Bug 6302

Summary:	radeon driver doesn't detect 256MB graphic memory in Radeon9700
Product:	DRI	Reporter:	CIJOML CIJOMLovic CIJOMLov <cijoml>
Component:	General	Assignee:	Default DRI bug account <dri-devel>
Status:	RESOLVED FIXED	QA Contact:
Severity:	normal
Priority:	low
Version:	unspecified
Hardware:	x86 (IA32)
OS:	Linux (All)
Whiteboard:
i915 platform:		i915 features:

Description CIJOML CIJOMLovic CIJOMLov 2006-03-17 23:23:07 UTC

Hello,

My laptop has ATI Radeon9700 with 256MB graphic memory, but radeon driver 
detects only 128MB. Also official linux ATI driver fglx detects only 128MB, 
but Windows XP drivers detects those 256MB.

Please fix it to have in linux 256MB available through radeon driver.

Thanks a lot

Michal

Comment 1 Roland Scheidegger 2006-03-18 00:08:36 UTC

You could try with latest radeon ddx & drm cvs, some issues with setting up the
memory map are fixed since very recently. Or install a driver snapshot instead
of using cvs. Though I think some mobility parts may have one memory channel
deactivated completely, in which case it wouldn't help (I believe mobility 9700
always have a 128bit memory interface, if you see it detected as 64bit with
latest driver then that is probably the case).

Comment 2 CIJOML CIJOMLovic CIJOMLov 2006-03-18 01:23:17 UTC

I use X.org 6.9 from Debian testing. So are there any newer debian packages with
this? I would like test it...

Comment 3 Alex Deucher 2006-03-18 03:39:12 UTC

Fixed in cvs or on the ati-1.0-branch.  Due to the way the apertures are set up
and some chip bugs, memory beyond 128 MB is not always CPU accessible. 
Eventually we can work around those cases by using the extended memory for GPU
only things like textures.  The driver has always been able to detect the full
amount of vram, we just used to clip it at 128 MB.  this is the behavior you are
seeing.

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