[Bug 80274] New: [BSW]eDP unable to light up after loading i915 driver

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Fri Jun 20 01:41:06 PDT 2014 

https://bugs.freedesktop.org/show_bug.cgi?id=80274

          Priority: medium
            Bug ID: 80274
                CC: intel-gfx-bugs at lists.freedesktop.org
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: [BSW]eDP unable to light up after loading i915 driver
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: jinxianx.guo at intel.com
          Hardware: Other
            Status: NEW
           Version: unspecified
         Component: DRM/Intel
           Product: DRI

Created attachment 101419
  --> https://bugs.freedesktop.org/attachment.cgi?id=101419&action=edit
dmesg

==System Environment==
--------------------------
Regression: No. 
It's first run tests on BSW

Non-working platforms: BSW

==kernel==
--------------------------
origin/drm-intel-nightly: 78f31a2d50183db12c0532eadcf486b9ebfa5f6d(fails)
    drm-intel-nightly: 2014y-06m-19d-21h-00m-17s integration manifest
origin/drm-intel-next-queued: 9c33baa6b3bbb01c1a88dceba986b20e6642cf31(fails)
    drivers/i915: Fix unnoticed failure of init_ring_common()
origin/drm-intel-fixes: 4a11e398b39b018c7aa3b22267cfdf3b7fae3625(fails)
    drm/i915: cache hw power well enabled state

==Bug detailed description==
-----------------------------
eDP unable to light up after loading i915 driver, and calltrace during boot.

the system is able to connect via ssh

Dmesg shows:

[  601.382533] WARNING: CPU: 0 PID: 1096 at
drivers/gpu/drm/i915/intel_pm.c:6116 vlv_power_well_enabled+0x68/0x91 [i915]()
[  601.382557] Modules linked in: ip6table_filter ip6_tables ipv6
iptable_filter ip_tables ebtable_nat ebtables x_tables dm_mod
snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel
snd_hda_controller snd_hda_codec snd_hwdep snd_pcm pcspkr serio_raw snd_timer
snd soundcore battery ac option usb_wwan usbserial i915 video button
drm_kms_helper drm
[  601.382561] CPU: 0 PID: 1096 Comm: kworker/0:1 Tainted: G        W    
3.15.0-rc8_drm-intel-next-queued_9c33ba_20140620+ #3734
[  601.382566] Workqueue: events console_callback
[  601.382569]  0000000000000000 0000000000000009 ffffffff81772baa
0000000000000000
[  601.382573]  ffffffff81036e54 000000000000000f ffffffffa0068678
ffffffffa00ecae5
[  601.382576]  0000000000030000 0000000000030000 ffff880002c80000
ffff880002c882a0
[  601.382577] Call Trace:
[  601.382582]  [<ffffffff81772baa>] ? dump_stack+0x41/0x51
[  601.382586]  [<ffffffff81036e54>] ? warn_slowpath_common+0x78/0x90
[  601.382606]  [<ffffffffa0068678>] ? vlv_power_well_enabled+0x68/0x91 [i915]
[  601.382626]  [<ffffffffa0068678>] ? vlv_power_well_enabled+0x68/0x91 [i915]
[  601.382647]  [<ffffffffa0069e16>] ? check_power_well_state+0xf/0x6f [i915]
[  601.382668]  [<ffffffffa006df70>] ? intel_display_power_get+0x82/0xb9 [i915]
[  601.382695]  [<ffffffffa00c1ffb>] ? _edp_panel_vdd_on+0x58/0x15f [i915]
[  601.382723]  [<ffffffffa00c2660>] ? intel_dp_aux_ch+0x3f/0x5ae [i915]
[  601.382751]  [<ffffffffa00b488f>] ? vlv_sideband_rw+0x21f/0x2bb [i915]
[  601.382755]  [<ffffffff8104003b>] ? try_to_del_timer_sync+0x46/0x51
[  601.382783]  [<ffffffffa00c2cc6>] ? intel_dp_aux_transfer+0xf7/0x11f [i915]
[  601.382786]  [<ffffffff81777332>] ? mutex_lock+0x9/0x25
[  601.382793]  [<ffffffffa004a450>] ? drm_dp_dpcd_access+0x61/0xe7
[drm_kms_helper]
[  601.382820]  [<ffffffffa009993c>] ? chv_read64+0x221/0x221 [i915]
[  601.382827]  [<ffffffffa004a4e9>] ? drm_dp_dpcd_write+0x13/0x17
[drm_kms_helper]
[  601.382854]  [<ffffffffa00c359b>] ? intel_dp_sink_dpms+0x35/0x8f [i915]
[  601.382881]  [<ffffffffa00c3627>] ? intel_disable_dp+0x32/0x5a [i915]
[  601.382910]  [<ffffffffa00ad1db>] ? i9xx_crtc_disable+0x69/0x3c8 [i915]
[  601.382939]  [<ffffffffa00a7771>] ? intel_crtc_update_dpms+0xbd/0x11d [i915]
[  601.382967]  [<ffffffffa00aff0a>] ? intel_connector_dpms+0x3f/0x4a [i915]
[  601.382973]  [<ffffffffa004d32f>] ? drm_fb_helper_dpms.isra.7+0x83/0xd0
[drm_kms_helper]
[  601.382979]  [<ffffffffa004d3ae>] ? drm_fb_helper_blank+0x32/0x3c
[drm_kms_helper]
[  601.382983]  [<ffffffff8135e287>] ? fb_blank+0x51/0x84
[  601.382987]  [<ffffffff81356f60>] ? fbcon_blank+0x119/0x230
[  601.382992]  [<ffffffff8103ffd1>] ? lock_timer_base.isra.37+0x23/0x47
[  601.382996]  [<ffffffff8104003b>] ? try_to_del_timer_sync+0x46/0x51
[  601.383000]  [<ffffffff813aae31>] ? do_blank_screen+0x184/0x24f
[  601.383004]  [<ffffffff813ad35b>] ? console_callback+0xc6/0xed
[  601.383008]  [<ffffffff8104aade>] ? process_one_work+0x1e2/0x363
[  601.383012]  [<ffffffff8104b385>] ? worker_thread+0x1c7/0x2bc
[  601.383016]  [<ffffffff8104b1be>] ? manage_workers.isra.23+0x1b5/0x1b5
[  601.383019]  [<ffffffff8104fb32>] ? kthread+0xc5/0xcd
[  601.383023]  [<ffffffff8104fa6d>] ? kthread_freezable_should_stop+0x40/0x40
[  601.383027]  [<ffffffff8177e97c>] ? ret_from_fork+0x7c/0xb0
[  601.383031]  [<ffffffff8104fa6d>] ? kthread_freezable_should_stop+0x40/0x40
[  601.383033] ---[ end trace cf182eec4eb73319 ]---

