Kevin, in order to allow additional upstream developers to examine the issue, 
at your earliest convenience, could you please test the latest upstream kernel 
available from http://kernel.ubuntu.com/~kernel-ppa/mainline/?C=N;O=D ? Please 
keep in mind the following:
1) The one to test is at the very top line at the top of the page (not the 
daily folder).
2) The release names are irrelevant.
3) The folder time stamps aren't indicative of when the kernel actually was 
released upstream.
4) Install instructions are available at 
https://wiki.ubuntu.com/Kernel/MainlineBuilds .

If testing on your main install would be inconvenient, one may:
1) Install Ubuntu to a different partition and then test this there.
2) Backup, or clone the primary install.

If the latest kernel did not allow you to test to the issue (ex. you couldn't 
boot into the OS) please make a comment in your report about this, and continue 
to test the next most recent kernel version until you can test to the issue. 
Once you've tested the upstream kernel, please comment on which kernel version 
specifically you tested. If this issue is fixed in the mainline kernel, please 
add the following tags by clicking on the yellow circle with a black pencil 
icon, next to the word Tags, located at the bottom of the report description:
kernel-fixed-upstream
kernel-fixed-upstream-X.Y-rcZ

Where X, and Y are the first two numbers of the kernel version, and Z is
the release candidate number if it exists.

If the mainline kernel does not fix the issue, please add the following tags:
kernel-bug-exists-upstream
kernel-bug-exists-upstream-X.Y-rcZ

Please note, an error to install the kernel does not fit the criteria of
kernel-bug-exists-upstream.

Also, you don't need to apport-collect further unless specifically
requested to do so.

Once testing of the latest upstream kernel is complete, please mark this
report Status New. Please let us know your results.

Thank you for your help.

-- 
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to xorg in Ubuntu.
https://bugs.launchpad.net/bugs/1589893

Title:
  Xorg crashes

Status in xorg package in Ubuntu:
  Incomplete

Bug description:
  Jun  7 11:40:18 kevin-MacBookPro kernel: [ 6818.471186] Freezing of tasks 
failed after 20.007 seconds (1 tasks refusing to freeze, wq_busy=0):
  Jun  7 11:40:18 kevin-MacBookPro kernel: [ 6818.471220] Xorg            D 
ffff880089ccfa78     0  1109   1099 0x00400004
  Jun  7 11:40:18 kevin-MacBookPro kernel: [ 6818.471230]  ffff880089ccfa78 
ffffffff812cbfa8 ffff880264d99b80 ffff88025d450000
  Jun  7 11:40:18 kevin-MacBookPro kernel: [ 6818.471237]  ffff880089cd0000 
ffff880089ccfab0 ffff88026ec8dd00 ffff88026ec8dd00
  Jun  7 11:40:18 kevin-MacBookPro kernel: [ 6818.471242]  0000000000000001 
ffff880089ccfa90 ffffffff81821205 000000010018eca0
  Jun  7 11:40:18 kevin-MacBookPro kernel: [ 6818.471248] Call Trace:
  Jun  7 11:40:18 kevin-MacBookPro kernel: [ 6818.471263]  [<ffffffff812cbfa8>] 
? __ext4_handle_dirty_metadata+0x48/0x1f0
  Jun  7 11:40:18 kevin-MacBookPro kernel: [ 6818.471272]  [<ffffffff81821205>] 
schedule+0x35/0x80
  Jun  7 11:40:18 kevin-MacBookPro kernel: [ 6818.471278]  [<ffffffff81824299>] 
schedule_timeout+0x129/0x270
  Jun  7 11:40:18 kevin-MacBookPro kernel: [ 6818.471287]  [<ffffffff810ec370>] 
? trace_event_raw_event_tick_stop+0x120/0x120
  Jun  7 11:40:18 kevin-MacBookPro kernel: [ 6818.471370]  [<ffffffffc0182ee6>] 
intel_crtc_wait_for_pending_flips+0xa6/0x240 [i915]
  Jun  7 11:40:18 kevin-MacBookPro kernel: [ 6818.471378]  [<ffffffff810c3a70>] 
? wake_atomic_t_function+0x60/0x60
  Jun  7 11:40:18 kevin-MacBookPro kernel: [ 6818.471425]  [<ffffffffc0184291>] 
intel_pre_plane_update+0x111/0x140 [i915]
  Jun  7 11:40:18 kevin-MacBookPro kernel: [ 6818.471469]  [<ffffffffc0184a62>] 
intel_atomic_commit+0x352/0x6f0 [i915]
  Jun  7 11:40:18 kevin-MacBookPro kernel: [ 6818.471520]  [<ffffffffc004880e>] 
? drm_atomic_check_only+0x18e/0x590 [drm]
  Jun  7 11:40:18 kevin-MacBookPro kernel: [ 6818.471551]  [<ffffffffc0048c47>] 
drm_atomic_commit+0x37/0x60 [drm]
  Jun  7 11:40:18 kevin-MacBookPro kernel: [ 6818.471575]  [<ffffffffc00dd579>] 
drm_atomic_helper_disable_plane+0xa9/0xf0 [drm_kms_helper]
  Jun  7 11:40:18 kevin-MacBookPro kernel: [ 6818.471605]  [<ffffffffc00381d9>] 
__setplane_internal+0x169/0x250 [drm]
  Jun  7 11:40:18 kevin-MacBookPro kernel: [ 6818.471638]  [<ffffffffc004746a>] 
? drm_modeset_lock_all_ctx+0x9a/0xb0 [drm]
  Jun  7 11:40:18 kevin-MacBookPro kernel: [ 6818.471669]  [<ffffffffc003bed6>] 
drm_mode_setplane+0x136/0x1b0 [drm]
  Jun  7 11:40:18 kevin-MacBookPro kernel: [ 6818.471692]  [<ffffffffc002d712>] 
drm_ioctl+0x152/0x540 [drm]
  Jun  7 11:40:18 kevin-MacBookPro kernel: [ 6818.471719]  [<ffffffffc003bda0>] 
? drm_plane_check_pixel_format+0x50/0x50 [drm]
  Jun  7 11:40:18 kevin-MacBookPro kernel: [ 6818.471726]  [<ffffffff8122026f>] 
do_vfs_ioctl+0x29f/0x490
  Jun  7 11:40:18 kevin-MacBookPro kernel: [ 6818.471734]  [<ffffffff8120eee1>] 
? __sb_end_write+0x21/0x30
  Jun  7 11:40:18 kevin-MacBookPro kernel: [ 6818.471740]  [<ffffffff8120caed>] 
? vfs_write+0x15d/0x1a0
  Jun  7 11:40:18 kevin-MacBookPro kernel: [ 6818.471744]  [<ffffffff812204d9>] 
SyS_ioctl+0x79/0x90
  Jun  7 11:40:18 kevin-MacBookPro kernel: [ 6818.471753]  [<ffffffff818252f2>] 
entry_SYSCALL_64_fastpath+0x16/0x71
  Jun  7 11:40:18 kevin-MacBookPro kernel: [ 6818.471857]
  Jun  7 11:40:18 kevin-MacBookPro kernel: [ 6818.471860] Restarting tasks ... 
done.

