[Intel-gfx] [REGRESSION] GM45 has problems with docking station using newer kernels

[Pedro Ribeiro]

Hi,

I have a Lenovo T400 with a GM45 and I'm having some problems with my
mini-dock (Lenovo docking station with VGA and DVI outputs).

There are two issues affecting me with 2.6.35:

- when I press the safe release button on the dock, the kernel
correctly reports the dock unloading
[57867.078921] ACPI: \_SB_.GDCK - undocking
[57867.224246] usb 1-5: USB disconnect, address 5
however, as soon as I do that, xrandr fires up the external monitor
(connected through DVI in the dock) in auto mode, even if I had it
turned off. Pulling the computer out of the dock does not restore Xorg
correctly to auto mode on the internal LVDS as it used to do.

- Sometimes while resuming from hibernate, the mouse cursor appears
against a completely black screen. Changing to VT and back restores
the display correctly. This only happens if I resume from hibernate on
the mini dock. It appears to be random and happen about 20% of the
time.

I'm pretty sure this issues were non-existent with 2.6.33, but not
sure about 2.6.34.

I can investigate further if you would like me to. Does anyone have an
idea what can be wrong?

Thanks,
Pedro