On 09/27/2016 02:43 AM, Stefan W. Kleyer wrote:
I had a similar problem with my system. I solved it by forcing xrandr
to use a higher resolution. I'm not sure, if this is a good way, but
it works quite good for me.
1. Open a Terminal and type in "cvt screen_resolution":
$ cvt 1680 1050 60
You will get something like this (your's could be slightly other output):
# 1680x1050 59.95 Hz (CVT 1.76MA) hsync: 65.29 kHz; pclk: 146.25 MHz
Modeline "1680x1050_60.00" 146.25 1680 1784 1960 2240 1050 1053
1059 1089 -hsync +vsync
2. Create new xrandr mode with information from above:
$ xrandr --newmode "stuff after >Modeline< above"
So in my case:
$ xrandr --newmode "1680x1050_60.00" 146.25 1680 1784 1960 2240 1050
1053 1059 1089 -hsync +vsync
3. Check the name of the output device. You get it from
$ xrandr --query
E.g.:
Screen 0: minimum 8 x 8, current 1920 x 1080, maximum 16384 x 16384
LVDS-1 connected 1366x768 59.99 + 1360x768 59.80
59.96
...
VGA-1 disconnected HDMI-1 connected primary 1920x1080+0+0 477mm x
268mm 1920x1080 60.00*+ ...
4. Adding this mode to the output device you are using. In my case it
was VGA-1.
$ xrandr --addmode VGA-1 "1680x1050_60.00"
5. Setting new mode:
$ xrandr --output VGA-1 --mode "1680x1050_60.00"
If you do this one time, you can put 2.+4.+5. in a shell script and
execute it by startup or something. I wrote my script to be a switch
between laptop screen and external monitor, because it didn't worked
another way. Until now it is fixed on my machine.
Stefan:
Thank you for your reply that allows me to work-around the problem.
I got it to work, created a shell-script for it, and created a desktop
launcher to execute that shell-script.
It would be better if there were a way to execute it in the auto-start
processing, but I'm not sure of how to do that with a custom
shell-script (or desktop launcher). If someone knows how to do that, I
would appreciate the information.
In looking around on the machine (but I can't find it now on my main
machine), there was a desktop configuration file, and it had an "XRandR"
section, that included a "mode=" and a "command=" line. Neither line had
anything past the "=". I am wondering if I can put something there that
will make it happen. Any ideas?
Thanks again. At least this lets us use the resolution the monitor is
capable of.
--
Sincerely,
Aere
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