I bisected to same suspect acpi commit, though it is in 5.13.1, not 5.13.2.

commit bf155b2eaab40e7d9862ce89ffe2b8a80f86703b (HEAD -> master, refs/patches/master/acpi-resources-add-checks-for) Author: Hui Wang hui.wang@canonical.com Date: Wed Jun 9 10:14:42 2021 +0800

ACPI: resources: Add checks for ACPI IRQ override

[ Upstream commit 0ec4e55e9f571f08970ed115ec0addc691eda613 ]

The laptop keyboard doesn't work on many MEDION notebooks, but the keyboard works well under Windows and Unix. ...

Thanks, Ben

On 7/27/21 10:11 AM, pgndev wrote:

https://lore.kernel.org/regressions/3491db05-3bb4-a2c9-2350-881a77734070@gma... https://urldefense.proofpoint.com/v2/url?u=https-3A__lore.kernel.org_regressions_3491db05-2D3bb4-2Da2c9-2D2350-2D881a77734070-40gmail.com_&d=DwMFaQ&c=euGZstcaTDllvimEN8b7jXrwqOf-v5A_CdpgnVfiiMM&r=HYKqseB9xg-u2kz3egvegqfgyXnEBhQotXfR3iCfdgM&m=m6VJWo5K-8IUBgIaUajtEduR0T8ibHTet6JPL0UgNe4&s=fNVbxFG4v5p_9mhPxGZGgAP4wRKzfiS3vod8SxBw6Dg&e=

On Tue, Jul 27, 2021, 1:06 PM Ben Greear <greearb@candelatech.com mailto:greearb@candelatech.com> wrote:

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=m6VJWo5K-8IUBgIaUajtEduR0T8ibHTet6JPL0UgNe4&s=3nSHI1S9N0Ma6h-6sL6W2bRjDD49EHbQ7rwW4N_p09o&e=>
 >       
  <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?

Thanks,
Ben


-- 
Ben Greear <greearb@candelatech.com <mailto:greearb@candelatech.com>>
Candela Technologies Inc http://www.candelatech.com