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[Bug 1523088]

To: desktop-packages@xxxxxxxxxxxxxxxxxxx
From: Kai Iskratsch <1523088@xxxxxxxxxxxxxxxxxx>
Date: Tue, 15 Dec 2015 11:44:01 -0000
Reply-to: Bug 1523088 <1523088@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
the previous warnings are gone but now i had these 2 warnings when
coming back from lunch, so guess it happened during turning the displays
back on from sleep state.

Dec 15 12:38:18 linux-k058 kernel: ------------[ cut here ]------------
Dec 15 12:38:18 linux-k058 kernel: WARNING: CPU: 5 PID: 2097 at ../drivers/gpu/drm/i915/intel_display.c:12949 intel_modeset_check_state+0x573/0x8e0 [i915]()
Dec 15 12:38:18 linux-k058 kernel: pipe state doesn't match!
Dec 15 12:38:18 linux-k058 kernel: Modules linked in: cmac rfcomm ecb ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter ip_tables x_tables ppdev parport_pc parport fuse vmw_vsock_vmci_transport vsock vmw_vmci af_packet bnep xfs libcrc32c nls_iso8859_1 nls_cp437 vfat fat arc4 snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel x86_pkg_temp_thermal intel_powerclamp snd_hda_codec coretemp snd_hda_core snd_hwdep kvm_intel iwlmvm snd_pcm kvm mac80211 snd_timer irqbypass crct10dif_pclmul iwlwifi crc32_pclmul ghash_clmulni_intel snd aesni_intel btusb hci_uart aes_x86_64 btrtl btqca btbcm lrw gf128mul cfg80211 glue_helper btintel pcspkr ablk_helper soundcore i2c_i801 shpchp cryptd bluetooth rfkill battery wmi pinctrl_sunrisepoint pinctrl_intel intel_lpss_acpi intel_lpss mei_me mfd_core
Dec 15 12:38:18 linux-k058 kernel:  tpm_crb mei acpi_als kfifo_buf acpi_pad tpm_tis industrialio fan thermal tpm btrfs xor raid6_pq hid_generic usbhid crc32c_intel serio_raw e1000e i915 igb dca ptp pps_core i2c_algo_bit drm_kms_helper syscopyarea sysfillrect xhci_pci sysimgblt fb_sys_fops xhci_hcd usbcore drm usb_common video i2c_hid button fjes dm_mirror dm_region_hash dm_log dm_mod sg efivarfs
Dec 15 12:38:18 linux-k058 kernel: CPU: 5 PID: 2097 Comm: X Tainted: G        W       4.4.0-rc4-next-20151211-1.g34634ae-vanilla #1
Dec 15 12:38:18 linux-k058 kernel: Hardware name: Gigabyte Technology Co., Ltd. To be filled by O.E.M./Z170N-WIFI-CF, BIOS F4 09/04/2015
Dec 15 12:38:18 linux-k058 kernel:  ffffffffa02fe918 ffff880447ebfb10 ffffffff8138ebc2 ffff880447ebfb58
Dec 15 12:38:18 linux-k058 kernel:  ffff880447ebfb48 ffffffff8107e7d6 ffff88041cae5000 ffff88045e6d9000
Dec 15 12:38:18 linux-k058 kernel:  ffff88045e5d1b48 ffff88007c9fdc00 ffff88045a669400 ffff880447ebfba8
Dec 15 12:38:18 linux-k058 kernel: Call Trace:
Dec 15 12:38:18 linux-k058 kernel:  [<ffffffff8138ebc2>] dump_stack+0x4b/0x79
