dual head intel graphics card problems (laptop + docking station)

Natxo Asenjo natxo.asenjo at gmail.com
Mon Jun 28 13:14:06 UTC 2010


hi again,

since I upgraded to f13 getting to start my laptop at work in a
docking station is really painful.

Setup: dell latitude e6500 with fedora amd64. At work, docking station
with 2 20´' monitors. With Fedora 12, this worked flawlessly. Plug
laptop in dockinstation, turn on with lid down, set it up once, work
since then with the 2 external monitors when I am at the office, just
the laptop monitor when not there.

Now it takes me between 10 minutes to half an hour to get my dual head
working every morning. It's getting on my nerves, to be honest ;)

What happens is either:

1) I plug laptop on docking station, turn it on and when the gdm
screen should appear I just see 1/4 of left screen, the rest is not
available (black). I can go to a VT, go to runlevel 3, back to 5 and
see if it works. Rinse and repeat until it does;

2) turn it on outside the docking station, login, plug it in the
dockin station, pray that it detects the monitors. If it does not,
then it effectively hangs, I cannot change to a VT, I have to power
cycle it. Rinse and repeat until it works.

My question is: until fedora 13, the standard behaviour was not to
mirror the monitors. How can I have this behaviour now? What extra
info can I supply you with?


lspci -v:

00:02.0 VGA compatible controller: Intel Corporation Mobile 4 Series
Chipset Integrated Graphics Controller (rev 07) (prog-if 00 [VGA
controller])
	Subsystem: Dell Device 024f
	Flags: bus master, fast devsel, latency 0, IRQ 31
	Memory at f6c00000 (64-bit, non-prefetchable) [size=4M]
	Memory at e0000000 (64-bit, prefetchable) [size=256M]
	I/O ports at ef98 [size=8]
	Expansion ROM at <unassigned> [disabled]
	Capabilities: <access denied>
	Kernel driver in use: i915
	Kernel modules: i915

00:02.1 Display controller: Intel Corporation Mobile 4 Series Chipset
Integrated Graphics Controller (rev 07)
	Subsystem: Dell Device 024f
	Flags: bus master, fast devsel, latency 0
	Memory at f6b00000 (64-bit, non-prefetchable) [size=1M]
	Capabilities: <access denied>


-- 
Groeten,
J.Asenjo


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