Mailinglist Archive: radeonhd (255 mails)

[Alex Deucher <alexdeucher@xxxxxxxxx>]

On Tue, Nov 3, 2009 at 10:00 AM, Kunal Gangakhedkar
<kunal.gangakhedkar@xxxxxxxxx> wrote:
> Hi,
>
> Sorry for not using word-wrap - so that the logs don't look messed up.
>
> I recently bought an HP Pavilion dv6 series laptop which comes with Mobility 
> Radeon HD 4650 graphics chip with 1GB GDD3 VRAM.
> It seems to be common with the dv6 series laptops from HP.
>
> The basic radeonhd X driver with the mainline radeon GPU driver gives me 
> pretty nice X environment.
> However, there are two issues that I'd like to know more about:
>
> 1.
> the X.org logs show that the entire VRAM is not being used - instead only 
> 256M out of the 1G are being used.
>
> The msg from Xorg.log is:
> (II) RADEONHD(0): The detected amount of videoram exceeds the PCI BAR 
> aperture.
> (II) RADEONHD(0): Using only 262144kB of the total 1048576kB.
> (--) RADEONHD(0): VideoRAM: 262144 kByte
>
> I'm attaching gzipped Xorg.0.log with this mail.
> Even the lspci output (included below) says that the memory is 256M
> whereas ATi catalyst driver in pre-installed Windows Vista Home Premium shows 
> and uses full 1GB of VRAM.

256 MB is the max PCI aperture size.  that's the largest amount the
CPU can access.  The GPU, however, can access the entire amount.
Support for using the extended memory will come eventually with kms.

> 2.
> I tried to use KMS which is recently introduced - just for testing what it's 
> all about.
> The kernel logs have following lines when trying to enable KMS:
>
> Nov  2 00:52:42 plutonium kernel: [  499.645739] [drm] Module unloaded
> Nov  2 00:53:03 plutonium kernel: [  519.771264] [drm] radeon kernel 
> modesetting enabled.
> Nov  2 00:53:03 plutonium kernel: [  519.771264] radeon 0000:01:00.0: setting 
> latency timer to 64
> Nov  2 00:53:03 plutonium kernel: [  519.781298] [drm] radeon: Initializing 
> kernel modesetting.
> Nov  2 00:53:03 plutonium kernel: [  519.781298] [drm:radeon_driver_load_kms] 
> *ERROR* Failed to initialize radeon, disabling IOCTL
> Nov  2 00:53:03 plutonium kernel: [  519.781298] radeon: probe of 
> 0000:01:00.0 failed with error -22
> Nov  2 00:53:43 plutonium kernel: [  560.657546] [drm] Module unloaded

Make sure you have a new enough kernel.  You need 2.6.32 or Dave's
drm-next tree for r6xx/r7xx KMS support.  Also, radeonhd doesn't
support kms, you need to use radeon (xf86-video-ati) if you want to
try kms.

Alex
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