[Bug 112051] New: Got call trace message "eDP powered off while attempting aux channel communication" while boot up

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=112051

            Bug ID: 112051
           Summary: Got call trace message "eDP powered off while
                    attempting aux channel communication" while boot up
           Product: DRI
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: not set
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: cyrus.lien at canonical.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 145771
  --> https://bugs.freedesktop.org/attachment.cgi?id=145771&action=edit
dmesg

Bug description:

Got the call trace message during system boot up.

[    2.999233] ------------[ cut here ]------------
[    2.999238] eDP powered off while attempting aux channel communication.
[    2.999338] WARNING: CPU: 2 PID: 296 at
drivers/gpu/drm/i915/display/intel_dp.c:1148 intel_dp_aux_xfer+0x767/0x900
[i915]
[    2.999341] Modules linked in: i915(+) i2c_algo_bit drm_kms_helper
syscopyarea sysfillrect sysimgblt fb_sys_fops drm r8169 ahci realtek libahci
wmi video
[    2.999350] CPU: 2 PID: 296 Comm: systemd-udevd Not tainted
5.3.0-997-generic #201910072204
[    2.999352] Hardware name: Dell Inc. OptiPlex 3280 AIO/, BIOS 99.00.08
10/01/2019
[    2.999391] RIP: 0010:intel_dp_aux_xfer+0x767/0x900 [i915]
[    2.999394] Code: e8 ee b5 ff ff 84 c0 0f 85 ec f9 ff ff 48 8b 7d 80 e8 5d
b6 ff ff 84 c0 0f 85 db f9 ff ff 48 c7 c7 50 22 5d c0 e8 84 ea b5 d1 <0f> 0b 48
8b 7d 80 48 8d 75 90 4c 8d ab a8 07 00 00 e8 63 b4 ff ff
[    2.999398] RSP: 0018:ffffb7000040b5b8 EFLAGS: 00010286
[    2.999400] RAX: 0000000000000000 RBX: ffff9bfa9dc20000 RCX:
0000000000000396
[    2.999402] RDX: 0000000000000001 RSI: 0000000000000082 RDI:
0000000000000246
[    2.999404] RBP: ffffb7000040b698 R08: 0000000000000396 R09:
0000000000000019
[    2.999406] R10: 000000000000072e R11: ffffb7000040b420 R12:
0000000000000004
[    2.999408] R13: ffff9bfa9fbca120 R14: ffff9bfa9dc20000 R15:
ffff9bfa9dc207a8
[    2.999410] FS:  00007f0d8613a680(0000) GS:ffff9bfaaec80000(0000)
knlGS:0000000000000000
[    2.999412] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.999414] CR2: 00007ffca955ae58 CR3: 000000041e67e002 CR4:
00000000003606e0
[    2.999416] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[    2.999418] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
0000000000000400
[    2.999420] Call Trace:
[    2.999425]  ? vprintk_default+0x29/0x50
[    2.999464]  intel_dp_aux_transfer+0x15e/0x220 [i915]
[    2.999472]  drm_dp_dpcd_access+0x72/0x110 [drm_kms_helper]
[    2.999478]  drm_dp_dpcd_read+0x33/0xc0 [drm_kms_helper]
[    2.999515]  intel_dp_read_dpcd+0x41/0x130 [i915]
[    2.999551]  intel_edp_init_connector+0x136/0x540 [i915]
[    2.999587]  intel_dp_init_connector+0x47f/0x870 [i915]
[    2.999623]  intel_ddi_init+0x425/0x590 [i915]
[    2.999660]  intel_setup_outputs+0x8e4/0xc60 [i915]

System environment:
-- chipset: CML-S
-- system architecture: 64-bit
-- xf86-video-intel: xserver-xorg-video-intel-hwe-18.04
2:2.99.917+git20171229-1ubuntu1~18.04.1
-- xserver: xserver-xorg-core-hwe-18.04 2:1.20.4-1ubuntu3~18.04.2
-- mesa: 19.0.8-0ubuntu0~18.04.3 
-- libdrm: 2.4.99-1
-- kernel: 5.2.9-arch1-1-ARCH
-- Linux distribution: Ubuntu
-- Machine or mobo model:  Dell Inc. OptiPlex 3280 AIO
-- Display connector: eDP-1

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