FYI, we noticed the below changes on git://anongit.freedesktop.org/drm-intel drm-intel-next commit 043e9bda6b7bf6ff83576c65a40becc5054e827d ("drm/i915: Convert resume to atomic.") [ 13.600701] input: PC Speaker as /devices/platform/pcspkr/input/input10 [ 13.601162] Console: switching to colour dummy device 80x25 [ 13.607517] microcode: CPU0 sig=0x20652, pf=0x10, revision=0x9 [ 13.609912] BUG: scheduling while atomic: systemd-udevd/149/0x00000002 [ 13.609947] Modules linked in: microcode(+) serio_raw(+) firewire_ohci(+) pcspkr(+) intel_ips(+) snd_hda_intel(+) ahci(+) sdhci_pci libahci i2c_i801 sdhci snd_hda_controller libata firewire_core i915(+) uvcvideo videobuf2_vmalloc videobuf2_core mmc_core videobuf2_memops v4l2_common videodev snd_hda_codec snd_hda_core snd_hwdep drm_kms_helper snd_pcm crc_itu_t shpchp snd_timer drm thinkpad_acpi snd soundcore rfkill parport_pc parport wmi video acpi_cpufreq [ 13.609952] CPU: 1 PID: 149 Comm: systemd-udevd Not tainted 4.1.0-rc6-01269-g043e9bd #1 [ 13.609954] Hardware name: LENOVO 25222AU/25222AU, BIOS 6IET52WW (1.12 ) 02/16/2010 [ 13.609958] 0000000000017d40 ffff880076def728 ffffffff818e4f79 0000000049964996 [ 13.609962] ffff880067097d40 ffff880076def738 ffffffff8109c01d ffff880076def788 [ 13.609965] ffffffff818e80fa ffff8800645f25b0 ffff880076dc3b20 ffff8800645f25b0 [ 13.609966] Call Trace: [ 13.609977] [<ffffffff818e4f79>] dump_stack+0x4c/0x65 [ 13.609984] [<ffffffff8109c01d>] __schedule_bug+0x4d/0x60 [ 13.609988] [<ffffffff818e80fa>] __schedule+0x6da/0xa10 [ 13.609993] [<ffffffff818e8467>] schedule+0x37/0x90 [ 13.609997] [<ffffffff818ebb59>] schedule_timeout+0x139/0x280 [ 13.610004] [<ffffffff810e1d00>] ? internal_add_timer+0xb0/0xb0 [ 13.610071] [<ffffffffa0263840>] ? gen5_read64+0xb0/0xb0 [i915] [ 13.610079] [<ffffffff810e385b>] msleep+0x4b/0x60 [ 13.610123] [<ffffffffa021d182>] intel_disable_gt_powersave+0x232/0x2d0 [i915] [ 13.610175] [<ffffffffa0269a8e>] intel_uncore_sanitize+0xe/0x10 [i915] [ 13.610238] [<ffffffffa02c64d9>] i915_driver_load+0x499/0xec0 [i915] [ 13.610243] [<ffffffff817d6d5b>] ? netlink_broadcast_filtered+0x12b/0x380 [ 13.610249] [<ffffffff81419780>] ? cleanup_uevent_env+0x10/0x10 [ 13.610252] [<ffffffff81419b18>] ? kobject_uevent_env+0x178/0x690 [ 13.610256] [<ffffffff81571f90>] ? devtmpfs_create_node+0x100/0x130 [ 13.610260] [<ffffffff81566767>] ? get_device+0x17/0x30 [ 13.610264] [<ffffffff8156c525>] ? klist_class_dev_get+0x15/0x20 [ 13.610269] [<ffffffff818d7b8a>] ? klist_add_tail+0x3a/0x40 [ 13.610272] [<ffffffff815680fa>] ? device_add+0x22a/0x6a0 [ 13.610302] [<ffffffffa00ab7c5>] drm_dev_register+0xb5/0x110 [drm] [ 13.610322] [<ffffffffa00ae7fd>] drm_get_pci_dev+0x8d/0x200 [drm] [ 13.610362] [<ffffffffa020e27b>] i915_pci_probe+0x3b/0x60 [i915] [ 13.610366] [<ffffffff8145fe85>] local_pci_probe+0x45/0xa0 [ 13.610369] [<ffffffff814611f5>] ? pci_match_device+0xe5/0x110 [ 13.610373] [<ffffffff81461331>] pci_device_probe+0xd1/0x120 [ 13.610378] [<ffffffff8156b669>] driver_probe_device+0x209/0x4b0 [ 13.610381] [<ffffffff8156b9eb>] __driver_attach+0x9b/0xa0 [ 13.610384] [<ffffffff8156b950>] ? __device_attach+0x40/0x40 [ 13.610388] [<ffffffff8156928b>] bus_for_each_dev+0x6b/0xb0 [ 13.610391] [<ffffffff8156af3e>] driver_attach+0x1e/0x20 [ 13.610394] [<ffffffff8156ab00>] bus_add_driver+0x180/0x250 [ 13.610398] [<ffffffff8156c1f4>] driver_register+0x64/0xf0 [ 13.610401] [<ffffffff8145f6cc>] __pci_register_driver+0x4c/0x50 [ 13.610421] [<ffffffffa00aea6a>] drm_pci_init+0xfa/0x130 [drm] [ 13.610425] [<ffffffffa0347000>] ? 0xffffffffa0347000 [ 13.610462] [<ffffffffa03470b0>] i915_init+0xb0/0xb8 [i915] [ 13.610467] [<ffffffff81002130>] do_one_initcall+0xc0/0x1f0 [ 13.610474] [<ffffffff811cde3c>] ? kmem_cache_alloc_trace+0x1cc/0x240 [ 13.610478] [<ffffffff818e1bc6>] ? do_init_module+0x28/0x1cc [ 13.610482] [<ffffffff818e1bff>] do_init_module+0x61/0x1cc [ 13.610486] [<ffffffff811007a2>] load_module+0x2142/0x2520 [ 13.610490] [<ffffffff810fc140>] ? store_uevent+0x40/0x40 [ 13.610496] [<ffffffff81100d96>] SyS_finit_module+0x86/0xb0 [ 13.610500] [<ffffffff818ed36e>] system_call_fastpath+0x12/0x71 [ 13.613186] BUG: scheduling while atomic: systemd-udevd/149/0x00000002 [ 13.613216] Modules linked in: microcode(+) serio_raw(+) firewire_ohci(+) pcspkr(+) intel_ips(+) snd_hda_intel(+) ahci(+) sdhci_pci libahci i2c_i801 sdhci snd_hda_controller libata firewire_core i915(+) uvcvideo videobuf2_vmalloc videobuf2_core mmc_core videobuf2_memops v4l2_common videodev snd_hda_codec snd_hda_core snd_hwdep drm_kms_helper snd_pcm crc_itu_t shpchp snd_timer drm thinkpad_acpi snd soundcore rfkill parport_pc parport wmi video acpi_cpufreq [ 13.613219] CPU: 1 PID: 149 Comm: systemd-udevd Tainted: G W 4.1.0-rc6-01269-g043e9bd #1 [ 13.613221] Hardware name: LENOVO 25222AU/25222AU, BIOS 6IET52WW (1.12 ) 02/16/2010 [ 13.613225] 0000000000017d40 ffff880076def728 ffffffff818e4f79 000000004a684a68 [ 13.613228] ffff880067097d40 ffff880076def738 ffffffff8109c01d ffff880076def788 [ 13.613231] ffffffff818e80fa 0000000000000000 ffff880076dc3b20 ffff880076def788 [ 13.613232] Call Trace: [ 13.613238] [<ffffffff818e4f79>] dump_stack+0x4c/0x65 [ 13.613243] [<ffffffff8109c01d>] __schedule_bug+0x4d/0x60 [ 13.613247] [<ffffffff818e80fa>] __schedule+0x6da/0xa10 [ 13.613251] [<ffffffff818e8467>] schedule+0x37/0x90 [ 13.613254] [<ffffffff818ebb59>] schedule_timeout+0x139/0x280 [ 13.613258] [<ffffffff810e1d00>] ? internal_add_timer+0xb0/0xb0 [ 13.613314] [<ffffffffa0263840>] ? gen5_read64+0xb0/0xb0 [i915] [ 13.613318] [<ffffffff810e385b>] msleep+0x4b/0x60 [ 13.613360] [<ffffffffa021d1a3>] intel_disable_gt_powersave+0x253/0x2d0 [i915] [ 13.613413] [<ffffffffa0269a8e>] intel_uncore_sanitize+0xe/0x10 [i915] [ 13.613475] [<ffffffffa02c64d9>] i915_driver_load+0x499/0xec0 [i915] [ 13.613479] [<ffffffff817d6d5b>] ? netlink_broadcast_filtered+0x12b/0x380 [ 13.613482] [<ffffffff81419780>] ? cleanup_uevent_env+0x10/0x10 [ 13.613485] [<ffffffff81419b18>] ? kobject_uevent_env+0x178/0x690 [ 13.613488] [<ffffffff81571f90>] ? devtmpfs_create_node+0x100/0x130 [ 13.613491] [<ffffffff81566767>] ? get_device+0x17/0x30 [ 13.613494] [<ffffffff8156c525>] ? klist_class_dev_get+0x15/0x20 [ 13.613497] [<ffffffff818d7b8a>] ? klist_add_tail+0x3a/0x40 [ 13.613500] [<ffffffff815680fa>] ? device_add+0x22a/0x6a0 [ 13.613534] [<ffffffffa00ab7c5>] drm_dev_register+0xb5/0x110 [drm] [ 13.613553] [<ffffffffa00ae7fd>] drm_get_pci_dev+0x8d/0x200 [drm] [ 13.613593] [<ffffffffa020e27b>] i915_pci_probe+0x3b/0x60 [i915] [ 13.613597] [<ffffffff8145fe85>] local_pci_probe+0x45/0xa0 [ 13.613600] [<ffffffff814611f5>] ? pci_match_device+0xe5/0x110 [ 13.613603] [<ffffffff81461331>] pci_device_probe+0xd1/0x120 [ 13.613608] [<ffffffff8156b669>] driver_probe_device+0x209/0x4b0 [ 13.613611] [<ffffffff8156b9eb>] __driver_attach+0x9b/0xa0 [ 13.613615] [<ffffffff8156b950>] ? __device_attach+0x40/0x40 [ 13.613618] [<ffffffff8156928b>] bus_for_each_dev+0x6b/0xb0 [ 13.613621] [<ffffffff8156af3e>] driver_attach+0x1e/0x20 [ 13.613624] [<ffffffff8156ab00>] bus_add_driver+0x180/0x250 [ 13.613628] [<ffffffff8156c1f4>] driver_register+0x64/0xf0 [ 13.613631] [<ffffffff8145f6cc>] __pci_register_driver+0x4c/0x50 [ 13.613651] [<ffffffffa00aea6a>] drm_pci_init+0xfa/0x130 [drm] [ 13.613655] [<ffffffffa0347000>] ? 0xffffffffa0347000 [ 13.613692] [<ffffffffa03470b0>] i915_init+0xb0/0xb8 [i915] [ 13.613695] [<ffffffff81002130>] do_one_initcall+0xc0/0x1f0 [ 13.613700] [<ffffffff811cde3c>] ? kmem_cache_alloc_trace+0x1cc/0x240 [ 13.613703] [<ffffffff818e1bc6>] ? do_init_module+0x28/0x1cc [ 13.613707] [<ffffffff818e1bff>] do_init_module+0x61/0x1cc [ 13.613710] [<ffffffff811007a2>] load_module+0x2142/0x2520 [ 13.613714] [<ffffffff810fc140>] ? store_uevent+0x40/0x40 [ 13.613719] [<ffffffff81100d96>] SyS_finit_module+0x86/0xb0 [ 13.613723] [<ffffffff818ed36e>] system_call_fastpath+0x12/0x71 [ 13.654608] firewire_ohci 0000:0d:00.3: added OHCI v1.10 device as card 0, 4 IR + 4 IT contexts, quirks 0x11 [ 13.667769] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013). [ 13.667770] [drm] Driver supports precise vblank timestamp query. [ 13.668500] vgaarb: device changed decodes: PCI:0000:00:02.0,olddecodes=io+mem,decodes=io+mem:owns=io+mem [ 13.730804] BUG: scheduling while atomic: systemd-udevd/149/0x00000002 [ 13.730848] Modules linked in: microcode(+) serio_raw firewire_ohci pcspkr intel_ips(+) snd_hda_intel(+) ahci(+) sdhci_pci libahci i2c_i801 sdhci snd_hda_controller libata firewire_core i915(+) uvcvideo videobuf2_vmalloc videobuf2_core mmc_core videobuf2_memops v4l2_common videodev snd_hda_codec snd_hda_core snd_hwdep drm_kms_helper snd_pcm crc_itu_t shpchp snd_timer drm thinkpad_acpi snd soundcore rfkill parport_pc parport wmi video acpi_cpufreq [ 13.730854] CPU: 2 PID: 149 Comm: systemd-udevd Tainted: G W 4.1.0-rc6-01269-g043e9bd #1 [ 13.730855] Hardware name: LENOVO 25222AU/25222AU, BIOS 6IET52WW (1.12 ) 02/16/2010 [ 13.730861] 0000000000017d40 ffff880076def6a8 ffffffff818e4f79 000000004b424b42 [ 13.730864] ffff880067117d40 ffff880076def6b8 ffffffff8109c01d ffff880076def708 [ 13.730868] ffffffff818e80fa ffff8800762d8898 ffff880076dc3b20 0000000000000000 [ 13.730869] Call Trace: [ 13.730881] [<ffffffff818e4f79>] dump_stack+0x4c/0x65 [ 