Public bug reported:
I spotted the following warning in my dmesg:
[110593.204346] PM: Syncing filesystems ... done.
[110593.324940] PM: Preparing system for mem sleep
[110593.325213] Freezing user space processes ... (elapsed 0.001 seconds) done.
[110593.327069] Freezing remaining freezable tasks ... (elapsed 0.001 seconds)
done.
[110593.328343] PM: Entering mem sleep
[110593.328383] Suspending console(s) (use no_console_suspend to debug)
[110593.456710] sd 1:0:0:0: [sdb] Synchronizing SCSI cache
[110593.456767] sd 0:0:0:0: [sda] Synchronizing SCSI cache
[110593.456828] sd 1:0:0:0: [sdb] Stopping disk
[110593.456829] sd 0:0:0:0: [sda] Stopping disk
[110593.692664] ------------[ cut here ]------------
[110593.692693] WARNING: CPU: 2 PID: 11019 at
/build/buildd/linux-3.13.0/drivers/gpu/drm/i915/intel_uncore.c:125
gen6_gt_check_fifodbg.isra.9+0x38/0x50 [i915]()
[110593.692693] MMIO read or write has been dropped ffffffff
[110593.692710] Modules linked in: overlayfs hid_generic usbhid hid
ipt_MASQUERADE iptable_nat nf_nat_ipv4 nf_nat nf_conntrack_ipv4 nf_defrag_ipv4
xt_conntrack nf_conntrack ipt_REJECT xt_CHECKSUM iptable_mangle xt_tcpudp
bridge stp llc ip6table_filter ip6_tables iptable_filter ip_tables ebtable_nat
ebtables x_tables ctr ccm rfcomm bnep binfmt_misc joydev dm_crypt
snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_intel snd_hda_codec
dm_multipath scsi_dh snd_hwdep snd_pcm snd_page_alloc intel_rapl
x86_pkg_temp_thermal intel_powerclamp kvm_intel kvm snd_seq_midi
snd_seq_midi_event snd_rawmidi crct10dif_pclmul crc32_pclmul
ghash_clmulni_intel aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper
cryptd uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core arc4
thinkpad_acpi videodev nvram psmouse btusb iwldvm snd_seq serio_raw bluetooth
mac80211 iwlwifi snd_seq_device snd_timer snd cfg80211 soundcore mac_hid mei_me
mei lpc_ich parport_pc ppdev coretemp lp parport btrfs xor raid6_pq libcrc32c
i915 ahci libahci e1000e sdhci_pci i2c_algo_bit sdhci ptp pps_core
drm_kms_helper drm wmi video
[110593.692721] CPU: 2 PID: 11019 Comm: kworker/u16:14 Not tainted
3.13.0-23-generic #45-Ubuntu
[110593.692722] Hardware name: LENOVO 2359CTO/2359CTO, BIOS G4ET62WW (2.04 )
09/13/2012
[110593.692731] Workqueue: i915 gen6_force_wake_work [i915]
[110593.692733] 0000000000000009 ffff88007ff95d38 ffffffff81715384
ffff88007ff95d80
[110593.692735] ffff88007ff95d70 ffffffff810676bd ffff880402084020
ffff880402084028
[110593.692736] 0000000000000246 0000000000000000 0000000000000200
ffff88007ff95dd0
[110593.692736] Call Trace:
[110593.692740] [<ffffffff81715384>] dump_stack+0x45/0x56
[110593.692743] [<ffffffff810676bd>] warn_slowpath_common+0x7d/0xa0
[110593.692744] [<ffffffff8106772c>] warn_slowpath_fmt+0x4c/0x50
[110593.692753] [<ffffffffa0174de8>] gen6_gt_check_fifodbg.isra.9+0x38/0x50
[i915]
[110593.692761] [<ffffffffa0174e8b>] __gen6_gt_force_wake_mt_put+0x2b/0x30
[i915]
[110593.692769] [<ffffffffa0174bb7>] gen6_force_wake_work+0x37/0x50 [i915]
[110593.692771] [<ffffffff81083892>] process_one_work+0x182/0x450
[110593.692773] [<ffffffff81084631>] worker_thread+0x121/0x410
[110593.692774] [<ffffffff81084510>] ? rescuer_thread+0x3e0/0x3e0
[110593.692776] [<ffffffff8108b302>] kthread+0xd2/0xf0
[110593.692777] [<ffffffff8108b230>] ? kthread_create_on_node+0x1d0/0x1d0
[110593.692779] [<ffffffff81725cbc>] ret_from_fork+0x7c/0xb0
[110593.692780] [<ffffffff8108b230>] ? kthread_create_on_node+0x1d0/0x1d0
[110593.692781] ---[ end trace c249140958e3daff ]---
[110594.849092] PM: suspend of devices complete after 1520.212 msecs
[110594.849224] PM: late suspend of devices complete after 0.130 msecs
[110594.865134] ehci-pci 0000:00:1d.0: System wakeup enabled by ACPI
[110594.881219] ehci-pci 0000:00:1a.0: System wakeup enabled by ACPI
[110594.897052] e1000e 0000:00:19.0: System wakeup enabled by ACPI
[110594.929056] xhci_hcd 0000:00:14.0: System wakeup enabled by ACPI
[110594.945076] PM: noirq suspend of devices complete after 95.824 msecs
[110594.945675] ACPI: Preparing to enter system sleep state S3
[110594.948655] PM: Saving platform NVS memory
[110594.949281] Disabling non-boot CPUs ...
