Setting new mode for 2nd monitor fails

[Andrej van der Zee]

Hi,

Thanks for your prompt reply. Attached dmesg and Xorg.log.

Thanks,
Andrej

On Fri, Jun 9, 2017 at 6:46 PM, Alex Deucher <alexdeucher at gmail.com> wrote:

> On Fri, Jun 9, 2017 at 12:39 PM, Andrej van der Zee
> <andrejvanderzee at gmail.com> wrote:
> > Hi,
> >
> > My external monitors resolution is too low, but xrandr does not show any
> > higher resolution. I am trying to create a new mode, but it falis to
> start
> > like below. How can I set the resolution of my external monitor to
> > 4096x2160?
>
> I suspect the driver has removed any modes that it can't support due
> to a lack of memory bandwidth or a support level (e.g., the 4K modes
> on your monitor require DP 1.2 and your card only supports DP 1.1).
> What chip is this?  You'll probably want to provide your xorg log and
> dmesg output.
>
> Alex
>
> >
> > Thanks,
> > Andrej
> >
> > $ xrandr
> > Screen 0: minimum 8 x 8, current 5440 x 1800, maximum 32767 x 32767
> > eDP1 connected primary 2880x1800+0+0 (normal left inverted right x axis y
> > axis) 331mm x 207mm
> >    2880x1800     59.99*+
> >    2560x1600     60.00
> >    2048x1536     60.00
> >    1920x1440     60.00
> >    1856x1392     60.01
> >    1792x1344     60.01
> >    1920x1200     60.00    59.95
> >    1920x1080     59.93
> >    1600x1200     60.00
> >    1680x1050     60.00    59.95    59.88
> >    1600x1024     60.17
> >    1400x1050     59.98
> >    1280x1024     60.02
> >    1440x900      59.89    60.00
> >    1400x900      60.00
> >    1280x960      60.00
> >    1360x768      59.80    59.96
> >    1280x800      60.00
> >    1152x864      60.00
> >    1024x768      60.00
> >    800x600       60.32    56.25
> >    640x480       59.94
> > DP1 connected 2560x1440+2880+0 (normal left inverted right x axis y axis)
> > 597mm x 336mm
> >    2560x1440     59.95*+
> >    1280x720      59.86
> > DP2 disconnected (normal left inverted right x axis y axis)
> > 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)
> > VGA1 disconnected (normal left inverted right x axis y axis)
> > VIRTUAL1 disconnected (normal left inverted right x axis y axis)
> >
> > $ xrandr --newmode "4096x2160_60.00"  759.54  4096 4424 4880 5664  2160
> 2161
> > 2164 2235  -HSync +Vsync
> > $ xrandr --addmode DP1 4096x2160_60.00
> > $ xrandr --verbose --output DP1 --mode  4096x2160_60.00
> > screen 0: 5440x2160 1438x571 mm  96.05dpi
> > crtc 2: 4096x2160_60.00  60.00 +0+0 "DP2"
> > xrandr: Configure crtc 2 failed
> > crtc 0: disable
> > crtc 1: disable
> > crtc 2: disable
> > crtc 3: disable
> > screen 0: revert
> > crtc 0: revert
> > crtc 1: revert
> > crtc 2: revert
> > crtc 3: revert
> >
> >
> >
> > _______________________________________________
> > xorg at lists.x.org: X.Org support
> > Archives: http://lists.freedesktop.org/archives/xorg
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>



-- 
Andrej van der Zee
Oranje-Vrijstaatkade 49
1093KS Amsterdam
+31-(0)6-8133-9388
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