kernel-packages team mailing list archive

Thread
Date
[Bug 1572869] [NEW] pipe is still busy with an old pageflip

To: kernel-packages@xxxxxxxxxxxxxxxxxxx
From: Lars Noodén <lars.nooden@xxxxxxxxx>
Date: Thu, 21 Apr 2016 07:40:06 -0000
Reply-to: Bug 1572869 <1572869@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
Public bug reported:

My system locks up several times a week.  There is nothing that I know
of that can trigger it, it happens whether I use one monitor or two.
The symptom is that the applications windows become unresponsive, then
eventually also the mouse pointer, then eventually even the consoles.
As far as I can tell it is associated with the log messages below from
/var/log/kern.log

Pressing the power button as per normal will initiate a shutdown but
without any log entries.  Sometimes it can go a week with no problems
other times, it can fail twice in one day.

$ uname -a
Linux gazp9 3.16.0-70-generic #90~14.04.1-Ubuntu SMP Wed Apr 6 22:56:34 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux

$ lsb_release -rd
Description:    Ubuntu 14.04.4 LTS
Release:        14.04


Apr 20 22:36:59 gazp9 kernel: [19642.008582] ------------[ cut here ]------------
Apr 20 22:36:59 gazp9 kernel: [19642.008657] WARNING: CPU: 0 PID: 1810 at /build/linux-lts-utopic-vy2yyy/linux-lts-utopic-3.16.0/drivers/gpu/drm/i915/intel_display.c:3324 intel_crtc_wait_for_pending_flips+0x171/0x180 [i915]()
Apr 20 22:36:59 gazp9 kernel: [19642.008695] Modules linked in: nls_iso8859_1 mmc_block hidp ec_sys cuse rfcomm bnep dm_crypt arc4 ip6t_REJECT xt_hl ip6t_rt nf_conntrack_ipv6 nf_defrag_ipv6 intel_rapl ipt_REJECT x86_pkg_temp_thermal xt_LOG intel_powerclamp coretemp xt_recent kvm_intel kvm xt_limit xt_tcpudp crct10dif_pclmul xt_addrtype crc32_pclmul nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack snd_hda_codec_via snd_hda_codec_generic aesni_intel snd_hda_codec_hdmi aes_x86_64 lrw gf128mul ip6table_filter glue_helper ablk_helper snd_hda_intel cryptd snd_hda_controller ip6_tables snd_hda_codec nf_conntrack_netbios_ns nf_conntrack_broadcast nf_nat_ftp nf_nat nf_conntrack_ftp joydev nf_conntrack snd_usb_audio serio_raw snd_seq_midi iptable_filter snd_usbmidi_lib snd_seq_midi_event snd_hwdep iwlmvm snd_rawmidi ip_tables mac80211 x_tables snd_pcm snd_seq pl2303 usbserial snd_seq_device rtsx_pci_ms iwlwifi snd_timer memstick cfg80211 btusb parport_pc bluetooth ppdev 6lowpan_iphc snd lp mei_me parport mei lpc_ich tpm_infineon mac_hid shpchp soundcore raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq multipath linear hid_generic usbhid hid raid0 raid1 rtsx_pci_sdmmc i915 psmouse r8169 ahci libahci rtsx_pci mii i2c_algo_bit drm_kms_helper drm wmi video
Apr 20 22:36:59 gazp9 kernel: [19642.008728] CPU: 0 PID: 1810 Comm: Xorg Not tainted 3.16.0-70-generic #90~14.04.1-Ubuntu
Apr 20 22:36:59 gazp9 kernel: [19642.008729] Hardware name: System76, Inc.                   Gazelle Professional            /Gazelle Professional           , BIOS 1.03.03RS76 01/15/2014
Apr 20 22:36:59 gazp9 kernel: [19642.008733]  0000000000000000 ffff8800d093f9a8 ffffffff81769e17 0000000000000000
Apr 20 22:36:59 gazp9 kernel: [19642.008736]  0000000000000009 ffff8800d093f9e0 ffffffff8106ef1d 0000000000000000
Apr 20 22:36:59 gazp9 kernel: [19642.008738]  ffff880213fe7000 ffff880210628238 ffff880036357000 ffff880036357368
