Why does Motorola Atrix load mdpi-drawables?

I created an AVD.

resolution: 540 x 960 hw.lcd.density: 275

Before starting the AVD I scaled the emulator to 4". So the AVD is similiar to the Atrix.

But why does it load mdpi drawable? I put a Bitmap in these folders:

drawble-ldpi drawble-mdpi drawble-hdpi

The Bitmap contains only a small Text, which says "ldpi", "mdpi", or "hd开发者_开发百科pi".

My manifest contains:

<supports-screens android:resizeable="true" />
<supports-screens android:smallScreens="true" />
<supports-screens android:normalScreens="true" />
<supports-screens android:largeScreens="true" />
<supports-screens android:xlargeScreens="true" />
<supports-screens android:anyDensity="true" />

Thanks in advance!

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Seems someone else had a similar issue, but managed to resolve it:

Android Eclipse emulator problem: Runs WVGA(hdpi) as a mdpi screen