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<head>
<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] REG_WAIT timeout 10us * 3000 tries - dce110_stream_encoder_dp_blank line:943"
href="https://bugs.freedesktop.org/show_bug.cgi?id=110283">110283</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>[drm] REG_WAIT timeout 10us * 3000 tries - dce110_stream_encoder_dp_blank line:943
</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>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/AMDgpu
</td>
</tr>
<tr>
<th>Assignee</th>
<td>dri-devel@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>pmenzel+bugs.freedesktop.org@molgen.mpg.de
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=143807" name="attach_143807" title="Linux 5.0.5 messages">attachment 143807</a> <a href="attachment.cgi?id=143807&action=edit" title="Linux 5.0.5 messages">[details]</a></span>
Linux 5.0.5 messages
With Linux 5.0.5, the warning below is shown. This message has not been logged
before.
$ lspci -nn -s 01:00
01:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc.
[AMD/ATI] Ellesmere [Radeon Pro WX 5100] [1002:67c7]
01:00.1 Audio device [0403]: Advanced Micro Devices, Inc. [AMD/ATI] Ellesmere
[Radeon RX 580] [1002:aaf0]
$ more /proc/version
Linux version 5.0.5.mx64.253 (<a href="mailto:root@holidayincambodia.molgen.mpg.de">root@holidayincambodia.molgen.mpg.de</a>) (gcc versio
n 7.3.0 (GCC)) #1 SMP Thu Mar 28 09:29:08 CET 2019
$ dmesg
[…]
[ 12.174842] [drm] REG_WAIT timeout 10us * 3000 tries -
dce110_stream_encoder_dp_blank line:943
[ 12.174863] WARNING: CPU: 5 PID: 124 at
drivers/gpu/drm/amd/amdgpu/../display/dc/dc_helper.c:249
generic_reg_wait+0x1a5/0x1b0 [amdgpu]
[ 12.174864] Modules linked in: snd_hda_codec_generic i915 input_leds
led_class amdgpu chash gpu_sched snd_hda_codec_hdmi ttm snd_hda_intel iosf_mbi
wmi_bmof drm_kms_helper snd_hda_codec x86_pkg_temp_thermal snd_hda_core
kvm_intel drm kvm intel_gtt snd_pcm fb_sys_fops syscopyarea sysfillrect
sysimgblt snd_timer snd irqbypass crc32c_intel video soundcore wmi nfsd
auth_rpcgss oid_registry nfs_acl lockd grace sunrpc efivarfs ip_tables x_tables
unix ipv6 autofs4
[ 12.174875] CPU: 5 PID: 124 Comm: kworker/5:1 Not tainted 5.0.5.mx64.253 #1
[ 12.174875] Hardware name: Dell Inc. Precision 3630 Tower/0NNNCT, BIOS 1.0.4
07/17/2018
[ 12.174878] Workqueue: events_long drm_dp_mst_link_probe_work
[drm_kms_helper]
[ 12.174887] RIP: 0010:generic_reg_wait+0x1a5/0x1b0 [amdgpu]
[ 12.174888] Code: 44 8b 44 24 68 48 8b 4c 24 60 89 ee 8b 54 24 58 48 c7 c7
30 fe 89 a0 41 89 c7 e8 a4 e2 8a e0 41 83 7d 20 01 0f 84 51 ff ff ff <0f> 0b e9
4a ff ff ff 0f 1f 40 00 0f 1f 44 00 00 41 57 41 56 41 89
[ 12.174889] RSP: 0018:ffffc90001ffb828 EFLAGS: 00010297
[ 12.174889] RAX: 0000000000000052 RBX: 0000000000000bb9 RCX:
0000000000000000
[ 12.174890] RDX: 0000000000000000 RSI: ffff88846c155508 RDI:
ffff88846c155508
[ 12.174890] RBP: 000000000000000a R08: 0000000000000000 R09:
000000000001f280
[ 12.174891] R10: 0000000000000000 R11: 0000000000000000 R12:
0000000000004ea4
[ 12.174891] R13: ffff888451c99900 R14: 0000000000010000 R15:
0000000000010200
[ 12.174892] FS: 0000000000000000(0000) GS:ffff88846c140000(0000)
knlGS:0000000000000000
[ 12.174892] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 12.174893] CR2: 00005600d27a8550 CR3: 000000000220e006 CR4:
00000000003606e0
[ 12.174893] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[ 12.174893] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
0000000000000400
[ 12.174894] Call Trace:
[ 12.174913] dce110_stream_encoder_dp_blank+0x157/0x2e0 [amdgpu]
[ 12.174926] power_down_all_hw_blocks+0x3d/0x1d0 [amdgpu]
[ 12.174938] dce110_enable_accelerated_mode+0x5d/0x230 [amdgpu]
[ 12.174948] dc_commit_state+0x211/0x4f0 [amdgpu]
[ 12.174953] ? drm_calc_timestamping_constants+0xeb/0x150 [drm]
[ 12.174971] amdgpu_dm_atomic_commit_tail+0x371/0xbe0 [amdgpu]
[ 12.174982] ? amdgpu_bo_pin_restricted+0x68/0x290 [amdgpu]
[ 12.174984] ? wait_for_common+0x3d/0x180
[ 12.174984] ? _cond_resched+0x15/0x40
[ 12.174985] ? wait_for_common+0x3d/0x180
[ 12.174988] commit_tail+0x3d/0x70 [drm_kms_helper]
[ 12.174991] drm_atomic_helper_commit+0xfc/0x110 [drm_kms_helper]
[ 12.174993] restore_fbdev_mode_atomic+0x1d3/0x1f0 [drm_kms_helper]
[ 12.174995] drm_fb_helper_restore_fbdev_mode_unlocked+0x45/0x90
[drm_kms_helper]
[ 12.174997] drm_fb_helper_set_par+0x29/0x50 [drm_kms_helper]
[ 12.174999] fbcon_init+0x435/0x600
[ 12.175001] visual_init+0xce/0x130
[ 12.175002] do_bind_con_driver+0x1f7/0x410
[ 12.175003] do_take_over_console+0x76/0x1a0
[ 12.175004] do_fbcon_takeover+0x58/0xb0
[ 12.175006] notifier_call_chain+0x47/0x70
[ 12.175007] blocking_notifier_call_chain+0x3e/0x60
[ 12.175008] register_framebuffer+0x24f/0x360
[ 12.175010] __drm_fb_helper_initial_config_and_unlock+0x220/0x430
[drm_kms_helper]
[ 12.175013] drm_kms_helper_hotplug_event+0x26/0x30 [drm_kms_helper]
[ 12.175015] drm_dp_send_link_address+0x172/0x1e0 [drm_kms_helper]
[ 12.175017] drm_dp_check_and_send_link_address+0x87/0xc0 [drm_kms_helper]
[ 12.175019] drm_dp_mst_link_probe_work+0x4b/0x70 [drm_kms_helper]
[ 12.175021] process_one_work+0x1d4/0x410
[ 12.175022] worker_thread+0x2d/0x3c0
[ 12.175023] ? process_one_work+0x410/0x410
[ 12.175024] kthread+0x113/0x130
[ 12.175025] ? kthread_park+0x90/0x90
[ 12.175026] ret_from_fork+0x35/0x40
[ 12.175027] ---[ end trace 8ae1ae68114a58cf ]---
[…]</pre>
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