[BUG] [v1.4.2] System hang when boot up with pulseaudio on one CFL laptop

[ClarexZhou]

Describe the bug
On one Nvidia GPUs laptop, system will hang when system boot up with pulseaduio enaBled.

Error seen with fw 1.4.2 but not see with latest master and 1.5-rc1 fw.

To Reproduce

1. Pulseaduio is enabled
2. Boot up system

Reproduction Rate
3/3

Expected behavior
Boot up system successfully

Impact
System hang during boot up.

Environment

1. Branch name and commit hash of the 2 repositories: sof (firmware/topology) and linux (kernel driver).
   • Kernel: Sof-dev 4b4681e
   • SOF: https://github.com/thesofproject/sof-bin/tree/stable-v1.4.2/lib/firmware/intel/sof/v1.4.2, commit 2ef369d5
2. Name of the topology file
   • Topology: sof-hda-generic-4ch.tplg
3. Name of the platform(s) on which the bug is observed.
   • Platform: CFL Laptop in HDA mode, selek G3 3590,

Can't get logs for system hang during boot up.

[ClarexZhou]

System also hang in below steps if disabled pulseaduio:

1. boot up system after disable pulseaudio
2. Change PGA in playback volume to max via alsamixer
3. 'aplay -Dhw:1,0 -f dat music.wac -vv -i', -> System hang. No error dmesg when system hang
   Error also can be reproduced without PGA change in step 2.

[lgirdwood]

@mengdonglin @fkaczmar @lbetlej I know that v1.5 is imminent, but v1.4.x is shipping with all the 20.04 Ubuntu/Redhat releases. If we are good with v1.5 on Ubuntu/ RH 20.04 then we can ship this as the fix rather than a new v1.4.3 release (as either way we the distros have to update FW).

[plbossart]

@mengdonglin @fkaczmar @lbetlej I know that v1.5 is imminent, but v1.4.x is shipping with all the 20.04 Ubuntu/Redhat releases. If we are good with v1.5 on Ubuntu/ RH 20.04 then we can ship this as the fix rather than a new v1.4.3 release (as either way we the distros have to update FW).

@lgirdwood unrelated topic but can we make sure all firmwares are generated for 1.5, I don't want to regenerate the baytrail/broadwell/apl/cml once as I did last time.

[mengdonglin]

@lrgirdwo @fkaczmar @jajanusz latest result shows this issue is very likely to be the system hang issue we previously fixed for customer.

[jajanusz]

I checked the source code of https://github.com/thesofproject/sof/tree/v1.4.2 and it does not have fix for hangs that was merged in this PR: #2326

[mengdonglin]

Thank you! @jajanusz Can this fix be applied to https://github.com/thesofproject/sof/tree/v1.4.2?

This fix was merged by master about 10 days later than 1.4.2 (Feb 21)

[jajanusz]

But 1.4.2 is not aligned with master from Feb 21, there are just cherr-picks from that date, so it needs more changes.
Anyway I'll make PR with backport for branch 1.4-stable.

[ClarexZhou]

Close for error is fixed on https://github.com/thesofproject/sof/commits/v1.4.3