Problems with 4K UHD and HyperV VM

As part of my new ‘kachirho’ company setup, I’ve purchased a new laptop – DELL XPS15 9550…    It’s a beast with new SkyLake i7 6700 processor – and 16GB RAM – and 512 SSD – see here for a YouTube review.   And it looks super-sexy with carbon finish…

It’s got the new (almost 4K) UHD resolution – 3840×2160 – and touch screen.   The visuals on this resolution are amazing – BUT – the clincher is that you need to ‘up’ the font size scaling.

By default, it was set to 200% – if setting to 100% – it’s hard to read !

The next dilemma – and discussion with a colleague – was the scenario for a HYPER-V VM.    I have one for some local development and working with K2.

Yes, I could use an Azure VM – but I have a local VM – so there…

While I can run a VM at decent speed, and with 10GB RAM, it’s not something that I can run on ‘multiple monitors’.  

The next consideration, was to drop my screen resolution to 1920×1080 – to match the second external monitor.    This WORKED – to a degree.

The VM would now pick up the base screen resolution (3840×1920) – within the VM – regardless of the desktop resolution I’d just changed to.

It turns out that HyperV must grab the base screen resolution – at BOOT time.

So – the answer was :

  • Change down from scale at 200% to 100% (I use 175% a lot of the time)
  • Drop the laptop screen resolution to 1920×1080
  • Reboot
  • Start up the VM
  • Connect – and tick the box for ‘span multiple monitors’

I can now run my VM across both screens – and both at 1920×1080.

It’s a fiddly way to do it – but luckily it’s so quick to re-boot, it doesn’t matter !

Yes – as Scott Hanselman mentioned, living a High-DPI desktop lifestyle can be painful….

#FirstWorldProblems

But – it’s a problem I’m happy to live with.    Viva la 4K !!

Smile

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2 thoughts on “Problems with 4K UHD and HyperV VM

  1. Thanks Chris… I am also a SharePoint developer and I have also recently bought New XPS 9550 .. Its truly a beast.. I think its the most fastest machine I ever used (except server)

    I am using VirtualBox and have the same resolution issue because of high DPI .. I have managed to bring the VM screen resolution to almost full screen without scaling ..

    I will try your method… Thanks for the tip ..

    Cheers mate,
    Faheem

    Like

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