[110594.950463] kvm: disabling virtualization on CPU1
[110595.053029] smpboot: CPU 1 is now offline
[110595.054450] kvm: disabling virtualization on CPU2
[110595.157055] smpboot: CPU 2 is now offline
[110595.158455] kvm: disabling virtualization on CPU3
[110595.261077] smpboot: CPU 3 is now offline
[110595.263291] ACPI: Low-level resume complete
[110595.263355] PM: Restoring platform NVS memory
[110595.264044] Enabling non-boot CPUs ...
[110595.264109] x86: Booting SMP configuration:
[110595.264110] smpboot: Booting Node 0 Processor 1 APIC 0x1
[110595.275357] kvm: enabling virtualization on CPU1
[110595.335652] CPU1 is up
[110595.335692] smpboot: Booting Node 0 Processor 2 APIC 0x2
[110595.346935] kvm: enabling virtualization on CPU2
[110595.387668] CPU2 is up
[110595.387712] smpboot: Booting Node 0 Processor 3 APIC 0x3
[110595.398961] kvm: enabling virtualization on CPU3
[110595.439688] CPU3 is up
[110595.442662] ACPI: Waking up from system sleep state S3
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.13.0-23-generic 3.13.0-23.45
ProcVersionSignature: Ubuntu 3.13.0-23.45-generic 3.13.8
Uname: Linux 3.13.0-23-generic x86_64
ApportVersion: 2.14.1-0ubuntu2
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: sarnold 2876 F.... pulseaudio
CurrentDesktop: Unity
Date: Fri Apr 18 11:30:08 2014
HibernationDevice: RESUME=UUID=81b2976f-2830-4449-9dae-e1d44a43fa78
InstallationDate: Installed on 2012-10-18 (547 days ago)
InstallationMedia: Ubuntu 12.04.1 LTS "Precise Pangolin" - Release amd64
(20120823.1)
MachineType: LENOVO 2359CTO
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-23-generic
root=UUID=7b8c2e1b-d2e6-47d9-9030-c078e9701a1d ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.13.0-23-generic N/A
linux-backports-modules-3.13.0-23-generic N/A
linux-firmware 1.127
SourcePackage: linux
UpgradeStatus: Upgraded to trusty on 2014-04-12 (6 days ago)
dmi.bios.date: 09/13/2012
dmi.bios.vendor: LENOVO
dmi.bios.version: G4ET62WW (2.04 )
dmi.board.asset.tag: Not Available
dmi.board.name: 2359CTO
dmi.board.vendor: LENOVO
dmi.board.version: Not Defined
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias:
dmi:bvnLENOVO:bvrG4ET62WW(2.04):bd09/13/2012:svnLENOVO:pn2359CTO:pvrThinkPadT530:rvnLENOVO:rn2359CTO:rvrNotDefined:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 2359CTO
dmi.product.version: ThinkPad T530
dmi.sys.vendor: LENOVO
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug trusty
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https://bugs.launchpad.net/bugs/1309684
Title:
WARNING in intel_uncore.c:125 gen6_gt_check_fifodbg.isra.9+0x38/0x50
[i915]() during suspend
Status in “linux” package in Ubuntu:
New
Bug description:
I spotted the following warning in my dmesg:
[110593.204346] PM: Syncing filesystems ... done.
