I am a simple guy, so I go the easy way first... :)
I have been able to control any display (including HDMI, 2 VGA's in a DVI)
on desktops and laptops using 'Menu' -> 'Preferences' -> 'Display'
And it is persistent.
What problem are you having with it?
ET
Victor Odhner writes:
> I'm trying to bring an unknown monitor up to full resolution.
> It's a Visio E241-A1 (TV set), claiming 1920x1080.
> I’m running Linux Mint 18.3 Sylvia, with Mate.
> The computer (a new desktop) also drives an HDMI cable to a projector, but that’s turned off right now.
>
> I used --newmode with xrandr and it seemed to accept that,
> but then the --addmode said it didn’t know the new mode:
>
> xrandr: cannot find mode 1920x1080_60.00
>
> Details below.
> So, is there a way to make this work?
>
> The Details:
>
> xrandr: cannot find mode 1920x1080_60.00
>
> Here's the advice I've been working for:
>
> https://unix.stackexchange.com/questions/227876/how-to-set-custom-resolution-using-xrandr-when-the-resolution-is-not-available-i
>
> Original source: https://gist.github.com/debloper/2793261
>
> vodhner@MusicTeam ~ $ xrandr -q
> Screen 0: minimum 8 x 8, current 1024 x 768, maximum 32767 x 32767
> DP1 connected 1024x768+0+0 (normal left inverted right x axis y axis) 0mm x 0mm
> 1024x768 60.00*
> 800x600 60.32 56.25
> 848x480 60.00
> 640x480 59.94
> HDMI1 disconnected (normal left inverted right x axis y axis)
> HDMI2 disconnected (normal left inverted right x axis y axis)
> HDMI3 disconnected (normal left inverted right x axis y axis)
> VIRTUAL1 disconnected (normal left inverted right x axis y axis
>
> vodhner@MusicTeam ~ $ gtf 1020 1080 60
>
> # 1024x1080 @ 60.00 Hz (GTF) hsync: 67.08 kHz; pclk: 92.30 MHz
> Modeline "1024x1080_60.00" 92.30 1024 1088 1200 1376 1080 1081 1084 1118 -HSync +Vsync
>
> vodhner@MusicTeam ~ $ xrandr --newmode "1024x1080_60.00" 92.30 1024 1088 1200 1376 1080 1081 1084 1118 -HSync +Vsync
>
> vodhner@MusicTeam ~ $ xrandr --addmode DP1 "1920x1080_60.00"
> xrandr: cannot find mode "1920x1080_60.00"
>
> vodhner@MusicTeam ~ $ xrandr --output DP1 --mode "1920x1080_60.00"
> xrandr: cannot find mode 1920x1080_60.00
> vodhner@MusicTeam ~ $
>
> Thanks,
>
> Victor
> ___________
>
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