Sorry I haven'r seen you comment. As per your 1st question - I don't know that since I've only tried using 3 screens in 16.04, prior to that I had a desktop setup (11.04 to 14.04) with 2 screens without any problems, either using the nvidia drivers either the nouveau.
Regarding the nvidia propertiary drivers they don't work for me at all. Even when I did manage make them work the mini-display port didn't work so I could use only the screen in the HDMI port and the build-in screen. Only when I'm using the nouveau driver I'm able to use all the 3 screens together but with that annoying issue. ** Changed in: xorg (Ubuntu) Status: Expired => New -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1590492 Title: Cursor is flickering or leaving annoying trails using 3 monitors Status in xorg package in Ubuntu: New Bug description: Mouse cursor leaving trails or flickers when I've 2 external screens attached. One is in a HDMI port and the other in a Mini Display Port as well as the laptop built in monitor. The problem is more intense in the monitor that is attached in the HDMI port now but in previous installations the problem was more acute at the display attached in the Mini Display Port. Also the it seems that the flickering is quite prominent when I'm hovering on Chrome's/Chromium tabs or other widgets (possibly GTK's) Also what regards the cursor trails, that's happening in every screen when I'm hovering over the title bar or windows menu bar I'm running GnomeUbuntu 16.04 on a Dell XPS L512X using the Xorg nouveau display drivers with 16Gigs of RAM ``` #> lspci 00:00.0 Host bridge: Intel Corporation 3rd Gen Core processor DRAM Controller (rev 09) 00:01.0 PCI bridge: Intel Corporation Xeon E3-1200 v2/3rd Gen Core processor PCI Express Root Port (rev 09) 00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor Graphics Controller (rev 09) 00:14.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset Family USB xHCI Host Controller (rev 04) 00:16.0 Communication controller: Intel Corporation 7 Series/C210 Series Chipset Family MEI Controller #1 (rev 04) 00:1a.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset Family USB Enhanced Host Controller #2 (rev 04) 00:1b.0 Audio device: Intel Corporation 7 Series/C210 Series Chipset Family High Definition Audio Controller (rev 04) 00:1c.0 PCI bridge: Intel Corporation 7 Series/C210 Series Chipset Family PCI Express Root Port 1 (rev c4) 00:1c.2 PCI bridge: Intel Corporation 7 Series/C210 Series Chipset Family PCI Express Root Port 3 (rev c4) 00:1c.3 PCI bridge: Intel Corporation 7 Series/C210 Series Chipset Family PCI Express Root Port 4 (rev c4) 00:1d.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset Family USB Enhanced Host Controller #1 (rev 04) 00:1f.0 ISA bridge: Intel Corporation HM77 Express Chipset LPC Controller (rev 04) 00:1f.2 SATA controller: Intel Corporation 7 Series Chipset Family 6-port SATA Controller [AHCI mode] (rev 04) 00:1f.3 SMBus: Intel Corporation 7 Series/C210 Series Chipset Family SMBus Controller (rev 04) 01:00.0 VGA compatible controller: NVIDIA Corporation GK107M [GeForce GT 640M] (rev a1) 01:00.1 Audio device: NVIDIA Corporation GK107 HDMI Audio Controller (rev a1) 07:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 07) 08:00.0 Network controller: Intel Corporation Centrino Advanced-N 6235 (rev 24) 09:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS5209 PCI Express Card Reader (rev 01) 09:00.1 SD Host controller: Realtek Semiconductor Co., Ltd. RTS5209 PCI Express Card Reader (rev 01) ```` #> xrandr --listactivemonitors Monitors: 3 0: +*HDMI1 1920/480x1080/270+1920+0 HDMI1 1: +LVDS1 1920/344x1080/193+3840+0 