  
  Jun  7 11:41:55 kevin-MacBookPro kernel: [ 6833.433922] ------------[ cut 
here ]------------
  Jun  7 11:41:55 kevin-MacBookPro kernel: [ 6833.434020] WARNING: CPU: 2 PID: 
1109 at 
/build/linux-FvcHlK/linux-4.4.0/drivers/gpu/drm/i915/intel_display.c:3963 
intel_crtc_wait_for_pending_flips+0x1e2/0x240 [i915]()
  Jun  7 11:41:55 kevin-MacBookPro kernel: [ 6833.434025] 
WARN_ON(wait_event_timeout(dev_priv->pending_flip_queue, 
!intel_crtc_has_pending_flip(crtc), 60*HZ) == 0)
  Jun  7 11:41:55 kevin-MacBookPro kernel: [ 6833.434028] Modules linked in: 
drbg ansi_cprng nvram rfcomm cdc_ether usbnet r8152 mii bnep 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 
joydev input_leds btusb btrtl pci_stub btbcm btintel bluetooth vboxpci(OE) 
bcm5974 vboxnetadp(OE) vboxnetflt(OE) bridge vboxdrv(OE) stp llc iptable_filter 
msr ip_tables x_tables nls_iso8859_1 applesmc input_polldev 
snd_hda_codec_cirrus snd_hda_codec_hdmi snd_hda_codec_generic brcmfmac brcmutil 
cfg80211 thunderbolt intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp 
bdc_pci kvm_intel kvm irqbypass crct10dif_pclmul crc32_pclmul aesni_intel 
aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd snd_hda_intel 
snd_hda_codec snd_hda_core snd_hwdep snd_pcm snd_seq_midi snd_seq_midi_event 
snd_rawmidi intel_pch_thermal snd_seq lpc_ich snd_seq_device snd_timer snd 
mei_me mei shpchp soundcore sbs sbshc a
 cpi_als kfifo_buf industrialio spi_pxa2xx_platform apple_bl mac_hid parport_pc 
ppdev lp parport autofs4 hid_generic hid_apple usbhid hid uas usb_storage i915 
i2c_algo_bit drm_kms_helper syscopyarea sysfillrect ahci sysimgblt fb_sys_fops 
libahci drm fjes video [last unloaded: videobuf2_memops]
  Jun  7 11:41:55 kevin-MacBookPro kernel: [ 6833.434173] CPU: 2 PID: 1109 
Comm: Xorg Tainted: G        W  OE   4.4.0-22-generic #40-Ubuntu
  Jun  7 11:41:55 kevin-MacBookPro kernel: [ 6833.434178] Hardware name: Apple 
Inc. MacBookPro12,1/Mac-E43C1C25D4880AD6, BIOS MBP121.88Z.0167.B14.1509281135 
09/28/2015
  Jun  7 11:41:55 kevin-MacBookPro kernel: [ 6833.434181]  0000000000000286 
000000008360a8de ffff880089ccfaa0 ffffffff813e9c53
  Jun  7 11:41:55 kevin-MacBookPro kernel: [ 6833.434188]  ffff880089ccfae8 
ffffffffc01e8a50 ffff880089ccfad8 ffffffff81080fb2
  Jun  7 11:41:55 kevin-MacBookPro kernel: [ 6833.434194]  ffff880264fc21a8 
ffff88025f7b9008 ffff88025f94a000 ffff880264fc2000
  Jun  7 11:41:55 kevin-MacBookPro kernel: [ 6833.434199] Call Trace:
  Jun  7 11:41:55 kevin-MacBookPro kernel: [ 6833.434212]  [<ffffffff813e9c53>] 
dump_stack+0x63/0x90
  Jun  7 11:41:55 kevin-MacBookPro kernel: [ 6833.434221]  [<ffffffff81080fb2>] 
