The above snipped was for 4.2.0rc8, the one below is from 4.2.0 (release) --- [ 25.866954] ------------[ cut here ]------------ [ 25.866970] WARNING: CPU: 2 PID: 1030 at /home/kernel/COD/linux/drivers/gpu/drm/i915/intel_display.c:1362 assert_plane.constprop.94+0x73/0xa0 [i915]() [ 25.866971] plane A assertion failure (expected on, current off) [ 25.866991] Modules linked in: xt_CHECKSUM iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_nat_ipv4 nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack ipt_REJECT nf_reject_ipv4 xt_tcpudp bridge stp llc ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter ip_tables x_tables cmac rfcomm bnep uas nls_iso8859_1 usb_storage input_leds joydev uvcvideo videobuf2_vmalloc hid_generic videobuf2_memops videobuf2_core v4l2_common videodev btusb snd_usb_audio btrtl usbhid btbcm media snd_usbmidi_lib btintel bluetooth arc4 intel_rapl iosf_mbi x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm iwlmvm crct10dif_pclmul mac80211 crc32_pclmul ghash_clmulni_intel snd_hda_codec_realtek snd_hda_codec_hdmi snd_soc_rt5640 snd_hda_codec_generic aesni_intel snd_soc_rl6231 [ 25.867011] snd_soc_core aes_x86_64 lrw snd_compress iwlwifi ac97_bus gf128mul snd_pcm_dmaengine glue_helper ablk_helper snd_hda_intel snd_seq_midi cryptd snd_hda_codec snd_seq_midi_event snd_hda_core snd_hwdep cfg80211 serio_raw snd_pcm lpc_ich mei_me shpchp snd_rawmidi mei snd_seq snd_seq_device snd_timer nuvoton_cir rc_core snd i2c_hid hid dw_dmac dw_dmac_core snd_soc_sst_acpi soundcore i2c_designware_platform acpi_als 8250_dw i2c_designware_core kfifo_buf spi_pxa2xx_platform acpi_pad industrialio mac_hid parport_pc ppdev lp parport sunrpc autofs4 raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq raid1 raid0 multipath linear i915 i2c_algo_bit psmouse drm_kms_helper e1000e drm ahci libahci ptp pps_core sdhci_acpi video sdhci [ 25.867012] CPU: 2 PID: 1030 Comm: Xorg Not tainted 4.2.0-040200-generic #201508301530 [ 25.867013] Hardware name: \xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff \xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff\xffffffff/NUC5i7RYB, BIOS RYBDWi35.86A.0246.2015.0309.1355 03/09/2015 [ 25.867014] ffffffffc025bc48 ffff880408f237b8 ffffffff817a1b43 0000000000000001 [ 25.867015] ffff880408f23808 ffff880408f237f8 ffffffff8107719a ffff880035e00000 [ 25.867016] 0000000000000000 ffff880035e00000 ffff88040c393800 ffff88040c393860 [ 25.867016] Call Trace: [ 25.867020] [] dump_stack+0x45/0x57 [ 25.867022] [] warn_slowpath_common+0x8a/0xc0 [ 25.867023] [] warn_slowpath_fmt+0x46/0x50 [ 25.867034] [] assert_plane.constprop.94+0x73/0xa0 [i915] [ 25.867043] [] hsw_disable_ips+0x41/0x180 [i915] [ 25.867051] [] intel_pre_disable_primary+0x5d/0x90 [i915] [ 25.867059] [] intel_crtc_disable_planes+0x48/0x110 [i915] [ 25.867067] [] __intel_set_mode+0x251/0xb10 [i915] [ 25.867075] [] ? intel_modeset_compute_config+0x362/0xb60 [i915] [ 25.867083] [] intel_crtc_set_config+0x366/0x5a0 [i915] [ 25.867092] [] drm_mode_set_config_internal+0x68/0x100 [drm] [ 25.867095] [] restore_fbdev_mode+0xc2/0xf0 [drm_kms_helper] [ 25.867098] [] drm_fb_helper_restore_fbdev_mode_unlocked+0x29/0x70 [drm_kms_helper] [ 25.867101] [] drm_fb_helper_set_par+0x22/0x40 [drm_kms_helper] [ 25.867109] [] intel_fbdev_set_par+0x1a/0x60 [i915] [ 25.867112] [] ? jbd2_journal_dirty_metadata+0xb6/0x250 [ 25.867114] [] fb_set_var+0x191/0x400 [ 25.867115] [] ? __ext4_handle_dirty_metadata+0x81/0x210 [ 25.867117] [] fbcon_blank+0x1bc/0x2b0 [ 25.867119] [] do_unblank_screen+0xb8/0x1c0 [ 25.867121] [] vt_ioctl+0x1063/0x10e0 [ 25.867123] [] ? __slab_free+0x104/0x25c [ 25.867125] [] tty_ioctl+0x1f7/0xbe0 [ 25.867127] [] ? kzfree+0x31/0x40 [ 25.867128] [] ? kfree+0xf8/0x130 [ 25.867130] [] do_vfs_ioctl+0x2cd/0x4b0 [ 25.867131] [] ? mntput+0x24/0x40 [ 25.867133] [] ? __fput+0x190/0x210 [ 25.867134] [] SyS_ioctl+0x79/0x90 [ 25.867135] [] entry_SYSCALL_64_fastpath+0x16/0x75 [ 25.867136] ---[ end trace c6b6cf80ff58f9ce ]--- ---