Bug 55276 - [SNB regression]some dp display modes can't light up
Summary: [SNB regression]some dp display modes can't light up
Status: CLOSED FIXED
Alias: None
Product: DRI
Classification: Unclassified
Component: DRM/Intel (show other bugs)
Version: unspecified
Hardware: Other All
: high normal
Assignee: Daniel Vetter
QA Contact:
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2012-09-24 08:07 UTC by shui yangwei
Modified: 2017-10-06 14:48 UTC (History)
6 users (show)

See Also:
i915 platform:
i915 features:


Attachments
dp display modes can't light up dmesg (44.77 KB, text/plain)
2012-09-24 08:07 UTC, shui yangwei
no flags Details
dmesg info after booting with drm.debug=0xe (77.68 KB, text/plain)
2012-09-25 01:52 UTC, shui yangwei
no flags Details
xrandr info (9.34 KB, text/plain)
2012-09-25 01:52 UTC, shui yangwei
no flags Details
DP xrandr info (11.60 KB, text/plain)
2012-09-26 01:55 UTC, shui yangwei
no flags Details
some mode can't display correctly dmesg (123.32 KB, text/plain)
2012-10-15 05:24 UTC, shui yangwei
no flags Details
xrandr info (11.61 KB, text/plain)
2012-10-15 05:25 UTC, shui yangwei
no flags Details

Description shui yangwei 2012-09-24 08:07:28 UTC
Created attachment 67613 [details]
dp display modes can't light up dmesg

System Environment:
--------------------------
Platform:       sugarbay
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:
-------------------------
some dp modes below can't light up.


CRTS(3):  1600x1200 60 1600 1664 1856 2160 1200 1201 1204 1250 0x5 0x40 162000
CRTS(3):  1280x720 50 1280 1720 1760 1980 720 725 730 750 0x5 0x40 74250
CRTS(3):  800x600 72 800 856 976 1040 600 637 643 666 0x5 0x40 50000
CRTS(3):  800x600 60 800 840 968 1056 600 601 605 628 0x5 0x40 40000
CRTS(3):  800x600 56 800 824 896 1024 600 601 603 625 0x5 0x40 36000
CRTS(3):  720x576 50 720 732 796 864 576 581 586 625 0xa 0x40 27000
CRTS(3):  848x480 60 848 864 976 1088 480 486 494 517 0x5 0x40 33750
CRTS(3):  720x480 60 720 736 798 858 480 489 495 525 0xa 0x40 27000
Comment 1 Daniel Vetter 2012-09-24 12:16:45 UTC
Again, working sha1 missing. Also, dmesg with drm.debug (only boot-up, so that we know about the hw) missing. And please attach xrandr --verbose output, thanks.
Comment 2 shui yangwei 2012-09-25 01:52:04 UTC
Created attachment 67657 [details]
dmesg info after booting with drm.debug=0xe

(In reply to comment #1)
> Again, working sha1 missing. Also, dmesg with drm.debug (only boot-up, so
> that we know about the hw) missing. And please attach xrandr --verbose
> output, thanks.
I check the git commit with log,the kernel which I test is the latest version.
I attach the dmesg after booting with drm.debug=0xe.
Comment 3 shui yangwei 2012-09-25 01:52:40 UTC
Created attachment 67658 [details]
xrandr info

Here is the xrander --verbose output
Comment 4 shui yangwei 2012-09-25 02:20:30 UTC
This kernel is a good commit last time tested:

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
Comment 5 Daniel Vetter 2012-09-25 09:11:19 UTC
Hm, xrandr only shows HDMI3 connected, no DP port connected. Is this from the same machine/setup?
Comment 6 Daniel Vetter 2012-09-25 09:13:46 UTC
I've also looked at the relevant commits between good and bad sha1 and nothing popped out that could explain this. Can you please try to bisect this issue?
Comment 7 shui yangwei 2012-09-26 01:55:41 UTC
Created attachment 67701 [details]
DP xrandr info

xrandr --verbose log with DP.