LVDS1 2: +DVI-D-1-1 1920/480x1080/270+0+0 DVI-D-1-1 #> xrandr --listproviders Providers: number : 3 Provider 0: id: 0x8a cap: 0x9, Source Output, Sink Offload crtcs: 4 outputs: 5 associated providers: 2 name:Intel Provider 1: id: 0x45 cap: 0x6, Sink Output, Source Offload crtcs: 4 outputs: 2 associated providers: 2 name:nouveau Provider 2: id: 0x45 cap: 0x6, Sink Output, Source Offload crtcs: 4 outputs: 2 associated providers: 2 name:nouveau ``` ``` #>xrandr --prop Screen 0: minimum 8 x 8, current 5760 x 1080, maximum 32767 x 32767 LVDS1 connected 1920x1080+3840+0 (normal left inverted right x axis y axis) 344mm x 193mm _MUTTER_PRESENTATION_OUTPUT: 0 EDID: 00ffffffffffff0006afed0000000000 001501049022137802d1159e59539b27 1e505400000001010101010101010101 010101010101343580a6703808403064 310058c11000001a782380a670380840 3064310058c11000001a000000fe0036 39383558804231353648544600000000 00004122960111000002010a2020003d BACKLIGHT: 82 range: (0, 100) Backlight: 82 range: (0, 100) scaling mode: Full aspect supported: None, Full, Center, Full aspect 1920x1080 60.01*+ 59.93 40.01 1680x1050 59.95 59.88 1600x1024 60.17 1400x1050 59.98 1600x900 60.00 1280x1024 60.02 1440x900 59.89 1280x960 60.00 1368x768 60.00 1360x768 59.80 59.96 1152x864 60.00 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 640x360 60.00 DP1 disconnected (normal left inverted right x axis y axis) Broadcast RGB: Automatic supported: Automatic, Full, Limited 16:235 audio: auto supported: force-dvi, off, auto, on HDMI1 connected primary 1920x1080+1920+0 (normal left inverted right x axis y axis) 480mm x 270mm EDID: 00ffffffffffff001e6db85a01010101 0118010380301b78ea3135a5554ea126 0c5054a54b00714f81809500b300a9c0 810081c09040023a801871382d40582c 4500e00e1100001e000000fd00384b1e 530f000a202020202020000000fc004c 47204950532046554c4c4844000000ff 000a2020202020202020202020200164 02031df14a900403011412051f101323 0907078301000065030c001000023a80 1871382d40582c4500e00e1100001e01 1d8018711c1620582c2500e00e110000 9e011d007251d01e206e285500e00e11 00001e8c0ad08a20e02d10103e9600e0 0e110000180000000000000000000000 000000000000000000000000000000ae _MUTTER_PRESENTATION_OUTPUT: 0 aspect ratio: Automatic supported: Automatic, 4:3, 16:9 Broadcast RGB: Automatic supported: Automatic, Full, Limited 16:235 audio: auto supported: force-dvi, off, auto, on 1920x1080 60.00*+ 50.00 59.94 1920x1080i 60.00 50.00 59.94 1680x1050 59.88 1400x1050 59.95 1600x900 60.00 1280x1024 75.02 60.02 1440x900 59.90 1280x800 59.91 1152x864 75.00 1280x720 60.00 50.00 59.94 1024x768 75.08 60.00 800x600 75.00 60.32 720x576 50.00 720x480 60.00 59.94 640x480 75.00 60.00 59.94 720x400 70.08 VGA1 disconnected (normal left inverted right x axis y axis) VIRTUAL1 disconnected (normal left inverted right x axis y axis) eDP-1-1 disconnected dithering depth: 6 bpc supported: auto, 6 bpc, 8 bpc dithering mode: off supported: auto, off, static 2x2, dynamic 2x2, temporal scaling mode: None supported: None, Full, Center, Full aspect color vibrance: 150 range: (0, 200) vibrant hue: 90 range: (0, 180) DVI-D-1-1 connected 1920x1080+0+0 480mm x 270mm EDID: 00ffffffffffff001e6db85a01010101 0118010380301b78ea3135a5554ea126 0c5054a54b00714f81809500b300a9c0 810081c09040023a801871382d40582c 4500e00e1100001e000000fd00384b1e 530f000a202020202020000000fc004c 47204950532046554c4c4844000000ff 000a2020202020202020202020200164 02031df14a900403011412051f101323 0907078301000065030c001000023a80 1871382d40582c4500e00e1100001e01 1d8018711c1620582c2500e00e110000 9e011d007251d01e206e285500e00e11 00001e8c0ad08a20e02d10103e9600e0 0e110000180000000000000000000000 000000000000000000000000000000ae _MUTTER_PRESENTATION_OUTPUT: 0 dithering depth: 6 bpc supported: auto, 6 bpc, 8 bpc dithering mode: off supported: auto, off, static 2x2, dynamic 2x2, temporal scaling mode: None supported: None, Full, Center, Full aspect color vibrance: 150 range: (0, 200) vibrant hue: 90 range: (0, 180) underscan vborder: 0 range: (0, 128) underscan hborder: 0 range: (0, 128) underscan: off supported: auto, off, on 1920x1080 60.00*+ 50.00 59.94 1920x1080i 60.00 50.00 59.94 1680x1050 59.88 1400x1050 59.95 1600x900 60.00 1280x1024 75.02 60.02 1440x900 59.90 1280x800 59.91 1152x864 75.00 1280x720 60.00 50.00 59.94 1024x768 75.08 60.00 800x600 75.00 60.32 720x576 50.00 720x480 60.00 59.94 640x480 75.00 60.00 59.94 720x400 70.08 1920x1080 (0x46) 148.500MHz +HSync +VSync h: width 1920 start 2008 end 2052 total 2200 skew 0 clock 67.50KHz v: height 1080 start 1084 end 1089 total 1125 clock 60.00Hz 1920x1080 (0x47) 148.500MHz +HSync +VSync h: width 1920 start 2448 end 2492 total 2640 skew 0 clock 56.25KHz v: height 1080 start 1084 end 1089 total 1125 clock 50.00Hz 1920x1080 (0x48) 148.352MHz +HSync +VSync h: width 1920 start 2008 end 2052 total 2200 skew 0 clock 67.43KHz v: height 1080 start 1084 end 1089 total 1125 clock 59.94Hz 1920x1080i (0x49) 74.250MHz +HSync +VSync Interlace h: width 1920 start 2008 end 2052 total 2200 skew 0 clock 33.75KHz v: height 1080 start 1084 end 1094 total 1125 clock 60.00Hz 1920x1080i (0x4a) 74.250MHz +HSync +VSync Interlace h: width 1920 start 2448 end 2492 total 2640 skew 0 clock 28.12KHz v: height 1080 start 1084 end 1094 total 1125 clock 50.00Hz 1920x1080i (0x4b) 74.176MHz +HSync +VSync Interlace h: width 1920 start 2008 end 2052 total 2200 skew 0 clock 33.72KHz v: height 1080 start 1084 end 1094 total 1125 clock 59.94Hz 1680x1050 (0x4c) 119.000MHz +HSync -VSync h: width 1680 start 1728 end 1760 total 1840 skew 0 clock 64.67KHz v: height 1050 start 1053 end 1059 total 1080 clock 59.88Hz 1400x1050 (0x4d) 101.000MHz +HSync -VSync h: width 1400 start 1448 end 1480 total 1560 skew 0 clock 64.74KHz v: height 1050 start 1053 end 1057 total 1080 clock 59.95Hz 1600x900 (0x4e) 108.000MHz +HSync +VSync h: width 1600 start 1624 end 1704 total 1800 skew 0 clock 60.00KHz v: height 900 start 901 end 904 total 1000 clock 60.00Hz 1280x1024 (0x4f) 135.000MHz +HSync +VSync h: width 1280 start 1296 end 1440 total 1688 skew 0 clock 79.98KHz v: height 1024 start 1025 end 1028 total 1066 clock 75.02Hz 1280x1024 (0x50) 108.000MHz +HSync +VSync h: width 1280 start 1328 end 1440 total 1688 skew 0 clock 63.98KHz v: height 1024 start 1025 end 1028 total 1066 clock 60.02Hz 1440x900 (0x51) 88.750MHz +HSync -VSync h: width 1440 start 1488 end 1520 total 1600 skew 0 clock 55.47KHz v: height 900 start 903 end 909 total 926 clock 59.90Hz 1280x800 (0x52) 71.000MHz +HSync -VSync h: width 1280 start 1328 end 1360 total 1440 skew 0 clock 49.31KHz v: height 800 start 803 end 809 total 823 clock 59.91Hz 1152x864 (0x53) 108.000MHz +HSync +VSync h: width 1152 start 1216 end 1344 total 1600 skew 0 clock 67.50KHz v: height 864 start 865 end 868 total 900 clock 75.00Hz 1280x720 (0x54) 74.250MHz +HSync +VSync h: width 1280 start 1390 end 1430 total 1650 skew 0 clock 45.00KHz v: height 720 start 725 end 730 total 750 clock 60.00Hz 1280x720 (0x55) 74.250MHz +HSync +VSync h: width 1280 start 1720 end 1760 total 1980 skew 0 clock 37.50KHz v: height 720 start 725 end 730 total 750 clock 50.00Hz 1280x720 (0x56) 74.176MHz +HSync +VSync h: width 1280 start 1390 end 1430 total 1650 skew 0 clock 44.96KHz v: height 720 start 725 end 730 total 750 clock 59.94Hz 1024x768 (0x57) 78.800MHz +HSync +VSync h: width 1024 start 1040 end 1136 total 1312 skew 