I just tried with the Vivid kernel (3.18.0) and had the same error. I needed to restart lightdm to get things going again.
[ 65.108123] WARNING: CPU: 0 PID: 6 at /build/buildd/linux-3.18.0/drivers/gpu/drm/i915/intel_display.c:5158 intel_modeset_check_state+0x6cd/0 x770 [i915]() [ 65.108125] active connector not linked to encoder [ 65.108171] Modules linked in: arc4 btusb gpio_ich snd_intel8x0 snd_ac97_codec ac97_bus snd_pcm snd_seq_midi snd_seq_midi_event snd_rawmidi snd_seq snd_seq_device snd_timer ath5k ath joydev snd mac80211 pcmcia serio_raw rfcomm bnep bluetooth i915 yenta_socket pcmcia_rsrc cfg80211 so undcore lpc_ich toshiba_acpi pcmcia_core sparse_keymap toshiba_bluetooth binfmt_misc drm_kms_helper wmi toshiba_haps tpm_infineon drm mac_hid v ideo shpchp i2c_algo_bit parport_pc ppdev lp parport pata_acpi sdhci_pci psmouse sdhci sky2 [ 65.108176] CPU: 0 PID: 6 Comm: kworker/u2:0 Tainted: G W 3.18.0-9-generic #10-Ubuntu [ 65.108178] Hardware name: TOSHIBA PORTEGE R200/Portable PC, BIOS Version 1.60 10/25/2005 [ 65.108188] Workqueue: events_unbound async_run_entry_fn [ 65.108195] 00000000 00000000 f50abd28 c16d31b6 f50abd6c f50abd5c c105fb32 f89a7ec4 [ 65.108202] f50abd88 00000006 f89a5a10 00001426 f895d0ed 00001426 f895d0ed f331ec00 [ 65.108208] f2936dc8 f294b300 f50abd74 c105fb83 00000009 f50abd6c f89a7ec4 f50abd88 [ 65.108209] Call Trace: [ 65.108217] [<c16d31b6>] dump_stack+0x41/0x52 [ 65.108223] [<c105fb32>] warn_slowpath_common+0x82/0xa0 [ 65.108272] [<f895d0ed>] ? intel_modeset_check_state+0x6cd/0x770 [i915] [ 65.108318] [<f895d0ed>] ? intel_modeset_check_state+0x6cd/0x770 [i915] [ 65.108323] [<c105fb83>] warn_slowpath_fmt+0x33/0x40 [ 65.108370] [<f895d0ed>] intel_modeset_check_state+0x6cd/0x770 [i915] [ 65.108419] [<f895edff>] intel_modeset_setup_hw_state+0x76f/0xbe0 [i915] [ 65.108457] [<f863e1f0>] ? drm_modeset_lock+0x30/0xf0 [drm] [ 65.108501] [<f89403c0>] ? gen4_read16+0xc0/0xc0 [i915] [ 65.108531] [<f88fd108>] __i915_drm_thaw+0x108/0x170 [i915] [ 65.108562] [<f88fdba3>] i915_resume+0x23/0x40 [i915] [ 65.108593] [<f88fdbd0>] i915_pm_resume+0x10/0x20 [i915] [ 65.108598] [<c138171f>] pci_pm_resume+0x4f/0x90 [ 65.108605] [<c14693b6>] dpm_run_callback+0x46/0x100 [ 65.108609] [<c13816d0>] ? pci_pm_thaw+0x90/0x90 [ 65.108613] [<c146988d>] device_resume+0xad/0x1a0 [ 65.108617] [<c146999e>] async_resume+0x1e/0x50 [ 65.108621] [<c107ddce>] async_run_entry_fn+0x4e/0x170 [ 65.108626] [<c10875bf>] ? wake_up_process+0x1f/0x40 [ 65.108631] [<c1076932>] process_one_work+0x122/0x3e0 [ 65.108635] [<c1076c31>] worker_thread+0x41/0x560 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1384297 Title: After system resume, Intel i915 graphics hangs Status in linux package in Ubuntu: Triaged Status in linux source package in Utopic: Triaged Bug description: [ 3871.551684] WARNING: CPU: 2 PID: 2161 at /build/buildd/linux-3.16.0/drivers/gpu/drm/i915/intel_pm.c:5997 intel_display_power_put+0x14c/0x160 [i915]() [ 3871.551686] Modules linked in: ctr ccm ec_sys