Hi, sorry for the delay, this is a friend's laptop. The failure to suspend was there in 4.5.0-040500-generic package, but it is fixed in 4.6.0-040600rc1-generic.
however, a kernel bug with a similar trace as the bug in kernel package 4.4.0-16-generic (see below). All tested versions suffer from flickering in the screen that appears at random intervals. The flickering disappears for a while in version 4.6.0 after a suspend/resume cycle. [ 66.775902] ------------[ cut here ]------------ [ 66.775928] WARNING: CPU: 1 PID: 166 at /home/kernel/COD/linux/drivers/gpu/drm/i915/intel_uncore.c:649 __unclaimed_reg_debug+0x80/0x90 [i915] [ 66.775930] Unclaimed register detected before reading register 0x205c [ 66.775930] Modules linked in: thinkpad_acpi nvram msr pci_stub vboxpci(OE) vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) drbg ansi_cprng ctr ccm bnep uvcvideo dm_crypt videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_core videodev media btusb btrtl btbcm btintel bluetooth arc4 iwlmvm mac80211 snd_soc_skl intel_rapl snd_soc_skl_ipc x86_pkg_temp_thermal snd_soc_sst_ipc intel_powerclamp snd_soc_sst_dsp coretemp snd_hda_ext_core kvm_intel kvm irqbypass snd_soc_sst_match snd_hda_codec_hdmi iwlwifi snd_soc_core snd_hda_codec_generic crct10dif_pclmul snd_compress ac97_bus snd_pcm_dmaengine crc32_pclmul dw_dmac_core ghash_clmulni_intel rtsx_pci_ms snd_hda_intel snd_hda_codec snd_hda_core memstick snd_hwdep aesni_intel snd_pcm snd_seq_midi aes_x86_64 snd_seq_midi_event lrw cfg80211 snd_rawmidi gf128mul [ 66.775956] glue_helper snd_seq snd_seq_device ablk_helper snd_timer cryptd mei_me mei snd ideapad_laptop sparse_keymap shpchp input_leds joydev soundcore intel_pch_thermal serio_raw tpm_crb acpi_pad mac_hid parport_pc ppdev lp parport autofs4 amdkfd rtsx_pci_sdmmc amd_iommu_v2 radeon i915 ttm i2c_algo_bit drm_kms_helper syscopyarea psmouse sysfillrect sysimgblt fb_sys_fops rtsx_pci drm r8169 ahci mii libahci wmi video fjes [ 66.775975] CPU: 1 PID: 166 Comm: kworker/u16:3 Tainted: G OE 4.6.0-040600rc1-generic #201603261930 [ 66.775976] Hardware name: LENOVO 80LM/Lenovo B51-80, BIOS D7CN15WW(V1.01) 08/12/2015 [ 66.775986] Workqueue: i915-hangcheck i915_hangcheck_elapsed [i915] [ 66.775987] 0000000000000086 000000000e719fb3 ffff88006f9dfc18 ffffffff813ee833 [ 66.775989] ffff88006f9dfc68 0000000000000000 ffff88006f9dfc58 ffffffff8108275b [ 66.775991] 000002896f9dfc60 0000000000000001 0000000000000001 000000000000205c [ 66.775992] Call Trace: [ 66.775996] [<ffffffff813ee833>] dump_stack+0x63/0x90 [ 66.775999] [<ffffffff8108275b>] __warn+0xcb/0xf0 [ 66.776000] [<ffffffff810827df>] warn_slowpath_fmt+0x5f/0x80 [ 66.776014] [<ffffffffc01f4dc0>] __unclaimed_reg_debug+0x80/0x90 [i915] [ 66.776026] [<ffffffffc01fa81b>] gen9_read32+0x30b/0x390 [i915] [ 66.776038] [<ffffffffc01efc94>] intel_ring_get_active_head+0x84/0xe0 [i915] [ 66.776047] [<ffffffffc01a74db>] i915_hangcheck_elapsed+0x10b/0x550 [i915] [ 66.776050] [<ffffffff8102d772>] ? __switch_to+0x2a2/0x550 [ 66.776052] [<ffffffff8109c845>] process_one_work+0x165/0x480 [ 66.776054] [<ffffffff8109cbab>] worker_thread+0x4b/0x500 [ 66.776056] [<ffffffff8109cb60>] ? process_one_work+0x480/0x480 [ 66.776057] [<ffffffff810a2df8>] kthread+0xd8/0xf0 [ 66.776060] [<ffffffff8183a122>] ret_from_fork+0x22/0x40 [ 66.776061] [<ffffffff810a2d20>] ? kthread_create_on_node+0x1a0/0x1a0 [ 66.776062] ---[ end trace ed04d4a8f32f5114 ]--- [ 88.615001] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun -- 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/1560202 Title: [LENOVO 80LM] suspend/resume failure Status in linux package in Ubuntu: Incomplete Bug description: Lenovo B51 with Ubuntu Mate 16.04, fresh and up to date installed. The system fails to suspend from any known method (dm menu, session menu, pm-suspend). Hard reset required after every attempt. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: linux-image-4.4.0-15-generic 4.4.0-15.31 ProcVersionSignature: Ubuntu 4.4.0-15.31-generic 4.4.6 Uname: Linux 4.4.0-15-generic x86_64 ApportVersion: 2.20-0ubuntu3 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/pcmC0D0p: sergio 1920 F...m pulseaudio /dev/snd/controlC0: sergio 1920 F.... pulseaudio CurrentDesktop: MATE Date: Mon Mar 21 21:12:47 2016 EcryptfsInUse: Yes HibernationDevice: RESUME=UUID=b2e611bd-bf9b-4a08-a32f-f2691d75c3c9 InstallationDate: Installed on 2016-03-21 (0 days ago) InstallationMedia: Ubuntu-MATE 16.04 LTS "Xenial Xerus" - Alpha amd64 (20160224) Lsusb: Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 003: ID 8087:0a2a Intel Corp. Bus 001 Device 002: ID 174f:14f2 Syntek Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: LENOVO 80LM ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-15-generic root=UUID=15117e0b-6e2f-4471-83be-5d0c22689f0f ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-4.4.0-15-generic N/A linux-backports-modules-4.4.0-15-generic N/A linux-firmware 1.157 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 08/12/2015 dmi.bios.vendor: LENOVO dmi.bios.version: D7CN15WW(V1.01) dmi.board.asset.tag: NO Asset Tag dmi.board.name: Lenovo B51-80 dmi.board.vendor: LENOVO dmi.board.version: No DPK dmi.chassis.asset.tag: NO Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Lenovo B51-80 dmi.modalias: dmi:bvnLENOVO:bvrD7CN15WW(V1.01):bd08/12/2015:svnLENOVO:pn80LM:pvrLenovoB51-80:rvnLENOVO:rnLenovoB51-80:rvrNoDPK:cvnLENOVO:ct10:cvrLenovoB51-80: dmi.product.name: 80LM dmi.product.version: Lenovo B51-80 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1560202/+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
