igt@kms_big_fb@.* - incomplete - *ERROR* DC state mismatch, drm_WARN_ON(intel_cdclk_needs_modeset(&dev_priv->cdclk.hw, &cdclk_config))
https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_503/fi-tgl-y/igt@kms_big_fb@y-tiled-64bpp-rotate-0.html#dmesg-warnings193
<7> [435.518330] i915 0000:00:02.0: [drm:intel_panel_actually_set_backlight [i915]] set backlight PWM = 0
<7> [435.519276] i915 0000:00:02.0: [drm:intel_disable_pipe [i915]] disabling pipe A
<7> [435.531280] i915 0000:00:02.0: [drm:intel_power_well_enable [i915]] enabling DC off
<7> [435.924763] i915 0000:00:02.0: [drm:gen9_set_dc_state [i915]] Setting DC state from 00 to 00
<3> [435.924901] i915 0000:00:02.0: [drm] *ERROR* DC state mismatch (0x2 -> 0x0)
<4> [439.857801] ------------[ cut here ]------------
<4> [439.857829] i915 0000:00:02.0: drm_WARN_ON(intel_cdclk_needs_modeset(&dev_priv->cdclk.hw, &cdclk_config))
<4> [439.858292] WARNING: CPU: 5 PID: 1081 at drivers/gpu/drm/i915/display/intel_display_power.c:1188 gen9_disable_dc_states+0x1f4/0x270 [i915]
<4> [439.858310] Modules linked in: vgem snd_hda_codec_hdmi mei_hdcp i915 x86_pkg_temp_thermal coretemp crct10dif_pclmul crc32_pclmul ghash_clmulni_intel snd_hda_intel snd_intel_dspcfg snd_hda_codec cdc_ether snd_hwdep e1000e usbnet snd_hda_core mii ptp snd_pcm pps_core mei_me mei intel_lpss_pci prime_numbers
<4> [439.858407] CPU: 5 PID: 1081 Comm: kms_big_fb Tainted: G U 5.7.0-rc6-g45d3c97aa28bbd-drmtip_503+ #1
<4> [439.858421] Hardware name: Intel Corporation Tiger Lake Client Platform/TigerLake Y LPDDR4x T4 Crb, BIOS TGLSFWI1.R00.2457.A16.1912270059 12/27/2019
<4> [439.858774] RIP: 0010:gen9_disable_dc_states+0x1f4/0x270 [i915]
<4> [439.858793] Code: 8b 7b 18 48 8b 6f 50 48 85 ed 74 7e e8 f5 92 04 c8 48 c7 c1 c8 fb 7b c0 48 89 ea 48 89 c6 48 c7 c7 53 8e 7e c0 e8 8c 21 9f c7 <0f> 0b e9 80 fe ff ff 48 8b 00 48 89 df 8b 70 20 e8 27 51 00 00 e9
<4> [439.858807] RSP: 0018:ffffb3c2805f77b8 EFLAGS: 00010286
<4> [439.858824] RAX: 0000000000000000 RBX: ffff921fb77d0000 RCX: 0000000000000006
<4> [439.858837] RDX: ffff921fc9efc040 RSI: ffff921fc9efc978 RDI: ffffffff893576d2
<4> [439.858850] RBP: ffff921fdfa8e740 R08: ffff921fc9efc978 R09: 0000000000000000
<4> [439.858863] R10: 0000000000000000 R11: 0000000000000000 R12: 0000010000000000
<4> [439.858876] R13: 0000000000000028 R14: ffff921fcb5ca128 R15: ffff921fb77d0000
<4> [439.858892] FS: 00007f5360b4b300(0000) GS:ffff921fe4080000(0000) knlGS:0000000000000000
<4> [439.858906] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
<4> [439.858919] CR2: 00007ffed98eaff4 CR3: 000000039387a001 CR4: 0000000000760ee0
<4> [439.858932] PKRU: 55555554
<4> [439.858944] Call Trace:
<4> [439.859312] intel_power_well_enable+0x39/0x40 [i915]
<4> [439.859647] __intel_display_power_get_domain.part.24+0x69/0x80 [i915]
<4> [439.859969] intel_display_power_get+0x46/0x60 [i915]
