On Mon, 19 Feb 2018 10:23:27 +0100
"Patrick Dupre" <pdupre@xxxxxxx> wrote:
> Screen 0: minimum 320 x 200, current 3520 x 1200, maximum 8192 x 8192
> HDMI-1 connected 1920x1080+1600+0 (normal left inverted right x axis y axis) 609mm x 347mm
> 1366x768 59.79 +
> 1920x1080 60.00* 50.00 59.94 30.00 25.00 24.00 29.97 23.98
As Ed already pointed out: the asterisk (*) in the line above means your
external monitor is set to 1920x1080, while its actual capabilities
can nicely handle only 1366x768. You can see that in the line before
with the plus (+) sign in it. That's why - probably - your fonts on this
monitor don't look as crisp as you want them.
man xrandr ....
> 1920x1080i 60.00 50.00 59.94
> 1280x720 60.00 50.00 59.94
> 1024x768 75.03 70.07 60.00
> 832x624 74.55
> 800x600 72.19 75.00 60.32
> 720x576 50.00
> 720x576i 50.00
> 720x480 60.00 59.94
> 720x480i 60.00 59.94
> 640x480 75.00 72.81 66.67 60.00 59.94
> 720x400 70.08
> 1920x1080_60.00 59.96
> DP-1 connected primary 1600x1200+0+0 (normal left inverted right x axis y axis) 408mm x 306mm
>
> I run
> xrandr --newmode "1920x1080_60.00" 173.00 1920 2048 2248 2576 1080 1083 1088 1120 -hsync +vsync
No. You changed the order of the commands. Quote of the BZ page:
-------------------------------
$ cvt 1360 768
# 1360x768 59.80 Hz (CVT) hsync: 47.72 kHz; pclk: 84.75 MHz
Modeline "1360x768_60.00" 84.75 1360 1432 1568 1776 768 771 781 798
-hsync +vsync
[copy/paste the resulting 'Modeline' from above into the next command:]
$ xrandr --newmode "1360x768_60.00" 84.75 1360 1432 1568 1776 768
771 781 798 -hsync +vsync $ xrandr --addmode HDMI-1 1360x768_60.00
$ xrandr --output HDMI-1 --mode 1360x768_60.00
----------------------------------
So you run first
$ cvt 1366x768
because this is max what your external monitor can handle, according to
xrandr ...
then
copy/paste the resulting 'Modeline' from the first command into the next
command. See quote above:
$ xrandr --newmode .....
$ xrandr --addmode .....
$ xrandr --output HDMI-1 ....
> cvt 1920 1080
> xrandr --addmode HDMI-1 1920x1080_60.00
> xrandr --output HDMI-1 --mode 1920x1080_60.00
>
> The monitor responds that it switched to 1920 x 1080
Because you told the poor fellow to do exactly that ... :)
>
>
> I do not see any improvement.
Still astonished? ... ;)
> DP-1 is the old (but sharp monitor)
> HDMI-1 is the new (but not sharp monitor)
Good to know ...
Two things you need to know. Read careful:
-- 0:
You probably have a file like
~/.config/monitors.xml
in your home dir - or wherever. Find it. Read it: It might be that this
file keeps setting your monitor(s?) to wrong settings/resolutions,
if these values in that file do not correspond with the actual
capabilities of your monitor(s) ...
If in doubt: move the file away for a while - don't delete it. Then
connect the external monitor.
-- 1:
On many (?) computers there's something like a built-in (?) key combo:
<WindowsKey - p> - Seems to work both on Linux and Windows.
If you have that on your computer, you might be able to change your
monitor settings (external, and, IIRC, also the internal ones) with
that combo: While this can be extremely convenient to attach
monitors you can end up all monitors turning into black screens. In
that case: press the combo again. If that does not help anymore I see
four options to save you:
-- ssh (good).
-- sysrq keys (works often).
-- Off button of your computer (bad).
-- Throwing both your computer and your monitor against the next
available walls (Don't do that).
--
Wolfgang Pfeiffer
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