Apr 20 22:36:59 gazp9 kernel: [19642.008739] Call Trace:
Apr 20 22:36:59 gazp9 kernel: [19642.008749]  [<ffffffff81769e17>] dump_stack+0x64/0x82
Apr 20 22:36:59 gazp9 kernel: [19642.008756]  [<ffffffff8106ef1d>] warn_slowpath_common+0x7d/0xa0
Apr 20 22:36:59 gazp9 kernel: [19642.008760]  [<ffffffff8106effa>] warn_slowpath_null+0x1a/0x20
Apr 20 22:36:59 gazp9 kernel: [19642.008795]  [<ffffffffc04689f1>] intel_crtc_wait_for_pending_flips+0x171/0x180 [i915]
Apr 20 22:36:59 gazp9 kernel: [19642.008802]  [<ffffffff810b6460>] ? prepare_to_wait_event+0x100/0x100
Apr 20 22:36:59 gazp9 kernel: [19642.008838]  [<ffffffffc0472229>] intel_crtc_set_config+0x959/0xdb0 [i915]
Apr 20 22:36:59 gazp9 kernel: [19642.008870]  [<ffffffffc02e44c1>] drm_mode_set_config_internal+0x61/0xe0 [drm]
Apr 20 22:36:59 gazp9 kernel: [19642.008884]  [<ffffffffc0342b33>] restore_fbdev_mode+0xb3/0xe0 [drm_kms_helper]
Apr 20 22:36:59 gazp9 kernel: [19642.008897]  [<ffffffffc0344775>] drm_fb_helper_restore_fbdev_mode_unlocked+0x25/0x70 [drm_kms_helper]
Apr 20 22:36:59 gazp9 kernel: [19642.008908]  [<ffffffffc03447e2>] drm_fb_helper_set_par+0x22/0x50 [drm_kms_helper]
Apr 20 22:36:59 gazp9 kernel: [19642.008912]  [<ffffffff814049b1>] fb_set_var+0x191/0x430
Apr 20 22:36:59 gazp9 kernel: [19642.008918]  [<ffffffff813fb9f1>] fbcon_blank+0x1d1/0x2d0
Apr 20 22:36:59 gazp9 kernel: [19642.008922]  [<ffffffff814871b8>] do_unblank_screen+0xb8/0x1f0
Apr 20 22:36:59 gazp9 kernel: [19642.008926]  [<ffffffff8147d13a>] complete_change_console+0x5a/0xe0
Apr 20 22:36:59 gazp9 kernel: [19642.008928]  [<ffffffff8147e15c>] vt_ioctl+0xf9c/0x11b0
Apr 20 22:36:59 gazp9 kernel: [19642.008936]  [<ffffffff814718cd>] tty_ioctl+0x26d/0xbc0
Apr 20 22:36:59 gazp9 kernel: [19642.008941]  [<ffffffff812137c8>] ? fsnotify+0x228/0x2f0
Apr 20 22:36:59 gazp9 kernel: [19642.008945]  [<ffffffff811e8d80>] do_vfs_ioctl+0x2e0/0x4c0
Apr 20 22:36:59 gazp9 kernel: [19642.008949]  [<ffffffff811d82b1>] ? __sb_end_write+0x31/0x60
Apr 20 22:36:59 gazp9 kernel: [19642.008952]  [<ffffffff811e8fe1>] SyS_ioctl+0x81/0xa0
Apr 20 22:36:59 gazp9 kernel: [19642.008957]  [<ffffffff8177258d>] system_call_fastpath+0x1a/0x1f
Apr 20 22:36:59 gazp9 kernel: [19642.008959] ---[ end trace 77f6d66e45d93b9f ]---
Apr 20 22:36:59 gazp9 kernel: [19642.008964] [drm:intel_pipe_set_base] *ERROR* pipe is still busy with an old pageflip
Apr 20 22:40:49 gazp9 kernel: [19872.483621] usb 3-3.4: current rate 0 is different from the runtime rate 44100
Apr 20 22:40:49 gazp9 kernel: [19872.484077] usb 3-3.4: current rate 0 is different from the runtime rate 44100
Apr 20 22:43:34 gazp9 kernel: [    0.000000] Initializing cgroup subsys cpuset

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.16.0-70-generic 3.16.0-70.90~14.04.1
ProcVersionSignature: Ubuntu 3.16.0-70.90~14.04.1-generic 3.16.7-ckt25
Uname: Linux 3.16.0-70-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.19
Architecture: amd64
CurrentDesktop: Unity
Date: Thu Apr 21 10:31:14 2016
InstallationDate: Installed on 2015-03-27 (390 days ago)
InstallationMedia: Ubuntu-Server 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1)
SourcePackage: linux-lts-utopic
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: linux-lts-utopic (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug trusty

