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] [] dump_stack+0x4c/0x65 [ 13.609984] [] __schedule_bug+0x4d/0x60 [ 13.609988] [] __schedule+0x6da/0xa10 [ 13.609993] [] schedule+0x37/0x90 [ 13.609997] [] schedule_timeout+0x139/0x280 [ 13.610004] [] ? internal_add_timer+0xb0/0xb0 [ 13.610071] [] ? gen5_read64+0xb0/0xb0 [i915] [ 13.610079] [] msleep+0x4b/0x60 [ 13.610123] [] intel_disable_gt_powersave+0x232/0x2d0 [i915] [ 13.610175] [] intel_uncore_sanitize+0xe/0x10 [i915] [ 13.610238] [] i915_driver_load+0x499/0xec0 [i915] [ 13.610243] [] ? netlink_broadcast_filtered+0x12b/0x380 [ 13.610249] [] ? cleanup_uevent_env+0x10/0x10 [ 13.610252] [] ? kobject_uevent_env+0x178/0x690 [ 13.610256] [] ? devtmpfs_create_node+0x100/0x130 [ 13.610260] [] ? get_device+0x17/0x30 [ 13.610264] [] ? klist_class_dev_get+0x15/0x20 [ 13.610269] [] ? klist_add_tail+0x3a/0x40 [ 13.610272] [] ? device_add+0x22a/0x6a0 [ 13.610302] [] drm_dev_register+0xb5/0x110 [drm] [ 13.610322] [] drm_get_pci_dev+0x8d/0x200 [drm] [ 13.610362] [] i915_pci_probe+0x3b/0x60 [i915] [ 13.610366] [] local_pci_probe+0x45/0xa0 [ 13.610369] [] ? pci_match_device+0xe5/0x110 [ 13.610373] [] pci_device_probe+0xd1/0x120 [ 13.610378] [] driver_probe_device+0x209/0x4b0 [ 13.610381] [] __driver_attach+0x9b/0xa0 [ 13.610384] [] ? __device_attach+0x40/0x40 [ 13.610388] [] bus_for_each_dev+0x6b/0xb0 [ 13.610391] [] driver_attach+0x1e/0x20 [ 13.610394] [] bus_add_driver+0x180/0x250 [ 13.610398] [] driver_register+0x64/0xf0 [ 13.610401] [] __pci_register_driver+0x4c/0x50 [ 13.610421] [] drm_pci_init+0xfa/0x130 [drm] [ 13.610425] [] ? 0xffffffffa0347000 [ 13.610462] [] i915_init+0xb0/0xb8 [i915] [ 13.610467] [] do_one_initcall+0xc0/0x1f0 [ 13.610474] [] ? kmem_cache_alloc_trace+0x1cc/0x240 [ 13.610478] [] ? do_init_module+0x28/0x1cc [ 13.610482] [] do_init_module+0x61/0x1cc [ 13.610486] [] load_module+0x2142/0x2520 [ 13.610490] [] ? store_uevent+0x40/0x40 [ 13.610496] [] SyS_finit_module+0x86/0xb0 [ 13.610500] [] 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] [] dump_stack+0x4c/0x65 [ 13.613243] [] __schedule_bug+0x4d/0x60 [ 13.613247] [] __schedule+0x6da/0xa10 [ 13.613251] [] schedule+0x37/0x90 [ 13.613254] [] schedule_timeout+0x139/0x280 [ 13.613258] [] ? internal_add_timer+0xb0/0xb0 [ 13.613314] [] ? gen5_read64+0xb0/0xb0 [i915] [ 13.613318] [] msleep+0x4b/0x60 [ 13.613360] [] intel_disable_gt_powersave+0x253/0x2d0 [i915] [ 13.613413] [] intel_uncore_sanitize+0xe/0x10 [i915] [ 13.613475] [] i915_driver_load+0x499/0xec0 [i915] [ 13.613479] [] ? netlink_broadcast_filtered+0x12b/0x380 [ 13.613482] [] ? cleanup_uevent_env+0x10/0x10 [ 13.613485] [] ? kobject_uevent_env+0x178/0x690 [ 13.613488] [] ? devtmpfs_create_node+0x100/0x130 [ 13.613491] [] ? get_device+0x17/0x30 [ 13.613494] [] ? klist_class_dev_get+0x15/0x20 [ 13.613497] [] ? klist_add_tail+0x3a/0x40 [ 13.613500] [] ? device_add+0x22a/0x6a0 [ 13.613534] [] drm_dev_register+0xb5/0x110 [drm] [ 13.613553] [] drm_get_pci_dev+0x8d/0x200 [drm] [ 13.613593] [] i915_pci_probe+0x3b/0x60 [i915] [ 13.613597] [] local_pci_probe+0x45/0xa0 [ 13.613600] [] ? pci_match_device+0xe5/0x110 [ 13.613603] [] pci_device_probe+0xd1/0x120 [ 13.613608] [] driver_probe_device+0x209/0x4b0 [ 13.613611] [] __driver_attach+0x9b/0xa0 [ 13.613615] [] ? __device_attach+0x40/0x40 [ 13.613618] [] bus_for_each_dev+0x6b/0xb0 [ 13.613621] [] driver_attach+0x1e/0x20 [ 13.613624] [] bus_add_driver+0x180/0x250 [ 13.613628] [] driver_register+0x64/0xf0 [ 13.613631] [] __pci_register_driver+0x4c/0x50 [ 13.613651] [] drm_pci_init+0xfa/0x130 [drm] [ 13.613655] [] ? 0xffffffffa0347000 [ 13.613692] [] i915_init+0xb0/0xb8 [i915] [ 13.613695] [] do_one_initcall+0xc0/0x1f0 [ 13.613700] [] ? kmem_cache_alloc_trace+0x1cc/0x240 [ 13.613703] [] ? do_init_module+0x28/0x1cc [ 13.613707] [] do_init_module+0x61/0x1cc [ 13.613710] [] load_module+0x2142/0x2520 [ 13.613714] [] ? store_uevent+0x40/0x40 [ 13.613719] [] SyS_finit_module+0x86/0xb0 [ 13.613723] [] 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] [] dump_stack+0x4c/0x65 [ 13.730888] [] __schedule_bug+0x4d/0x60 [ 13.730893] [] __schedule+0x6da/0xa10 [ 13.730897] [] schedule+0x37/0x90 [ 13.730902] [] schedule_timeout+0x139/0x280 [ 13.730971] [] ? gen5_write32+0x34/0xc0 [i915] [ 13.730976] [] ? internal_add_timer+0xb0/0xb0 [ 13.730981] [] msleep+0x4b/0x60 [ 13.731024] [] intel_enable_gt_powersave+0x2b4/0x730 [i915] [ 13.731064] [] ? ironlake_init_clock_gating+0x177/0x1f0 [i915] [ 13.731123] [] intel_modeset_init_hw+0x2e/0x40 [i915] [ 13.731181] [] intel_modeset_gem_init+0x87/0x1c0 [i915] [ 13.731247] [] i915_driver_load+0xb28/0xec0 [i915] [ 13.731253] [] ? netlink_broadcast_filtered+0x12b/0x380 [ 13.731257] [] ? cleanup_uevent_env+0x10/0x10 [ 13.731261] [] ? kobject_uevent_env+0x178/0x690 [ 13.731265] [] ? devtmpfs_create_node+0x100/0x130 [ 13.731269] [] ? get_device+0x17/0x30 [ 13.731273] [] ? klist_class_dev_get+0x15/0x20 [ 13.731277] [] ? klist_add_tail+0x3a/0x40 [ 13.731281] [] ? device_add+0x22a/0x6a0 [ 13.731308] [] drm_dev_register+0xb5/0x110 [drm] [ 13.731330] [] drm_get_pci_dev+0x8d/0x200 [drm] [ 13.731370] [] i915_pci_probe+0x3b/0x60 [i915] [ 13.731374] [] local_pci_probe+0x45/0xa0 [ 13.731378] [] ? pci_match_device+0xe5/0x110 [ 13.731382] [] pci_device_probe+0xd1/0x120 [ 13.731387] [] driver_probe_device+0x209/0x4b0 [ 13.731391] [] __driver_attach+0x9b/0xa0 [ 13.731395] [] ? __device_attach+0x40/0x40 [ 13.731398] [] bus_for_each_dev+0x6b/0xb0 [ 13.731402] [] driver_attach+0x1e/0x20 [ 13.731405] [] bus_add_driver+0x180/0x250 [ 13.731409] [] driver_register+0x64/0xf0 [ 13.731413] [] __pci_register_driver+0x4c/0x50 [ 13.731434] [] drm_pci_init+0xfa/0x130 [drm] [ 13.731438] [] ? 0xffffffffa0347000 [ 13.731475] [] i915_init+0xb0/0xb8 [i915] [ 13.731481] [] do_one_initcall+0xc0/0x1f0 [ 13.731488] [] ? kmem_cache_alloc_trace+0x1cc/0x240 [ 13.731492] [] ? do_init_module+0x28/0x1cc [ 13.731496] [] do_init_module+0x61/0x1cc [ 13.731501] [] load_module+0x2142/0x2520 [ 13.731505] [] ? store_uevent+0x40/0x40 [ 13.731511] [] SyS_finit_module+0x86/0xb0 [ 13.731516] [] 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