[CentOS] 1600x900 not available

Wed Jan 10 14:54:56 UTC 2018
Giles Coochey <giles at coochey.net>

On 10/01/2018 14:43, Sean Smith wrote:
> My laptop is a Dell XPS-13 running CentOS 7.  It has a 13" 1920x1080 
> screen and it's a bit difficult for my mid-40s eyesight.  Fedora and 
> Debian, on this laptop, give me the option of choosing 1600x900 which 
> is much easier for me to read but CentOS doesn't show this resolution 
> as available.
> I followed the steps I found in a post on stackexchange using xrandr, 
> substituting 1600x900 where applicable and it worked but, once I 
> rebooted, it went back to 1920x1080 with no 1600x900 option in 
> settings-display.
> Is there a way I can add 1600x900 resolution the list of available 
> resolutions in settings-display? 
Bit of a generic answer, and not a solution, but the problem for you 
isn't the resolution, it is the DPI you have set, isn't there a way for 
you to change the DPI without losing out on the quality of the screen?