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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 - [drm] GPU HANG: ecode 9:0:0x85dffffb, in compiz [1755], reason: Ring hung, action: reset"
href="https://bugs.freedesktop.org/show_bug.cgi?id=94927">94927</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>[drm] GPU HANG: ecode 9:0:0x85dffffb, in compiz [1755], reason: Ring hung, action: reset
</td>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr>
<tr>
<th>Version</th>
<td>XOrg git
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Other
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux (All)
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</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>john.stultz@linaro.org
</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>Possible duplicate of #94464, but filing just in case.
After logging into my Ubuntu 15.10 system, I get some blocky grpahics glitches,
then a long stall (where the following message is printed to dmesg), then it
will sometimes recover for a few seconds then another stall, with more
messages, over and over. Eventually the system will crash hard and I've not
been able to capture that log.
Warning in dmesg:
[ 18.898605] [drm] stuck on render ring
[ 18.899840] [drm] GPU HANG: ecode 9:0:0x85dffffb, in compiz [1755], reason:
Ring hung, action: reset
[ 18.899847] [drm] GPU hangs can indicate a bug anywhere in the entire gfx
stack, including userspace.
[ 18.899851] [drm] Please file a _new_ bug report on bugs.freedesktop.org
against DRI -> DRM/Intel
[ 18.899855] [drm] drm/i915 developers can then reassign to the right
component if it's not a kernel issue.
[ 18.899858] [drm] The gpu crash dump is required to analyze gpu hangs, so
please always attach it.
[ 18.899862] [drm] GPU crash dump saved to /sys/class/drm/card0/error
[ 18.900022] ------------[ cut here ]------------
[ 18.900117] WARNING: CPU: 1 PID: 928 at
/build/linux-HVWSXI/linux-4.2.0/drivers/gpu/drm/drm_crtc.c:5357
drm_mode_page_flip_ioctl+0x25a/0x340 [drm]()
[ 18.900126] Modules linked in: rfcomm xt_CHECKSUM iptable_mangle
ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_nat_ipv4 bridge stp llc
ebtable_filter ebtables snd_hda_codec_hdmi bnep arc4 input_leds joydev
snd_hda_codec_realtek snd_hda_codec_generic hid_generic 8250_dw snd_hda_intel
iwlmvm mac80211 snd_hda_codec intel_rapl snd_hda_core x86_pkg_temp_thermal
intel_powerclamp uvcvideo coretemp videobuf2_vmalloc videobuf2_memops
snd_usb_audio videobuf2_core kvm_intel v4l2_common snd_usbmidi_lib snd_hwdep
usbhid videodev media kvm crct10dif_pclmul crc32_pclmul snd_pcm snd_seq_midi
iwlwifi snd_seq_midi_event aesni_intel snd_rawmidi aes_x86_64 lrw gf128mul
glue_helper ablk_helper cryptd snd_seq cfg80211 snd_seq_device idma64 snd_timer
virt_dma snd ir_xmp_decoder intel_lpss_pci shpchp soundcore ir_lirc_codec
[ 18.900353] lirc_dev ir_mce_kbd_decoder ir_sharp_decoder btusb
ir_sanyo_decoder btrtl ir_sony_decoder btbcm btintel ir_jvc_decoder
ir_rc6_decoder ir_rc5_decoder bluetooth ir_nec_decoder mei_me mei rc_rc6_mce
ite_cir rc_core ip6t_REJECT nf_reject_ipv6 nf_log_ipv6 intel_lpss_acpi
intel_lpss acpi_als kfifo_buf xt_hl acpi_pad mac_hid industrialio ip6t_rt
nf_conntrack_ipv6 nf_defrag_ipv6 ipt_REJECT nf_reject_ipv4 nf_log_ipv4
nf_log_common xt_LOG xt_limit xt_tcpudp xt_addrtype nf_conntrack_ipv4
nf_defrag_ipv4 xt_conntrack ip6table_filter ip6_tables nf_conntrack_netbios_ns
nf_conntrack_broadcast nf_nat_ftp nf_nat nf_conntrack_ftp nf_conntrack
iptable_filter ip_tables parport_pc x_tables ppdev lp parport autofs4 i915
e1000e i2c_algo_bit ptp drm_kms_helper pps_core sdhci_pci sdhci drm ahci
libahci video
[ 18.900543] i2c_hid pinctrl_sunrisepoint hid pinctrl_intel
[ 18.900565] CPU: 1 PID: 928 Comm: Xorg Not tainted 4.2.0-35-generic
#40-Ubuntu
[ 18.900574] Hardware name: /NUC6i5SYB, BIOS
SYSKLi35.86A.0042.2016.0409.1246 04/09/2016
[ 18.900582] 0000000000000286 00000000e19f05e8 ffff88008559bcb8
ffffffff817f1d7e
[ 18.900597] 0000000000000000 ffffffffc00ab5a8 ffff88008559bcf8
ffffffff8107cb46
[ 18.900610] ffff88045c3ac000 ffff88008559bdc0 ffff88045bc09060
0000000000000000
[ 18.900630] Call Trace:
[ 18.900652] [<ffffffff817f1d7e>] dump_stack+0x63/0x81
[ 18.900670] [<ffffffff8107cb46>] warn_slowpath_common+0x86/0xc0
[ 18.900684] [<ffffffff8107cc7a>] warn_slowpath_null+0x1a/0x20
[ 18.900754] [<ffffffffc008a0ea>] drm_mode_page_flip_ioctl+0x25a/0x340 [drm]
[ 18.900775] [<ffffffff810a77b0>] ? wake_up_q+0x70/0x70
[ 18.900830] [<ffffffffc0079505>] drm_ioctl+0x125/0x610 [drm]
[ 18.900897] [<ffffffffc0089e90>] ? drm_mode_gamma_get_ioctl+0xe0/0xe0 [drm]
[ 18.900918] [<ffffffff813d3ab9>] ? timerqueue_add+0x59/0xb0
[ 18.900933] [<ffffffff810e9c41>] ? enqueue_hrtimer+0x41/0x90
[ 18.900946] [<ffffffff810ea79d>] ? hrtimer_start_range_ns+0x1cd/0x3d0
[ 18.900965] [<ffffffff81213cd5>] do_vfs_ioctl+0x295/0x480
[ 18.900980] [<ffffffff816d031c>] ? __sys_recvmsg+0x8c/0xa0
[ 18.900994] [<ffffffff81213f39>] SyS_ioctl+0x79/0x90
[ 18.901012] [<ffffffff817f8c72>] entry_SYSCALL_64_fastpath+0x16/0x75
[ 18.901021] ---[ end trace 8e70d1f7eba62526 ]---
[ 18.902209] drm/i915: Resetting chip after gpu hang
[ 20.874816] [drm] RC6 on</pre>
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