Dec 15 12:38:18 linux-k058 kernel:  [<ffffffff8107e7d6>] warn_slowpath_common+0x86/0xc0
Dec 15 12:38:18 linux-k058 kernel:  [<ffffffff8107e85c>] warn_slowpath_fmt+0x4c/0x50
Dec 15 12:38:18 linux-k058 kernel:  [<ffffffffa0290973>] intel_modeset_check_state+0x573/0x8e0 [i915]
Dec 15 12:38:18 linux-k058 kernel:  [<ffffffffa029c513>] intel_atomic_commit+0x883/0xa00 [i915]
Dec 15 12:38:18 linux-k058 kernel:  [<ffffffffa00974a0>] ? drm_atomic_set_crtc_for_connector+0x20/0x90 [drm]
Dec 15 12:38:18 linux-k058 kernel:  [<ffffffffa0098137>] drm_atomic_commit+0x37/0x60 [drm]
Dec 15 12:38:18 linux-k058 kernel:  [<ffffffffa019dce7>] drm_atomic_helper_set_config+0x77/0xb0 [drm_kms_helper]
Dec 15 12:38:18 linux-k058 kernel:  [<ffffffffa00877f4>] drm_mode_set_config_internal+0x64/0x100 [drm]
Dec 15 12:38:18 linux-k058 kernel:  [<ffffffffa008b79d>] drm_mode_setcrtc+0xdd/0x4f0 [drm]
Dec 15 12:38:18 linux-k058 kernel:  [<ffffffffa007d94d>] drm_ioctl+0x25d/0x4f0 [drm]
Dec 15 12:38:18 linux-k058 kernel:  [<ffffffffa008b6c0>] ? drm_mode_setplane+0x1c0/0x1c0 [drm]
Dec 15 12:38:18 linux-k058 kernel:  [<ffffffff812197f4>] do_vfs_ioctl+0x304/0x4f0
Dec 15 12:38:18 linux-k058 kernel:  [<ffffffff81223227>] ? __fget+0x77/0xb0
Dec 15 12:38:18 linux-k058 kernel:  [<ffffffff81219a59>] SyS_ioctl+0x79/0x90
Dec 15 12:38:18 linux-k058 kernel:  [<ffffffff816bc276>] entry_SYSCALL_64_fastpath+0x16/0x75
Dec 15 12:38:18 linux-k058 kernel: ---[ end trace c1111c5763966e77 ]---
Dec 15 12:38:18 linux-k058 kernel: ------------[ cut here ]------------
Dec 15 12:38:18 linux-k058 kernel: WARNING: CPU: 5 PID: 2097 at ../drivers/gpu/drm/i915/intel_display.c:13003 check_shared_dpll_state+0x213/0x440 [i915]()
Dec 15 12:38:18 linux-k058 kernel: pll hw state mismatch
Dec 15 12:38:18 linux-k058 kernel: Modules linked in: cmac rfcomm ecb ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter ip_tables x_tables ppdev parport_pc parport fuse vmw_vsock_vmci_transport vsock vmw_vmci af_packet bnep xfs libcrc32c nls_iso8859_1 nls_cp437 vfat fat arc4 snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel x86_pkg_temp_thermal intel_powerclamp snd_hda_codec coretemp snd_hda_core snd_hwdep kvm_intel iwlmvm snd_pcm kvm mac80211 snd_timer irqbypass crct10dif_pclmul iwlwifi crc32_pclmul ghash_clmulni_intel snd aesni_intel btusb hci_uart aes_x86_64 btrtl btqca btbcm lrw gf128mul cfg80211 glue_helper btintel pcspkr ablk_helper soundcore i2c_i801 shpchp cryptd bluetooth rfkill battery wmi pinctrl_sunrisepoint pinctrl_intel intel_lpss_acpi intel_lpss mei_me mfd_core
