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<base href="https://bugs.freedesktop.org/" />
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<body><table border="1" cellspacing="0" cellpadding="8">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Intel Haswell i915 graphic driver issue"
href="https://bugs.freedesktop.org/show_bug.cgi?id=88449">88449</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Intel Haswell i915 graphic driver issue
</td>
</tr>
<tr>
<th>Product</th>
<td>xorg
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Hardware</th>
<td>x86-64 (AMD64)
</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>Driver/intel
</td>
</tr>
<tr>
<th>Assignee</th>
<td>chris@chris-wilson.co.uk
</td>
</tr>
<tr>
<th>Reporter</th>
<td>samuelchueh@asustor.com
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=112274" name="attach_112274" title="Linux kernel message">attachment 112274</a> <a href="attachment.cgi?id=112274&action=edit" title="Linux kernel message">[details]</a></span>
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 ]---</pre>
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