** Description changed:

  My system locks up several times a week.  There is nothing that I know
  of that can trigger it, it happens whether I use one monitor or two.
  The symptom is that the applications windows become unresponsive, then
  eventually also the mouse pointer, then eventually even the consoles.
  As far as I can tell it is associated with the log messages below from
  /var/log/kern.log
  
  Pressing the power button as per normal will initiate a shutdown but
  without any log entries.  Sometimes it can go a week with no problems
  other times, it can fail twice in one day.
+ 
+ $ uname -a
+ Linux gazp9 3.16.0-70-generic #90~14.04.1-Ubuntu SMP Wed Apr 6 22:56:34 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
+ 
+ $ lsb_release -rd
+ Description:    Ubuntu 14.04.4 LTS
+ Release:        14.04
+ 
  
  Apr 20 22:36:59 gazp9 kernel: [19642.008582] ------------[ cut here ]------------
  Apr 20 22:36:59 gazp9 kernel: [19642.008657] WARNING: CPU: 0 PID: 1810 at /build/linux-lts-utopic-vy2yyy/linux-lts-utopic-3.16.0/drivers/gpu/drm/i915/intel_display.c:3324 intel_crtc_wait_for_pending_flips+0x171/0x180 [i915]()
  Apr 20 22:36:59 gazp9 kernel: [19642.008695] Modules linked in: nls_iso8859_1 mmc_block hidp ec_sys cuse rfcomm bnep dm_crypt arc4 ip6t_REJECT xt_hl ip6t_rt nf_conntrack_ipv6 nf_defrag_ipv6 intel_rapl ipt_REJECT x86_pkg_temp_thermal xt_LOG intel_powerclamp coretemp xt_recent kvm_intel kvm xt_limit xt_tcpudp crct10dif_pclmul xt_addrtype crc32_pclmul nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack snd_hda_codec_via snd_hda_codec_generic aesni_intel snd_hda_codec_hdmi aes_x86_64 lrw gf128mul ip6table_filter glue_helper ablk_helper snd_hda_intel cryptd snd_hda_controller ip6_tables snd_hda_codec nf_conntrack_netbios_ns nf_conntrack_broadcast nf_nat_ftp nf_nat nf_conntrack_ftp joydev nf_conntrack snd_usb_audio serio_raw snd_seq_midi iptable_filter snd_usbmidi_lib snd_seq_midi_event snd_hwdep iwlmvm snd_rawmidi ip_tables mac80211 x_tables snd_pcm snd_seq pl2303 usbserial snd_seq_device rtsx_pci_ms iwlwifi snd_timer memstick cfg80211 btusb parport_pc bluetooth ppdev 6lowpan_iphc snd lp mei_me parport mei lpc_ich tpm_infineon mac_hid shpchp soundcore raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq multipath linear hid_generic usbhid hid raid0 raid1 rtsx_pci_sdmmc i915 psmouse r8169 ahci libahci rtsx_pci mii i2c_algo_bit drm_kms_helper drm wmi video
  Apr 20 22:36:59 gazp9 kernel: [19642.008728] CPU: 0 PID: 1810 Comm: Xorg Not tainted 3.16.0-70-generic #90~14.04.1-Ubuntu
  Apr 20 22:36:59 gazp9 kernel: [19642.008729] Hardware name: System76, Inc.                   Gazelle Professional            /Gazelle Professional           , BIOS 1.03.03RS76 01/15/2014
  Apr 20 22:36:59 gazp9 kernel: [19642.008733]  0000000000000000 ffff8800d093f9a8 ffffffff81769e17 0000000000000000
  Apr 20 22:36:59 gazp9 kernel: [19642.008736]  0000000000000009 ffff8800d093f9e0 ffffffff8106ef1d 0000000000000000
  Apr 20 22:36:59 gazp9 kernel: [19642.008738]  ffff880213fe7000 ffff880210628238 ffff880036357000 ffff880036357368
  Apr 20 22:36:59 gazp9 kernel: [19642.008739] Call Trace:
  Apr 20 22:36:59 gazp9 kernel: [19642.008749]  [<ffffffff81769e17>] dump_stack+0x64/0x82
  Apr 20 22:36:59 gazp9 kernel: [19642.008756]  [<ffffffff8106ef1d>] warn_slowpath_common+0x7d/0xa0
  Apr 20 22:36:59 gazp9 kernel: [19642.008760]  [<ffffffff8106effa>] warn_slowpath_null+0x1a/0x20
  Apr 20 22:36:59 gazp9 kernel: [19642.008795]  [<ffffffffc04689f1>] intel_crtc_wait_for_pending_flips+0x171/0x180 [i915]
