This syslog entry seems to be related:

Aug  2 19:54:22 svenBlack kernel: [25424.345746] ------------[ cut here ]------------
Aug  2 19:54:22 svenBlack kernel: [25424.345779] WARNING: CPU: 0 PID: 0 at /build/linux-OdodyZ/linux-3.19.0/drivers/gpu/drm/i915/intel_display.c:9717 intel_check_page_flip+0xda/0xf0 [i915]()
Aug  2 19:54:22 svenBlack kernel: [25424.345781] Kicking stuck page flip: queued at 1523443, now 1523454
Aug  2 19:54:22 svenBlack kernel: [25424.345782] Modules linked in: hid_multitouch nls_iso8859_1 mmc_block ctr ccm rfcomm bnep rtsx_usb_ms memstick arc4 intel_rapl hid_sensor_als hid_sensor_accel_3d hid_sensor_incl_3d hid_sensor_magn_3d hid_sensor_gyro_3d hid_sensor_rotation iosf_mbi hid_sensor_trigger iwlmvm x86_pkg_temp_thermal industrialio_triggered_buffer kfifo_buf intel_powerclamp industrialio mac80211 coretemp hid_sensor_iio_common snd_hda_codec_hdmi kvm hid_sensor_hub uvcvideo crct10dif_pclmul videobuf2_vmalloc crc32_pclmul videobuf2_memops ghash_clmulni_intel videobuf2_core v4l2_common aesni_intel videodev iwlwifi aes_x86_64 media lrw gf128mul glue_helper snd_hda_codec_realtek ablk_helper cryptd snd_hda_codec_generic i915 snd_hda_intel snd_soc_rt5640 snd_hda_controller cfg80211 snd_soc_rl6231 snd_hda_codec snd_soc_core snd_hwdep joydev snd_seq_midi snd_compress snd_seq_midi_event snd_pcm_dmaengine drm_kms_helper snd_rawmidi drm ideapad_laptop snd_seq snd_pcm i2c_hid snd_seq_device snd_timer sparse_keymap i2c_algo_bit dw_dmac 8250_dw i2c_designware_platform dw_dmac_core i2c_designware_core spi_pxa2xx_platform mei_me snd btusb snd_soc_sst_acpi mei video soundcore lpc_ich shpchp soc_button_array serio_raw bluetooth mac_hid parport_pc ppdev lp parport autofs4 usbhid hid rtsx_usb_sdmmc rtsx_usb psmouse ahci libahci sdhci_acpi sdhci [last unloaded: hid_multitouch]
Aug  2 19:54:22 svenBlack kernel: [25424.345830] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G        W      3.19.0-25-generic #26-Ubuntu
Aug  2 19:54:22 svenBlack kernel: [25424.345831] Hardware name: LENOVO 20344/INVALID, BIOS 96CN30WW(V1.16) 04/15/2015
Aug  2 19:54:22 svenBlack kernel: [25424.345832]  ffffffffc07d4310 ffff88025f203d28 ffffffff817c4518 0000000000000007
Aug  2 19:54:22 svenBlack kernel: [25424.345834]  ffff88025f203d78 ffff88025f203d68 ffffffff81076a6a ffff88025f203d88
Aug  2 19:54:22 svenBlack kernel: [25424.345836]  ffff880096a88000 ffff880254048800 0000000000000000 ffff8802540489a8
Aug  2 19:54:22 svenBlack kernel: [25424.345838] Call Trace:
Aug  2 19:54:22 svenBlack kernel: [25424.345839]  <IRQ>  [<ffffffff817c4518>] dump_stack+0x45/0x57
Aug  2 19:54:22 svenBlack kernel: [25424.345848]  [<ffffffff81076a6a>] warn_slowpath_common+0x8a/0xc0
Aug  2 19:54:22 svenBlack kernel: [25424.345850]  [<ffffffff81076ae6>] warn_slowpath_fmt+0x46/0x50
Aug  2 19:54:22 svenBlack kernel: [25424.345863]  [<ffffffffc077fb8a>] intel_check_page_flip+0xda/0xf0 [i915]
Aug  2 19:54:22 svenBlack kernel: [25424.345875]  [<ffffffffc074c7f8>] ironlake_irq_handler+0x2e8/0xfd0 [i915]
Aug  2 19:54:22 svenBlack kernel: [25424.345879]  [<ffffffff813bf164>] ? timerqueue_del+0x24/0x70
Aug  2 19:54:22 svenBlack kernel: [25424.345884]  [<ffffffff810ce807>] handle_irq_event_percpu+0x77/0x1a0
Aug  2 19:54:22 svenBlack kernel: [25424.345886]  [<ffffffff810ce971>] handle_irq_event+0x41/0x70
Aug  2 19:54:22 svenBlack kernel: [25424.345888]  [<ffffffff810d19de>] handle_edge_irq+0x6e/0x120
Aug  2 19:54:22 svenBlack kernel: [25424.345890]  [<ffffffff81017772>] handle_irq+0x22/0x40
Aug  2 19:54:22 svenBlack kernel: [25424.345892]  [<ffffffff817ce55f>] do_IRQ+0x4f/0xf0
Aug  2 19:54:22 svenBlack kernel: [25424.345894]  [<ffffffff817cc36d>] common_interrupt+0x6d/0x6d
Aug  2 19:54:22 svenBlack kernel: [25424.345895]  <EOI>  [<ffffffff816663b5>] ? cpuidle_enter_state+0x65/0x160
Aug  2 19:54:22 svenBlack kernel: [25424.345899]  [<ffffffff816663a1>] ? cpuidle_enter_state+0x51/0x160
Aug  2 19:54:22 svenBlack kernel: [25424.345900]  [<ffffffff81666597>] cpuidle_enter+0x17/0x20
Aug  2 19:54:22 svenBlack kernel: [25424.345903]  [<ffffffff810b7ce1>] cpu_startup_entry+0x311/0x3b0
Aug  2 19:54:22 svenBlack kernel: [25424.345905]  [<ffffffff817b9077>] rest_init+0x77/0x80
Aug  2 19:54:22 svenBlack kernel: [25424.345908]  [<ffffffff81d4cfce>] start_kernel+0x482/0x48f
Aug  2 19:54:22 svenBlack kernel: [25424.345910]  [<ffffffff81d4c120>] ? early_idt_handlers+0x120/0x120
Aug  2 19:54:22 svenBlack kernel: [25424.345913]  [<ffffffff81d4c4d7>] x86_64_start_reservations+0x2a/0x2c
Aug  2 19:54:22 svenBlack kernel: [25424.345914]  [<ffffffff81d4c61c>] x86_64_start_kernel+0x143/0x152
Aug  2 19:54:22 svenBlack kernel: [25424.345916] ---[ end trace 739bb5ecea987899 ]---