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[Brad Figg <brad.figg@xxxxxxxxxxxxx>]

This bug is missing log files that will aid in diagnosing the problem.
>From a terminal window please run:

apport-collect 1447751

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable
to run this command, please add a comment stating that fact and change
the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.

** Package changed: linux-meta (Ubuntu) => linux (Ubuntu)

** Changed in: linux (Ubuntu)
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/1447751

Title:
  CPU: 0 PID: 2802 at
  /build/buildd/linux-3.19.0/drivers/gpu/drm/i915/intel_display.c:1256
  assert_plane.constprop.87+0x7b/0x90 [i915]()

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  [  396.209024] ------------[ cut here ]------------
  [  396.209071] WARNING: CPU: 0 PID: 2802 at /build/buildd/linux-3.19.0/drivers/gpu/drm/i915/intel_display.c:1256 assert_plane.constprop.87+0x7b/0x90 [i915]()
  [  396.209072] plane A assertion failure (expected on, current off)
  [  396.209103] Modules linked in: veth xt_conntrack ipt_REJECT nf_reject_ipv4 ebtable_filter ebtables pci_stub vboxpci(OE) vboxnetadp(OE) vboxnetflt(OE) ip6table_filter ip6_tables binfmt_misc vboxdrv(OE) xt_CHECKSUM iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack xt_tcpudp iptable_filter ip_tables x_tables bridge stp llc joydev intel_rapl snd_hda_codec_realtek iosf_mbi snd_hda_codec_generic x86_pkg_temp_thermal snd_hda_codec_hdmi intel_powerclamp hid_logitech_hidpp coretemp snd_hda_intel kvm_intel snd_soc_rt5640 snd_hda_controller snd_soc_rl6231 kvm snd_soc_core snd_hda_codec snd_compress snd_hwdep snd_pcm_dmaengine dm_multipath scsi_dh snd_pcm crct10dif_pclmul crc32_pclmul ghash_clmulni_intel snd_seq_midi snd_seq_midi_event
  [  396.209130]  snd_rawmidi aesni_intel i915 aes_x86_64 lrw gf128mul drm_kms_helper glue_helper snd_seq ablk_helper cryptd snd_seq_device snd_timer drm snd i2c_algo_bit mei_me lpc_ich mei soundcore mac_hid nuvoton_cir dw_dmac rc_core 8250_dw i2c_hid dw_dmac_core i2c_designware_platform video i2c_designware_core snd_soc_sst_acpi spi_pxa2xx_platform hid_generic parport_pc ppdev lp parport autofs4 hid_logitech_dj usbhid hid btrfs xor raid6_pq e1000e ptp pps_core ahci libahci sdhci_acpi sdhci [last unloaded: vmw_vmci]
  [  396.209134] CPU: 0 PID: 2802 Comm: Xorg Tainted: G           OE  3.19.0-15-generic #15-Ubuntu
  [  396.209135] Hardware name:                  /D54250WYK, BIOS WYLPT10H.86A.0035.2015.0126.1814 01/26/2015
  [  396.209138]  ffffffffc0758e10 ffff8803fbd0b728 ffffffff817c2205 000000008afa8afa
  [  396.209140]  ffff8803fbd0b778 ffff8803fbd0b768 ffffffff8107595a 0000000000000000
  [  396.209142]  0000000000000000 ffff8800c87ec000 ffff8800c9417000 ffff8800c9417000
  [  396.209143] Call Trace:
  [  396.209152]  [<ffffffff817c2205>] dump_stack+0x45/0x57
  [  396.209156]  [<ffffffff8107595a>] warn_slowpath_common+0x8a/0xc0
  [  396.209159]  [<ffffffff810759d6>] warn_slowpath_fmt+0x46/0x50
  [  396.209188]  [<ffffffffc06f552b>] assert_plane.constprop.87+0x7b/0x90 [i915]
  [  396.209213]  [<ffffffffc06fd6a1>] hsw_disable_ips+0x41/0x190 [i915]
  [  396.209235]  [<ffffffffc06fda68>] intel_crtc_disable_planes+0x48/0x140 [i915]
  [  396.209255]  [<ffffffffc06fe7cf>] haswell_crtc_disable+0x4f/0x3c0 [i915]
  [  396.209281]  [<ffffffffc06ff769>] __intel_set_mode+0xa59/0xc80 [i915]
  [  396.209309]  [<ffffffffc070633b>] intel_crtc_set_config+0xbfb/0xf70 [i915]
  [  396.209331]  [<ffffffffc05c9e36>] drm_mode_set_config_internal+0x66/0x100 [drm]
  [  396.209343]  [<ffffffffc0675d18>] restore_fbdev_mode+0xc8/0xf0 [drm_kms_helper]
  [  396.209354]  [<ffffffffc0677d89>] drm_fb_helper_restore_fbdev_mode_unlocked+0x29/0x80 [drm_kms_helper]
  [  396.209365]  [<ffffffffc0677e02>] drm_fb_helper_set_par+0x22/0x50 [drm_kms_helper]
  [  396.209391]  [<ffffffffc071229a>] intel_fbdev_set_par+0x1a/0x60 [i915]
  [  396.209395]  [<ffffffff814339da>] fb_set_var+0x18a/0x410
  [  396.209426]  [<ffffffffc03e6aad>] ? btrfs_get_token_32+0x5d/0x120 [btrfs]
  [  396.209430]  [<ffffffff8142a409>] fbcon_blank+0x229/0x300
  [  396.209456]  [<ffffffffc03f12a3>] ? free_extent_buffer+0x53/0xb0 [btrfs]
  [  396.209461]  [<ffffffff814ba03a>] do_unblank_screen+0xba/0x1f0
  [  396.209467]  [<ffffffff814b0faa>] vt_ioctl+0x13ea/0x1460
  [  396.209472]  [<ffffffff814a2df1>] tty_ioctl+0x411/0xcb0
  [  396.209477]  [<ffffffff8119cf21>] ? kzfree+0x31/0x40
  [  396.209482]  [<ffffffff811d476e>] ? kfree+0x13e/0x150
  [  396.209485]  [<ffffffff8120b4ca>] ? dput+0x2a/0x1c0
  [  396.209488]  [<ffffffff81207b40>] do_vfs_ioctl+0x2e0/0x4e0
  [  396.209492]  [<ffffffff811f514e>] ? ____fput+0xe/0x10
  [  396.209496]  [<ffffffff81092d0c>] ? task_work_run+0xbc/0xf0
  [  396.209498]  [<ffffffff81207dc1>] SyS_ioctl+0x81/0xa0
  [  396.209503]  [<ffffffff817c934d>] system_call_fastpath+0x16/0x1b
  [  396.209504] ---[ end trace fe3c0fa6d5597c72 ]---

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