Dec 15 12:38:18 linux-k058 kernel:  tpm_crb mei acpi_als kfifo_buf acpi_pad tpm_tis industrialio fan thermal tpm btrfs xor raid6_pq hid_generic usbhid crc32c_intel serio_raw e1000e i915 igb dca ptp pps_core i2c_algo_bit drm_kms_helper syscopyarea sysfillrect xhci_pci sysimgblt fb_sys_fops xhci_hcd usbcore drm usb_common video i2c_hid button fjes dm_mirror dm_region_hash dm_log dm_mod sg efivarfs
Dec 15 12:38:18 linux-k058 kernel: CPU: 5 PID: 2097 Comm: X Tainted: G        W       4.4.0-rc4-next-20151211-1.g34634ae-vanilla #1
Dec 15 12:38:18 linux-k058 kernel: Hardware name: Gigabyte Technology Co., Ltd. To be filled by O.E.M./Z170N-WIFI-CF, BIOS F4 09/04/2015
Dec 15 12:38:18 linux-k058 kernel:  ffffffffa02fe918 ffff880447ebfa70 ffffffff8138ebc2 ffff880447ebfab8
Dec 15 12:38:18 linux-k058 kernel:  ffff880447ebfaa8 ffffffff8107e7d6 ffff88045cc291e8 0000000000000001
Dec 15 12:38:18 linux-k058 kernel:  0000000000000001 ffff88045cc20000 ffff88045e5d1b78 ffff880447ebfb08
Dec 15 12:38:18 linux-k058 kernel: Call Trace:
Dec 15 12:38:18 linux-k058 kernel:  [<ffffffff8138ebc2>] dump_stack+0x4b/0x79
Dec 15 12:38:18 linux-k058 kernel:  [<ffffffff8107e7d6>] warn_slowpath_common+0x86/0xc0
Dec 15 12:38:18 linux-k058 kernel:  [<ffffffff8107e85c>] warn_slowpath_fmt+0x4c/0x50
Dec 15 12:38:18 linux-k058 kernel:  [<ffffffffa02b76af>] ? skl_ddi_pll_get_hw_state+0xcf/0xe0 [i915]
Dec 15 12:38:18 linux-k058 kernel:  [<ffffffffa0288be3>] check_shared_dpll_state+0x213/0x440 [i915]
Dec 15 12:38:18 linux-k058 kernel:  [<ffffffff8107e7e5>] ? warn_slowpath_common+0x95/0xc0
Dec 15 12:38:18 linux-k058 kernel:  [<ffffffffa0290766>] intel_modeset_check_state+0x366/0x8e0 [i915]
Dec 15 12:38:18 linux-k058 kernel:  [<ffffffffa029c513>] intel_atomic_commit+0x883/0xa00 [i915]
Dec 15 12:38:18 linux-k058 kernel:  [<ffffffffa00974a0>] ? drm_atomic_set_crtc_for_connector+0x20/0x90 [drm]
Dec 15 12:38:18 linux-k058 kernel:  [<ffffffffa0098137>] drm_atomic_commit+0x37/0x60 [drm]
Dec 15 12:38:18 linux-k058 kernel:  [<ffffffffa019dce7>] drm_atomic_helper_set_config+0x77/0xb0 [drm_kms_helper]
Dec 15 12:38:18 linux-k058 kernel:  [<ffffffffa00877f4>] drm_mode_set_config_internal+0x64/0x100 [drm]
Dec 15 12:38:18 linux-k058 kernel:  [<ffffffffa008b79d>] drm_mode_setcrtc+0xdd/0x4f0 [drm]
Dec 15 12:38:18 linux-k058 kernel:  [<ffffffffa007d94d>] drm_ioctl+0x25d/0x4f0 [drm]
Dec 15 12:38:18 linux-k058 kernel:  [<ffffffffa008b6c0>] ? drm_mode_setplane+0x1c0/0x1c0 [drm]
Dec 15 12:38:18 linux-k058 kernel:  [<ffffffff812197f4>] do_vfs_ioctl+0x304/0x4f0
Dec 15 12:38:18 linux-k058 kernel:  [<ffffffff81223227>] ? __fget+0x77/0xb0
Dec 15 12:38:18 linux-k058 kernel:  [<ffffffff81219a59>] SyS_ioctl+0x79/0x90
Dec 15 12:38:18 linux-k058 kernel:  [<ffffffff816bc276>] entry_SYSCALL_64_fastpath+0x16/0x75
Dec 15 12:38:18 linux-k058 kernel: ---[ end trace c1111c5763966e78 ]---
D

