I am experiencing the same issue, using a Thinkpad W520, on 16.04. Two external monitors are connected via DVI. On boot, all three monitors are mirrored, and correctly show the Ubuntu log. After logging in, I get the same error messages:
The selected configuration for displays could not be applied could not set the configuration for CRTC 64 and GDBus.Error:org.gtk.GDBus.UnmappedGError.Quark._gsd_2drr_2derror_2dquark.Code2: could not set the configuration for CRTC 64 One of the monitors is disabled. If I enable it using the Unity Settings app, the same error message show up. Tailing -f /var/log/Xorg.0.log while enabling the monitor reveals: [ 451.532] (II) intel(0): resizing framebuffer to 5440x1672 [ 451.582] Cannot do multiple crtcs without X server dirty tracking 2 interface [ 451.582] randr: failed to set shadow slave pixmap [ 451.582] (EE) NOUVEAU(G0): failed to set mode: No space left on device This appears to be the same bug as #1597437. It also seems to have been resolved in Fedora: https://bugzilla.redhat.com/show_bug.cgi?id=1307204. ** Bug watch added: Red Hat Bugzilla #1307204 https://bugzilla.redhat.com/show_bug.cgi?id=1307204 -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1556459 Title: [Lenovo ThinkPad W530] Regression: cannot set up 3 display configuration any more (Optimus) Status in xorg package in Ubuntu: Triaged Bug description: I cannot set up the third monitor any more (it was working beginning of March 2016 with Ubuntu 16.04). The configuration with NVIDIA Optimus starts with builtin display (of Thinkpad W530) and one of (3K) monitors, the second monitor is detected, but not used. The unity configuration tool shows me two message boxes: "The selected configuration for displays could not be applied could not set the configuration for CRTC 64" and "Failed to apply configuration: %s GDBus.Error:org.gtk.GDBus.UnmappedGError.Quark._gsd_2drr_2derror_2dquark.Code2: could not set the configuration for CRTC 64 " The first one I have seen at boot time on login screen (with 3 displays) previously, the second one is new. The third monitor works if Optimus gets disabled in BIOS and the machine runs with Nvidia only ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: xorg 1:7.7+13ubuntu3 ProcVersionSignature: Ubuntu 4.4.0-12.28-generic 4.4.4 Uname: Linux 4.4.0-12-generic x86_64 .tmp.unity.support.test.0: ApportVersion: 2.20-0ubuntu3 Architecture: amd64 CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: compiz CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0' CompositorUnredirectFSW: true Date: Sat Mar 12 18:44:54 2016 DistUpgraded: Fresh install DistroCodename: xenial DistroVariant: ubuntu DkmsStatus: virtualbox, 5.0.16, 4.4.0-10-generic, x86_64: installed virtualbox, 5.0.16, 4.4.0-11-generic, x86_64: installed virtualbox, 5.0.16, 4.4.0-12-generic, x86_64: installed EcryptfsInUse: Yes ExtraDebuggingInterest: Yes, including running git bisection searches GraphicsCard: Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0166] (rev 09) (prog-if 00 [VGA controller]) Subsystem: Lenovo 3rd Gen Core processor Graphics Controller [17aa:21f5] NVIDIA Corporation GK107GLM [Quadro K2000M] [10de:0ffb] (rev a1) (prog-if 00 [VGA controller]) Subsystem: Lenovo GK107GLM [Quadro K2000M] [17aa:21f5] InstallationDate: Installed on 2016-02-25 (15 days ago) InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Alpha amd64 (20160225) MachineType: LENOVO 2447MU0 ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-12-generic root=UUID=c01ceec8-4b0c-447f-af8f-3e9c4ae90e15 ro rootflags=subvol=@ quiet splash SourcePackage: xorg Symptom: display UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 09/18/2015 dmi.bios.vendor: LENOVO dmi.bios.version: G5ETA3WW (2.63 ) dmi.board.asset.tag: Not Available dmi.board.name: 2447MU0 dmi.board.vendor: LENOVO dmi.board.version: 0B98401 WIN dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvrG5ETA3WW(2.63):bd09/18/2015:svnLENOVO:pn2447MU0:pvrThinkPadW530:rvnLENOVO:rn2447MU0:rvr0B98401WIN:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 2447MU0 dmi.product.version: ThinkPad W530 dmi.sys.vendor: LENOVO version.compiz: compiz 1:0.9.12.2+16.04.20160209-0ubuntu1 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.67-1 version.libgl1-mesa-dri: libgl1-mesa-dri 11.1.2-1ubuntu1 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 11.1.2-1ubuntu1 version.xserver-xorg-core: xserver-xorg-core 2:1.18.1-1ubuntu4 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.1-1ubuntu2 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.6.1-1ubuntu2 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20160218-1ubuntu3 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.12-1build2 xserver.bootTime: Sat Mar 12 18:30:45 2016 xserver.configfile: default xserver.logfile: /var/log/Xorg.0.log xserver.version: 2:1.18.1-1ubuntu4 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1556459/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp