Screeen frezes randomly

[Pavel Fischer]

Since update to 14.10 i have 4 times same error. The screen is friezed. Mouse cursor moves itself, but I can't click anything. Switching to other tty works but need much time (about a minute). "top" shows no processes, which uses 100% CPU. But kern.log has:
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Nov 10 17:42:44 bookaPF kernel: [ 991.541913] WARNING: CPU: 3 PID: 1597 at /build/buildd/linux-3.16.0/drivers/gpu/drm/i915/intel_display.c:3324 intel_crtc_wait_for_pending_flips+0x16c/0x180 [i915]()
Nov 10 17:42:44 bookaPF kernel: [ 991.541916] Modules linked in: ctr ccm bnep rfcomm uvcvideo intel_rapl ath3k btusb x86_pkg_temp_thermal intel_powerclamp videobuf2_vmalloc snd_hda_codec_realtek snd_hda_codec_generic videobuf2_memops snd_hda_codec_hdmi videobuf2_core coretemp v4l2_common bluetooth videodev media 6lowpan_iphc snd_soc_rt5640 kvm_intel i915 kvm snd_soc_rl6231 arc4 snd_hda_intel ath9k ath9k_common snd_hda_controller ath9k_hw snd_soc_core ath snd_hda_codec mac80211 snd_compress snd_pcm_dmaengine snd_hwdep snd_pcm crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel snd_seq_midi snd_seq_midi_event snd_rawmidi snd_seq snd_seq_device snd_timer acer_wmi aes_x86_64 lrw sparse_keymap gf128mul cfg80211 glue_helper drm_kms_helper drm snd i2c_hid parport_pc mei_me ablk_helper ppdev i2c_designware_platform i2c_designware_core cryptd soc_button_array joydev serio_raw i2c_algo_bit lp parport mei snd_soc_sst_acpi video lpc_ich dw_dmac mac_hid dw_dmac_core spi_pxa2xx_platform shpchp 8250_dw soundcore wmi nls_iso8859_1 hid_generic usbhid hid psmouse tg3 ahci libahci ptp pps_core sdhci_pci sdhci_acpi sdhci
Nov 10 17:42:44 bookaPF kernel: [ 991.542000] CPU: 3 PID: 1597 Comm: Xorg Not tainted 3.16.0-24-generic #32-Ubuntu
Nov 10 17:42:44 bookaPF kernel: [ 991.542002] Hardware name: Acer Aspire E1-572/EA50_HW , BIOS V2.13 11/21/2013
Nov 10 17:42:44 bookaPF kernel: [ 991.542005] 0000000000000009 ffff8800868b3c18 ffffffff8177fcbc 0000000000000000
Nov 10 17:42:44 bookaPF kernel: [ 991.542009] ffff8800868b3c50 ffffffff8106fd8d 0000000000000000 ffff880153566000
Nov 10 17:42:44 bookaPF kernel: [ 991.542013] ffff8801534a8210 ffff88008d4f7800 ffff88008d4f7800 ffff8800868b3c60
Nov 10 17:42:44 bookaPF kernel: [ 991.542017] Call Trace:
Nov 10 17:42:44 bookaPF kernel: [ 991.542028] [<ffffffff8177fcbc>] dump_stack+0x45/0x56
Nov 10 17:42:44 bookaPF kernel: [ 991.542036] [<ffffffff8106fd8d>] warn_slowpath_common+0x7d/0xa0
Nov 10 17:42:44 bookaPF kernel: [ 991.542040] [<ffffffff8106fe6a>] warn_slowpath_null+0x1a/0x20
Nov 10 17:42:44 bookaPF kernel: [ 991.542068] [<ffffffffc0b4fffc>] intel_crtc_wait_for_pending_flips+0x16c/0x180 [i915]
Nov 10 17:42:44 bookaPF kernel: [ 991.542075] [<ffffffff810b9590>] ? prepare_to_wait_event+0x100/0x100
Nov 10 17:42:44 bookaPF kernel: [ 991.542098] [<ffffffffc0b52ac3>] intel_crtc_disable_planes+0x33/0x1c0 [i915]
Nov 10 17:42:44 bookaPF kernel: [ 991.542103] [<ffffffff81784e5b>] ? __ww_mutex_lock+0x1b/0xb0
Nov 10 17:42:44 bookaPF kernel: [ 991.542123] [<ffffffffc0b53a17>] haswell_crtc_disable+0x57/0x2e0 [i915]
Nov 10 17:42:44 bookaPF kernel: [ 991.542127] [<ffffffff81785ab2>] ? mutex_lock+0x12/0x30
Nov 10 17:42:44 bookaPF kernel: [ 991.542148] [<ffffffffc0b54457>] intel_crtc_update_dpms+0x67/0xa0 [i915]
Nov 10 17:42:44 bookaPF kernel: [ 991.542170] [<ffffffffc0b58ac9>] intel_connector_dpms+0x59/0x70 [i915]
Nov 10 17:42:44 bookaPF kernel: [ 991.542194] [<ffffffffc059be19>] drm_mode_obj_set_property_ioctl+0x399/0x3a0 [drm]
Nov 10 17:42:44 bookaPF kernel: [ 991.542213] [<ffffffffc059be50>] drm_mode_connector_property_set_ioctl+0x30/0x40 [drm]
Nov 10 17:42:44 bookaPF kernel: [ 991.542226] [<ffffffffc058aa4f>] drm_ioctl+0x1df/0x680 [drm]
Nov 10 17:42:44 bookaPF kernel: [ 991.542236] [<ffffffff810a9de8>] ? __enqueue_entity+0x78/0x80
Nov 10 17:42:44 bookaPF kernel: [ 991.542244] [<ffffffff8101e04f>] ? __switch_to_xtra+0x13f/0x170
Nov 10 17:42:44 bookaPF kernel: [ 991.542249] [<ffffffff811f4bc8>] do_vfs_ioctl+0x2c8/0x4a0
Nov 10 17:42:44 bookaPF kernel: [ 991.542253] [<ffffffff8178294d>] ? __schedule+0x39d/0x890
Nov 10 17:42:44 bookaPF kernel: [ 991.542257] [<ffffffff811f4e21>] SyS_ioctl+0x81/0xa0
Nov 10 17:42:44 bookaPF kernel: [ 991.542262] [<ffffffff81787ced>] system_call_fastpath+0x1a/0x1f
Nov 10 17:42:44 bookaPF kernel: [ 991.542264] ---[ end trace 95ed265a8c3bde2c ]---

