white stripe on a wider terminal in dual screen mode

[Aljaž Prusnik]

Hi there! 

I posted this on IRC but will do here as well until I know whether I
should file a bug or not.

In terminal mode (with KMS) and dual screen (left monitor: 1920x1200,
right monitor 1600x1200) I have a white stripe on the left monitor and
it looks like if it's a compensation for the missing 320 pixels of the
right monitor. The picture is here:
http://www.tikataka.com/files/dualscreen_low.JPG 

Is this a known issue? 

I'm on 2.6.33-rc6 with mesa/drm/radeon updated today, but it's been so
since I switched to KMS. The card is ATI RV730XT [Radeon HD 4670]
(ChipID = 0x9490) with a DVI (right monitor) and HDMI (left monitor)
output.

Aljaz