I just booted with 4.3.0-040300rc2-generic and there is still one kernel crash and some i915 errors: [ 12.072417] ------------[ cut here ]------------ [ 12.072443] WARNING: CPU: 2 PID: 173 at /home/kernel/COD/linux/drivers/gpu/drm/i915/intel_display.c:1056 intel_disable_pipe+0x2a2/0x2d0 [i915]() [ 12.072444] pipe_off wait timed out [ 12.072462] Modules linked in: crct10dif_pclmul nf_conntrack crc32_pclmul ghash_clmulni_intel iptable_filter ip_tables aesni_intel x_tables aes_x86_64 hp_wmi lrw gf128mul sparse_keymap glue_helper ablk_helper cryptd snd_hda_intel(+) snd_hda_codec snd_hda_core snd_hwdep snd_pcm snd_seq_midi i915(+) snd_seq_midi_event snd_rawmidi snd_seq snd_seq_device ppdev coretemp snd_timer drm_kms_helper snd drm soundcore lp parport_pc serio_raw wmi 8250_fintek ie31200_edac input_leds parport i2c_algo_bit lpc_ich tpm_infineon fb_sys_fops mei_me syscopyarea sysfillrect sysimgblt video mei mac_hid edac_core hid_generic usbhid hid psmouse e1000e ahci r8169 libahci ptp mii pps_core fjes [ 12.072463] CPU: 2 PID: 173 Comm: kworker/u8:5 Not tainted 4.3.0-040300rc2-generic #201509201830 [ 12.072464] Hardware name: Hewlett-Packard HP Compaq Pro 6300 MT/339A, BIOS K01 v02.98 03/18/2015 [ 12.072467] Workqueue: events_unbound async_run_entry_fn [ 12.072469] ffffffffc037dd08 ffff88003640b830 ffffffff813a5f9d ffff88003640b878 [ 12.072470] ffff88003640b868 ffffffff8107a566 ffff88020d060000 0000000000071008 [ 12.072470] 00000000fffee6ce 0000000000071008 ffff880036b25000 ffff88003640b8c8 [ 12.072471] Call Trace: [ 12.072476] [] dump_stack+0x44/0x57 [ 12.072477] [] warn_slowpath_common+0x86/0xc0 [ 12.072478] [] warn_slowpath_fmt+0x4c/0x50 [ 12.072494] [] intel_disable_pipe+0x2a2/0x2d0 [i915] [ 12.072509] [] ironlake_crtc_disable+0x85/0x7c0 [i915] [ 12.072522] [] ? intel_crtc_disable_planes+0xdc/0xf0 [i915] [ 12.072535] [] intel_atomic_commit+0xf5/0x5f0 [i915] [ 12.072547] [] ? drm_atomic_get_connector_state+0x49/0x130 [drm] [ 12.072554] [] drm_atomic_commit+0x37/0x60 [drm] [ 12.072559] [] drm_atomic_helper_set_config+0x38e/0x400 [drm_kms_helper] [ 12.072566] [] drm_mode_set_config_internal+0x64/0x100 [drm] [ 12.072570] [] restore_fbdev_mode+0xbe/0xe0 [drm_kms_helper] [ 12.072573] [] drm_fb_helper_restore_fbdev_mode_unlocked+0x25/0x70 [drm_kms_helper] [ 12.072576] [] drm_fb_helper_set_par+0x2c/0x50 [drm_kms_helper] [ 12.072591] [] intel_fbdev_set_par+0x1a/0x60 [i915] [ 12.072593] [] fbcon_init+0x4c6/0x550 [ 12.072596] [] visual_init+0xca/0x130 [ 12.072597] [] do_bind_con_driver+0x146/0x310 [ 12.072598] [] do_take_over_console+0x141/0x1b0 [ 12.072600] [] do_fbcon_takeover+0x57/0xb0 [ 12.072600] [] fbcon_event_notify+0x60b/0x750 [ 12.072602] [] notifier_call_chain+0x49/0x70 [ 12.072603] [] __blocking_notifier_call_chain+0x4d/0x70 [ 12.072604] [] blocking_notifier_call_chain+0x16/0x20 [ 12.072605] [] fb_notifier_call_chain+0x1b/0x20 [ 12.072606] [] register_framebuffer+0x1de/0x300 [ 12.072609] [] drm_fb_helper_initial_config+0x252/0x390 [drm_kms_helper] [ 12.072624] [] intel_fbdev_initial_config+0x1b/0x20 [i915] [ 12.072625] [] async_run_entry_fn+0x48/0x150 [ 12.072626] [] process_one_work+0x14e/0x3d0 [ 12.072627] [] worker_thread+0x11a/0x470 [ 12.072628] [] ? rescuer_thread+0x310/0x310 [ 12.072630] [] kthread+0xc9/0xe0 [ 12.072631] [] ? kthread_park+0x60/0x60 [ 12.072632] [] ret_from_fork+0x3f/0x70 [ 12.072634] [] ? kthread_park+0x60/0x60 [ 12.072634] ---[ end trace d79f76ace2b092d5 ]--- [ 12.136497] [drm:ironlake_crtc_disable [i915]] *ERROR* failed to disable transcoder B [ 12.139041] [drm:intel_set_pch_fifo_underrun_reporting [i915]] *ERROR* uncleared pch fifo underrun on pch transcoder A [ 12.139057] [drm:intel_pch_fifo_underrun_irq_handler [i915]] *ERROR* PCH transcoder A FIFO underrun [ 12.139077] [drm:intel_set_pch_fifo_underrun_reporting [i915]] *ERROR* uncleared pch fifo underrun on pch transcoder B [ 12.139091] [drm:intel_pch_fifo_underrun_irq_handler [i915]] *ERROR* PCH transcoder B FIFO underrun