Misreported VRAM

[Ancoron Luciferis]

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Alex Deucher wrote:
> On Tue, Dec 8, 2009 at 6:07 PM, Ancoron Luciferis <ancoron at chaoslayer.de> wrote:
>> Jerome Glisse wrote:
>>> On Mon, Dec 07, 2009 at 06:54:13PM +0000, Mike Lothian wrote:
>>>> I have a Radeon 4650 (RV730) :
>>>>
>>>>  01:00.0 VGA compatible controller [0300]: ATI Technologies Inc RV730
>>>> PRO [Radeon HD 4650] [1002:9498]
>>>>
>>>> This should have 1GB DDR2 VRAM on board however my dmesg states differently
>>> So far we don't use VRAM beyond PCI aperture which is 256M on your
>>> system. I am planing on adding support for unvisible ram this week.
>>>
>>> Note that i don't think we have a driver which can take advantage
>>> of such amount of VRAM yet, except if you are driving 2 30" screen.
>> ^^
>> And that is exactly what I'm planning for my X1950XTX (the first one
>> with 2x Dual-Link-DVI).
>>
>> And with the newer HD5000 series AMD is going for triple ones, just like
>> Matrox did already years ago.
>>
>> As another question in this area, I always see this message on startup
>> in my Xorg.0.log:
>>
>> (II) RADEON(0): Cannot get VRAM scratch space. Allocating in main memory
>> instead
>>
>> As it is an INFO I assume this is not critical and all things work but I
>> always asked myself if this may cause any performance loss?
> 
> This is only used for some tables for atom-based modesetting.  It in
> no way affects performance.
> 
> Alex
> 

Thanx for the info.

Ancoron
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