warn_slowpath_common+0x82/0xc0
  Jun  7 11:41:55 kevin-MacBookPro kernel: [ 6833.434226]  [<ffffffff8108104c>] 
warn_slowpath_fmt+0x5c/0x80
  Jun  7 11:41:55 kevin-MacBookPro kernel: [ 6833.434234]  [<ffffffff810c35d5>] 
? finish_wait+0x55/0x70
  Jun  7 11:41:55 kevin-MacBookPro kernel: [ 6833.434289]  [<ffffffffc0183022>] 
intel_crtc_wait_for_pending_flips+0x1e2/0x240 [i915]
  Jun  7 11:41:55 kevin-MacBookPro kernel: [ 6833.434296]  [<ffffffff810c3a70>] 
? wake_atomic_t_function+0x60/0x60
  Jun  7 11:41:55 kevin-MacBookPro kernel: [ 6833.434345]  [<ffffffffc0184291>] 
intel_pre_plane_update+0x111/0x140 [i915]
  Jun  7 11:41:55 kevin-MacBookPro kernel: [ 6833.434390]  [<ffffffffc0184a62>] 
intel_atomic_commit+0x352/0x6f0 [i915]
  Jun  7 11:41:55 kevin-MacBookPro kernel: [ 6833.434441]  [<ffffffffc004880e>] 
? drm_atomic_check_only+0x18e/0x590 [drm]
  Jun  7 11:41:55 kevin-MacBookPro kernel: [ 6833.434473]  [<ffffffffc0048c47>] 
drm_atomic_commit+0x37/0x60 [drm]
  Jun  7 11:41:55 kevin-MacBookPro kernel: [ 6833.434497]  [<ffffffffc00dd579>] 
drm_atomic_helper_disable_plane+0xa9/0xf0 [drm_kms_helper]
  Jun  7 11:41:55 kevin-MacBookPro kernel: [ 6833.434529]  [<ffffffffc00381d9>] 
__setplane_internal+0x169/0x250 [drm]
  Jun  7 11:41:55 kevin-MacBookPro kernel: [ 6833.434566]  [<ffffffffc004746a>] 
? drm_modeset_lock_all_ctx+0x9a/0xb0 [drm]
  Jun  7 11:41:55 kevin-MacBookPro kernel: [ 6833.434602]  [<ffffffffc003bed6>] 
drm_mode_setplane+0x136/0x1b0 [drm]
  Jun  7 11:41:55 kevin-MacBookPro kernel: [ 6833.434627]  [<ffffffffc002d712>] 
drm_ioctl+0x152/0x540 [drm]
  Jun  7 11:41:55 kevin-MacBookPro kernel: [ 6833.434661]  [<ffffffffc003bda0>] 
? drm_plane_check_pixel_format+0x50/0x50 [drm]
  Jun  7 11:41:55 kevin-MacBookPro kernel: [ 6833.434669]  [<ffffffff8122026f>] 
do_vfs_ioctl+0x29f/0x490
  Jun  7 11:41:55 kevin-MacBookPro kernel: [ 6833.434678]  [<ffffffff8120eee1>] 
? __sb_end_write+0x21/0x30
  Jun  7 11:41:55 kevin-MacBookPro kernel: [ 6833.434685]  [<ffffffff8120caed>] 
? vfs_write+0x15d/0x1a0
  Jun  7 11:41:55 kevin-MacBookPro kernel: [ 6833.434690]  [<ffffffff812204d9>] 
SyS_ioctl+0x79/0x90
  Jun  7 11:41:55 kevin-MacBookPro kernel: [ 6833.434699]  [<ffffffff818252f2>] 
entry_SYSCALL_64_fastpath+0x16/0x71
  Jun  7 11:41:55 kevin-MacBookPro kernel: [ 6833.434704] ---[ end trace 
05cdc12722f610c5 ]---
  Jun  7 11:41:55 kevin-MacBookPro kernel: [ 6833.542139] (elapsed 15.025 
seconds) done.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: xorg 1:7.7+13ubuntu3
  ProcVersionSignature: Ubuntu 4.4.0-22.40-generic 4.4.8
  Uname: Linux 4.4.0-22-generic x86_64
  .tmp.unity_support_test.0:
   
