Bug 54764 - [ILK regression] DP display some mode not able to light up
Summary: [ILK regression] DP display some mode not able to light up
Status: CLOSED FIXED
Alias: None
Product: DRI
Classification: Unclassified
Component: DRM/Intel (show other bugs)
Version: unspecified
Hardware: Other All
: medium normal
Assignee: Daniel Vetter
QA Contact: Intel GFX Bugs mailing list
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2012-09-11 09:30 UTC by shui yangwei
Modified: 2017-10-06 14:48 UTC (History)
5 users (show)

See Also:
i915 platform:
i915 features:

Attachments
ILK (e6510) dp display dmesg (123.36 KB, text/plain)
2012-09-11 09:30 UTC, shui yangwei 		no flags Details
dmesg of some display modes can't light up with DP (123.29 KB, text/plain)
2012-09-24 06:09 UTC, shui yangwei 		no flags Details
View All

Description shui yangwei 2012-09-11 09:30:16 UTC 
Created attachment 66960 [details]
ILK (e6510)  dp display dmesg

System Environment:
--------------------------
Platform: Ironlake
Kernel: (drm-intel-testing)c3c3d4e9c2daeca01c42040cda0e5e0579c5c80b
Some additional commit info:
Merge: e04190e 99d0b1d
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date:   Sun Sep 9 12:07:07 2012 +0200

Detail description:
--------------------------
ILK DP display modes below not able to light up:
CRTS(3):  1920x1200 60 1920 1968 2000 2080 1200 1203 1209 1235 0x9 0x48 154000
CRTS(3):  1600x1200 60 1600 1664 1856 2160 1200 1201 1204 1250 0x5 0x40 162000
CRTS(3):  1680x1050 60 1680 1784 1960 2240 1050 1053 1059 1089 0x6 0x40 146250
CRTS(3):  1440x900 75 1440 1536 1688 1936 900 903 909 942 0x6 0x40 136750
Comment 1 Daniel Vetter 2012-09-13 11:37:17 UTC 
Please test the patch at:

https://patchwork.kernel.org/patch/1446781/
Comment 2 shui yangwei 2012-09-17 08:39:41 UTC 
Kernel: (drm-intel-next-queued)a0db295dcd040cf842567bc0ede8e9c01330112a
Some additional commit info:
Author: Chris Wilson <chris@chris-wilson.co.uk>
Date:   Tue Sep 4 21:02:58 2012 +0100

This kernel contain patch /1446781/, and these mode succeed to display.
Comment 3 Daniel Vetter 2012-09-17 08:45:56 UTC 
Patch merged to -queued:

commit 5b2110f87bf7324e735680fb13bacec0a61cf358
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date:   Wed Sep 12 23:24:09 2012 +0200

    drm/i915: rip out early dp port write for gm45/ilk
Comment 4 shui yangwei 2012-09-17 08:51:00 UTC 
confirmed
Comment 5 shui yangwei 2012-09-24 06:06:29 UTC 
System Environment:
--------------------------
Platform:        ILK
Kernel: (drm-intel-testing)7ce7b92e4aec3af4fbc56ff6e87a8b55d2362ec1
Some additional commit info:
Merge: 853c70e b98b601
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date:   Thu Sep 20 15:20:38 2012 +0200

Detail description:
-------------------------
Modes below with DP, not able to light up.
 
CRTS(3):  1920x1200 60 1920 1968 2000 2080 1200 1203 1209 1235 0x9 0x48 154000
CRTS(3):  1920x1080 50 1920 2448 2492 2640 1080 1084 1089 1125 0x5 0x40 148500
CRTS(3):  1920x1080 60 1920 2008 2052 2200 1080 1084 1089 1125 0x5 0x40 148500
CRTS(3):  1920x1080i 50 1920 2448 2492 2640 1080 1084 1094 1125 0x15 0x40 74250
CRTS(3):  1920x1080i 60 1920 2008 2052 2200 1080 1084 1094 1125 0x15 0x40 74250
CRTS(3):  1600x1200 60 1600 1664 1856 2160 1200 1201 1204 1250 0x5 0x40 162000
CRTS(3):  1680x945 60 1680 1784 1960 2240 945 946 949 978 0x6 0x0 131481
Comment 6 shui yangwei 2012-09-24 06:09:14 UTC 
Created attachment 67607 [details]
dmesg of some display modes can't light up with DP

System Environment:
--------------------------
Platform:        ILK
Kernel: (drm-intel-testing)7ce7b92e4aec3af4fbc56ff6e87a8b55d2362ec1
Some additional commit info:
Merge: 853c70e b98b601
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date:   Thu Sep 20 15:20:38 2012 +0200

Detail description:
-------------------------
Modes below with DP, not able to light up.
 
CRTS(3):  1920x1200 60 1920 1968 2000 2080 1200 1203 1209 1235 0x9 0x48 154000
CRTS(3):  1920x1080 50 1920 2448 2492 2640 1080 1084 1089 1125 0x5 0x40 148500
CRTS(3):  1920x1080 60 1920 2008 2052 2200 1080 1084 1089 1125 0x5 0x40 148500
CRTS(3):  1920x1080i 50 1920 2448 2492 2640 1080 1084 1094 1125 0x15 0x40 74250
CRTS(3):  1920x1080i 60 1920 2008 2052 2200 1080 1084 1094 1125 0x15 0x40 74250
CRTS(3):  1600x1200 60 1600 1664 1856 2160 1200 1201 1204 1250 0x5 0x40 162000
CRTS(3):  1680x945 60 1680 1784 1960 2240 945 946 949 978 0x6 0x0 131481
Comment 7 Chris Wilson 2012-10-18 13:02:08 UTC 
Odd, looks like a bw calculation as only the higher bw modes are failing, though there does not seem to be any obvious causes.
Comment 8 shui yangwei 2012-10-29 06:45:07 UTC 
Kernel: (drm-intel-testing)b9960e75b5a348759c6e8c9ffb3f45e40ad702a5
Some additional commit info:
Merge: 8e740cd 1623392
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date:   Fri Oct 26 21:10:48 2012 +0200


Issue also exist on this kernel.
Comment 9 shui yangwei 2012-11-28 06:14:29 UTC 
Kernel: (drm-intel-testing)c8b0458435ec4740c9f542a706aebc0e75998211
Some additional commit info:
Merge: 70b12bb 9a30a61
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date:   Fri Nov 23 20:07:48 2012 +0100

Test with this kernel, the issue has gone.
Comment 10 Daniel Vetter 2012-11-28 07:46:14 UTC 
Hm, I have no idea why this is now fixed, but I'm happy to close the bug again.

Please reopen if this breaks again.
Comment 11 Elizabeth 2017-10-06 14:48:24 UTC 
Closing old verified.

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