<4> [439.860290] intel_dp_aux_xfer+0xd3/0x9c0 [i915]
<4> [439.860360] ? __mutex_lock+0x9a/0x9c0
<4> [439.860378] ? __mutex_lock+0x391/0x9c0
<4> [439.860410] ? __lock_acquire+0x90e/0x1f50
<4> [439.860740] intel_dp_aux_transfer+0x12f/0x270 [i915]
<4> [439.860793] drm_dp_dpcd_access+0x76/0x110
<4> [439.860843] drm_dp_dpcd_write+0x2a/0xb0
<4> [439.861147] intel_dp_sink_dpms+0xcc/0x110 [i915]
<4> [439.861449] intel_ddi_post_disable+0x192/0x3d0 [i915]
<4> [439.861778] intel_encoders_post_disable+0x79/0x90 [i915]
<4> [439.862091] intel_old_crtc_state_disables.isra.145+0x120/0x190 [i915]
<4> [439.862423] intel_atomic_commit_tail+0xa48/0x1470 [i915]
<4> [439.862451] ? _raw_spin_unlock_irqrestore+0x34/0x60
<4> [439.862482] ? debug_object_assert_init+0xd0/0x180
<4> [439.862506] ? _raw_spin_unlock_irqrestore+0x47/0x60
<4> [439.862524] ? lockdep_hardirqs_on+0xe0/0x1c0
<4> [439.862548] ? _raw_spin_unlock_irqrestore+0x34/0x60
<4> [439.862797] ? __i915_sw_fence_complete+0x30/0x250 [i915]
<4> [439.863024] ? __i915_sw_fence_complete+0x30/0x250 [i915]
<4> [439.863353] intel_atomic_commit+0x3d8/0x440 [i915]
<4> [439.863395] drm_mode_atomic_ioctl+0x872/0x990
<4> [439.863504] ? drm_atomic_set_property+0x9b0/0x9b0
<4> [439.863542] drm_ioctl_kernel+0xb0/0xf0
<4> [439.863587] drm_ioctl+0x305/0x3c0
<4> [439.863632] ? drm_atomic_set_property+0x9b0/0x9b0
<4> [439.863679] ? pid_task+0x80/0x80
<4> [439.863702] ? find_held_lock+0x2d/0x90
<4> [439.863735] ? __task_pid_nr_ns+0xd3/0x1d0
<4> [439.863773] ksys_ioctl+0x7b/0x90
<4> [439.863806] __x64_sys_ioctl+0x11/0x20
<4> [439.863826] do_syscall_64+0x4f/0x240
<4> [439.863853] entry_SYSCALL_64_after_hwframe+0x49/0xb3
<4> [439.863868] RIP: 0033:0x7f535fb8d5d7
<4> [439.863885] Code: b3 66 90 48 8b 05 b1 48 2d 00 64 c7 00 26 00 00 00 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 81 48 2d 00 f7 d8 64 89 01 48
<4> [439.863898] RSP: 002b:00007ffdd4105708 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
<4> [439.863916] RAX: ffffffffffffffda RBX: 000055d13856b2f0 RCX: 00007f535fb8d5d7
<4> [439.863930] RDX: 00007ffdd4105760 RSI: 00000000c03864bc RDI: 0000000000000005
<4> [439.863942] RBP: 00007ffdd4105760 R08: 000055d1385cee10 R09: 000000000000001f
<4> [439.863955] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000c03864bc
<4> [439.863968] R13: 0000000000000005 R14: 0000000000000000 R15: 0000000000000400
<4> [439.864044] irq event stamp: 5195814
<4> [439.864063] hardirqs last enabled at (5195813): [<ffffffff8813ae1c>] vprintk_emit+0xcc/0x330
<4> [439.864082] hardirqs last disabled at (5195814): [<ffffffff88001e90>] trace_hardirqs_off_thunk+0x1a/0x1c
<4> [439.864099] softirqs last enabled at (5195802): [<ffffffff88e00395>] __do_softirq+0x395/0x49e
<4> [439.864116] softirqs last disabled at (5195771): [<ffffffff880c1b4a>] irq_exit+0xba/0xc0
<4> [439.864129] ---[ end trace aebe57b67a54408a ]---
Edited by LAKSHMINARAYANA VUDUM