[Xorg-driver-geode] Update -- The RandR-"unable to setrotation"issue in AMD Geode LX platform

[Martin-Éric Racine]

Hunk,

I'm wondering why rotation fails for Mitch with just 16MB of video memory then?

Martin-Éric

On Mon, Jun 28, 2010 at 6:17 AM, Cui, Hunk <Hunk.Cui at amd.com> wrote:
> Hi, Martin,
>        I want to clarify about setup the Graphic memory in BIOS, for OLPC XO-1 platform, XO-1 is set up to 14MB or 16MB (default).
>        I have been test the Rotate operation in 14MB, if the Graphic memory is large than 10MB, it can do the Rotate operation, so setup to 16MB or 14MB, it will normally working.
>        So the Graphic memory doesn't need to setup to 32MB.
>
> Thanks,
> Hunk Cui
>
> -----Original Message-----
> From: m.e.racine at gmail.com [mailto:m.e.racine at gmail.com] On Behalf Of Martin-éric Racine
> Sent: Monday, June 21, 2010 12:48 PM
> To: Mitch Davis
> Cc: Cui, Hunk; Mitch Davis; xorg-driver-geode at lists.x.org; Huang, FrankR; Xie, Michael
> Subject: Re: [Xorg-driver-geode] Update -- The RandR-"unable to setrotation"issue in AMD Geode LX platform
>
> On Mon, Jun 21, 2010 at 7:32 AM, Mitch Davis
> <mjd-xorg-driver-geode at afork.com> wrote:
>> On Mon, Jun 21, 2010 at 11:56 AM, Cui, Hunk <Hunk.Cui at amd.com> wrote:
>>>        You can check your Xorg.0.log file about "Gedoe LX video memory" and "LX video memory", because the shadow buffer (rotate memory) will be allocated from "FREE memory", if only 0x0 bytes are available, it can not do the rotate operation.
>>
>> Well, it's working now! :-)
>>
>> One thing that is really necessary is changing the video memory
>> setting in the BIOS:
>>
>>  Advanced Chipset Features -> Video Memory Size
>>
>> I found that if this is set to 8M or 16M, the rotate fails with the
>> out-of-memory log message.  If it's set to 32M, the rotate succeeds.
>
> I just added a FAQ about this in the driver's README.