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      <base href="https://bugs.freedesktop.org/" />
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    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - GPU HANG: ecode 3:0:0x7f7fffc1, in Xorg [778], reason: Ring hung, action: reset"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=93432">93432</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>GPU HANG: ecode 3:0:0x7f7fffc1, in Xorg [778], reason: Ring hung, action: reset
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>DRI
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>unspecified
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>x86 (IA32)
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>Linux (All)
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>critical
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>medium
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>DRM/Intel
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>intel-gfx-bugs@lists.freedesktop.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>alessandro.cazzorla@gmail.com
          </td>
        </tr>

        <tr>
          <th>QA Contact</th>
          <td>intel-gfx-bugs@lists.freedesktop.org
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>intel-gfx-bugs@lists.freedesktop.org
          </td>
        </tr></table>
      <p>
        <div>
        <pre>[ 1244.000195] [drm] stuck on render ring
[ 1244.005991] [drm] GPU HANG: ecode 3:0:0x7f7fffc1, in Xorg [778], reason:
Ring hung, action: reset
[ 1244.005999] [drm] GPU hangs can indicate a bug anywhere in the entire gfx
stack, including userspace.
[ 1244.006003] [drm] Please file a _new_ bug report on bugs.freedesktop.org
against DRI -> DRM/Intel
[ 1244.006007] [drm] drm/i915 developers can then reassign to the right
component if it's not a kernel issue.
[ 1244.006010] [drm] The gpu crash dump is required to analyze gpu hangs, so
please always attach it.


[ 1244.007686] ------------[ cut here ]------------
[ 1244.007785] WARNING: CPU: 1 PID: 2845 at
/build/linux-yZBlQv/linux-4.2.0/drivers/gpu/drm/i915/intel_display.c:3296
intel_crtc_wait_for_pending_flips+0x17c/0x220 [i915]()
[ 1244.007792] WARN_ON(ret)
[ 1244.007796] Modules linked in:
[ 1244.007802]  drbg ansi_cprng ctr ccm arc4 snd_hda_codec_realtek
snd_hda_codec_generic snd_hda_intel snd_hda_codec uvcvideo snd_hda_core
eeepc_wmi snd_hwdep asus_wmi videobuf2_vmalloc videobuf2_memops videobuf2_core
ath9k snd_pcm v4l2_common ath9k_common videodev ath9k_hw snd_seq_midi
snd_seq_midi_event media coretemp input_leds snd_rawmidi ath mac80211 snd_seq
serio_raw lpc_ich cfg80211 snd_seq_device snd_timer snd shpchp soundcore
sparse_keymap joydev mac_hid parport_pc ppdev lp parport sunrpc autofs4 i915
psmouse i2c_algo_bit drm_kms_helper drm pata_acpi atl1e wmi video
[ 1244.007924] CPU: 1 PID: 2845 Comm: kworker/u4:1 Not tainted 4.2.0-19-generic
#23-Ubuntu
[ 1244.007931] Hardware name: ASUSTeK Computer INC. 1000HE/1000HE, BIOS 1104   
10/14/2009
[ 1244.008004] Workqueue: i915-hangcheck i915_hangcheck_elapsed [i915]
[ 1244.008097]  c1a649a7 78e526cb 00000000 f3595d48 c175e501 f3595d88 f3595d78
c106a847
[ 1244.008113]  f8ad298d f3595da8 00000b1d f8ac4ab0 00000ce0 f8a6706c f8a6706c
f59e8000
[ 1244.008128]  f5804834 00000001 f3595d94 c106a8be 00000009 f3595d88 f8ad298d
f3595da8
[ 1244.008143] Call Trace:
[ 1244.008161]  [<c175e501>] dump_stack+0x41/0x52
[ 1244.008173]  [<c106a847>] warn_slowpath_common+0x87/0xc0
[ 1244.008254]  [<f8a6706c>] ? intel_crtc_wait_for_pending_flips+0x17c/0x220
[i915]
[ 1244.008327]  [<f8a6706c>] ? intel_crtc_wait_for_pending_flips+0x17c/0x220
[i915]
[ 1244.008339]  [<c106a8be>] warn_slowpath_fmt+0x3e/0x60
[ 1244.008412]  [<f8a6706c>] intel_crtc_wait_for_pending_flips+0x17c/0x220
[i915]
[ 1244.008465]  [<f885ffe4>] ? drm_modeset_lock_all_crtcs+0x84/0x90 [drm]
[ 1244.008543]  [<f8a68434>] intel_crtc_disable_planes+0x34/0xf0 [i915]
[ 1244.008617]  [<f8a6859a>] intel_prepare_reset+0x6a/0x80 [i915]
[ 1244.008685]  [<f8a3a7b7>] i915_handle_error+0x147/0x6e0 [i915]
[ 1244.008699]  [<c10be3ad>] ? log_store+0x1cd/0x210
[ 1244.008713]  [<c10bfc81>] ? vprintk_default+0x41/0x60
[ 1244.008783]  [<f8a3afd3>] i915_hangcheck_elapsed+0x233/0x410 [i915]
[ 1244.008798]  [<c1081275>] process_one_work+0x155/0x3e0
[ 1244.008809]  [<c1081537>] worker_thread+0x37/0x490
[ 1244.008819]  [<c1081500>] ? process_one_work+0x3e0/0x3e0
[ 1244.008829]  [<c1086c16>] kthread+0xa6/0xc0
[ 1244.008842]  [<c1764141>] ret_from_kernel_thread+0x21/0x30
[ 1244.008853]  [<c1086b70>] ? kthread_create_on_node+0x170/0x170
[ 1244.008862] ---[ end trace 2f536c4d0344fa45 ]---
[ 1244.298577] drm/i915: Resetting chip after gpu hang
[ 2845.988246] [drm] stuck on render ring
[ 2845.993995] [drm] GPU HANG: ecode 3:0:0x027fffc2, in Xorg [778], reason:
Ring hung, action: reset
[ 2845.994205] ------------[ cut here ]------------</pre>
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