I did as you wrote. No crash during boot and login. But there is some interesting error about 40 second:
(...) [ 40.710335] Could not create debugfs 'switch_mm' directory [ 40.710341] Could not create debugfs 'i915_context_free' directory [ 40.710344] Could not create debugfs 'i915_context_create' directory [ 40.710346] Could not create debugfs 'i915_ppgtt_release' directory [ 40.710349] Could not create debugfs 'i915_ppgtt_create' directory [ 40.710352] Could not create debugfs 'intel_gpu_freq_change' directory [ 40.710355] Could not create debugfs 'i915_reg_rw' directory [ 40.710357] Could not create debugfs 'i915_flip_complete' directory [ 40.710360] Could not create debugfs 'i915_flip_request' directory [ 40.710363] Could not create debugfs 'i915_ring_wait_end' directory [ 40.710366] Could not create debugfs 'i915_ring_wait_begin' directory [ 40.710368] Could not create debugfs 'i915_gem_request_wait_end' directory [ 40.710371] Could not create debugfs 'i915_gem_request_wait_begin' directory [ 40.710374] Could not create debugfs 'i915_gem_request_complete' directory (...) ** Attachment added: "dmesg" https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/1453538/+attachment/4479111/+files/dmesg -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to lightdm in Ubuntu. https://bugs.launchpad.net/bugs/1453538 Title: Invisible mouse pointer Status in Light Display Manager: Confirmed Status in lightdm package in Ubuntu: Triaged Bug description: After system boot on login screen mouse pointer is invisible. I am able to click to gadgets but its blind clicking. I dont know where is mouse pointer. When I'm switch to virtual console (CTRL+ALT+F1) and type sudo service lightdm restart command LightDM restarts and mouse pointer back to normal. ProblemType: Bug DistroRelease: Ubuntu 15.04 Package: lightdm 1.14.0-0ubuntu2 ProcVersionSignature: Ubuntu 3.19.0-17.17-lowlatency 3.19.6 Uname: Linux 3.19.0-17-lowlatency x86_64 ApportVersion: 2.17.2-0ubuntu1 Architecture: amd64 CurrentDesktop: Unity Date: Sun May 10 14:27:50 2015 InstallationDate: Installed on 2015-02-13 (85 days ago) InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1) LightdmConfig: [SeatDefaults] allow-guest = false SourcePackage: lightdm UpgradeStatus: Upgraded to vivid on 2015-04-25 (15 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/lightdm/+bug/1453538/+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