[Bug 1896482] Re: acpi event detection crashes

[Devin Bayer]

I have had this same issue for at least a year. It's still an issue with
kernel 5.11.0. The following lines in the stack trace looks almost
identical:

[292156.350702] ACPI: EC: interrupt blocked
[292180.635315] [ cut here ]
[292180.635318] WARNING: CPU: 1 PID: 297907 at kernel/workqueue.c:1419 
__queue_work+0x2ce/0x340
[292180.635429] CPU: 1 PID: 297907 Comm: kworker/1:1 Tainted: P   O 
 5.11.0-17-
generic #18-Ubuntu
...
[292180.635431] Hardware name: LENOVO 20QDCTO1WW/20QDCTO1WW, BIOS N2HET58W 
(1.41 ) 10/27/2020
[292180.635432] Workqueue: kec_query acpi_ec_event_processor
[292180.635436] RIP: 0010:__queue_work+0x2ce/0x340
...
[292180.635450] Call Trace:
[292180.635454]  queue_work_on+0x3e/0x50
[292180.635455]  acpi_ec_submit_query+0x69/0xa0
[292180.635457]  advance_transaction+0x18b/0x4a0

Is there any workaround besides rebooting?

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Title:
  acpi event detection crashes

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[Bug 1859754] Re: add ucm to make alsa/sof driver work under PA (variants of Lenovo X1 Carbon 7th, Dell cnl and cml machines)

[Devin Bayer]

Hello. I am wondering why this only applies to certain models of the
X1C7. I had to make an additional file to get my Mic working:

 LENOVO-20QDCTO1WW-ThinkPadX1Carbon7th-20QDCTO1WW.conf

Is this something I should report upstream?

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https://bugs.launchpad.net/bugs/1859754

Title:
  add ucm to make alsa/sof driver work under PA (variants of Lenovo X1
  Carbon 7th, Dell cnl and cml machines)

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