  Apr 20 22:36:59 gazp9 kernel: [19642.008802]  [<ffffffff810b6460>] ? prepare_to_wait_event+0x100/0x100
  Apr 20 22:36:59 gazp9 kernel: [19642.008838]  [<ffffffffc0472229>] intel_crtc_set_config+0x959/0xdb0 [i915]
  Apr 20 22:36:59 gazp9 kernel: [19642.008870]  [<ffffffffc02e44c1>] drm_mode_set_config_internal+0x61/0xe0 [drm]
  Apr 20 22:36:59 gazp9 kernel: [19642.008884]  [<ffffffffc0342b33>] restore_fbdev_mode+0xb3/0xe0 [drm_kms_helper]
  Apr 20 22:36:59 gazp9 kernel: [19642.008897]  [<ffffffffc0344775>] drm_fb_helper_restore_fbdev_mode_unlocked+0x25/0x70 [drm_kms_helper]
  Apr 20 22:36:59 gazp9 kernel: [19642.008908]  [<ffffffffc03447e2>] drm_fb_helper_set_par+0x22/0x50 [drm_kms_helper]
  Apr 20 22:36:59 gazp9 kernel: [19642.008912]  [<ffffffff814049b1>] fb_set_var+0x191/0x430
  Apr 20 22:36:59 gazp9 kernel: [19642.008918]  [<ffffffff813fb9f1>] fbcon_blank+0x1d1/0x2d0
  Apr 20 22:36:59 gazp9 kernel: [19642.008922]  [<ffffffff814871b8>] do_unblank_screen+0xb8/0x1f0
  Apr 20 22:36:59 gazp9 kernel: [19642.008926]  [<ffffffff8147d13a>] complete_change_console+0x5a/0xe0
  Apr 20 22:36:59 gazp9 kernel: [19642.008928]  [<ffffffff8147e15c>] vt_ioctl+0xf9c/0x11b0
  Apr 20 22:36:59 gazp9 kernel: [19642.008936]  [<ffffffff814718cd>] tty_ioctl+0x26d/0xbc0
  Apr 20 22:36:59 gazp9 kernel: [19642.008941]  [<ffffffff812137c8>] ? fsnotify+0x228/0x2f0
  Apr 20 22:36:59 gazp9 kernel: [19642.008945]  [<ffffffff811e8d80>] do_vfs_ioctl+0x2e0/0x4c0
  Apr 20 22:36:59 gazp9 kernel: [19642.008949]  [<ffffffff811d82b1>] ? __sb_end_write+0x31/0x60
  Apr 20 22:36:59 gazp9 kernel: [19642.008952]  [<ffffffff811e8fe1>] SyS_ioctl+0x81/0xa0
  Apr 20 22:36:59 gazp9 kernel: [19642.008957]  [<ffffffff8177258d>] system_call_fastpath+0x1a/0x1f
  Apr 20 22:36:59 gazp9 kernel: [19642.008959] ---[ end trace 77f6d66e45d93b9f ]---
  Apr 20 22:36:59 gazp9 kernel: [19642.008964] [drm:intel_pipe_set_base] *ERROR* pipe is still busy with an old pageflip
  Apr 20 22:40:49 gazp9 kernel: [19872.483621] usb 3-3.4: current rate 0 is different from the runtime rate 44100
  Apr 20 22:40:49 gazp9 kernel: [19872.484077] usb 3-3.4: current rate 0 is different from the runtime rate 44100
  Apr 20 22:43:34 gazp9 kernel: [    0.000000] Initializing cgroup subsys cpuset
  
  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.16.0-70-generic 3.16.0-70.90~14.04.1
  ProcVersionSignature: Ubuntu 3.16.0-70.90~14.04.1-generic 3.16.7-ckt25
  Uname: Linux 3.16.0-70-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.19
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Thu Apr 21 10:31:14 2016
  InstallationDate: Installed on 2015-03-27 (390 days ago)
  InstallationMedia: Ubuntu-Server 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1)
  SourcePackage: linux-lts-utopic
  UpgradeStatus: No upgrade log present (probably fresh install)

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux-lts-utopic in Ubuntu.
https://bugs.launchpad.net/bugs/1572869

Title:
  pipe is still busy with an old pageflip

Status in linux-lts-utopic package in Ubuntu:
  New

Bug description:
  My system locks up several times a week.  There is nothing that I know
  of that can trigger it, it happens whether I use one monitor or two.
  The symptom is that the applications windows become unresponsive, then
  eventually also the mouse pointer, then eventually even the consoles.
  As far as I can tell it is associated with the log messages below from
  /var/log/kern.log

  Pressing the power button as per normal will initiate a shutdown but
  without any log entries.  Sometimes it can go a week with no problems
  other times, it can fail twice in one day.

  $ uname -a
  Linux gazp9 3.16.0-70-generic #90~14.04.1-Ubuntu SMP Wed Apr 6 22:56:34 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux

  $ lsb_release -rd
  Description:    Ubuntu 14.04.4 LTS
  Release:        14.04


  Apr 20 22:36:59 gazp9 kernel: [19642.008582] ------------[ cut here ]------------
  Apr 20 22:36:59 gazp9 kernel: [19642.008657] WARNING: CPU: 0 PID: 1810 at /build/linux-lts-utopic-vy2yyy/linux-lts-utopic-3.16.0/drivers/gpu/drm/i915/intel_display.c:3324 intel_crtc_wait_for_pending_flips+0x171/0x180 [i915]()
  Apr 20 22:36:59 gazp9 kernel: [19642.008695] Modules linked in: nls_iso8859_1 mmc_block hidp ec_sys cuse rfcomm bnep dm_crypt arc4 ip6t_REJECT xt_hl ip6t_rt nf_conntrack_ipv6 nf_defrag_ipv6 intel_rapl ipt_REJECT x86_pkg_temp_thermal xt_LOG intel_powerclamp coretemp xt_recent kvm_intel kvm xt_limit xt_tcpudp crct10dif_pclmul xt_addrtype crc32_pclmul nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack snd_hda_codec_via snd_hda_codec_generic aesni_intel snd_hda_codec_hdmi aes_x86_64 lrw gf128mul ip6table_filter glue_helper ablk_helper snd_hda_intel cryptd snd_hda_controller ip6_tables snd_hda_codec nf_conntrack_netbios_ns nf_conntrack_broadcast nf_nat_ftp nf_nat nf_conntrack_ftp joydev nf_conntrack snd_usb_audio serio_raw snd_seq_midi iptable_filter snd_usbmidi_lib snd_seq_midi_event snd_hwdep iwlmvm snd_rawmidi ip_tables mac80211 x_tables snd_pcm snd_seq pl2303 usbserial snd_seq_device rtsx_pci_ms iwlwifi snd_timer memstick cfg80211 btusb parport_pc bluetooth ppdev 6lowpan_iphc snd lp mei_me parport mei lpc_ich tpm_infineon mac_hid shpchp soundcore raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq multipath linear hid_generic usbhid hid raid0 raid1 rtsx_pci_sdmmc i915 psmouse r8169 ahci libahci rtsx_pci mii i2c_algo_bit drm_kms_helper drm wmi video
  Apr 20 22:36:59 gazp9 kernel: [19642.008728] CPU: 0 PID: 1810 Comm: Xorg Not tainted 3.16.0-70-generic #90~14.04.1-Ubuntu
  Apr 20 22:36:59 gazp9 kernel: [19642.008729] Hardware name: System76, Inc.                   Gazelle Professional            /Gazelle Professional           , BIOS 1.03.03RS76 01/15/2014
  Apr 20 22:36:59 gazp9 kernel: [19642.008733]  0000000000000000 ffff8800d093f9a8 ffffffff81769e17 0000000000000000
  Apr 20 22:36:59 gazp9 kernel: [19642.008736]  0000000000000009 ffff8800d093f9e0 ffffffff8106ef1d 0000000000000000
  Apr 20 22:36:59 gazp9 kernel: [19642.008738]  ffff880213fe7000 ffff880210628238 ffff880036357000 ffff880036357368
  Apr 20 22:36:59 gazp9 kernel: [19642.008739] Call Trace:
  Apr 20 22:36:59 gazp9 kernel: [19642.008749]  [<ffffffff81769e17>] dump_stack+0x64/0x82
  Apr 20 22:36:59 gazp9 kernel: [19642.008756]  [<ffffffff8106ef1d>] warn_slowpath_common+0x7d/0xa0
  Apr 20 22:36:59 gazp9 kernel: [19642.008760]  [<ffffffff8106effa>] warn_slowpath_null+0x1a/0x20
  Apr 20 22:36:59 gazp9 kernel: [19642.008795]  [<ffffffffc04689f1>] intel_crtc_wait_for_pending_flips+0x171/0x180 [i915]
