Comment 177 for bug 256142

same problem on an intel macbook with 945GM/GMS.

(II) intel(0): I2C device "SDVOB DDC Bus:ddc2" registered at address 0xA0.
(II) intel(0): I2C device "SDVOB DDC Bus:ddc2" removed.
(II) intel(0): xf86BindGARTMemory: bind key 2 at 0x087a8000 (pgoffset 34728)
(II) intel(0): xf86UnbindGARTMemory: unbind key 2
(EE) intel(0): underrun on pipe B!

Errors occurs using xrandr with 2 screens. The flickering only occurs on the laptop screen.

If I open a video application the hole screen turn shortly black with the first 2 lines of the log.

the last line comes during the flickering of the laptop screen. It happens sometime without a reason but mostly if the screen changes its brightness.

(intreped actual patch level, gnome desktop)