Den 2021-07-27 kl. 20:06, skrev Ben Greear:

On 7/27/21 9:50 AM, pgndev wrote:

...

embedded. checking...

iiuc, it's got an i2c.  possible a uart is on Irq4 thru the i2c?

if so, might wanna take a look here:

https://bugzilla.kernel.org/show_bug.cgi?id=213031

https://urldefense.proofpoint.com/v2/url?u=https-3A__bugzilla.kernel.org_show-5Fbug.cgi-3Fid-3D213031&d=DwMFaQ&c=euGZstcaTDllvimEN8b7jXrwqOf-v5A_CdpgnVfiiMM&r=HYKqseB9xg-u2kz3egvegqfgyXnEBhQotXfR3iCfdgM&m=gCRilkIAaKYuJwLWOT7O5ttfWG5rta0-6eYjPBdnTz4&s=VSfJDrJPSqVtQuCoCZGazYrmnWTe6xldTkWT_Bq7vwo&e=

maybe related?  at least shares symptoms...

ACPI subsystem lead sez in offlist thread re: that

"It looks like commit 96b15a0b45182f1c3da5a861196da27000da2e3c needs to

be reverted."

I don't see that commit in linus tree nor my stable tree, can you check that hash and also show me the commit message and other info so I can track it down?

AFAIK, that commit is supposed to reference 0ec4e55e9f571f08970ed115ec0addc691eda613 in linus tree, landed in 5.13.2 ' and a matching thread: "boot of J1900 (quad-core Celeron) mobo: kernel <= 5.12.15, OK; kernel

= 5.12.17, 5.13.4, slow boot (>> 660 secs) + hang/FAIL"

on stable@ ml.

-- Thomas