This bug also appears on the latest LTS release, provided files are from live session so there is no nvidia-prime package installed (should I open new bug?) I am using Lenovo G580 and also have dual graphics cards intel/nvidia. I am enclosing lshw output in the attachment.
lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 16.04 LTS Release: 16.04 Codename: xenial xrandr Screen 0: minimum 8 x 8, current 2390 x 768, maximum 32767 x 32767 LVDS1 connected primary 1366x768+0+0 (normal left inverted right x axis y axis) 344mm x 194mm 1366x768 60.00*+ 1360x768 59.80 59.96 1280x720 60.00 1024x768 60.00 1024x576 60.00 960x540 60.00 800x600 60.32 56.25 864x486 60.00 640x480 59.94 720x405 60.00 680x384 60.00 640x360 60.00 DP1 disconnected (normal left inverted right x axis y axis) HDMI1 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) VGA-1-2 connected 1024x768+1366+0 0mm x 0mm 1024x768 60.00* 800x600 60.32 56.25 848x480 60.00 640x480 59.94 1024x768 (0x43) 65.000MHz -HSync -VSync h: width 1024 start 1048 end 1184 total 1344 skew 0 clock 48.36KHz v: height 768 start 771 end 777 total 806 clock 60.00Hz 800x600 (0x44) 40.000MHz +HSync +VSync h: width 800 start 840 end 968 total 1056 skew 0 clock 37.88KHz v: height 600 start 601 end 605 total 628 clock 60.32Hz 800x600 (0x45) 36.000MHz +HSync +VSync h: width 800 start 824 end 896 total 1024 skew 0 clock 35.16KHz v: height 600 start 601 end 603 total 625 clock 56.25Hz 640x480 (0x47) 25.175MHz -HSync -VSync h: width 640 start 656 end 752 total 800 skew 0 clock 31.47KHz v: height 480 start 490 end 492 total 525 clock 59.94Hz ** Attachment added: "lshw" https://bugs.launchpad.net/ubuntu/+source/nvidia-prime/+bug/1296020/+attachment/4660141/+files/lshw -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1296020 Title: [Asus U36JC] Non-existent display detected in both intel driver and nvidia driver (Optimus Laptop) (ubuntu trusty 14.04) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-prime/+bug/1296020/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs