On Tue, 21 Apr 2020 11:49:59 -0700 stan via users 
<users@lists.fedoraproject.org> wrote:

> On Tue, 21 Apr 2020 12:40:30 -0500
> Ranjan Maitra <mai...@email.com> wrote:
>
> > On Tue, 21 Apr 2020 12:17:24 -0500 Ranjan Maitra <mai...@email.com>
> > wrote:
> >
> > > Hi,
> > >
> > > I recently got myself a UHD monitor.
> > >
> > > https://www.amazon.com/dp/B07JXCR263?tag=aboutcom02lifewire-20&linkCode=ogi&th=1&psc=1&ascsubtag=4138562%7Cneef17e57867342f0bc4b3af20a9ba60801
> > >
> > > However, when I connect to my 3840x2160 resolution laptop and use
> > > xrandr (through HDMI, supplied with the monitor) I do not even get
> > > an option for 3840x2160. Here is what I get:
>
> I see this in your original email in the xrandr output.
> >    3840x2160     60.00*+  59.98    59.97    48.00
> Does that not indicate that it is running at 3840x2160 at 60Hz?

Sorry, this line was for the laptop screen. But i have realized the issue. A 
USB-C to HDMI 2.0 is needed, apparently the type-C multihub sold by Dell does 
not work for UHD. Changing to the USB-C to HDMI dongle has fixed the issue and 
3840x2160 is available.

I have a different question however: is it safe to work now with the lid closed 
or will the laptop overheat? I have switched off the screen for the laptop 
using xrandr.

Many thanks,
Ranjan
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