Hello, not sure whether this list is send-patch-only or for support as well. However, I have Lenovo X1 Carbon 3rd gen, with 2560x1440 local panel and 4k (3840x2160) external display connected via display port (directly on X1). It has Intel HD 5500 graphics. using xrandr, I can see: xrandr Screen 0: minimum 8 x 8, current 2560 x 1440, maximum 32767 x 32767 eDP1 connected 2560x1440+0+0 (normal left inverted right x axis y axis) 310mm x 174mm 2560x1440 60.0*+ 1920x1440 60.0 1856x1392 60.0 1792x1344 60.0 1920x1200 60.0 1920x1080 59.9 1600x1200 60.0 1680x1050 60.0 59.9 1600x1024 60.2 1400x1050 60.0 1280x1024 60.0 1440x900 59.9 1280x960 60.0 1360x768 59.8 60.0 1152x864 60.0 1024x768 60.0 800x600 60.3 56.2 640x480 59.9 DP1 disconnected (normal left inverted right x axis y axis) DP1-8 connected (normal left inverted right x axis y axis) 1920x2160 60.0 + DP1-9 connected (normal left inverted right x axis y axis) 1920x2160 60.0 + 1920x1200 59.9 1920x1080 60.0 1600x1200 60.0 1680x1050 60.0 1280x1024 75.0 60.0 1280x800 59.8 1152x864 75.0 1024x768 75.1 60.0 800x600 75.0 60.3 640x480 75.0 60.0 720x400 70.1 DP2 disconnected (normal left inverted right x axis y axis) DP2-1 connected (normal left inverted right x axis y axis) 1920x1200 60.0 + 1920x1080 60.0 1600x1200 60.0 1680x1050 59.9 1280x1024 60.0 1280x960 60.0 1024x768 60.0 800x600 60.3 640x480 60.0 720x400 70.1 DP2-2 disconnected (normal left inverted right x axis y axis) DP2-3 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) VIRTUAL1 disconnected (normal left inverted right x axis y axis) So, I suppose, I have to use MST to have 3840x2160. However, how to do it using xrandr? Is is possible to do it with xrandr 1.4? xrandr -v xrandr program version 1.4.1 Server reports RandR version 1.4 I can set auto do DP1-8 output, which works, however, display shows 1920x2160 resolution scaled to the whole screen. I cannot set auto to DP1-9: xrandr --output DP1-9 --auto xrandr: Configure crtc 1 failed So, is there a way for now to display 4k on the external monitor? -- Lukáš Hejtmánek _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