[110593.324940] PM: Preparing system for mem sleep
[110593.325213] Freezing user space processes ... (elapsed 0.001 seconds)
done.
[110593.327069] Freezing remaining freezable tasks ... (elapsed 0.001
seconds) done.
[110593.328343] PM: Entering mem sleep
[110593.328383] Suspending console(s) (use no_console_suspend to debug)
[110593.456710] sd 1:0:0:0: [sdb] Synchronizing SCSI cache
[110593.456767] sd 0:0:0:0: [sda] Synchronizing SCSI cache
[110593.456828] sd 1:0:0:0: [sdb] Stopping disk
[110593.456829] sd 0:0:0:0: [sda] Stopping disk
[110593.692664] ------------[ cut here ]------------
[110593.692693] WARNING: CPU: 2 PID: 11019 at
/build/buildd/linux-3.13.0/drivers/gpu/drm/i915/intel_uncore.c:125
gen6_gt_check_fifodbg.isra.9+0x38/0x50 [i915]()
[110593.692693] MMIO read or write has been dropped ffffffff
[110593.692710] Modules linked in: overlayfs hid_generic usbhid hid
ipt_MASQUERADE iptable_nat nf_nat_ipv4 nf_nat nf_conntrack_ipv4 nf_defrag_ipv4
xt_conntrack nf_conntrack ipt_REJECT xt_CHECKSUM iptable_mangle xt_tcpudp
bridge stp llc ip6table_filter ip6_tables iptable_filter ip_tables ebtable_nat
ebtables x_tables ctr ccm rfcomm bnep binfmt_misc joydev dm_crypt
snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_intel snd_hda_codec
dm_multipath scsi_dh snd_hwdep snd_pcm snd_page_alloc intel_rapl
x86_pkg_temp_thermal intel_powerclamp kvm_intel kvm snd_seq_midi
snd_seq_midi_event snd_rawmidi crct10dif_pclmul crc32_pclmul
ghash_clmulni_intel aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper
cryptd uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core arc4
thinkpad_acpi videodev nvram psmouse btusb iwldvm snd_seq serio_raw bluetooth
mac80211 iwlwifi snd_seq_device snd_timer snd cfg80211 soundcore mac_hid mei_me
mei lpc_ich parport_pc ppdev coretemp lp parport btrfs xor raid6_pq libcrc32c
i915 ahci libahci e1000e sdhci_pci i2c_algo_bit sdhci ptp pps_core
drm_kms_helper drm wmi video
[110593.692721] CPU: 2 PID: 11019 Comm: kworker/u16:14 Not tainted
3.13.0-23-generic #45-Ubuntu
[110593.692722] Hardware name: LENOVO 2359CTO/2359CTO, BIOS G4ET62WW (2.04 )
09/13/2012
[110593.692731] Workqueue: i915 gen6_force_wake_work [i915]
[110593.692733] 0000000000000009 ffff88007ff95d38 ffffffff81715384
ffff88007ff95d80
[110593.692735] ffff88007ff95d70 ffffffff810676bd ffff880402084020
ffff880402084028
[110593.692736] 0000000000000246 0000000000000000 0000000000000200
ffff88007ff95dd0
[110593.692736] Call Trace:
[110593.692740] [<ffffffff81715384>] dump_stack+0x45/0x56
[110593.692743] [<ffffffff810676bd>] warn_slowpath_common+0x7d/0xa0
[110593.692744] [<ffffffff8106772c>] warn_slowpath_fmt+0x4c/0x50
[110593.692753] [<ffffffffa0174de8>] gen6_gt_check_fifodbg.isra.9+0x38/0x50
[i915]
[110593.692761] [<ffffffffa0174e8b>] __gen6_gt_force_wake_mt_put+0x2b/0x30
[i915]
[110593.692769] [<ffffffffa0174bb7>] gen6_force_wake_work+0x37/0x50 [i915]
[110593.692771] [<ffffffff81083892>] process_one_work+0x182/0x450
[110593.692773] [<ffffffff81084631>] worker_thread+0x121/0x410
[110593.692774] [<ffffffff81084510>] ? rescuer_thread+0x3e0/0x3e0
[110593.692776] [<ffffffff8108b302>] kthread+0xd2/0xf0
[110593.692777] [<ffffffff8108b230>] ? kthread_create_on_node+0x1d0/0x1d0
