[lubuntu-users] Monitor Resolution Much Reduced on Lubuntu 16.04

[Stefan W. Kleyer]

Hi,

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.

I hope, this is useful.

Best regards,
Stefan

On Dienstag, 27. September 2016 07:40:28 CEST, Nio Wiklund wrote:
> Den 2016-09-27 kl. 07:29, skrev Aere Greenway:
>> Lubuntu Users:
>> 
>> One of my machines, running Lubuntu 16.04, has a monitor which has been
>> working (as long as we can remember on 14.04, and a long time after
>> upgrading to 16.04) at a resolution of 1680 x 1050 (or something like
>> that).  And it still runs with that resolution on Windows 10. ...
>
> Hi Aere,
>
> This is too bad. I suspect that a bad version of the graphics 
> driver came with an updated kernel. It might work better, if you 
> [re-install and] use an older version of the linux kernel.
>
> Please tell us about the graphics chip/card, and which graphics 
> driver, that is used now!
>
> Best regards
> Nio
>