This also affects me. Currently running Xubuntu Precise.
Video card: VGA compatible controller: Advanced Micro Devices [AMD] nee ATI Juniper [Radeon HD 5700 Series]
Monitors: 2 Dell U2410s, both connected via DVI, both exhibit this symptom
Kernel: linux-image-3.2.0-26-generic 3.2.0-26.41
X driver: xserver-xorg-video-radeon 1:6.14.99~git20111219.aacbd629-0ubuntu2
This also affects me. Currently running Xubuntu Precise.
Video card: VGA compatible controller: Advanced Micro Devices [AMD] nee ATI Juniper [Radeon HD 5700 Series] 3.2.0-26- generic 3.2.0-26.41 xorg-video- radeon 1:6.14. 99~git20111219. aacbd629- 0ubuntu2
Monitors: 2 Dell U2410s, both connected via DVI, both exhibit this symptom
Kernel: linux-image-
X driver: xserver-