[110593.692779] [<ffffffff81725cbc>] ret_from_fork+0x7c/0xb0
[110593.692780] [<ffffffff8108b230>] ? kthread_create_on_node+0x1d0/0x1d0
[110593.692781] ---[ end trace c249140958e3daff ]---
[110594.849092] PM: suspend of devices complete after 1520.212 msecs
[110594.849224] PM: late suspend of devices complete after 0.130 msecs
[110594.865134] ehci-pci 0000:00:1d.0: System wakeup enabled by ACPI
[110594.881219] ehci-pci 0000:00:1a.0: System wakeup enabled by ACPI
[110594.897052] e1000e 0000:00:19.0: System wakeup enabled by ACPI
[110594.929056] xhci_hcd 0000:00:14.0: System wakeup enabled by ACPI
[110594.945076] PM: noirq suspend of devices complete after 95.824 msecs
[110594.945675] ACPI: Preparing to enter system sleep state S3
[110594.948655] PM: Saving platform NVS memory
[110594.949281] Disabling non-boot CPUs ...
[110594.950463] kvm: disabling virtualization on CPU1
[110595.053029] smpboot: CPU 1 is now offline
[110595.054450] kvm: disabling virtualization on CPU2
[110595.157055] smpboot: CPU 2 is now offline
[110595.158455] kvm: disabling virtualization on CPU3
[110595.261077] smpboot: CPU 3 is now offline
[110595.263291] ACPI: Low-level resume complete
[110595.263355] PM: Restoring platform NVS memory
[110595.264044] Enabling non-boot CPUs ...
[110595.264109] x86: Booting SMP configuration:
[110595.264110] smpboot: Booting Node 0 Processor 1 APIC 0x1
[110595.275357] kvm: enabling virtualization on CPU1
[110595.335652] CPU1 is up
[110595.335692] smpboot: Booting Node 0 Processor 2 APIC 0x2
[110595.346935] kvm: enabling virtualization on CPU2
[110595.387668] CPU2 is up
[110595.387712] smpboot: Booting Node 0 Processor 3 APIC 0x3
[110595.398961] kvm: enabling virtualization on CPU3
[110595.439688] CPU3 is up
[110595.442662] ACPI: Waking up from system sleep state S3
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.13.0-23-generic 3.13.0-23.45
ProcVersionSignature: Ubuntu 3.13.0-23.45-generic 3.13.8
Uname: Linux 3.13.0-23-generic x86_64
ApportVersion: 2.14.1-0ubuntu2
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: sarnold 2876 F.... pulseaudio
CurrentDesktop: Unity
Date: Fri Apr 18 11:30:08 2014
HibernationDevice: RESUME=UUID=81b2976f-2830-4449-9dae-e1d44a43fa78
InstallationDate: Installed on 2012-10-18 (547 days ago)
InstallationMedia: Ubuntu 12.04.1 LTS "Precise Pangolin" - Release amd64
(20120823.1)
MachineType: LENOVO 2359CTO
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-23-generic
root=UUID=7b8c2e1b-d2e6-47d9-9030-c078e9701a1d ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.13.0-23-generic N/A
linux-backports-modules-3.13.0-23-generic N/A
linux-firmware 1.127
SourcePackage: linux
UpgradeStatus: Upgraded to trusty on 2014-04-12 (6 days ago)
dmi.bios.date: 09/13/2012
dmi.bios.vendor: LENOVO
dmi.bios.version: G4ET62WW (2.04 )
dmi.board.asset.tag: Not Available
dmi.board.name: 2359CTO
dmi.board.vendor: LENOVO
dmi.board.version: Not Defined
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias:
dmi:bvnLENOVO:bvrG4ET62WW(2.04):bd09/13/2012:svnLENOVO:pn2359CTO:pvrThinkPadT530:rvnLENOVO:rn2359CTO:rvrNotDefined:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 2359CTO
dmi.product.version: ThinkPad T530
dmi.sys.vendor: LENOVO
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