Display setting problem with 4k monitor

[Massimo Canonico]

Hi all,

I've bought a new laptop (Dell xps 13.3) and the monitor resolution is 
3200x1800. Now the problem is that I cannot use this laptop with my 
external monitor which I use as an extended monitor. The external  
monitor could reach 1280x1024. So when I try to move a window from the 
laptop monitor to the external monitor, it appears too big.

I haven't this problem with my previous dell xps and what it is more 
important, if I run an Ubuntu live distro, I can see various setting to 
manage displays such as "windows scaling" where I can adjust the windows 
sizes.

So,

- why fedora does not provide the same setting as Ubuntu? Ubuntu 
proposes many different resolutions and specific window scaling for the 
two monitors.

- is there something that I can do in fedora?

I really do no want switch to Ubuntu after more than 20 years with fedora.

After my signature the xrandr output.

Thanks,

Massimo

Screen 0: minimum 320 x 200, current 4480 x 1800, maximum 8192 x 8192
eDP-1 connected primary 3200x1800+0+0 (normal left inverted right x axis 
y axis) 294mm x 165mm
    3200x1800     59.98*+  47.99
    2048x1536     60.00
    1920x1440     60.00
    1856x1392     60.01
    1792x1344     60.01
    1600x1200     60.00
    1400x1050     59.98
    1280x1024     60.02
    1280x960      60.00
    1024x768      60.04    60.00
    960x720       60.00
    928x696       60.05
    896x672       60.01
    800x600       60.00    60.32    56.25
    700x525       59.98
    640x512       60.02
    640x480       60.00    59.94
    512x384       60.00
    400x300       60.32    56.34
    320x240       60.05
DP-1 connected 1280x1024+3200+0 (normal left inverted right x axis y 
axis) 338mm x 270mm
    1280x1024     60.02*+  75.02
    1152x864      75.00
    1024x768      75.03    60.00
    832x624       74.55
    800x600       75.00    60.32
    640x480       75.00    59.94
    720x400       70.08
HDMI-1 disconnected (normal left inverted right x axis y axis)
DP-2 disconnected (normal left inverted right x axis y axis)
HDMI-2 disconnected (normal left inverted right x axis y axis)

[Massimo Canonico]

If someone has a similar problem, I suggest to read this page:

https://wiki.archlinux.org/index.php/HiDPI

It helps me a lot, but I'm still having problem with the monitors. 
Zooming/panning make the display blurry and (as suggested in the web 
page) I should try to adjust the "sharpness" parameter, but I do not 
find it in Fedora.

I am still wondering why fedora does not provide a complete "display 
setting" in order to manage the new monitors.

Best,

Massimo


On 01/17/2017 10:32 AM, Massimo Canonico wrote:
>  Hi all,
>
>  I've bought a new laptop (Dell xps 13.3) and the monitor resolution is 
>  3200x1800. Now the problem is that I cannot use this laptop with my 
>  external monitor which I use as an extended monitor. The external  
>  monitor could reach 1280x1024. So when I try to move a window from the 
>  laptop monitor to the external monitor, it appears too big.
>
>  I haven't this problem with my previous dell xps and what it is more 
>  important, if I run an Ubuntu live distro, I can see various setting 
>  to manage displays such as "windows scaling" where I can adjust the 
>  windows sizes.
>
>  So,
>
>  - why fedora does not provide the same setting as Ubuntu? Ubuntu 
>  proposes many different resolutions and specific window scaling for 
>  the two monitors.
>
>  - is there something that I can do in fedora?
>
>  I really do no want switch to Ubuntu after more than 20 years with 
>  fedora.
>
>  After my signature the xrandr output.
>
>  Thanks,
>
>  Massimo
>
>  Screen 0: minimum 320 x 200, current 4480 x 1800, maximum 8192 x 8192
>  eDP-1 connected primary 3200x1800+0+0 (normal left inverted right x 
>  axis y axis) 294mm x 165mm
>     3200x1800     59.98*+  47.99
>     2048x1536     60.00
>     1920x1440     60.00
>     1856x1392     60.01
>     1792x1344     60.01
>     1600x1200     60.00
>     1400x1050     59.98
>     1280x1024     60.02
>     1280x960      60.00
>     1024x768      60.04    60.00
>     960x720       60.00
>     928x696       60.05
>     896x672       60.01
>     800x600       60.00    60.32    56.25
>     700x525       59.98
>     640x512       60.02
>     640x480       60.00    59.94
>     512x384       60.00
>     400x300       60.32    56.34
>     320x240       60.05
>  DP-1 connected 1280x1024+3200+0 (normal left inverted right x axis y 
>  axis) 338mm x 270mm
>     1280x1024     60.02*+  75.02
>     1152x864      75.00
>     1024x768      75.03    60.00
>     832x624       74.55
>     800x600       75.00    60.32
>     640x480       75.00    59.94
>     720x400       70.08
>  HDMI-1 disconnected (normal left inverted right x axis y axis)
>  DP-2 disconnected (normal left inverted right x axis y axis)
>  HDMI-2 disconnected (normal left inverted right x axis y axis)
>
>

[Roberto Ragusa]

On 01/25/2017 10:01 AM, Massimo Canonico wrote:
>  If someone has a similar problem, I suggest to read this page:
>  
>  https://wiki.archlinux.org/index.php/HiDPI
>  
>  It helps me a lot, but I'm still having problem with the monitors. Zooming/panning
> make the display blurry and (as suggested in the web page) I should try to adjust the
> "sharpness" parameter, but I do not find it in Fedora.
>  
>  I am still wondering why fedora does not provide a complete "display setting"
> in order to manage the new monitors. 
I definitely bet it is blurry!
After reading that page, I can't believe what kind of craziness is suggested in the
GNOME section:
using scaling-factor and then partially compensating with xrandr.
The final result for subpixel antialiased text must be horrific.

Involving additional post-processing with "sharpness" is the final touch.

Regards.

-- 
   Roberto Ragusa    mail at robertoragusa.it