Changed in linux (Ubuntu):
status:         New → Confirmed

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

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https://bugs.launchpad.net/bugs/1666365

Title:
  Desktop Effects were Restarting due to graphcal reset in Kubuntu 16:04

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  Desktop effects got hung intermittently while browsing videos in
  browser. This is happening after Kernel Update, tried reinstalling
  xserver-xorg-video-intel package as per
  https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1575301 but it did
  not help either, I am using Kubuntu 16.04

  dmesg output:

   1420.773494] [drm] GPU HANG: ecode 7:0:0x85dffffc, in kwin_x11 [2055], 
reason: Ring hung, action: reset
  [ 1420.773496] [drm] GPU hangs can indicate a bug anywhere in the entire gfx 
stack, including userspace.
  [ 1420.773497] [drm] Please file a _new_ bug report on bugs.freedesktop.org 
against DRI -> DRM/Intel
  [ 1420.773497] [drm] drm/i915 developers can then reassign to the right 
component if it's not a kernel issue.
  [ 1420.773498] [drm] The gpu crash dump is required to analyze gpu hangs, so 
please always attach it.
  [ 1420.773499] [drm] GPU crash dump saved to /sys/class/drm/card0/error
  [ 1420.775585] drm/i915: Resetting chip after gpu hang
  [ 1522.762995] [drm] stuck on render ring
  [ 1522.764133] [drm] GPU HANG: ecode 7:0:0x85dffffc, in kwin_x11 [2055], 
reason: Ring hung, action: reset
  [ 1522.764305] ------------[ cut here ]------------
  [ 1522.764366] WARNING: CPU: 1 PID: 3092 at 
/build/linux-W6HB68/linux-4.4.0/drivers/gpu/drm/i915/intel_display.c:11311 
intel_mmio_flip_work_func+0x38e/0x3d0 [i915]()
  [ 1522.764369] WARN_ON(__i915_wait_request(mmio_flip->req, 
mmio_flip->crtc->reset_counter, false, NULL, &mmio_flip->i915->rps.mmioflips))
  [ 1522.764371] Modules linked in:
  [ 1522.764374]  ipt_MASQUERADE nf_nat_masquerade_ipv4 
vmw_vsock_vmci_transport vsock vmw_vmci iptable_nat nf_conntrack_ipv4 
nf_defrag_ipv4 nf_nat_ipv4 xt_addrtype iptable_filter ip_tables xt_conntrack 
x_tables nf_nat nf_conntrack br_netfilter bridge stp llc aufs eeepc_wmi 
asus_wmi sparse_keymap snd_hda_codec_realtek snd_hda_codec_generic uvcvideo 
videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_core v4l2_common 
videodev snd_hda_intel snd_hda_codec intel_rapl x86_pkg_temp_thermal 
intel_powerclamp coretemp snd_hda_core snd_hwdep snd_pcm media snd_seq_midi 
snd_seq_midi_event snd_rawmidi kvm irqbypass crct10dif_pclmul crc32_pclmul 
ghash_clmulni_intel snd_seq snd_seq_device snd_timer input_leds snd cryptd 
serio_raw soundcore shpchp tpm_infineon mei_me mei mac_hid 8250_fintek lpc_ich 
binfmt_misc
  [ 1522.764437]  nfsd auth_rpcgss nfs_acl lockd grace sunrpc parport_pc ppdev 
lp parport autofs4 hid_generic usbhid hid i915 i2c_algo_bit drm_kms_helper ahci 
libahci r8169 mii syscopyarea sysfillrect sysimgblt fb_sys_fops drm video fjes 
wmi
  [ 1522.764468] CPU: 1 PID: 3092 Comm: kworker/1:1 Not tainted 
4.4.0-62-generic #83-Ubuntu
  [ 1522.764471] Hardware name: ASUS All Series/H81M-CS, BIOS 0401 03/09/2015
  [ 1522.764515] Workqueue: events intel_mmio_flip_work_func [i915]
  [ 1522.764518]  0000000000000286 000000008e417408 ffff880119f67d20 
ffffffff813f7c63
  [ 1522.764523]  ffff880119f67d68 ffffffffc0203ab8 ffff880119f67d58 
ffffffff810812d2
  [ 1522.764528]  ffff880048c039c0 ffff88011fb165c0 ffff88011fb1af00 
0000000000000040
  [ 1522.764532] Call Trace:
  [ 1522.764540]  [<ffffffff813f7c63>] dump_stack+0x63/0x90
  [ 1522.764547]  [<ffffffff810812d2>] warn_slowpath_common+0x82/0xc0
  [ 1522.764551]  [<ffffffff8108136c>] warn_slowpath_fmt+0x5c/0x80
  [ 1522.764558]  [<ffffffff8102d8c7>] ? __switch_to+0x437/0x5c0
  [ 1522.764597]  [<ffffffffc019cf3e>] intel_mmio_flip_work_func+0x38e/0x3d0 
[i915]
  [ 1522.764603]  [<ffffffff8109a515>] process_one_work+0x165/0x480
  [ 1522.764608]  [<ffffffff8109a87b>] worker_thread+0x4b/0x4c0
  [ 1522.764613]  [<ffffffff8109a830>] ? process_one_work+0x480/0x480
  [ 1522.764617]  [<ffffffff8109a830>] ? process_one_work+0x480/0x480
  [ 1522.764621]  [<ffffffff810a0ba8>] kthread+0xd8/0xf0
  [ 1522.764625]  [<ffffffff810a0ad0>] ? kthread_create_on_node+0x1e0/0x1e0
  [ 1522.764632]  [<ffffffff8183898f>] ret_from_fork+0x3f/0x70
  [ 1522.764636]  [<ffffffff810a0ad0>] ? kthread_create_on_node+0x1e0/0x1e0
  [ 1522.764640] ---[ end trace b709120738fd081c ]---
  [ 1522.766309] drm/i915: Resetting chip after gpu hang

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