Re: [BUG] SPD5118 Intermittent MR11 Corruption During Suspend/Resume

[Guenter Roeck <linux@roeck-us.net>]

Hi Matthew,

On 9/2/26 07:00, Matthew Bettencourt wrote:
> Hello Guenter,
> 
>  > It would be something like
>  >
>  > sudo acpidump > acpi.log
>  > acpixtract acpi.log
>  > iasl -d *.dat
>  >
>  > You'll get a number of.dsl files with cryptic assembler-style
>  > code and data. Then the digging starts ... you may find something
>  > like "Name (SMB0, 0x0B00)" in dsdt.dsl. Then we can only hope to
>  > figure out if ACPI actually accesses it.
> 
> That wasn't as hard as I thought. I got everything decoding I guess, I just did a grep on all the dsl files for SMB.
> 
> $ grep -i -rn "SMB" *.dsl

That matches almost exactly the dsdt files on my main system (MSI MAG B650M
MORTAR WIFI with 9900X). Either I have the same problem (I don't usually
suspend) or we'll have to find something else to blame. I do see different
devices on the same bus, though.

      0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
00:                         -- -- -- -- -- -- -- --
10: -- -- -- -- -- 15 -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
40: -- -- -- -- -- -- -- -- 48 49 4a 4b -- -- -- 4f
50: UU UU UU UU -- -- -- -- -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: -- -- -- -- -- -- -- --

[spd5118 is loaded, which explains the UU, and the system has
4 DIMMs]

Compared to yours:

      0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
00:                         -- -- -- -- -- -- -- --
10: -- -- -- -- -- 15 -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
40: -- -- -- -- -- -- -- -- -- 49 -- 4b -- -- -- --
50: -- 51 -- 53 -- -- -- -- -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: -- 71 -- 73 -- -- --

That does make me wonder what you have on 0x71 and 0x73,
because those are often I2C bus multiplexers. That could mess
up everything if some entity selects a different bus.

Guenter