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https://bugs.launchpad.net/bugs/1523088

Title:
  WARN_ON(!wm_changed) warning and stacktrace in kernel log

Status in X.Org X server:
  Fix Released
Status in xorg-server package in Ubuntu:
  Confirmed

Bug description:
  I always get an warning and stacktrace (and it seems to hang a little
  bit). This occurs after reboot as well as when I move with the cursor
  between my hdmi monitor and my laptop. (This only occurs when HDMI is
  connected)

  Default Kubuntu install version 15.10 with kernel 4.2.0-19-generic
  Processor: i5 6300hq
  Graphics: gtx950m

  WARNING: CPU: 1 PID: 827 at /build/linux-26_gwp/linux-4.2.0/drivers/gpu/drm/i915/intel_pm.c:3404 skl_update_other_pipe_wm+0x1de/0x1f0 [i915]()
  [Sam Dez  5 12:34:46 2015] WARN_ON(!wm_changed)
  [Sam Dez  5 12:34:46 2015] Modules linked in:
  [Sam Dez  5 12:34:46 2015]  nls_iso8859_1 pci_stub vboxpci(OE) vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) drbg ansi_cprng ctr ccm rfcomm bnep arc4 rtsx_usb_ms memstick i2c_designware_platform i2c_designware_core acer_wmi sparse_keymap snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core intel_rapl snd_hwdep iosf_mbi x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm snd_pcm snd_seq_midi snd_seq_midi_event snd_rawmidi snd_seq crct10dif_pclmul crc32_pclmul aesni_intel aes_x86_64 lrw gf128mul snd_seq_device glue_helper snd_timer ablk_helper cryptd ath10k_pci ath10k_core snd ath mac80211 serio_raw soundcore idma64 virt_dma cfg80211 joydev input_leds uvcvideo mei_me videobuf2_vmalloc videobuf2_memops mei videobuf2_core v4l2_common intel_lpss_pci videodev media
  [Sam Dez  5 12:34:46 2015]  btusb btrtl btbcm btintel bluetooth shpchp dell_smo8800 intel_lpss_acpi intel_lpss tpm_crb acpi_pad mac_hid parport_pc ppdev lp parport autofs4 hid_generic hid_logitech_hidpp hid_logitech_dj usbhid rtsx_usb_sdmmc rtsx_usb uas usb_storage nouveau i915 mxm_wmi ttm i2c_algo_bit drm_kms_helper r8169 mii drm ahci libahci i2c_hid hid wmi pinctrl_sunrisepoint video pinctrl_intel
  [Sam Dez  5 12:34:46 2015] CPU: 1 PID: 827 Comm: Xorg Tainted: G        W  OE   4.2.0-19-generic #23-Ubuntu
  [Sam Dez  5 12:34:46 2015] Hardware name: Acer Aspire V5-591G/Usopp_SLS, BIOS V1.03 10/23/2015
  [Sam Dez  5 12:34:46 2015]  0000000000000000 00000000a287b8f0 ffff880071b03518 ffffffff817e93f9
  [Sam Dez  5 12:34:46 2015]  0000000000000000 ffff880071b03570 ffff880071b03558 ffffffff8107b3d6
  [Sam Dez  5 12:34:46 2015]  ffff880071b03620 ffff880071b036c4 ffff880279bf2000 ffff880279bf7000
  [Sam Dez  5 12:34:46 2015] Call Trace:
  [Sam Dez  5 12:34:46 2015]  [<ffffffff817e93f9>] dump_stack+0x45/0x57
  [Sam Dez  5 12:34:46 2015]  [<ffffffff8107b3d6>] warn_slowpath_common+0x86/0xc0
