i also get this two different Call Traces:


Nov 12 07:19:05 hansmackowiak kernel: [  400.988455] ------------[ cut here ]------------
Nov 12 07:19:05 hansmackowiak kernel: [  400.988483] WARNING: CPU: 0 PID: 1385 at /build/linux-jJX2Dm/linux-4.2.0/drivers/gpu/drm/i915/i915_gem.c:5269 i915_gem_track_fb+0x129/0x140 [i915]()
Nov 12 07:19:05 hansmackowiak kernel: [  400.988485] WARN_ON(!(old->frontbuffer_bits & frontbuffer_bits))
Nov 12 07:19:05 hansmackowiak kernel: [  400.988486] Modules linked in: drbg ansi_cprng pci_stub vboxpci(OE) vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) uas usb_storage binfmt_misc intel_rapl iosf_mbi x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm snd_hda_codec_hdmi crct10dif_pclmul crc32_pclmul snd_hda_codec_realtek snd_hda_codec_generic ghash_clmulni_intel joydev snd_hda_intel input_leds snd_hda_codec aesni_intel snd_hda_core aes_x86_64 snd_hwdep lrw gf128mul snd_pcm glue_helper snd_seq_midi ablk_helper snd_seq_midi_event snd_rawmidi cryptd snd_seq snd_seq_device serio_raw snd_timer snd shpchp lpc_ich soundcore mei_me mei cuse 8250_fintek soc_button_array tpm_infineon mac_hid parport_pc ppdev lp parport autofs4 hid_generic usbhid hid i915 i2c_algo_bit drm_kms_helper psmouse e1000e ahci drm libahci ptp pps_core video
Nov 12 07:19:05 hansmackowiak kernel: [  400.988538] CPU: 0 PID: 1385 Comm: Xorg Tainted: G        W  OE   4.2.0-18-generic #22-Ubuntu
Nov 12 07:19:05 hansmackowiak kernel: [  400.988540] Hardware name: Gigabyte Technology Co., Ltd. To be filled by O.E.M./Q87M-D2H, BIOS F7 01/17/2014
Nov 12 07:19:05 hansmackowiak kernel: [  400.988541]  0000000000000000 00000000db46ced3 ffff8800b522bac8 ffffffff817e8c09
Nov 12 07:19:05 hansmackowiak kernel: [  400.988545]  0000000000000000 ffff8800b522bb20 ffff8800b522bb08 ffffffff8107b3c6
Nov 12 07:19:05 hansmackowiak kernel: [  400.988548]  ffff880426193d80 0000000000000010 ffff880425adc000 ffff880425adc000
Nov 12 07:19:05 hansmackowiak kernel: [  400.988551] Call Trace:
Nov 12 07:19:05 hansmackowiak kernel: [  400.988557]  [<ffffffff817e8c09>] dump_stack+0x45/0x57
Nov 12 07:19:05 hansmackowiak kernel: [  400.988562]  [<ffffffff8107b3c6>] warn_slowpath_common+0x86/0xc0
Nov 12 07:19:05 hansmackowiak kernel: [  400.988565]  [<ffffffff8107b455>] warn_slowpath_fmt+0x55/0x70
Nov 12 07:19:05 hansmackowiak kernel: [  400.988581]  [<ffffffffc0194ec9>] i915_gem_track_fb+0x129/0x140 [i915]
Nov 12 07:19:05 hansmackowiak kernel: [  400.988602]  [<ffffffffc01dd367>] intel_prepare_plane_fb+0xe7/0x1a0 [i915]
Nov 12 07:19:05 hansmackowiak kernel: [  400.988610]  [<ffffffffc0139fa9>] drm_atomic_helper_prepare_planes+0x59/0xe0 [drm_kms_helper]
Nov 12 07:19:05 hansmackowiak kernel: [  400.988628]  [<ffffffffc00519d5>] ? drm_atomic_check_only+0x215/0x540 [drm]
Nov 12 07:19:05 hansmackowiak kernel: [  400.988648]  [<ffffffffc01ee022>] intel_atomic_commit+0x42/0x100 [i915]
Nov 12 07:19:05 hansmackowiak kernel: [  400.988663]  [<ffffffffc0051d37>] drm_atomic_commit+0x37/0x60 [drm]
Nov 12 07:19:05 hansmackowiak kernel: [  400.988669]  [<ffffffffc013b617>] drm_atomic_helper_plane_set_property+0x87/0xc0 [drm_kms_helper]
Nov 12 07:19:05 hansmackowiak kernel: [  400.988681]  [<ffffffffc003f759>] ? _object_find+0x69/0xa0 [drm]
Nov 12 07:19:05 hansmackowiak kernel: [  400.988692]  [<ffffffffc003ffdd>] drm_mode_plane_set_obj_prop+0x2d/0x90 [drm]
Nov 12 07:19:05 hansmackowiak kernel: [  400.988705]  [<ffffffffc0046a66>] drm_mode_obj_set_property_ioctl+0x1c6/0x270 [drm]
Nov 12 07:19:05 hansmackowiak kernel: [  400.988713]  [<ffffffffc0036495>] drm_ioctl+0x125/0x610 [drm]
Nov 12 07:19:05 hansmackowiak kernel: [  400.988716]  [<ffffffff8123e696>] ? fsnotify+0x316/0x4a0
Nov 12 07:19:05 hansmackowiak kernel: [  400.988727]  [<ffffffffc00468a0>] ? drm_mode_obj_get_properties_ioctl+0xa0/0xa0 [drm]
Nov 12 07:19:05 hansmackowiak kernel: [  400.988731]  [<ffffffff812108a5>] do_vfs_ioctl+0x295/0x480
Nov 12 07:19:05 hansmackowiak kernel: [  400.988735]  [<ffffffff811ff685>] ? __sb_end_write+0x35/0x70
Nov 12 07:19:05 hansmackowiak kernel: [  400.988737]  [<ffffffff811fd2ba>] ? vfs_write+0x15a/0x1a0
Nov 12 07:19:05 hansmackowiak kernel: [  400.988740]  [<ffffffff81210b09>] SyS_ioctl+0x79/0x90
Nov 12 07:19:05 hansmackowiak kernel: [  400.988744]  [<ffffffff817ef9f2>] entry_SYSCALL_64_fastpath+0x16/0x75
Nov 12 07:19:05 hansmackowiak kernel: [  400.988746] ---[ end trace d18362fc9e8307f9 ]---
Nov 12 07:19:05 hansmackowiak kernel: [  401.021783] [drm:intel_pipe_config_compare [i915]] *ERROR* mismatch in dpll_hw_state.wrpll (expected 0xb0210614, found 0x00000000)
Nov 12 07:19:05 hansmackowiak kernel: [  401.021787] ------------[ cut here ]------------
Nov 12 07:19:05 hansmackowiak kernel: [  401.021803] WARNING: CPU: 0 PID: 1385 at /build/linux-jJX2Dm/linux-4.2.0/drivers/gpu/drm/i915/intel_display.c:12326 check_crtc_state+0x2c5/0x440 [i915]()
Nov 12 07:19:05 hansmackowiak kernel: [  401.021804] pipe state doesn't match!
Nov 12 07:19:05 hansmackowiak kernel: [  401.021805] Modules linked in: drbg ansi_cprng pci_stub vboxpci(OE) vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) uas usb_storage binfmt_misc intel_rapl iosf_mbi x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm snd_hda_codec_hdmi crct10dif_pclmul crc32_pclmul snd_hda_codec_realtek snd_hda_codec_generic ghash_clmulni_intel joydev snd_hda_intel input_leds snd_hda_codec aesni_intel snd_hda_core aes_x86_64 snd_hwdep lrw gf128mul snd_pcm glue_helper snd_seq_midi ablk_helper snd_seq_midi_event snd_rawmidi cryptd snd_seq snd_seq_device serio_raw snd_timer snd shpchp lpc_ich soundcore mei_me mei cuse 8250_fintek soc_button_array tpm_infineon mac_hid parport_pc ppdev lp parport autofs4 hid_generic usbhid hid i915 i2c_algo_bit drm_kms_helper psmouse e1000e ahci drm libahci ptp pps_core video
Nov 12 07:19:05 hansmackowiak kernel: [  401.021842] CPU: 0 PID: 1385 Comm: Xorg Tainted: G        W  OE   4.2.0-18-generic #22-Ubuntu
Nov 12 07:19:05 hansmackowiak kernel: [  401.021844] Hardware name: Gigabyte Technology Co., Ltd. To be filled by O.E.M./Q87M-D2H, BIOS F7 01/17/2014
Nov 12 07:19:05 hansmackowiak kernel: [  401.021845]  0000000000000000 00000000db46ced3 ffff8800b522b7c8 ffffffff817e8c09
Nov 12 07:19:05 hansmackowiak kernel: [  401.021848]  0000000000000000 ffff8800b522b820 ffff8800b522b808 ffffffff8107b3c6
Nov 12 07:19:05 hansmackowiak kernel: [  401.021851]  ffff8800b522b848 ffff8800b522b8b0 ffff88042b9fb000 0000000000000001
Nov 12 07:19:05 hansmackowiak kernel: [  401.021853] Call Trace:
Nov 12 07:19:05 hansmackowiak kernel: [  401.021857]  [<ffffffff817e8c09>] dump_stack+0x45/0x57
Nov 12 07:19:05 hansmackowiak kernel: [  401.021860]  [<ffffffff8107b3c6>] warn_slowpath_common+0x86/0xc0
Nov 12 07:19:05 hansmackowiak kernel: [  401.021863]  [<ffffffff8107b455>] warn_slowpath_fmt+0x55/0x70
Nov 12 07:19:05 hansmackowiak kernel: [  401.021877]  [<ffffffffc01c7af7>] ? intel_pipe_config_compare+0xa67/0xc60 [i915]
Nov 12 07:19:05 hansmackowiak kernel: [  401.021889]  [<ffffffffc01c7fb5>] check_crtc_state+0x2c5/0x440 [i915]
Nov 12 07:19:05 hansmackowiak kernel: [  401.021906]  [<ffffffffc01dbd6d>] intel_modeset_check_state+0x21d/0x6d0 [i915]
Nov 12 07:19:05 hansmackowiak kernel: [  401.021919]  [<ffffffffc01dcf27>] intel_crtc_set_config+0x4c7/0x580 [i915]
Nov 12 07:19:05 hansmackowiak kernel: [  401.021931]  [<ffffffffc0047ee5>] ? drm_mode_create+0x25/0x60 [drm]
Nov 12 07:19:05 hansmackowiak kernel: [  401.021942]  [<ffffffffc00414c6>] drm_mode_set_config_internal+0x66/0x100 [drm]
Nov 12 07:19:05 hansmackowiak kernel: [  401.021953]  [<ffffffffc0045b29>] drm_mode_setcrtc+0x3e9/0x500 [drm]
Nov 12 07:19:05 hansmackowiak kernel: [  401.021974]  [<ffffffffc0036495>] drm_ioctl+0x125/0x610 [drm]
Nov 12 07:19:05 hansmackowiak kernel: [  401.021977]  [<ffffffff8123e696>] ? fsnotify+0x316/0x4a0
Nov 12 07:19:05 hansmackowiak kernel: [  401.021989]  [<ffffffffc0045740>] ? drm_mode_setplane+0x1b0/0x1b0 [drm]
Nov 12 07:19:05 hansmackowiak kernel: [  401.021997]  [<ffffffff812108a5>] do_vfs_ioctl+0x295/0x480
Nov 12 07:19:05 hansmackowiak kernel: [  401.022006]  [<ffffffff811ff685>] ? __sb_end_write+0x35/0x70
Nov 12 07:19:05 hansmackowiak kernel: [  401.022011]  [<ffffffff811fd2ba>] ? vfs_write+0x15a/0x1a0
Nov 12 07:19:05 hansmackowiak kernel: [  401.022015]  [<ffffffff81210b09>] SyS_ioctl+0x79/0x90
Nov 12 07:19:05 hansmackowiak kernel: [  401.022021]  [<ffffffff817ef9f2>] entry_SYSCALL_64_fastpath+0x16/0x75
Nov 12 07:19:05 hansmackowiak kernel: [  401.022025] ---[ end trace d18362fc9e8307fa ]---