I have laptop with: Dual-Core Intel i5 CPU (https://ark.intel.com/content/www/us/en/ark/products/43544/intel-core-i5540m-processor-3m-cache-2-53-ghz.html)
and I would like to determine maximum supported display resolution (in order to connect external monitor)
am using HDMI to connect laptop(Dell Latitude E6410) to external monitor (benq GW2765 with native resolution 2560x1440)
At the moment only available max resolution in Settings in EOS is 1920x1080 and I want to change it to 2560x1440 (which is a native resolution for my LCD monitor)
but it is not shown as an option?
Want to see whether it is because it is not supported by laptop or can I change something in Elementary? I am running 6.1 Jolnir
xrandr didn't work :-(
I wasn't able to add the display mode I wanted, but...
I learned how to use dual monitor with Elementary (very easy)
I have changed external monitor settings to scale 1:1 to avoid distortion caused by using non-native display
and now with my CAD application shared between two screens (see below) it is reasonably usable
I am now convinced that the limitation is my laptop rather than anything else
(I have checked what GPU is available on laptop, using
VGA compatible controller: Intel Corporation Core Processor Integrated Graphics Controller (rev 02)
so, it sounds like I am stuck with this one :-(
UPDATE 2: Well... I was WRONG :-)
it is possible to add another display resolution!
The trick is to run
xrandr before doing anything else to establish which monitor/connection is called what (as you @Vlad have quite correctly pointed out and I have missed ...)
You can see that 2560x1440 is available to choose!
Resulting display still has black areas around it,
but it is definitely usable (especially when using both monitors)
This maybe related to the message I get when setting output of HDMI to new mode? (I don't like the word
bambuko@LatitudeE641005543265:~$ xrandr --output HDMI-1 --mode 2560x1440_60.00 xrandr: Configure crtc 0 failed
Further confirmed by running:
bambuko@LatitudeE641005543265:~$ xrandr --listactivemonitors Monitors: 2 0: +*HDMI-1 1920/597x1080/336+0+0 HDMI-1 1: +eDP-1 1280/303x800/190+320+1080 eDP-1
where it should be (if successful)
+HDMI-1 2560/***x1440/***+*+* HDMI-1
searching the web for
xrandr: Configure crtc 0 failed
returns a lot, but none of it makes any sense to me yet...
bambuko@LatitudeE641005543265:~$ lspci -knn | grep -iA3 'vga\|3d\|display' 00:02.0 VGA compatible controller : Intel Corporation Core Processor Integrated Graphics Controller [8086:0046] (rev 02) Subsystem: Dell Latitude E6410 [1028:040a] Kernel driver in use: i915 Kernel modules: i915
xrandr --listactivemonitorsto see connected displays' IDs,