  ApportVersion: 2.20.1-0ubuntu2.1
  Architecture: amd64
  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: Tue Jun  7 11:44:42 2016
  DistUpgraded: 2016-04-06 11:18:43,052 ERROR got error from PostInstallScript 
./xorg_fix_proprietary.py (g-exec-error-quark: Failed to execute child process 
"./xorg_fix_proprietary.py" (No such file or directory) (8))
  DistroCodename: xenial
  DistroVariant: ubuntu
  DkmsStatus:
   virtualbox, 5.0.18, 4.4.0-21-generic, x86_64: installed
   virtualbox, 5.0.18, 4.4.0-22-generic, x86_64: installed
  EcryptfsInUse: Yes
  ExtraDebuggingInterest: Yes
  GraphicsCard:
   Intel Corporation Broadwell-U Integrated Graphics [8086:162b] (rev 09) 
(prog-if 00 [VGA controller])
     Subsystem: Apple Inc. Broadwell-U Integrated Graphics [106b:013f]
  InstallationDate: Installed on 2016-03-01 (97 days ago)
  InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
  MachineType: Apple Inc. MacBookPro12,1
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-22-generic.efi.signed 
root=UUID=18e90ec4-bbea-4061-aa6a-a7a46445929d ro quiet splash 
crashkernel=384M-:128M vt.handoff=7
  SourcePackage: xorg
  UpgradeStatus: Upgraded to xenial on 2016-04-06 (62 days ago)
  dmi.bios.date: 09/28/2015
  dmi.bios.vendor: Apple Inc.
  dmi.bios.version: MBP121.88Z.0167.B14.1509281135
  dmi.board.name: Mac-E43C1C25D4880AD6
  dmi.board.vendor: Apple Inc.
  dmi.board.version: MacBookPro12,1
  dmi.chassis.type: 9
  dmi.chassis.vendor: Apple Inc.
  dmi.chassis.version: Mac-E43C1C25D4880AD6
  dmi.modalias: 
dmi:bvnAppleInc.:bvrMBP121.88Z.0167.B14.1509281135:bd09/28/2015:svnAppleInc.:pnMacBookPro12,1:pvr1.0:rvnAppleInc.:rnMac-E43C1C25D4880AD6:rvrMacBookPro12,1:cvnAppleInc.:ct9:cvrMac-E43C1C25D4880AD6:
  dmi.product.name: MacBookPro12,1
  dmi.product.version: 1.0
  dmi.sys.vendor: Apple Inc.
  version.compiz: compiz 1:0.9.12.2+16.04.20160526-0ubuntu1
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.67-1ubuntu0.16.04.1
  version.libgl1-mesa-dri: libgl1-mesa-dri 11.2.0-1ubuntu2
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 11.2.0-1ubuntu2
  version.xserver-xorg-core: xserver-xorg-core 2:1.18.3-1ubuntu2.2
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.1-1ubuntu2
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.7.0-1
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 
2:2.99.917+git20160325-1ubuntu1
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 
1:1.0.12-1build2
  xserver.bootTime: Tue Jun  7 09:46:55 2016
  xserver.configfile: default
  xserver.errors:
   
  xserver.logfile: /var/log/Xorg.0.log
  xserver.outputs:
   product id                               41001 
   vendor                                     APP
  xserver.version: 2:1.18.3-1ubuntu2.2

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