intel830m/tti004.htm in any
>near future?
>
>You see, I've acquired a HP Omnibook 510 with the i830 graphics chipset
>(which is supported by XFree 4.2.0, thank you!), but the stupid BIOS
>will allocate only 1M of legacy video memory for the card. Thus I can
>get at best only 1024x768x8bpp in X. Needless to say, the Windows driver
>supports DVMT, and I can get full 32-bit resolutions in XP.
>
>One way around this would be to select more video memory to be allocated
>in the BIOS setup. Unfortunately the BIOS does not support that, and HP
>seems to be unwilling to fix the problem, as "Linux is not supported" -
>which is stupid since I received the laptop from a HP event with only
>Linux pre-installed.
>
>Intel acknowledges the potential problem in here:
>http://support.intel.com/support/graphics/intel830m/tti013.htm but I've
>yet to receive an answer from them on who could and/or would fix the
>problem.
>
>Would you guys have any insights on the problem? Does the problem lie in
>a kernel module, or in XFree, ie. who's the party I should bug about
>this?

It is specifically a problem in the laptop's BIOS.  There are 
Dell laptops that suffer from this shortcoming as well.  So it 
isn't an XFree86 bug, but rather the lack of a certain "feature" 
that shouldn't need to exist in the first place if they made the 
laptop BIOS correct in the first place.  Thats how I understand 
it anyway.

If believe the XiG X server works around this issue, so it 
should be possible for someone familiar with the driver to add 
support as well given access to the necessary docs from Intel, 
etc.


-- 
Mike A. Harris                  Shipping/mailing address:
OS Systems Engineer             190 Pittsburgh Ave., Sault Ste. Marie,
XFree86 maintainer              Ontario, Canada, P6C 5B3
Red Hat Inc.
http://www.redhat.com           ftp://people.redhat.com/mharris

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