dm_crypt intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm crct10dif_pclmul crc32_pclmul arc4 ghash_clmulni_intel rfcomm dm_multipath scsi_dh bnep aesni_intel iwlmvm hid_multitouch aes_x86_64 mac80211 lrw gf128mul glue_helper ablk_helper cryptd snd_hda_codec_hdmi snd_hda_codec_realtek iwlwifi snd_hda_codec_generic nfsd rtsx_pci_ms snd_hda_intel auth_rpcgss snd_hda_controller nfs_acl btusb memstick joydev snd_hda_codec nfs lockd snd_hwdep bluetooth snd_seq_midi snd_seq_midi_event sunrpc snd_rawmidi snd_soc_rt5640 6lowpan_iphc fscache snd_soc_rl6231 cfg80211 snd_seq snd_soc_core snd_compress binfmt_misc snd_pcm_dmaengine snd_pcm snd_seq_device tpm_infineon snd_timer lpc_ich dw_dmac dw_dmac_core i2c_hid 8250_dw i2c_designware_platform [ 3871.551704] i2c_designware_core snd shpchp snd_soc_sst_acpi mei_me mei spi_pxa2xx_platform mac_hid soundcore serio_raw parport_pc ppdev lp parport btrfs xor raid6_pq dm_mirror dm_region_hash dm_log mmc_block usbhid hid rtsx_pci_sdmmc i915 i2c_algo_bit rtsx_pci psmouse ahci drm_kms_helper r8169 libahci mii drm wmi sdhci_acpi video sdhci [ 3871.551717] CPU: 2 PID: 2161 Comm: unity-system-co Tainted: G W I 3.16.0-23-generic #30-Ubuntu [ 3871.551718] Hardware name: System76, Inc Darter UltraThin/Darter UltraThin, BIOS 4.6.5 10/28/2013 [ 3871.551719] 0000000000000009 ffff8800d70efae0 ffffffff8177fcbc 0000000000000000 [ 3871.551721] ffff8800d70efb18 ffffffff8106fd8d ffff88021008002c 000000000000000b [ 3871.551722] ffff880210088520 ffff8802106c3000 ffff880210080000 ffff8800d70efb28 [ 3871.551724] Call Trace: [ 3871.551729] [<ffffffff8177fcbc>] dump_stack+0x45/0x56 [ 3871.551732] [<ffffffff8106fd8d>] warn_slowpath_common+0x7d/0xa0 [ 3871.551734] [<ffffffff8106fe6a>] warn_slowpath_null+0x1a/0x20 [ 3871.551742] [<ffffffffc026525c>] intel_display_power_put+0x14c/0x160 [i915] [ 3871.551754] [<ffffffffc02adff4>] modeset_update_crtc_power_domains+0x204/0x210 [i915] [ 3871.551765] [<ffffffffc02ae00e>] haswell_modeset_global_resources+0xe/0x10 [i915] [ 3871.551775] [<ffffffffc02af70a>] __intel_set_mode+0x5fa/0xab0 [i915] [ 3871.551785] [<ffffffffc02b2af6>] intel_set_mode+0x16/0x30 [i915] [ 3871.551794] [<ffffffffc02b3bba>] intel_crtc_set_config+0xa4a/0xda0 [i915] [ 3871.551804] [<ffffffffc01956d1>] drm_mode_set_config_internal+0x61/0xe0 [drm] [ 3871.551813] [<ffffffffc01961e1>] drm_framebuffer_remove+0xe1/0x140 [drm] [ 3871.551822] [<ffffffffc019a1ff>] drm_mode_rmfb+0xdf/0x110 [drm] [ 3871.551828] [<ffffffffc0189a4f>] drm_ioctl+0x1df/0x680 [drm] [ 3871.551831] [<ffffffff811f77e4>] ? dentry_free+0x34/0x40 [ 3871.551833] [<ffffffff811f81aa>] ? __dentry_kill+0x17a/0x200 [ 3871.551835] [<ffffffff811f83b0>] ? dput+0x180/0x1c0 [ 3871.551837] [<ffffffff812016b4>] ? mntput+0x24/0x40 [ 3871.551838] [<ffffffff811f4bc8>] do_vfs_ioctl+0x2c8/0x4a0 [ 3871.551840] [<ffffffff811e285e>] ? ____fput+0xe/0x10 [ 3871.551842] [<ffffffff810919ac>] ? task_work_run+0xbc/0xf0 [ 3871.551843] [<ffffffff811f4e21>] SyS_ioctl+0x81/0xa0 [ 