Very sorry, I forget to plug DP in it.
Comment 8 shui yangwei 2012-10-15 05:24:36 UTC
Created attachment 68566 [details]
some mode can't display correctly dmesg

Environment Description:
--------------------------------
Platform:       sugarbay
Kernel: (drm-intel-testing)6760818aad5622d7f20d7f1c45d75a8165aeaf24
Some additional commit info:
Merge: 39bc66c be3cd5e
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date:   Fri Oct 12 12:24:12 2012 +0200

Description:
--------------------------------
some mode can't display correctly:

this mode flickered heavily: 
CRTS(3):[5]  1920x1080i 60 1920 2008 2052 2200 1080 1084 1094 1125 0x15 0x40 74250

this mode screen is black:  
CRTS(3):[20]  1152x864 75 1152 1216 1344 1600 864 865 868 900 0x5 0x40 108000

modes below can't light up:
CRTS(3):[24]  1280x720 60 1280 1390 1430 1650 720 725 730 750 0x5 0x40 74250
CRTS(3):[30]  800x600 75 800 816 896 1056 600 601 604 625 0x5 0x40 49500
CRTS(3):[30]  800x600 75 800 816 896 1056 600 601 604 625 0x5 0x40 49500
CRTS(3):[31]  800x600 60 800 840 968 1056 600 601 605 628 0x5 0x40 40000
CRTS(3):[35]  720x480 60 720 736 798 858 480 489 495 525 0xa 0x40 27000
CRTS(3):[37]  640x480 75 640 656 720 840 480 481 484 500 0xa 0x40 31500
CRTS(3):[39]  640x480 60 640 656 752 800 480 490 492 525 0xa 0x40 25175
Comment 9 shui yangwei 2012-10-15 05:25:11 UTC
Created attachment 68567 [details]
xrandr info
Comment 10 shui yangwei 2012-10-17 08:19:57 UTC
Test with:
Kernel: (drm-intel-testing)6760818aad5622d7f20d7f1c45d75a8165aeaf24


below modes also can't light up:
CRTS(3):[0]  1920x1200 60 1920 1968 2000 2080 1200 1203 1209 1235 0x9 0x48 154000
CRTS(3):[1]  1920x1080 50 1920 2448 2492 2640 1080 1084 1089 1125 0x5 0x40 148500
CRTS(3):[2]  1920x1080 60 1920 2008 2052 2200 1080 1084 1089 1125 0x5 0x40 148500
CRTS(3):[3]  1920x1080 24 1920 2558 2602 2750 1080 1084 1089 1125 0x5 0x40 74250
CRTS(3):[4]  1920x1080i 50 1920 2448 2492 2640 1080 1084 1094 1125 0x15 0x40 74250
CRTS(3):[5]  1920x1080i 60 1920 2008 2052 2200 1080 1084 1094 1125 0x15 0x40 74250
CRTS(3):[6]  1600x1200 60 1600 1664 1856 2160 1200 1201 1204 1250 0x5 0x40 162000
CRTS(3):[7]  1680x1050 60 1680 1784 1960 2240 1050 1053 1059 1089 0x6 0x40 146250
CRTS(3):[8]  1680x945 60 1680 1784 1960 2240 945 946 949 978 0x6 0x0 131481
CRTS(3):[9]  1400x1050 60 1400 1488 1632 1864 1050 1053 1057 1089 0x6 0x40 121750
CRTS(3):[10]  1600x900 60 1600 1696 1864 2128 900 901 904 932 0x6 0x0 118963
CRTS(3):[11]  1280x1024 75 1280 1296 1440 1688 1024 1025 1028 1066 0x5 0x40 135000
CRTS(3):[12]  1280x1024 60 1280 1328 1440 1688 1024 1025 1028 1066 0x5 0x40 108000
CRTS(3):[13]  1440x900 75 1440 1536 1688 1936 900 903 909 942 0x6 0x40 136750
Comment 11 shui yangwei 2012-10-29 03:32:29 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



Test with this kernel, issue resolved.
Comment 12 Elizabeth 2017-10-06 14:48:13 UTC
Closing old verified.


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