Created attachment 112922 [details]
dmesg log

[31797.321348] BUG: unable to handle kernel NULL pointer dereference at           (null)
[31797.321491] IP: [<ffffffff821e94e8>] pipe_write+0x88/0x450
[31797.321558] PGD 14ce36067 PUD 14cd33067 PMD 0
[31797.321608] Oops: 0000 [#1] SMP
[31797.321644] Modules linked in: rfcomm bnep bluetooth 6lowpan_iphc snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic joydev binfmt_misc eeepc_wmi asus_wmi sparse_keymap mxm_wmi intel_rapl intel_powerclamp coretemp kvm_intel kvm arc4 crct10dif_pclmul crc32_pclmul ghash_clmulni_intel cryptd ath9k ath9k_common ath9k_hw ath mac80211 serio_raw lpc_ich cfg80211 snd_hda_intel snd_hda_controller snd_hda_codec snd_hwdep snd_pcm i915 snd_seq_midi snd_seq_midi_event snd_rawmidi snd_seq drm_kms_helper snd_seq_device drm snd_timer mac_hid video i2c_algo_bit parport_pc snd snd_soc_sst_acpi mei_txe tpm_infineon iosf_mbi shpchp ppdev mei wmi soundcore lp parport nls_iso8859_1 hid_chicony usbhid hid psmouse r8169 mii ahci libahci
[31797.322388] CPU: 1 PID: 2493 Comm: wineserver Not tainted 3.16.0-29-generic #39-Ubuntu
[31797.322459] Hardware name: ASUSTeK Computer INC. EB1037/EB1037, BIOS 0606 05/28/2014
[31797.322529] task: ffff88014cda0a30 ti: ffff88014cdbc000 task.ti: ffff88014cdbc000
[31797.322596] RIP: 0010:[<ffffffff821e94e8>]  [<ffffffff821e94e8>] pipe_write+0x88/0x450
[31797.322671] RSP: 0018:ffff88014cdbfdf0  EFLAGS: 00010206
[31797.322719] RAX: 0000000000000001 RBX: 0000000000000040 RCX: 0000000000000000
[31797.322782] RDX: 0000000000000040 RSI: ffff88014cdbfe68 RDI: ffff880088562780
[31797.322845] RBP: ffff88014cdbfe48 R08: 0000000000000040 R09: ffff88014cdbffd8
[31797.322909] R10: 0000000000f1f152 R11: 0000000000000246 R12: ffff880088562780
[31797.322972] R13: ffff8801471a0f00 R14: ffff880088448478 R15: 0000000000000000
[31797.323036] FS:  00007f9f141f5740(0000) GS:ffff88015fc80000(0000) knlGS:0000000000000000
[31797.323108] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[31797.323160] CR2: 0000000000000000 CR3: 000000014ce22000 CR4: 00000000001007e0
[31797.323223] Stack:
[31797.323243]  ffff88014cde6000 ffff88014cda0a30 ffff88014cdbfe70 ffffffff82829340
[31797.323318]  000000034cdbfe50 ffff88014cdbfe68 ffff88014cdbff50 ffff8801471a0f00
[31797.323392]  00007fff5d1f2690 0000000000000040 0000000000000000 ffff88014cdbfef8
[31797.323467] Call Trace:
[31797.323497]  [<ffffffff821e0991>] new_sync_write+0x81/0xb0
[31797.323550]  [<ffffffff821e1177>] vfs_write+0xb7/0x1f0
[31797.323599]  [<ffffffff821e1064>] ? vfs_read+0x124/0x180
[31797.323649]  [<ffffffff821e1d26>] SyS_write+0x46/0xb0
[31797.323699]  [<ffffffff8278a1ad>] system_call_fastpath+0x1a/0x1f
[31797.323753] Code: 8b 4c 24 48 83 e9 01 83 ea 01 21 ca 48 63 d2 48 8d 0c 92 49 8b 94 24 80 00 00 00 4c 8d 34 ca 49 8b 4e 10 41 8b 56 08 45 8b 7e 0c <8b> 31 85 f6 0f 85 ae 02 00 00 66 0f 1f 44 00 00 45 31 ff 31 db
[31797.324089] RIP  [<ffffffff821e94e8>] pipe_write+0x88/0x450
[31797.324146]  RSP <ffff88014cdbfdf0>
[31797.324179] CR2: 0000000000000000
[31797.335746] ---[ end trace e422fcf92a73800b ]---
[31825.462941] [drm] stuck on render ring
[31825.469488] [drm] GPU HANG: ecode 0:0x85fffffd, in Xorg [1569], reason: Ring hung, action: reset
[31825.469495] [drm] GPU hangs can indicate a bug anywhere in the entire gfx stack, including userspace.
[31825.469497] [drm] Please file a _new_ bug report on bugs.freedesktop.org against DRI -> DRM/Intel
[31825.469498] [drm] drm/i915 developers can then reassign to the right component if it's not a kernel issue.
[31825.469500] [drm] The gpu crash dump is required to analyze gpu hangs, so please always attach it.
[31825.469502] [drm] GPU crash dump saved to /sys/class/drm/card0/error
[31827.466874] [drm] Enabling RC6 states: RC6 on, RC6p off, RC6pp off
[31831.474638] [drm] stuck on render ring
[31831.481581] [drm] GPU HANG: ecode 0:0x29fbfbfa, in Xorg [1569], reason: Ring hung, action: reset
[31833.478512] [drm] Enabling RC6 states: RC6 on, RC6p off, RC6pp off
[31837.486140] [drm] stuck on render ring
[31837.493108] [drm] GPU HANG: ecode 0:0x29fbfbfa, in Xorg [1569], reason: Ring hung, action: reset
[31839.490192] [drm] Enabling RC6 states: RC6 on, RC6p off, RC6pp off
[31843.521969] [drm] stuck on render ring
[31843.528560] [drm] GPU HANG: ecode 0:0x85fffffd, in Xorg [1569], reason: Ring hung, action: reset
[31845.525911] [drm] Enabling RC6 states: RC6 on, RC6p off, RC6pp off
[31849.533721] [drm] stuck on render ring
[31849.540194] [drm] GPU HANG: ecode 0:0x85fffffd, in Xorg [1569], reason: Ring hung, action: reset
[31849.550808] [drm:i915_context_is_banned] *ERROR* gpu hanging too fast, banning!
[31851.537659] [drm] Enabling RC6 states: RC6 on, RC6p off, RC6pp off