3871.551845] [<ffffffff81787ced>] system_call_fastpath+0x1a/0x1f [ 3871.551854] WARNING: CPU: 2 PID: 2161 at /build/buildd/linux-3.16.0/drivers/gpu/drm/i915/intel_pm.c:6001 intel_display_power_put+0xf9/0x160 [i915]() [ 3871.551854] Modules linked in: ctr ccm ec_sys dm_crypt intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm crct10dif_pclmul crc32_pclmul arc4 ghash_clmulni_intel rfcomm dm_multipath scsi_dh bnep aesni_intel iwlmvm hid_multitouch aes_x86_64 mac80211 lrw gf128mul glue_helper ablk_helper cryptd snd_hda_codec_hdmi snd_hda_codec_realtek iwlwifi snd_hda_codec_generic nfsd rtsx_pci_ms snd_hda_intel auth_rpcgss snd_hda_controller nfs_acl btusb memstick joydev snd_hda_codec nfs lockd snd_hwdep bluetooth snd_seq_midi snd_seq_midi_event sunrpc snd_rawmidi snd_soc_rt5640 6lowpan_iphc fscache snd_soc_rl6231 cfg80211 snd_seq snd_soc_core snd_compress binfmt_misc snd_pcm_dmaengine snd_pcm snd_seq_device tpm_infineon snd_timer lpc_ich dw_dmac dw_dmac_core i2c_hid 8250_dw i2c_designware_platform [ 3871.551872] i2c_designware_core snd shpchp snd_soc_sst_acpi mei_me mei spi_pxa2xx_platform mac_hid soundcore serio_raw parport_pc ppdev lp parport btrfs xor raid6_pq dm_mirror dm_region_hash dm_log mmc_block usbhid hid rtsx_pci_sdmmc i915 i2c_algo_bit rtsx_pci psmouse ahci drm_kms_helper r8169 libahci mii drm wmi sdhci_acpi video sdhci [ 3871.551883] CPU: 2 PID: 2161 Comm: unity-system-co Tainted: G W I 3.16.0-23-generic #30-Ubuntu [ 3871.551884] Hardware name: System76, Inc Darter UltraThin/Darter UltraThin, BIOS 4.6.5 10/28/2013 [ 3871.551884] 0000000000000009 ffff8800d70efae0 ffffffff8177fcbc 0000000000000000 [ 3871.551886] ffff8800d70efb18 ffffffff8106fd8d ffffffffc0313800 0000000000000800 [ 3871.551887] ffff880210088520 0000000000000000 ffff880210080000 ffff8800d70efb28 [ 3871.551889] Call Trace: [ 3871.551891] [<ffffffff8177fcbc>] dump_stack+0x45/0x56 [ 3871.551893] [<ffffffff8106fd8d>] warn_slowpath_common+0x7d/0xa0 [ 3871.551895] [<ffffffff8106fe6a>] warn_slowpath_null+0x1a/0x20 [ 3871.551902] [<ffffffffc0265209>] intel_display_power_put+0xf9/0x160 [i915] [ 3871.551913] [<ffffffffc02adff4>] modeset_update_crtc_power_domains+0x204/0x210 [i915] [ 3871.551923] [<ffffffffc02ae00e>] haswell_modeset_global_resources+0xe/0x10 [i915] [ 3871.551932] [<ffffffffc02af70a>] __intel_set_mode+0x5fa/0xab0 [i915] [ 3871.551942] [<ffffffffc02b2af6>] intel_set_mode+0x16/0x30 [i915] [ 3871.551951] [<ffffffffc02b3bba>] intel_crtc_set_config+0xa4a/0xda0 [i915] [ 3871.551959] [<ffffffffc01956d1>] drm_mode_set_config_internal+0x61/0xe0 [drm] [ 3871.551967] [<ffffffffc01961e1>] drm_framebuffer_remove+0xe1/0x140 [drm] [ 3871.551976] [<ffffffffc019a1ff>] drm_mode_rmfb+0xdf/0x110 [drm] [ 3871.551981] [<ffffffffc0189a4f>] drm_ioctl+0x1df/0x680 [drm] [ 3871.551984] [<ffffffff811f77e4>] ? dentry_free+0x34/0x40 [ 3871.551986] [<ffffffff811f81aa>] ? __dentry_kill+0x17a/0x200 [ 3871.551988] [<ffffffff811f83b0>] ? dput+0x180/0x1c0 [ 3871.551989] [<ffffffff812016b4>] ? mntput+0x24/0x40 [ 