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<base href="https://bugs.freedesktop.org/">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [CI] igt@drv_suspend@debugfs-reader - dmesg-warn - *ERROR* Panel is unable to calculate any CRC after 6 vblanks"
href="https://bugs.freedesktop.org/show_bug.cgi?id=103337">103337</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>[CI] igt@drv_suspend@debugfs-reader - dmesg-warn - *ERROR* Panel is unable to calculate any CRC after 6 vblanks
</td>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr>
<tr>
<th>Version</th>
<td>DRI git
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Other
</td>
</tr>
<tr>
<th>OS</th>
<td>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>marta.lofstedt@intel.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>CI_DRM_3252 GLK-shards:
[ 264.131055] [drm:intel_dp_sink_crc [i915]] *ERROR* Panel is unable to
calculate any CRC after 6 vblanks
[ 264.155073] Unclaimed read from register 0x130090
[ 264.155190] ------------[ cut here ]------------
[ 264.155268] WARNING: CPU: 0 PID: 2655 at
drivers/gpu/drm/i915/intel_uncore.c:860 __unclaimed_reg_debug+0x47/0x60 [i915]
[ 264.155274] Modules linked in: vgem snd_hda_codec_realtek
snd_hda_codec_generic x86_pkg_temp_thermal intel_powerclamp i915 coretemp
crct10dif_pclmul crc32_pclmul ghash_clmulni_intel snd_hda_intel snd_hda_codec
snd_hwdep snd_hda_core snd_pcm mei_me mei r8169 mii prime_numbers i2c_hid
pinctrl_geminilake pinctrl_intel
[ 264.155404] CPU: 0 PID: 2655 Comm: cat Tainted: G U
4.14.0-rc5-CI-CI_DRM_3252+ #1
[ 264.155410] Hardware name: Intel Corp. Geminilake/GLK RVP2 LP4SD (07), BIOS
GELKRVPA.X64.0062.B30.1708222146 08/22/2017
[ 264.155416] task: ffff880176d6a780 task.stack: ffffc90000e9c000
[ 264.155491] RIP: 0010:__unclaimed_reg_debug+0x47/0x60 [i915]
[ 264.155497] RSP: 0018:ffffc90000e9fcf8 EFLAGS: 00010092
[ 264.155507] RAX: 0000000000000025 RBX: 0000000000000000 RCX:
0000000000000002
[ 264.155513] RDX: 0000000080000002 RSI: ffffffff81d183d7 RDI:
00000000ffffffff
[ 264.155518] RBP: ffffc90000e9fd10 R08: 0000000000000000 R09:
0000000000000001
[ 264.155523] R10: ffffc90000e9fc88 R11: 000000001110455f R12:
0000000000130090
[ 264.155529] R13: 0000000000000001 R14: 0000000000000000 R15:
ffff88016f230bb0
[ 264.155535] FS: 00007f9a86545700(0000) GS:ffff88017fc00000(0000)
knlGS:0000000000000000
[ 264.155541] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 264.155547] CR2: 000055a41dd4f000 CR3: 000000016fc3e000 CR4:
00000000003406f0
[ 264.155552] Call Trace:
[ 264.155631] fwtable_read32+0x243/0x2c0 [i915]
[ 264.155704] i915_drpc_info+0x27d/0x8e0 [i915]
[ 264.155720] seq_read+0xe1/0x3a0
[ 264.155738] full_proxy_read+0x54/0x80
[ 264.155750] __vfs_read+0x28/0x120
[ 264.155767] ? entry_SYSCALL_64_fastpath+0x5/0xb1
[ 264.155776] vfs_read+0xa8/0x150
[ 264.155787] SyS_read+0x49/0xb0
[ 264.155799] entry_SYSCALL_64_fastpath+0x1c/0xb1
[ 264.155805] RIP: 0033:0x7f9a86073890
[ 264.155810] RSP: 002b:00007fff9bc9dfb8 EFLAGS: 00000246 ORIG_RAX:
0000000000000000
[ 264.155821] RAX: ffffffffffffffda RBX: ffffffff81491f73 RCX:
00007f9a86073890
[ 264.155827] RDX: 0000000000020000 RSI: 000055a41dd4c000 RDI:
0000000000000005
[ 264.155832] RBP: ffffc90000e9ff88 R08: 00007f9a8633cb88 R09:
0000000000021010
[ 264.155838] R10: 00007f9a8633cb58 R11: 0000000000000246 R12:
0000000000020000
[ 264.155843] R13: 0000000000000005 R14: 000055a41dd4c000 R15:
0000000000020000
[ 264.155855] ? __this_cpu_preempt_check+0x13/0x20
[ 264.155869] Code: 01 75 31 84 db 75 2d 45 84 ed 48 c7 c0 e8 bd 23 a0 48 c7
c6 de bd 23 a0 48 0f 44 f0 44 89 e2 48 c7 c7 f1 bd 23 a0 e8 ba ff f6 e0 <0f> ff
83 2d c0 16 10 00 01 5b 41 5c 41 5d 5d c3 66 0f 1f 84 00
[ 264.156187] ---[ end trace bb371c712040c418 ]---
[ 264.274836] atkbd serio0: Failed to enable keyboard on isa0060/serio0
<a href="https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_3252/shard-glkb1/igt@drv_suspend@debugfs-reader.html">https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_3252/shard-glkb1/igt@drv_suspend@debugfs-reader.html</a>
Also, CI_DRM_3253
Same warning print without the WARNING
[ 343.551512] [drm:intel_dp_sink_crc [i915]] *ERROR* Panel is unable to
calculate any CRC after 6 vblanks
<a href="https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_3253/shard-glkb1/igt@drv_suspend@debugfs-reader.html">https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_3253/shard-glkb1/igt@drv_suspend@debugfs-reader.html</a></pre>
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