13.730888] [<ffffffff8109c01d>] __schedule_bug+0x4d/0x60 [ 13.730893] [<ffffffff818e80fa>] __schedule+0x6da/0xa10 [ 13.730897] [<ffffffff818e8467>] schedule+0x37/0x90 [ 13.730902] [<ffffffff818ebb59>] schedule_timeout+0x139/0x280 [ 13.730971] [<ffffffffa0263874>] ? gen5_write32+0x34/0xc0 [i915] [ 13.730976] [<ffffffff810e1d00>] ? internal_add_timer+0xb0/0xb0 [ 13.730981] [<ffffffff810e385b>] msleep+0x4b/0x60 [ 13.731024] [<ffffffffa021b304>] intel_enable_gt_powersave+0x2b4/0x730 [i915] [ 13.731064] [<ffffffffa0212327>] ? ironlake_init_clock_gating+0x177/0x1f0 [i915] [ 13.731123] [<ffffffffa028de7e>] intel_modeset_init_hw+0x2e/0x40 [i915] [ 13.731181] [<ffffffffa028f4c7>] intel_modeset_gem_init+0x87/0x1c0 [i915] [ 13.731247] [<ffffffffa02c6b68>] i915_driver_load+0xb28/0xec0 [i915] [ 13.731253] [<ffffffff817d6d5b>] ? netlink_broadcast_filtered+0x12b/0x380 [ 13.731257] [<ffffffff81419780>] ? cleanup_uevent_env+0x10/0x10 [ 13.731261] [<ffffffff81419b18>] ? kobject_uevent_env+0x178/0x690 [ 13.731265] [<ffffffff81571f90>] ? devtmpfs_create_node+0x100/0x130 [ 13.731269] [<ffffffff81566767>] ? get_device+0x17/0x30 [ 13.731273] [<ffffffff8156c525>] ? klist_class_dev_get+0x15/0x20 [ 13.731277] [<ffffffff818d7b8a>] ? klist_add_tail+0x3a/0x40 [ 13.731281] [<ffffffff815680fa>] ? device_add+0x22a/0x6a0 [ 13.731308] [<ffffffffa00ab7c5>] drm_dev_register+0xb5/0x110 [drm] [ 13.731330] [<ffffffffa00ae7fd>] drm_get_pci_dev+0x8d/0x200 [drm] [ 13.731370] [<ffffffffa020e27b>] i915_pci_probe+0x3b/0x60 [i915] [ 13.731374] [<ffffffff8145fe85>] local_pci_probe+0x45/0xa0 [ 13.731378] [<ffffffff814611f5>] ? pci_match_device+0xe5/0x110 [ 13.731382] [<ffffffff81461331>] pci_device_probe+0xd1/0x120 [ 13.731387] [<ffffffff8156b669>] driver_probe_device+0x209/0x4b0 [ 13.731391] [<ffffffff8156b9eb>] __driver_attach+0x9b/0xa0 [ 13.731395] [<ffffffff8156b950>] ? __device_attach+0x40/0x40 [ 13.731398] [<ffffffff8156928b>] bus_for_each_dev+0x6b/0xb0 [ 13.731402] [<ffffffff8156af3e>] driver_attach+0x1e/0x20 [ 13.731405] [<ffffffff8156ab00>] bus_add_driver+0x180/0x250 [ 13.731409] [<ffffffff8156c1f4>] driver_register+0x64/0xf0 [ 13.731413] [<ffffffff8145f6cc>] __pci_register_driver+0x4c/0x50 [ 13.731434] [<ffffffffa00aea6a>] drm_pci_init+0xfa/0x130 [drm] [ 13.731438] [<ffffffffa0347000>] ? 0xffffffffa0347000 [ 13.731475] [<ffffffffa03470b0>] i915_init+0xb0/0xb8 [i915] [ 13.731481] [<ffffffff81002130>] do_one_initcall+0xc0/0x1f0 [ 13.731488] [<ffffffff811cde3c>] ? kmem_cache_alloc_trace+0x1cc/0x240 [ 13.731492] [<ffffffff818e1bc6>] ? do_init_module+0x28/0x1cc [ 13.731496] [<ffffffff818e1bff>] do_init_module+0x61/0x1cc [ 13.731501] [<ffffffff811007a2>] load_module+0x2142/0x2520 [ 13.731505] [<ffffffff810fc140>] ? store_uevent+0x40/0x40 [ 13.731511] [<ffffffff81100d96>] SyS_finit_module+0x86/0xb0 [ 13.731516] [<ffffffff818ed36e>] system_call_fastpath+0x12/0x71 [ 13.747634] ACPI: Video Device [VID] (multi-head: yes rom: no post: no) [ 13.792677] [drm:drm_edid_block_valid [drm]] *ERROR* EDID checksum is invalid, remainder is 130 [ 13.792679] Raw EDID: Thanks, Ying Huang