0 clock 60.06KHz v: height 768 start 769 end 772 total 800 clock 75.08Hz 1024x768 (0x58) 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 (0x59) 49.500MHz +HSync +VSync h: width 800 start 816 end 896 total 1056 skew 0 clock 46.88KHz v: height 600 start 601 end 604 total 625 clock 75.00Hz 800x600 (0x5a) 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 720x576 (0x5b) 27.000MHz -HSync -VSync h: width 720 start 732 end 796 total 864 skew 0 clock 31.25KHz v: height 576 start 581 end 586 total 625 clock 50.00Hz 720x480 (0x5c) 27.027MHz -HSync -VSync h: width 720 start 736 end 798 total 858 skew 0 clock 31.50KHz v: height 480 start 489 end 495 total 525 clock 60.00Hz 720x480 (0x5d) 27.000MHz -HSync -VSync h: width 720 start 736 end 798 total 858 skew 0 clock 31.47KHz v: height 480 start 489 end 495 total 525 clock 59.94Hz 640x480 (0x5e) 31.500MHz -HSync -VSync h: width 640 start 656 end 720 total 840 skew 0 clock 37.50KHz v: height 480 start 481 end 484 total 500 clock 75.00Hz 640x480 (0x5f) 25.200MHz -HSync -VSync h: width 640 start 656 end 752 total 800 skew 0 clock 31.50KHz v: height 480 start 490 end 492 total 525 clock 60.00Hz 640x480 (0x60) 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 720x400 (0x61) 28.320MHz -HSync +VSync h: width 720 start 738 end 846 total 900 skew 0 clock 31.47KHz v: height 400 start 412 end 414 total 449 clock 70.08Hz ``` ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: xorg 1:7.7+13ubuntu3 ProcVersionSignature: Ubuntu 4.4.0-22.40-generic 4.4.8 Uname: Linux 4.4.0-22-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.1 Architecture: amd64 CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: None Date: Wed Jun 8 18:14:04 2016 DistUpgraded: Fresh install DistroCodename: xenial DistroVariant: ubuntu DkmsStatus: bbswitch, 0.8, 4.4.0-22-generic, x86_64: installed ExtraDebuggingInterest: Yes GraphicsCard: Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0166] (rev 09) (prog-if 00 [VGA controller]) Subsystem: Dell 3rd Gen Core processor Graphics Controller [1028:054f] NVIDIA Corporation GK107M [GeForce GT 640M] [10de:0fd2] (rev a1) (prog-if 00 [VGA controller]) Subsystem: Dell GeForce GT 640M [1028:054f] InstallationDate: Installed on 2016-05-23 (15 days ago) InstallationMedia: Ubuntu-GNOME 16.04 LTS "Xenial Xerus" - Release amd64 (20160421) MachineType: Dell Inc. XPS L521X ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-22-generic root=UUID=6da1f007-1951-427a-bd45-58a323fa9d08 ro quiet splash vt.handoff=7 SourcePackage: xorg UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 08/27/2012 dmi.bios.vendor: Dell Inc. dmi.bios.version: A09 dmi.board.name: 08PH19 dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 8 dmi.chassis.vendor: Dell Inc. dmi.chassis.version: A09 dmi.modalias: dmi:bvnDellInc.:bvrA09:bd08/27/2012:svnDellInc.:pnXPSL521X:pvrA09:rvnDellInc.:rn08PH19:rvrA00:cvnDellInc.:ct8:cvrA09: dmi.product.name: XPS L521X dmi.product.version: A09 dmi.sys.vendor: Dell Inc. version.compiz: compiz N/A version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.67-1ubuntu0.16.04.1 version.libgl1-mesa-dri: libgl1-mesa-dri 11.2.0-1ubuntu2 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 11.2.0-1ubuntu2 version.xserver-xorg-core: xserver-xorg-core 2:1.18.3-1ubuntu2.2 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.1-1ubuntu2 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.7.0-1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20160325-1ubuntu1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.12-1build2 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1590492/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp