My laptop:
Memory: 7.6
Processot: Intel® Core™ i7-6820HQ CPU @ 2.70GHz × 8
Graphics : Intel® Skylake Halo GT2 x86/MMX/SSE2
OS type: 32-bit
Disk : 968.5 GB
May 23 17:54:57 sasha-Latitude-E5470 kernel: [28696.006936] ------------[ cut here ]------------
May 23 17:54:57 sasha-Latitude-E5470 kernel: [28696.006967] WARNING: CPU: 7 PID: 15120 at /build/linux-lts-wily-aYEFeP/linux-lts-wily-4.2.0/drivers/gpu/drm/i915/intel_pm.c:3404 skl_update_other_pipe_wm+0x184/0x190 [i915]()
May 23 17:54:57 sasha-Latitude-E5470 kernel: [28696.006969] WARN_ON(!wm_changed)
May 23 17:54:57 sasha-Latitude-E5470 kernel: [28696.006970] Modules linked in: snd_seq_dummy binfmt_misc rfcomm bnep arc4 iwlmvm mac80211 snd_hda_codec_hdmi dell_led snd_hda_codec_realtek snd_hda_codec_generic pl2303 usbserial uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core v4l2_common videodev dell_wmi sparse_keymap media dell_laptop dcdbas intel_rapl dell_smm_hwmon x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel snd_hda_intel iwlwifi snd_hda_codec kvm snd_hda_core snd_hwdep cfg80211 rtsx_pci_ms snd_pcm memstick crc32_pclmul snd_seq_midi snd_seq_midi_event aesni_intel snd_rawmidi aes_i586 xts lrw snd_seq gf128mul i915 ablk_helper cryptd joydev snd_seq_device input_leds snd_timer serio_raw snd btusb btrtl soundcore btbcm shpchp btintel drm_kms_helper bluetooth drm mei_me mei processor_thermal_device i2c_algo_bit intel_soc_dts_iosf int3403_thermal 8250_fintek int340x_thermal_zone intel_lpss_acpi dell_smo8800 video i2c_hid intel_lpss pinctrl_sunrisepoint int3400_thermal wmi pinctrl_intel acpi_als acpi_thermal_rel dell_rbtn acpi_pad kfifo_buf parport_pc mac_hid industrialio ppdev lp parport hid_generic usbhid hid rtsx_pci_sdmmc e1000e psmouse ptp ahci rtsx_pci pps_core libahci
May 23 17:54:57 sasha-Latitude-E5470 kernel: [28696.007060] CPU: 7 PID: 15120 Comm: Xorg Tainted: G W 4.2.0-36-generic #42~14.04.1-Ubuntu
May 23 17:54:57 sasha-Latitude-E5470 kernel: [28696.007062] Hardware name: Dell Inc. Latitude E5470/06DNG5, BIOS 1.3.6 01/10/2016
May 23 17:54:57 sasha-Latitude-E5470 kernel: [28696.007064] 00000000 00000000 dd42d8f4 c1710935 dd42d934 f9492848 00000d4c dd42d924
May 23 17:54:57 sasha-Latitude-E5470 kernel: [28696.007069] c1067a97 f94a4aef dd42d950 00003b10 f9492848 00000d4c f93dfd04 f93dfd04
May 23 17:54:57 sasha-Latitude-E5470 kernel: [28696.007074] f647a000 f647b000 dd42dab4 dd42d93c c1067b03 00000009 dd42d934 f94a4aef
May 23 17:54:57 sasha-Latitude-E5470 kernel: [28696.007079] Call Trace:
May 23 17:54:57 sasha-Latitude-E5470 kernel: [28696.007086] [<c1710935>] dump_stack+0x59/0x74
May 23 17:54:57 sasha-Latitude-E5470 kernel: [28696.007090] [<c1067a97>] warn_slowpath_common+0x87/0xc0
May 23 17:54:57 sasha-Latitude-E5470 kernel: [28696.007110] [<f93dfd04>] ? skl_update_other_pipe_wm+0x184/0x190 [i915]
May 23 17:54:57 sasha-Latitude-E5470 kernel: [28696.007129] [<f93dfd04>] ? skl_update_other_pipe_wm+0x184/0x190 [i915]
May 23 17:54:57 sasha-Latitude-E5470 kernel: [28696.007132] [<c1067b03>] warn_slowpath_fmt+0x33/0x40
May 23 17:54:57 sasha-Latitude-E5470 kernel: [28696.007151] [<f93dfd04>] skl_update_other_pipe_wm+0x184/0x190 [i915]
May 23 17:54:57 sasha-Latitude-E5470 kernel: [28696.007171] [<f93dfee4>] skl_update_wm+0x1d4/0x790 [i915]
May 23 17:54:57 sasha-Latitude-E5470 kernel: [28696.007176] [<c10c611d>] ? ns_to_timeval+0x1d/0x40
May 23 17:54:57 sasha-Latitude-E5470 kernel: [28696.007192] [<f94d9d7a>] ? drm_calc_vbltimestamp_from_scanoutpos+0x13a/0x2e0 [drm]
May 23 17:54:57 sasha-Latitude-E5470 kernel: [28696.007213] [<f93e0e79>] intel_update_watermarks+0x19/0x20 [i915]
May 23 17:54:57 sasha-Latitude-E5470 kernel: [28696.007243] [<f943fadf>] intel_finish_crtc_commit+0x16f/0x1d0 [i915]
May 23 17:54:57 sasha-Latitude-E5470 kernel: [28696.007273] [<f942f8bf>] ? intel_commit_cursor_plane+0x6f/0xa0 [i915]
May 23 17:54:57 sasha-Latitude-E5470 kernel: [28696.007283] [<f95997d5>] drm_atomic_helper_commit_planes_on_crtc+0x115/0x1a0 [drm_kms_helper]
May 23 17:54:57 sasha-Latitude-E5470 kernel: [28696.007314] [<f9457e9f>] intel_atomic_commit+0x5f/0xf0 [i915]
May 23 17:54:57 sasha-Latitude-E5470 kernel: [28696.007336] [<f94f2932>] drm_atomic_commit+0x32/0x60 [drm]
May 23 17:54:57 sasha-Latitude-E5470 kernel: [28696.007345] [<f959839e>] drm_atomic_helper_disable_plane+0xce/0x120 [drm_kms_helper]
May 23 17:54:57 sasha-Latitude-E5470 kernel: [28696.007363] [<f94e351e>] __setplane_internal+0x15e/0x2e0 [drm]
May 23 17:54:57 sasha-Latitude-E5470 kernel: [28696.007383] [<f94f18d0>] ? drm_modeset_lock+0x30/0xf0 [drm]
May 23 17:54:57 sasha-Latitude-E5470 kernel: [28696.007402] [<f94f1cd1>] ? drm_modeset_lock_crtc+0x81/0xe0 [drm]
May 23 17:54:57 sasha-Latitude-E5470 kernel: [28696.007419] [<f94e3a11>] drm_mode_cursor_common+0x151/0x360 [drm]
May 23 17:54:57 sasha-Latitude-E5470 kernel: [28696.007437] [<f94e77d0>] ? drm_mode_setcrtc+0x550/0x550 [drm]
May 23 17:54:57 sasha-Latitude-E5470 kernel: [28696.007453] [<f94e781b>] drm_mode_cursor_ioctl+0x4b/0x60 [drm]
May 23 17:54:57 sasha-Latitude-E5470 kernel: [28696.007467] [<f94d9062>] drm_ioctl+0x302/0x560 [drm]
May 23 17:54:57 sasha-Latitude-E5470 kernel: [28696.007481] [<f94e77d0>] ? drm_mode_setcrtc+0x550/0x550 [drm]
May 23 17:54:57 sasha-Latitude-E5470 kernel: [28696.007486] [<c13557ab>] ? lockref_put_or_lock+0xb/0x40
May 23 17:54:57 sasha-Latitude-E5470 kernel: [28696.007490] [<c11ea5e6>] ? __fsnotify_parent+0x96/0xf0
May 23 17:54:57 sasha-Latitude-E5470 kernel: [28696.007504] [<f94d8d60>] ? drm_getmap+0xb0/0xb0 [drm]
May 23 17:54:57 sasha-Latitude-E5470 kernel: [28696.007507] [<c11c222a>] do_vfs_ioctl+0x30a/0x540
May 23 17:54:57 sasha-Latitude-E5470 kernel: [28696.007511] [<c10728f7>] ? recalc_sigpending+0x17/0x50
May 23 17:54:57 sasha-Latitude-E5470 kernel: [28696.007513] [<c1073651>] ? __set_task_blocked+0x31/0x80
May 23 17:54:57 sasha-Latitude-E5470 kernel: [28696.007516] [<c11c24c0>] SyS_ioctl+0x60/0x90
May 23 17:54:57 sasha-Latitude-E5470 kernel: [28696.007520] [<c171705f>] sysenter_do_call+0x12/0x12
May 23 17:54:57 sasha-Latitude-E5470 kernel: [28696.007523] ---[ end trace 66ffdfd56574ec52 ]---
May 23 17:56:08 sasha-Latitude-E5470 kernel: [28766.701067] ------------[ cut here ]------------
May 23 17:56:08 sasha-Latitude-E5470 kernel: [28766.701101] WARNING: CPU: 7 PID: 15120 at /build/linux-lts-wily-aYEFeP/linux-lts-wily-4.2.0/drivers/gpu/drm/i915/intel_pm.c:3404 skl_update_other_pipe_wm+0x184/0x190 [i915]()
May 23 17:56:08 sasha-Latitude-E5470 kernel: [28766.701103] WARN_ON(!wm_changed)
May 23 17:56:08 sasha-Latitude-E5470 kernel: [28766.701104] Modules linked in: snd_seq_dummy binfmt_misc rfcomm bnep arc4 iwlmvm mac80211 snd_hda_codec_hdmi dell_led snd_hda_codec_realtek snd_hda_codec_generic pl2303 usbserial uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core v4l2_common videodev dell_wmi sparse_keymap media dell_laptop dcdbas intel_rapl dell_smm_hwmon x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel snd_hda_intel iwlwifi snd_hda_codec kvm snd_hda_core snd_hwdep cfg80211 rtsx_pci_ms snd_pcm memstick crc32_pclmul snd_seq_midi snd_seq_midi_event aesni_intel snd_rawmidi aes_i586 xts lrw snd_seq gf128mul i915 ablk_helper cryptd joydev snd_seq_device input_leds snd_timer serio_raw snd btusb btrtl soundcore btbcm shpchp btintel drm_kms_helper bluetooth drm mei_me mei processor_thermal_device i2c_algo_bit intel_soc_dts_iosf int3403_thermal 8250_fintek int340x_thermal_zone intel_lpss_acpi dell_smo8800 video i2c_hid intel_lpss pinctrl_sunrisepoint int3400_thermal wmi pinctrl_intel acpi_als acpi_thermal_rel dell_rbtn acpi_pad kfifo_buf parport_pc mac_hid industrialio ppdev lp parport hid_generic usbhid hid rtsx_pci_sdmmc e1000e psmouse ptp ahci rtsx_pci pps_core libahci
May 23 17:56:08 sasha-Latitude-E5470 kernel: [28766.701155] CPU: 7 PID: 15120 Comm: Xorg Tainted: G W 4.2.0-36-generic #42~14.04.1-Ubuntu
May 23 17:56:08 sasha-Latitude-E5470 kernel: [28766.701157] Hardware name: Dell Inc. Latitude E5470/06DNG5, BIOS 1.3.6 01/10/2016
May 23 17:56:08 sasha-Latitude-E5470 kernel: [28766.701159] 00000000 00000000 dd42d8f4 c1710935 dd42d934 f9492848 00000d4c dd42d924
May 23 17:56:08 sasha-Latitude-E5470 kernel: [28766.701163] c1067a97 f94a4aef dd42d950 00003b10 f9492848 00000d4c f93dfd04 f93dfd04
May 23 17:56:08 sasha-Latitude-E5470 kernel: [28766.701166] f647b000 f647a000 dd42dab4 dd42d93c c1067b03 00000009 dd42d934 f94a4aef
May 23 17:56:08 sasha-Latitude-E5470 kernel: [28766.701169] Call Trace:
May 23 17:56:08 sasha-Latitude-E5470 kernel: [28766.701173] [<c1710935>] dump_stack+0x59/0x74
May 23 17:56:08 sasha-Latitude-E5470 kernel: [28766.701176] [<c1067a97>] warn_slowpath_common+0x87/0xc0
May 23 17:56:08 sasha-Latitude-E5470 kernel: [28766.701188] [<f93dfd04>] ? skl_update_other_pipe_wm+0x184/0x190 [i915]
May 23 17:56:08 sasha-Latitude-E5470 kernel: [28766.701199] [<f93dfd04>] ? skl_update_other_pipe_wm+0x184/0x190 [i915]
May 23 17:56:08 sasha-Latitude-E5470 kernel: [28766.701201] [<c1067b03>] warn_slowpath_fmt+0x33/0x40
May 23 17:56:08 sasha-Latitude-E5470 kernel: [28766.701212] [<f93dfd04>] skl_update_other_pipe_wm+0x184/0x190 [i915]
May 23 17:56:08 sasha-Latitude-E5470 kernel: [28766.701224] [<f93dfee4>] skl_update_wm+0x1d4/0x790 [i915]
May 23 17:56:08 sasha-Latitude-E5470 kernel: [28766.701227] [<c10c611d>] ? ns_to_timeval+0x1d/0x40
May 23 17:56:08 sasha-Latitude-E5470 kernel: [28766.701238] [<f94d9d7a>] ? drm_calc_vbltimestamp_from_scanoutpos+0x13a/0x2e0 [drm]
May 23 17:56:08 sasha-Latitude-E5470 kernel: [28766.701250] [<f93e0e79>] intel_update_watermarks+0x19/0x20 [i915]
May 23 17:56:08 sasha-Latitude-E5470 kernel: [28766.701268] [<f943fadf>] intel_finish_crtc_commit+0x16f/0x1d0 [i915]
May 23 17:56:08 sasha-Latitude-E5470 kernel: [28766.701285] [<f942f8bf>] ? intel_commit_cursor_plane+0x6f/0xa0 [i915]
May 23 17:56:08 sasha-Latitude-E5470 kernel: [28766.701292] [<f95997d5>] drm_atomic_helper_commit_planes_on_crtc+0x115/0x1a0 [drm_kms_helper]
May 23 17:56:08 sasha-Latitude-E5470 kernel: [28766.701310] [<f9457e9f>] intel_atomic_commit+0x5f/0xf0 [i915]
May 23 17:56:08 sasha-Latitude-E5470 kernel: [28766.701323] [<f94f2932>] drm_atomic_commit+0x32/0x60 [drm]
May 23 17:56:08 sasha-Latitude-E5470 kernel: [28766.701328] [<f959839e>] drm_atomic_helper_disable_plane+0xce/0x120 [drm_kms_helper]
May 23 17:56:08 sasha-Latitude-E5470 kernel: [28766.701339] [<f94e351e>] __setplane_internal+0x15e/0x2e0 [drm]
May 23 17:56:08 sasha-Latitude-E5470 kernel: [28766.701351] [<f94f18d0>] ? drm_modeset_lock+0x30/0xf0 [drm]
May 23 17:56:08 sasha-Latitude-E5470 kernel: [28766.701362] [<f94f1cd1>] ? drm_modeset_lock_crtc+0x81/0xe0 [drm]
May 23 17:56:08 sasha-Latitude-E5470 kernel: [28766.701372] [<f94e3a11>] drm_mode_cursor_common+0x151/0x360 [drm]
May 23 17:56:08 sasha-Latitude-E5470 kernel: [28766.701384] [<f94e77d0>] ? drm_mode_setcrtc+0x550/0x550 [drm]
May 23 17:56:08 sasha-Latitude-E5470 kernel: [28766.701392] [<f94e781b>] drm_mode_cursor_ioctl+0x4b/0x60 [drm]
May 23 17:56:08 sasha-Latitude-E5470 kernel: [28766.701401] [<f94d9062>] drm_ioctl+0x302/0x560 [drm]
May 23 17:56:08 sasha-Latitude-E5470 kernel: [28766.701409] [<f94e77d0>] ? drm_mode_setcrtc+0x550/0x550 [drm]
May 23 17:56:08 sasha-Latitude-E5470 kernel: [28766.701412] [<c13557ab>] ? lockref_put_or_lock+0xb/0x40
May 23 17:56:08 sasha-Latitude-E5470 kernel: [28766.701415] [<c11ea5e6>] ? __fsnotify_parent+0x96/0xf0
May 23 17:56:08 sasha-Latitude-E5470 kernel: [28766.701423] [<f94d8d60>] ? drm_getmap+0xb0/0xb0 [drm]
May 23 17:56:08 sasha-Latitude-E5470 kernel: [28766.701425] [<c11c222a>] do_vfs_ioctl+0x30a/0x540
May 23 17:56:08 sasha-Latitude-E5470 kernel: [28766.701427] [<c10728f7>] ? recalc_sigpending+0x17/0x50
May 23 17:56:08 sasha-Latitude-E5470 kernel: [28766.701428] [<c1073651>] ? __set_task_blocked+0x31/0x80
May 23 17:56:08 sasha-Latitude-E5470 kernel: [28766.701430] [<c11c24c0>] SyS_ioctl+0x60/0x90
May 23 17:56:08 sasha-Latitude-E5470 kernel: [28766.701432] [<c171705f>] sysenter_do_call+0x12/0x12
May 23 17:56:08 sasha-Latitude-E5470 kernel: [28766.701434] ---[ end trace 66ffdfd56574ec53 ]---
