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[BUG][JSL][DP-MST]Cannot playback to 2 DP displays connected through a DP-MST hub simultaneously #2239
Description
Describe the bug
Both the monitors connected show display but can not play audio at the same time when check 2 DP playback in MST mode
To Reproduce
1.Two monitors are connected via one DP hub using DP-DP cables
2."sudo reboot" to reboot sysytem
3."amixer contents |less" to check jack status(0,3 and 0,4 are on)
4.aplay -Dhw:0,4 -r 48000 -c 2 -fs16_le wav/2.wav wav/2.wav wav/2.wav -vv -i
5.open another terminal to "aplay -Dhw:0,3 -r 48000 -c 2 -fs16_le wav/2.wav wav/2.wav wav/2.wav -vv -i"
Reproduce rate
5/5
Expected result
the monitors connected can play video and has sound output
Actual result
Test recipe
Kernel:https://github.com/thesofproject/linux/commits/topic/sof-dev commit: 1b2f260 +PR #2208 +PR #2184
FW: https://github.com/thesofproject/sof/tree/releases/jsl/v3.0-rc1(commit: 3d8a0ac)
+PR #thesofproject/sof#3053
+PR # thesofproject/sof#2987
Tplg: sof-hda-generic-4ch.tplg
Platform:JSL-RVP with ALC700 in HDA mode
Activity
Liviali155 commentedon Jun 29, 2020
When check check DP playback in dasiy chain mode also has this issue, both the display can not play audio at the same time
[-][BUG][JSL][HDA]Both the monitors connected show display but can not play audio at the same time when check 2 DP playback in MST mode[/-][+][BUG][JSL][DP-MST]Cannot playback to 2 DP displays connected through a DP-MST hub simultaneously[/+]Liviali155 commentedon Jun 30, 2020
Reboot then connected two monitors via one DP hub using DP-DP cables,also has this issue when playback via 2 DP displays
dmesg062900.log
Liviali155 commentedon Jun 30, 2020
After applied #2240
Error not seen when check DP playback in dasiy chain mode and 2 DP playback in MST mode
kv2019i commentedon Jul 1, 2020
Thanks @Liviali155 ! So it seems this is fixed by #2240 as well.
ClarexZhou commentedon Jul 8, 2020
close for PR #2240 is merged.