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Hi I've just installed Ubuntu 13.10 on a Lenovo w350 and am having some issues with graphics driver.

standard nouveau drivers work great on the laptop display but when I attach an external display it goes bad on the external monitor, seems it's not re-drawing properly. (Photo attached).

I've tried other drivers but none of them detect the external monitor when connected.

Any ideas?

00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor Graphics Controller (rev 09) 01:00.0 VGA compatible controller: NVIDIA Corporation GK107GLM [Quadro K1000M] (rev a1)

screenshot of effected monitor -- http://i.imgur.com/UZWMpQO.jpg

UPDATE 1: I have noticed that if I leave the System Monitor open the display improves. Wierd.

UPDATE 2: If I leave a video going the lag/flicker issues stop.

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I've been experiencing the very same issue and with the same behavior when a video is going, but only on my third monitor. Monitor #1 and #2 both redraw just fine. –  Patrick F Dec 6 '13 at 22:00
    
I have the same problem! Can't seem to find any solutions either. Using the proprietary Nvidia drivers isn't something I want to do either, since it overheats my laptop :( Have you found a permanent solution to this yet? –  carestad Jan 5 at 10:24
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Is this still reproducible? –  Braiam Feb 9 at 20:50
    
I am having the same problem with Ubuntu 14.04 and a Dell Precision M4800. Has anyone found a solution? –  iamnotmaynard Jun 25 at 18:38

1 Answer 1

I experienced exactly same behaviour on external monitor (connected through DVI or DisplayPort) when I booted Ubuntu 13.10 from USB stick.

I might have found workaround that solves redrawing problem.

My system: Lenovo T430 with 2 graphic cards (Integrated Intel and additional Nvidia).

Workaround: Go to the BIOS setup, in Graphics setup choose Discrete graphics. Redrawing problem occured only when there was Nvidia Optimus mode active.

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1  
Turning on "Discrete graphics" will overheat your machine. –  krlmlr Nov 20 '13 at 8:02
    
I have the same laptop and problem, but selecting Discrete Graphics simply prevents Ubuntu from starting (all I get is a black screen in graphics mode with blinking cursor) –  Alexander Kosenkov May 24 at 12:04

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