Bug 87666

Summary: [BSW] Only DP screen shows text when DP and HDMI screen are connected
Product: DRI Reporter: Jeff Zheng <jeff.zheng>
Component: DRM/IntelAssignee: Intel GFX Bugs mailing list <intel-gfx-bugs>
Status: CLOSED FIXED QA Contact: Intel GFX Bugs mailing list <intel-gfx-bugs>
Severity: critical    
Priority: high CC: hengx.ding, intel-gfx-bugs, ville.syrjala
Version: unspecified   
Hardware: Other   
OS: All   
Whiteboard:
i915 platform: i915 features:
Attachments:
Description Flags
dmesg none

Description Jeff Zheng 2014-12-24 05:37:52 UTC 
Created attachment 111260 [details]
dmesg

==System Environment==
--------------------------
BIOS version 0.49
Regression: No. I tried -next-queued 2014_08_11 commit fdd508a6419217cce28213f3c9bd27c02a0d4c71 and still saw this issue.

Non-working platforms: BSW

==kernel==
--------------------------
-nightly: 4fa23142a15526f4a4b5df61f26eacdd558a849a(fails)
-queued: 140fd38dc4962ae3694f81900b51c567df1b6d33(test fails in the same way)
-fixes: b0616c5306b342ceca07044dbc4f917d95c4f825(test fails, and none display shows any text. Bug 87253 covers that issue)

==Bug detailed description==
-----------------------------
Boot BSW with DP and HDMI connected, when login appears on DP display, only DP screen shows text. the eDP screen and HDMI screen does not show anything. 

During boot, eDP screen has some text showed, but finally eDP screen is black.

==Reproduce steps==
---------------------------- 
1. Connect DP and HDMI displays to BSW and boot BSW
2. When login appears on DP display, the eDP and HDMI screens do not show anything
3. Running xinit shows xterm on DP display, but eDP and HDMI screen still do not show anything.
Comment 1 Jeff Zheng 2015-01-07 01:42:20 UTC 
Tried on latest -nightly commit cbb440bf6e71044410db1645991fe89b3f57894f with BIOS version 0.51.3 and still saw this issue.

With the new BIOS, DP screen will be black for ~2 seconds, and show text for inconsistent time (1 second ~ 1 minute).
Comment 2 Jeff Zheng 2015-01-16 03:21:13 UTC 
The issue disappears when disabling dynamic memory self refresh in the BIOS
Comment 3 Jani Nikula 2015-01-30 07:11:32 UTC 
(In reply to Jeff Zheng from comment #2)
> The issue disappears when disabling dynamic memory self refresh in the BIOS

Ville, this smells like something that needs a HSD.
Comment 4 Jani Nikula 2015-01-30 07:20:20 UTC 
*** Bug 87223 has been marked as a duplicate of this bug. ***
Comment 5 Jeff Zheng 2015-02-06 08:42:19 UTC 
exists on drm-intel-testing-2015-01-30 with 'dynamic memory self refresh' enabled in the BIOS V55.
Comment 6 Gavin Hindman 2015-02-13 08:20:36 UTC 
Ville should QA be trying the series you posted to the list?
Comment 7 Jeff Zheng 2015-02-28 00:29:56 UTC 
*** Bug 89117 has been marked as a duplicate of this bug. ***
Comment 8 Jeff Zheng 2015-03-05 01:33:17 UTC 
Tried on drm-intel-testing-2015-02-27 + attachment 113995 [details] [review] and this issue still exists.
Comment 9 Jeff Zheng 2015-03-13 02:27:30 UTC 
After upgrading BIOS to v59, this issue does not exist on following ocnfiguration:

Kernel: 4.0.0-rc3_drm-intel-nightly_a2f9de_20150313
BIOS: V59
DP monitor: ASUS PA238Q
HDMI monitor: ASUS VS239HR

Close this bug.
Comment 10 Jeff Zheng 2015-03-13 02:31:45 UTC 
Both 'dynamic memory self refresh' and 'DDR DVFS' are enabled.
Comment 11 Elizabeth 2017-10-06 14:32:51 UTC 
Closing old verified.

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