3871.551991] [<ffffffff811f4bc8>] do_vfs_ioctl+0x2c8/0x4a0 [ 3871.551992] [<ffffffff811e285e>] ? ____fput+0xe/0x10 [ 3871.551994] [<ffffffff810919ac>] ? task_work_run+0xbc/0xf0 [ 3871.551995] [<ffffffff811f4e21>] SyS_ioctl+0x81/0xa0 [ 3871.551997] [<ffffffff81787ced>] system_call_fastpath+0x1a/0x1f [ 3871.551998] ---[ end trace c466719751b40ad9 ]--- [ 3874.233994] ------------[ cut here ]------------ [ 3874.234021] WARNING: CPU: 1 PID: 574 at /build/buildd/linux-3.16.0/drivers/gpu/drm/i915/intel_pm.c:5997 intel_display_power_put+0x14c/0x160 [i915]() [ 3874.234022] Modules linked in: ctr ccm ec_sys dm_crypt intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm crct10dif_pclmul crc32_pclmul arc4 ghash_clmulni_intel rfcomm dm_multipath scsi_dh bnep aesni_intel iwlmvm hid_multitouch aes_x86_64 mac80211 lrw gf128mul glue_helper ablk_helper cryptd snd_hda_codec_hdmi snd_hda_codec_realtek iwlwifi snd_hda_codec_generic nfsd rtsx_pci_ms snd_hda_intel auth_rpcgss snd_hda_controller nfs_acl btusb memstick joydev snd_hda_codec nfs lockd snd_hwdep bluetooth snd_seq_midi snd_seq_midi_event sunrpc snd_rawmidi snd_soc_rt5640 6lowpan_iphc fscache snd_soc_rl6231 cfg80211 snd_seq snd_soc_core snd_compress binfmt_misc snd_pcm_dmaengine snd_pcm snd_seq_device tpm_infineon snd_timer lpc_ich dw_dmac dw_dmac_core i2c_hid 8250_dw i2c_designware_platform [ 3874.234045] i2c_designware_core snd shpchp snd_soc_sst_acpi mei_me mei spi_pxa2xx_platform mac_hid soundcore serio_raw parport_pc ppdev lp parport btrfs xor raid6_pq dm_mirror dm_region_hash dm_log mmc_block usbhid hid rtsx_pci_sdmmc i915 i2c_algo_bit rtsx_pci psmouse ahci drm_kms_helper r8169 libahci mii drm wmi sdhci_acpi video sdhci [ 3874.234059] CPU: 1 PID: 574 Comm: kworker/1:3 Tainted: G W I 3.16.0-23-generic #30-Ubuntu [ 3874.234060] Hardware name: System76, Inc Darter UltraThin/Darter UltraThin, BIOS 4.6.5 10/28/2013 [ 3874.234074] Workqueue: events edp_panel_vdd_work [i915] [ 3874.234075] 0000000000000009 ffff880211d3fd30 ffffffff8177fcbc 0000000000000000 [ 3874.234077] ffff880211d3fd68 ffffffff8106fd8d ffff88021008002c 000000000000000b [ 3874.234078] ffff880210088520 ffff88021057e000 ffff880210080000 ffff880211d3fd78 [ 3874.234080] Call Trace: [ 3874.234084] [<ffffffff8177fcbc>] dump_stack+0x45/0x56 [ 3874.234087] [<ffffffff8106fd8d>] warn_slowpath_common+0x7d/0xa0 [ 3874.234089] [<ffffffff8106fe6a>] warn_slowpath_null+0x1a/0x20 [ 3874.234097] [<ffffffffc026525c>] intel_display_power_put+0x14c/0x160 [i915] [ 3874.234109] [<ffffffffc02c79a4>] edp_panel_vdd_off_sync+0xf4/0x1e0 [i915] [ 3874.234120] [<ffffffffc02c7ac4>] edp_panel_vdd_work+0x34/0x50 [i915] [ 3874.234122] [<ffffffff8108d8e2>] process_one_work+0x182/0x4e0 [ 3874.234124] [<ffffffff8108dcab>] worker_thread+0x6b/0x6a0 [ 3874.234125] [<ffffffff8178294d>] ? __schedule+0x39d/0x890 [ 3874.234127] [<ffffffff8108dc40>] ? process_one_work+0x4e0/0x4e0 [ 3874.234129] [<ffffffff81094aeb>] kthread+0xdb/0x100 [ 3874.234131] [<ffffffff81094a10>] ? kthread_create_on_node+0x1c0/0x1c0 [ 3874.234133] [<ffffffff81787c3c>] ret_from_fork+0x7c/0xb0 [ 3874.234135] [<ffffffff81094a10>] ? kthread_create_on_node+0x1c0/0x1c0 ProblemType: Bug DistroRelease: Ubuntu 14.10 Package: xserver-xorg-video-intel 2:2.99.914-1~exp1ubuntu4 ProcVersionSignature: Ubuntu 3.16.0-23.30-generic 3.16.4 Uname: Linux 3.16.0-23-generic x86_64 .tmp.unity.support.test.0: ApportVersion: 2.14.7-0ubuntu7 Architecture: amd64 BootLog: Scanning for Btrfs filesystems URfkill[629]: Starting urfkilld version 0.6.0 * Setting up X socket directories... [240G [234G[ OK ] CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: compiz CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0' CompositorUnredirectFSW: true CurrentDesktop: Unity Date: Wed Oct 22 10:41:08 2014 DistUpgraded: Fresh install DistroCodename: utopic DistroVariant: ubuntu EcryptfsInUse: Yes ExtraDebuggingInterest: Yes, including running git bisection searches GraphicsCard: Intel Corporation Haswell-ULT Integrated Graphics Controller [8086:0a16] (rev 09) (prog-if 00 [VGA controller]) Subsystem: CLEVO/KAPOK Computer Device [1558:8400] MachineType: System76, Inc Darter UltraThin ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-23-generic root=UUID=5aa160f9-0a01-4291-8d9d-704469e9a970 ro acpi_backlight=vendor i915.disable_power_well=0 quiet splash vt.handoff=7 SourcePackage: xserver-xorg-video-intel UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 10/28/2013 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 4.6.5 dmi.board.asset.tag: Tag 12345 dmi.board.name: Darter UltraThin dmi.board.vendor: System76, Inc dmi.board.version: daru4 dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 9 dmi.chassis.vendor: System76, Inc dmi.chassis.version: N/A dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr4.6.5:bd10/28/2013:svnSystem76,Inc:pnDarterUltraThin:pvrdaru4:rvnSystem76,Inc:rnDarterUltraThin:rvrdaru4:cvnSystem76,Inc:ct9:cvrN/A: dmi.product.name: Darter UltraThin dmi.product.version: daru4 dmi.sys.vendor: System76, Inc version.compiz: compiz 1:0.9.12+14.10.20140918-0ubuntu1 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.56-1 version.libgl1-mesa-dri: libgl1-mesa-dri 10.3.0-0ubuntu3 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 10.3.0-0ubuntu3 version.xserver-xorg-core: xserver-xorg-core 2:1.16.0-1ubuntu1 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.0-1ubuntu2 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.4.0-2ubuntu2 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.914-1~exp1ubuntu4 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu2 xserver.bootTime: Wed Oct 22 08:49:44 2014 xserver.configfile: default xserver.errors: [dix] eGalax Inc. eGalaxTouch EXC7910-1057-13.00.00: unable to find touch point 0 xserver.logfile: /var/log/Xorg.0.log xserver.outputs: Output HDMI-0 xserver.version: 2:1.16.0-1ubuntu1 xserver.video_driver: intel To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1384297/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp