[GTALUG] Screen Resolution Problem with Ubuntu

William Park opengeometry at yahoo.ca
Sun Oct 16 16:33:33 EDT 2016


If you by-pass KVM and connect directly, what happens?
-- 
William

On Sun, Oct 16, 2016 at 03:28:24PM -0400, Stephen via talk wrote:
> I have an H97M-E MB with on board Intel video chips.
> 
> I have a high def ASUS monitor.
> 
> I connect through a KVM switch, the video being VGA
> 
> For a long time I have had no trouble with 1920x1080 resolution.
> 
> Things started getting flaky in the spring. An OS update prevented Ubuntu
> system tools from recognizing the monitor and the highest res was 1024x768.
> 
> I decided to upgrade from 14.04 to 16.04 hoping that would fix. It did not
> and there was a lot of pain in the upgrade.
> 
> I finally found I could fix using xrandr.
> 
> Last week Ubuntu issued another OS update and it again caused the monitor to
> not be recognized and the max resolution to be 1024x768.
> 
> I ensured the full update was performed as discussed in recent email to this
> group.
> 
> I upgraded to 16.10. No pain but no joy.
> 
> I explored further with xrandr:
> 
> https://wiki.archlinux.org/index.php/xrandr
> 
> I used
> 
> cvt
> 
> I got: Modeline "1920x1080_60.00" 173.00 1920 2048 2248 2576 1080 1083 1088
> 1120 -hsync +vsync
> 
> xrandr --newmode "1920x1080_60.00" 173.00 1920 2048 2248 2576 1080 1083 1088
> 1120 -hsync +vsync
> xrandr --addmode 1920x1080_60.00
> 
> After the last commend, my screen resolution was reduced to something like
> 640x480 and an error window popped up. I could not read the full error
> message because it was off the screen. It started with "Could not set"
> 
> I had to do a system reset.
> 
> So still no joy. Still stuck at 1024x768.
> 
> I posted to the Ubuntu forums. No response yet.
> 
> Any and all suggestions welcome and appreciated.
> 
> -- 
> Stephen
> ---
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