View Issue Details

IDProjectCategoryView StatusLast Update
0001380T99X171.00 SKB EagleSW Issuepublic2021-12-24 09:21
Reporter(ALTech) Younkwang Jung Assigned To(ALTech) Younkwang Jung Due Date
PriorityhighSeveritys3-moderateReproducibilityhave not tried
Status closedResolutionfixed 
Summary0001380: [Smart3][BTF] HDMI signal out when HPD is low before sleep and wakeup
DescriptionHi Kerwin

This issue has been reported from skb.
https://jira.skbroadband.com/browse/BFXBTF-331

[ Test version ]
v15.531.18/19

[ issue information ]
Error occurs when STB wakes up while HPD to low.

[ reproduce step]
1. STB ON, TV ON
2. STB ON, TV power plug off (HPD low)
3, STB OFF, TV power plug off (HPD low)
4. STB ON(wake up)
    HPD high
5. TV power on

[ expect result ]
When the resolution is automatically set, it appears to be the highest resolution.

[ test result ]
It is set to 1280x720p resolution due to EDID error.
=============================================================================

As a result of my test, the cause of the issue seems to be caused by STB setting HPD to 1 unconditionally when STB waking up.
Please check the issue.

Thank you
YK.Jung
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Users monitoring this issue

User List (ALTech) JunGyu Kim , (ALTech) SY Yoon , (SW) Brent Choi

Activities

(SW) Jerry Lin

2021-11-02 09:22

developer   ~0008644

Hi YK.Jung ,
From the log , you can check the following message:
10-29 19:27:52.904 0 0 I [ 122.875497@0] hdmitx: edid: EDID BlockCount=0
10-29 19:27:52.904 0 0 I [ 122.875500@0] hdmitx: edid: set default vic <== here will set to 1280x720p
10-29 19:27:52.904 0 0 I [ 122.875506@0] hdmitx: edid: edid blk0 checksum:0 ext_flag:0
10-29 19:27:52.904 0 0 I [ 122.875513@0] hdmitx: edid: raw data are all zeroes
.
.
According to the design of SMART 3, when the EDID BlockCount is equal to 0,
it will be set as the default HDMI output, so the HDMI output will be set to 720P.

Jerry

(ALTech) Younkwang Jung

2021-11-02 10:43

developer   ~0008645

Hi Jerry

STB should not read the EDID in the above situation 4)
STB can't read edid properly because the TV can't operate

If the STB is set to auto, it should be set to the best resolution.

Thank you
YK.Jung

Issue History

Date Modified Username Field Change
2021-11-01 11:20 (ALTech) Younkwang Jung New Issue
2021-11-01 11:20 (ALTech) Younkwang Jung Status new => assigned
2021-11-01 11:20 (ALTech) Younkwang Jung Assigned To => (SW) Kerwin Chen
2021-11-01 11:20 (ALTech) Younkwang Jung Issue Monitored: (SW) Brent Choi
2021-11-01 11:20 (ALTech) Younkwang Jung Issue Monitored: (ALTech) JunGyu Kim
2021-11-01 11:21 (ALTech) Younkwang Jung Issue Monitored: (ALTech) SY Yoon
2021-11-01 15:05 (SW) Kerwin Chen Assigned To (SW) Kerwin Chen => (SW) Jerry Lin
2021-11-02 09:22 (SW) Jerry Lin Note Added: 0008644
2021-11-02 10:43 (ALTech) Younkwang Jung Note Added: 0008645
2021-12-20 18:36 (SW) Kerwin Chen Assigned To (SW) Jerry Lin => (ALTech) Younkwang Jung
2021-12-20 18:36 (SW) Kerwin Chen Status assigned => resolved
2021-12-20 18:36 (SW) Kerwin Chen Resolution open => fixed
2021-12-23 16:29 (SW) Jacky Chiang Severity s2-severe => s3-moderate
2021-12-24 09:21 (SW) Kerwin Chen Status resolved => closed