[Bug 88449] New: Intel Haswell i915 graphic driver issue

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=88449

            Bug ID: 88449
           Summary: Intel Haswell i915 graphic driver issue
           Product: xorg
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: critical
          Priority: medium
         Component: Driver/intel
          Assignee: chris at chris-wilson.co.uk
          Reporter: samuelchueh at asustor.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org

Created attachment 112274
  --> https://bugs.freedesktop.org/attachment.cgi?id=112274&action=edit
Linux kernel message

System environment:
-- chipset: Intel Haswell/Denlow
-- system architecture: 64-bit
-- xf86-video-intel: 2.99.917
-- xserver:1.15
-- mesa:10
-- libdrm:2.4.54
-- kernel: 3.12.20, 3.16.2, 3.18.2
-- Linux distribution: ubuntu

Reproducing steps:
  linux kernel boot exception message happen when environment temperature is
low. kernel dmesg as below:

When Intel i915 driver insert:

[   21.917499] i915 0000:00:02.0: No connectors reported connected with modes
[   21.924407] [drm] Cannot find any crtc or sizes - going 1024x768

When start Xorg :

[   47.236534] WARNING: CPU: 1 PID: 78 at
/asustor/branch2_3/x86_64/source/linux-3.12.20/drivers/gpu/drm/i915/intel_display.c:6035
hsw_disable_lcpll+0xa1/0x53a [i915]()
[   47.251280] Power well on
[   47.253904] Modules linked in: snd_seq_midi snd_usb_audio snd_usbmidi_lib
snd_rawmidi snd_seq_midi_event snd_seq snd_seq_device cryptodev(O)
iptable_filter ip_tables x_tables iscsi_scst(O) scst_vdisk(O) scst(O)
snd_hda_codec_hdmi snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_timer
snd_page_alloc snd i915 drm_kms_helper drm isofs udf crc_itu_t sr_mod cdrom
asleddrv(O) quota_v2 quota_tree dm_crypt [last unloaded: bluetooth]
[   47.292187] CPU: 1 PID: 78 Comm: kworker/1:1 Tainted: G           O 3.12.20
#1
[   47.299401] Hardware name: Intel Corporation Shark Bay Platform/Flathead
Creek, BIOS SBD_3.0.0.247 X64 10/22/2014
[   47.309663] Workqueue: events hsw_enable_pc8_work [i915]
[   47.314993]  0000000000001793 ffff88006b685d08 ffffffff814a8130
ffff88010024dc08
[   47.322441]  ffff88006b685d58 ffff88006b685d48 ffffffff8103ab35
00000000000034d9
[   47.329887]  ffffffffa00f7afa ffff88006d3b0000 ffff88006b50bc48
ffff88006b50b801
[   47.337334] Call Trace:
[   47.339781]  [<ffffffff814a8130>] dump_stack+0x46/0x58
[   47.344920]  [<ffffffff8103ab35>] warn_slowpath_common+0x77/0x91
[   47.350932]  [<ffffffffa00f7afa>] ? hsw_disable_lcpll+0xa1/0x53a [i915]
[   47.357540]  [<ffffffff8103abe3>] warn_slowpath_fmt+0x41/0x43
[   47.363291]  [<ffffffffa0120853>] ? i915_read32+0x91/0x9d [i915]
[   47.369301]  [<ffffffffa00f7afa>] hsw_disable_lcpll+0xa1/0x53a [i915]
[   47.375743]  [<ffffffffa00f849a>] hsw_enable_pc8_work+0xa0/0xa9 [i915]
[   47.382267]  [<ffffffff8104d56d>] process_one_work+0x172/0x232
[   47.388107]  [<ffffffff8104da14>] worker_thread+0x159/0x1ee
[   47.393676]  [<ffffffff8104d8bb>] ? rescuer_thread+0x264/0x264
[   47.399504]  [<ffffffff8104d8bb>] ? rescuer_thread+0x264/0x264
[   47.405349]  [<ffffffff81052c53>] kthread+0x88/0x90
[   47.410223]  [<ffffffff81052bcb>] ? kthread_freezable_should_stop+0x39/0x39
[   47.417169]  [<ffffffff814b17bc>] ret_from_fork+0x7c/0xb0
[   47.422562]  [<ffffffff81052bcb>] ? kthread_freezable_should_stop+0x39/0x39
[   47.429507] ---[ end trace d3b3f133587ed2f1 ]---

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