[  601.383054] WARNING: CPU: 0 PID: 1096 at
drivers/gpu/drm/i915/intel_pm.c:6178 check_power_well_state+0x69/0x6f [i915]()
[  601.383056] state mismatch for 'dpio-tx-c-01' (always_on 0 hw state 0
use-count 146 disable_power_well 1
[  601.383080] Modules linked in: ip6table_filter ip6_tables ipv6
iptable_filter ip_tables ebtable_nat ebtables x_tables dm_mod
snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel
snd_hda_controller snd_hda_codec snd_hwdep snd_pcm pcspkr serio_raw snd_timer
snd soundcore battery ac option usb_wwan usbserial i915 video button
drm_kms_helper drm
[  601.383083] CPU: 0 PID: 1096 Comm: kworker/0:1 Tainted: G        W    
3.15.0-rc8_drm-intel-next-queued_9c33ba_20140620+ #3734
[  601.383087] Workqueue: events console_callback
[  601.383091]  0000000000000000 0000000000000009 ffffffff81772baa
ffff8800731af918
[  601.383094]  ffffffff81036e54 0000000000000000 ffffffffa0069e70
ffffffff8333a6a8
[  601.383098]  ffffffffa00fee90 ffffffffa00fee90 0000000000000004
0000000000008000
[  601.383098] Call Trace:
[  601.383103]  [<ffffffff81772baa>] ? dump_stack+0x41/0x51
[  601.383107]  [<ffffffff81036e54>] ? warn_slowpath_common+0x78/0x90
[  601.383127]  [<ffffffffa0069e70>] ? check_power_well_state+0x69/0x6f [i915]
[  601.383132]  [<ffffffff81036f04>] ? warn_slowpath_fmt+0x45/0x4a
[  601.383152]  [<ffffffffa0068695>] ? vlv_power_well_enabled+0x85/0x91 [i915]
[  601.383173]  [<ffffffffa0069e70>] ? check_power_well_state+0x69/0x6f [i915]
[  601.383194]  [<ffffffffa006df70>] ? intel_display_power_get+0x82/0xb9 [i915]
[  601.383221]  [<ffffffffa00c1ffb>] ? _edp_panel_vdd_on+0x58/0x15f [i915]
[  601.383249]  [<ffffffffa00c2660>] ? intel_dp_aux_ch+0x3f/0x5ae [i915]
[  601.383277]  [<ffffffffa00b488f>] ? vlv_sideband_rw+0x21f/0x2bb [i915]
[  601.383281]  [<ffffffff8104003b>] ? try_to_del_timer_sync+0x46/0x51
[  601.383309]  [<ffffffffa00c2cc6>] ? intel_dp_aux_transfer+0xf7/0x11f [i915]
[  601.383312]  [<ffffffff81777332>] ? mutex_lock+0x9/0x25
[  601.383319]  [<ffffffffa004a450>] ? drm_dp_dpcd_access+0x61/0xe7
[drm_kms_helper]
[  601.383346]  [<ffffffffa009993c>] ? chv_read64+0x221/0x221 [i915]
[  601.383353]  [<ffffffffa004a4e9>] ? drm_dp_dpcd_write+0x13/0x17
[drm_kms_helper]
[  601.383380]  [<ffffffffa00c359b>] ? intel_dp_sink_dpms+0x35/0x8f [i915]
[  601.383407]  [<ffffffffa00c3627>] ? intel_disable_dp+0x32/0x5a [i915]
[  601.383436]  [<ffffffffa00ad1db>] ? i9xx_crtc_disable+0x69/0x3c8 [i915]
[  601.383465]  [<ffffffffa00a7771>] ? intel_crtc_update_dpms+0xbd/0x11d [i915]
[  601.383493]  [<ffffffffa00aff0a>] ? intel_connector_dpms+0x3f/0x4a [i915]
[  601.383508]  [<ffffffffa004d32f>] ? drm_fb_helper_dpms.isra.7+0x83/0xd0
[drm_kms_helper]
[  601.383515]  [<ffffffffa004d3ae>] ? drm_fb_helper_blank+0x32/0x3c
[drm_kms_helper]
[  601.383518]  [<ffffffff8135e287>] ? fb_blank+0x51/0x84
[  601.383523]  [<ffffffff81356f60>] ? fbcon_blank+0x119/0x230
[  601.383527]  [<ffffffff8103ffd1>] ? lock_timer_base.isra.37+0x23/0x47
[  601.383531]  [<ffffffff8104003b>] ? try_to_del_timer_sync+0x46/0x51
[  601.383535]  [<ffffffff813aae31>] ? do_blank_screen+0x184/0x24f
[  601.383539]  [<ffffffff813ad35b>] ? console_callback+0xc6/0xed
[  601.383543]  [<ffffffff8104aade>] ? process_one_work+0x1e2/0x363
[  601.383547]  [<ffffffff8104b385>] ? worker_thread+0x1c7/0x2bc
[  601.383551]  [<ffffffff8104b1be>] ? manage_workers.isra.23+0x1b5/0x1b5
[  601.383555]  [<ffffffff8104fb32>] ? kthread+0xc5/0xcd
[  601.383559]  [<ffffffff8104fa6d>] ? kthread_freezable_should_stop+0x40/0x40
[  601.383562]  [<ffffffff8177e97c>] ? ret_from_fork+0x7c/0xb0
[  601.383566]  [<ffffffff8104fa6d>] ? kthread_freezable_should_stop+0x40/0x40
[  601.383568] ---[ end trace cf182eec4eb7331a ]---

[  601.602051] WARNING: CPU: 0 PID: 1096 at drivers/gpu/drm/i915/intel_dp.c:370
intel_dp_aux_ch+0xa2/0x5ae [i915]()
[  601.602052] eDP powered off while attempting aux channel communication.
[  601.602076] Modules linked in: ip6table_filter ip6_tables ipv6
iptable_filter ip_tables ebtable_nat ebtables x_tables dm_mod
snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel
snd_hda_controller snd_hda_codec snd_hwdep snd_pcm pcspkr serio_raw snd_timer
snd soundcore battery ac option usb_wwan usbserial i915 video button
drm_kms_helper drm
[  601.602079] CPU: 0 PID: 1096 Comm: kworker/0:1 Tainted: G        W    
3.15.0-rc8_drm-intel-next-queued_9c33ba_20140620+ #3734
[  601.602083] Workqueue: events console_callback
[  601.602087]  0000000000000000 0000000000000009 ffffffff81772baa
ffff8800731af9b8
[  601.602090]  ffffffff81036e54 00000000000c0000 ffffffffa00c26c3
00000000000c0000
[  601.602093]  ffff8800774b78d8 ffff880002c80000 ffff880002c80000
0000000000000001
[  601.602094] Call Trace:
[  601.602099]  [<ffffffff81772baa>] ? dump_stack+0x41/0x51
[  601.602103]  [<ffffffff81036e54>] ? warn_slowpath_common+0x78/0x90
[  601.602130]  [<ffffffffa00c26c3>] ? intel_dp_aux_ch+0xa2/0x5ae [i915]
[  601.602134]  [<ffffffff81036f04>] ? warn_slowpath_fmt+0x45/0x4a
[  601.602162]  [<ffffffffa00c26c3>] ? intel_dp_aux_ch+0xa2/0x5ae [i915]
[  601.602190]  [<ffffffffa00b488f>] ? vlv_sideband_rw+0x21f/0x2bb [i915]
[  601.602194]  [<ffffffff8104003b>] ? try_to_del_timer_sync+0x46/0x51
[  601.602222]  [<ffffffffa00c2cc6>] ? intel_dp_aux_transfer+0xf7/0x11f [i915]
[  601.602226]  [<ffffffff81777332>] ? mutex_lock+0x9/0x25
[  601.602232]  [<ffffffffa004a450>] ? drm_dp_dpcd_access+0x61/0xe7
[drm_kms_helper]
[  601.602260]  [<ffffffffa009993c>] ? chv_read64+0x221/0x221 [i915]
[  601.602266]  [<ffffffffa004a4e9>] ? drm_dp_dpcd_write+0x13/0x17
[drm_kms_helper]
[  601.602293]  [<ffffffffa00c359b>] ? intel_dp_sink_dpms+0x35/0x8f [i915]
[  601.602321]  [<ffffffffa00c3627>] ? intel_disable_dp+0x32/0x5a [i915]
[  601.602349]  [<ffffffffa00ad1db>] ? i9xx_crtc_disable+0x69/0x3c8 [i915]
[  601.602378]  [<ffffffffa00a7771>] ? intel_crtc_update_dpms+0xbd/0x11d [i915]
[  601.602406]  [<ffffffffa00aff0a>] ? intel_connector_dpms+0x3f/0x4a [i915]
[  601.602413]  [<ffffffffa004d32f>] ? drm_fb_helper_dpms.isra.7+0x83/0xd0
[drm_kms_helper]
[  601.602419]  [<ffffffffa004d3ae>] ? drm_fb_helper_blank+0x32/0x3c
[drm_kms_helper]
[  601.602422]  [<ffffffff8135e287>] ? fb_blank+0x51/0x84
[  601.602427]  [<ffffffff81356f60>] ? fbcon_blank+0x119/0x230
[  601.602431]  [<ffffffff8103ffd1>] ? lock_timer_base.isra.37+0x23/0x47
[  601.602435]  [<ffffffff8104003b>] ? try_to_del_timer_sync+0x46/0x51
[  601.602439]  [<ffffffff813aae31>] ? do_blank_screen+0x184/0x24f
[  601.602443]  [<ffffffff813ad35b>] ? console_callback+0xc6/0xed
[  601.602447]  [<ffffffff8104aade>] ? process_one_work+0x1e2/0x363
[  601.602451]  [<ffffffff8104b385>] ? worker_thread+0x1c7/0x2bc
[  601.602455]  [<ffffffff8104b1be>] ? manage_workers.isra.23+0x1b5/0x1b5
[  601.602459]  [<ffffffff8104fb32>] ? kthread+0xc5/0xcd
[  601.602463]  [<ffffffff8104fa6d>] ? kthread_freezable_should_stop+0x40/0x40
[  601.602466]  [<ffffffff8177e97c>] ? ret_from_fork+0x7c/0xb0
[  601.602470]  [<ffffffff8104fa6d>] ? kthread_freezable_should_stop+0x40/0x40
[  601.602472] ---[ end trace cf182eec4eb7331e ]---


==Reproduce steps==
---------------------------- 
1. Boot the device with eDP

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