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I have Ubuntu 12.04 on a Dell latitude E6410, I have a problem when using the VGA output I always have dual monitor and can't switch on the "mirror display" toggle under systems setting/displays. It's rather annoying when having to do presentation with a video projector. the option "mirror display" is in light grey and I can"t tick the box.

Thanks for those who might have an idea how to resolve this?

update: driver is: Intel® Ironlake Mobile x86/MMX/SSE2

card something like this ? description: VGA compatible controller product: Core Processor Integrated Graphics Controller vendor: Intel Corporation physical id: 2 bus info: pci@0000:00:02.0 version: 02 width: 64 bits clock: 33MHz

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can you edit your answer ;) – Nemo Peeters Nov 14 '12 at 5:46
Who are you asking to edit an answer? There isn't an answer here. – ObsessiveSSOℲ Nov 14 '12 at 13:32
Hi,Jorge castro asked me to specify the driver and video card, I was just hoping he (or someone else, maybe you) could then come up with a clever idea as to why I can't switch on the "mirror display" in my display control. Thanks for your time – Nemo Peeters Nov 16 '12 at 11:31
I really don't know much about Intel cards. I'll add a bounty to draw attention, though. Don't know how much it'll help/ – ObsessiveSSOℲ Nov 16 '12 at 12:19

1 Answer

up vote 1 down vote

It's possible (though i'd see it as rather improbable) that your displays have no unified resolution, as in, there is no resolution the system can set and display on both at once.

Usually, though, there are several "fallback" resolutions, such as 1024 x 768. While most displays are superior to this now, they will still work at this resoltuion if told to.

Check your options for each screen resolutions, and see if there are any matching.

It's possible setting it manually may help, although both of mine allowed me to tick the box and then automatically limited my resolution options (which is also stated below the checkbox).

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