I have same error on my work-Laptop (Lenovo Thinkpad t540p with i915 driver too) too, but only one times.

ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: xserver-xorg-video-intel 2:2.99.914-1~exp1ubuntu4
ProcVersionSignature: Ubuntu 3.16.0-24.32-generic 3.16.4
Uname: Linux 3.16.0-24-generic x86_64
.tmp.unity.support.test.0:

ApportVersion: 2.14.7-0ubuntu8
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
CurrentDesktop: Unity
Date: Mon Nov 10 18:09:33 2014
DistUpgraded: 2014-10-28 23:39:06,529 DEBUG enabling apt cron job
DistroCodename: utopic
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes
GraphicsCard:
 Intel Corporation Haswell-ULT Integrated Graphics Controller [8086:0a16] (rev 09) (prog-if 00 [VGA controller])
   Subsystem: Acer Incorporated [ALI] Device [1025:0775]
InstallationDate: Installed on 2014-07-17 (116 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
MachineType: Acer Aspire E1-572
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-24-generic.efi.signed root=UUID=01a1ca72-57c7-4cf5-8c99-efeabc53acb5 ro quiet splash acpi_osi=Linux acpi_backlight=vendor vt.handoff=7
SourcePackage: xserver-xorg-video-intel
UpgradeStatus: Upgraded to utopic on 2014-10-28 (12 days ago)
dmi.bios.date: 11/21/2013
dmi.bios.vendor: Insyde Corp.
dmi.bios.version: V2.13
dmi.board.asset.tag: Type2 - Board Asset Tag
dmi.board.name: EA50_HW
dmi.board.vendor: Acer
dmi.board.version: V2.13
dmi.chassis.asset.tag: Chassis Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: Acer
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnInsydeCorp.:bvrV2.13:bd11/21/2013:svnAcer:pnAspireE1-572:pvrV2.13:rvnAcer:rnEA50_HW:rvrV2.13:cvnAcer:ct10:cvrChassisVersion:
dmi.product.name: Aspire E1-572
dmi.product.version: V2.13
dmi.sys.vendor: Acer
version.compiz: compiz 1:0.9.12+14.10.20140918-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.56-1
version.libgl1-mesa-dri: libgl1-mesa-dri 10.3.0-0ubuntu3
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 10.3.0-0ubuntu3
version.xserver-xorg-core: xserver-xorg-core 2:1.16.0-1ubuntu1
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.0-1ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.4.0-2ubuntu2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.914-1~exp1ubuntu4
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu2
xserver.bootTime: Mon Nov 10 17:55:58 2014
xserver.configfile: default
xserver.errors:

xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:
 product id 18412
 vendor AUO
xserver.version: 2:1.16.0-1ubuntu1