How can I get 1920x1080 resolution for 23" Flat Panel,W7 VM?

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How can I get 1920x1080 resolution for 23" Flat Panel,W7 VM?

Postby jacjoe » 24. May 2012, 04:59

Hello.
I have now an AOC 23" Flat Panel monitor with a resolution of 1920x1080 and a video card GEForce GTX 570. The Host works with 1920x1080.

I installed the monitor driver in my guest Windows 7 Virtual Machine. Windows 7 recognizes the AOC monitor, then I installed Guest Additions (4.1.14) but in Control Panel-Screen-Screen resolution, the maximum resolution available is 1278x1024, the resolution I need is not shown (1920x1080).

In same screen, under Advanced configuration, I have in Adapter: VirtualBox Graphics Adapter.
No matter if I use resize the guest windows or use the seamless mode, I am always limited to 1278x1024 in the control panel of the Win 7 guest VM, it do not show bigger resolutions.

Does someone knows how can I get the 1920x1080 resolution? With 1278x1024 it do not look good.

Best regards
joejac
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Re: How can I get 1920x1080 resolution for 23" Flat Panel,W7

Postby mpack » 24. May 2012, 11:47

jacjoe wrote:I installed the monitor driver in my guest Windows 7 Virtual Machine. Windows 7 recognizes the AOC monitor

You installed a physical driver into a virtual machine? Why would you do that? Luckily for you the Win7 guest probably ignored you anyway - you can't load drivers for hardware that doesn't exist.

Have you tried dragging the VM window to the size you want?
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Re: How can I get 1920x1080 resolution for 23" Flat Panel,W7

Postby jacjoe » 30. May 2012, 21:59

Hello,
Thanks mpack,

I did almost everything, I have Seamless mode and the VM fills the full 23" monitor screen, but it do not looks good since it is at 1278x1024 resolution not at full resolution. It looks like if it were in Scale Mode, the sizes of the elements in the screen looks stretched, not nice.

And the Linux host is at 1920x1080. And when I boot from the other disk, in Win 7, it looks very nice at full resolution 1920x1080. And the sizes of the elements in the screen looks natural, not stretched.

Please note I have a Dual boot, Win 7 in HD and Linux as a Host in an Intel SSD with the VMs inside the Linux host.

I would appreciate a lot any help to resolve this problem.
Thanks and regards
joejac
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Re: How can I get 1920x1080 resolution for 23" Flat Panel,W7

Postby mpack » 31. May 2012, 11:41

If you have the guest additions installed as you say, then maximizing the window should make it go full screen, and the GAs should adjust automatically. Or you can drag the window to whatever size you prefer - and do it again if the size still isn't right. I have to admit that I don't really see what your problem is.

ps. if you really think you might have scale mode enabled, then <host>+C should toggle it. However to me it sounds like you don't really have the GAs installed properly. Did you follow the Linux GA installation instructions given in the manual?
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Re: How can I get 1920x1080 resolution for 23" Flat Panel,W7

Postby MSquare » 18. Feb 2013, 19:39

After installing GA, enabling 3D acceleration unlocked all the resolutions for me.

3D acceleration can be enabled for a guest machine in the Settings->Display options.

Cheers,
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Re: How can I get 1920x1080 resolution for 23" Flat Panel,W7

Postby mpack » 18. Feb 2013, 19:50

3D acceleration has nothing to do with display size, AFAIK. Also, enabling 3D after installing the GAs would not AFAIK do anything either.
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Re: How can I get 1920x1080 resolution for 23" Flat Panel,W7

Postby Gabriele_1981 » 29. Jun 2013, 19:27

I indeed have the same issue.

I have installed Virtualbox in Ubuntu 12.04, and I created a virtual guest with Windows 7 64bit. Guest additions were also installed. It works fine, but I can't set the resolution to anything higher than 1600 x 1200, whereas my screen is 1920x1080.

Here's my system specifications: Intel(R) Core(TM) i7-3632QM CPU @ 2.20GHz AMD Radeon 7650 VGA 8 Gb RAM DDR3

Moreover, if I try to enhable 3D acceleration in the settings of my guest, when I expand to full screen it aborts...
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Re: How can I get 1920x1080 resolution for 23" Flat Panel,W7

Postby Perryg » 29. Jun 2013, 20:01

You need to use the full screen toggle (host+F) to go into full screen. Anything else will not give the full resolution.
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