  Apr 20 22:36:59 gazp9 kernel: [19642.008802]  [<ffffffff810b6460>] ? prepare_to_wait_event+0x100/0x100
  Apr 20 22:36:59 gazp9 kernel: [19642.008838]  [<ffffffffc0472229>] intel_crtc_set_config+0x959/0xdb0 [i915]
  Apr 20 22:36:59 gazp9 kernel: [19642.008870]  [<ffffffffc02e44c1>] drm_mode_set_config_internal+0x61/0xe0 [drm]
  Apr 20 22:36:59 gazp9 kernel: [19642.008884]  [<ffffffffc0342b33>] restore_fbdev_mode+0xb3/0xe0 [drm_kms_helper]
  Apr 20 22:36:59 gazp9 kernel: [19642.008897]  [<ffffffffc0344775>] drm_fb_helper_restore_fbdev_mode_unlocked+0x25/0x70 [drm_kms_helper]
  Apr 20 22:36:59 gazp9 kernel: [19642.008908]  [<ffffffffc03447e2>] drm_fb_helper_set_par+0x22/0x50 [drm_kms_helper]
  Apr 20 22:36:59 gazp9 kernel: [19642.008912]  [<ffffffff814049b1>] fb_set_var+0x191/0x430
  Apr 20 22:36:59 gazp9 kernel: [19642.008918]  [<ffffffff813fb9f1>] fbcon_blank+0x1d1/0x2d0
  Apr 20 22:36:59 gazp9 kernel: [19642.008922]  [<ffffffff814871b8>] do_unblank_screen+0xb8/0x1f0
  Apr 20 22:36:59 gazp9 kernel: [19642.008926]  [<ffffffff8147d13a>] complete_change_console+0x5a/0xe0
  Apr 20 22:36:59 gazp9 kernel: [19642.008928]  [<ffffffff8147e15c>] vt_ioctl+0xf9c/0x11b0
  Apr 20 22:36:59 gazp9 kernel: [19642.008936]  [<ffffffff814718cd>] tty_ioctl+0x26d/0xbc0
  Apr 20 22:36:59 gazp9 kernel: [19642.008941]  [<ffffffff812137c8>] ? fsnotify+0x228/0x2f0
  Apr 20 22:36:59 gazp9 kernel: [19642.008945]  [<ffffffff811e8d80>] do_vfs_ioctl+0x2e0/0x4c0
  Apr 20 22:36:59 gazp9 kernel: [19642.008949]  [<ffffffff811d82b1>] ? __sb_end_write+0x31/0x60
  Apr 20 22:36:59 gazp9 kernel: [19642.008952]  [<ffffffff811e8fe1>] SyS_ioctl+0x81/0xa0
  Apr 20 22:36:59 gazp9 kernel: [19642.008957]  [<ffffffff8177258d>] system_call_fastpath+0x1a/0x1f
  Apr 20 22:36:59 gazp9 kernel: [19642.008959] ---[ end trace 77f6d66e45d93b9f ]---
  Apr 20 22:36:59 gazp9 kernel: [19642.008964] [drm:intel_pipe_set_base] *ERROR* pipe is still busy with an old pageflip
  Apr 20 22:40:49 gazp9 kernel: [19872.483621] usb 3-3.4: current rate 0 is different from the runtime rate 44100
  Apr 20 22:40:49 gazp9 kernel: [19872.484077] usb 3-3.4: current rate 0 is different from the runtime rate 44100
  Apr 20 22:43:34 gazp9 kernel: [    0.000000] Initializing cgroup subsys cpuset

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.16.0-70-generic 3.16.0-70.90~14.04.1
  ProcVersionSignature: Ubuntu 3.16.0-70.90~14.04.1-generic 3.16.7-ckt25
  Uname: Linux 3.16.0-70-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.19
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Thu Apr 21 10:31:14 2016
  InstallationDate: Installed on 2015-03-27 (390 days ago)
  InstallationMedia: Ubuntu-Server 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1)
  SourcePackage: linux-lts-utopic
  UpgradeStatus: No upgrade log present (probably fresh install)

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux-lts-utopic/+bug/1572869/+subscriptions