  [Sam Dez  5 12:34:46 2015]  [<ffffffff8107b465>] warn_slowpath_fmt+0x55/0x70
  [Sam Dez  5 12:34:46 2015]  [<ffffffffc017eb9e>] skl_update_other_pipe_wm+0x1de/0x1f0 [i915]
  [Sam Dez  5 12:34:46 2015]  [<ffffffffc017ed6b>] skl_update_wm+0x1bb/0x740 [i915]
  [Sam Dez  5 12:34:46 2015]  [<ffffffffc01ca837>] ? gen9_read32+0xf7/0x2d0 [i915]
  [Sam Dez  5 12:34:46 2015]  [<ffffffffc01b32a2>] ? i915_get_vblank_timestamp+0x62/0xa0 [i915]
  [Sam Dez  5 12:34:46 2015]  [<ffffffffc01824be>] intel_update_watermarks+0x1e/0x30 [i915]
  [Sam Dez  5 12:34:46 2015]  [<ffffffffc01e5ad9>] intel_finish_crtc_commit+0x169/0x190 [i915]
  [Sam Dez  5 12:34:46 2015]  [<ffffffffc00f3793>] drm_atomic_helper_commit_planes_on_crtc+0x143/0x260 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [<ffffffffc01fee3b>] intel_atomic_commit+0x6b/0x100 [i915]
  [Sam Dez  5 12:34:46 2015]  [<ffffffffc0094d47>] drm_atomic_commit+0x37/0x60 [drm]
  [Sam Dez  5 12:34:46 2015]  [<ffffffffc00f20cf>] drm_atomic_helper_disable_plane+0xef/0x130 [drm_kms_helper]
  [Sam Dez  5 12:34:46 2015]  [<ffffffffc008493a>] __setplane_internal+0x23a/0x2f0 [drm]
  [Sam Dez  5 12:34:46 2015]  [<ffffffffc0084b1b>] drm_mode_cursor_universal+0x12b/0x210 [drm]
  [Sam Dez  5 12:34:46 2015]  [<ffffffff817edf2f>] ? __ww_mutex_lock+0x5f/0xa0
  [Sam Dez  5 12:34:46 2015]  [<ffffffffc0084c81>] drm_mode_cursor_common+0x81/0x180 [drm]
  [Sam Dez  5 12:34:46 2015]  [<ffffffffc0088ca0>] drm_mode_cursor_ioctl+0x50/0x70 [drm]
  [Sam Dez  5 12:34:46 2015]  [<ffffffffc0079495>] drm_ioctl+0x125/0x610 [drm]
  [Sam Dez  5 12:34:46 2015]  [<ffffffffc0088c50>] ? drm_mode_setcrtc+0x500/0x500 [drm]
  [Sam Dez  5 12:34:46 2015]  [<ffffffff81210a25>] do_vfs_ioctl+0x295/0x480
  [Sam Dez  5 12:34:46 2015]  [<ffffffff81087f71>] ? __set_task_blocked+0x41/0xa0
  [Sam Dez  5 12:34:46 2015]  [<ffffffff81210c89>] SyS_ioctl+0x79/0x90
  [Sam Dez  5 12:34:46 2015]  [<ffffffff817f01f2>] entry_SYSCALL_64_fastpath+0x16/0x75
  [Sam Dez  5 12:34:46 2015] ---[ end trace c72c2dc92b88cd01 ]---

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: xserver-xorg-core 2:1.17.2-1ubuntu9.1
  ProcVersionSignature: Ubuntu 4.2.0-19.23-generic 4.2.6
  Uname: Linux 4.2.0-19-generic x86_64
  ApportVersion: 2.19.1-0ubuntu5
  Architecture: amd64
  Date: Sat Dec  5 12:35:24 2015
  ExecutablePath: /usr/bin/Xorg
  InstallationDate: Installed on 2015-12-04 (0 days ago)
  InstallationMedia: Kubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
  SourcePackage: xorg-server
  UpgradeStatus: No upgrade log present (probably fresh install)

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References

[Bug 1523088] [NEW] WARN_ON(!wm_changed) warning and stacktrace in kernel log
From: dan, 2015-12-05