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[207.161.177.131]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-39b08bcc090sm7824281a91.4.2026.09.03.17.24.13 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 03 Sep 2026 17:24:14 -0700 (PDT) Message-ID: Date: Thu, 3 Sep 2026 19:24:12 -0500 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Betterbird (Linux) Subject: Re: [BUG] SPD5118 Intermittent MR11 Corruption During Suspend/Resume To: Armin Wolf , Guenter Roeck Cc: linux-hwmon@vger.kernel.org, linux-kernel@vger.kernel.org, "Rafael J. Wysocki" , "linux-acpi@vger.kernel.org" References: <46191fa9-fa4a-4c16-b618-2c0c6dc09102@gmx.de> <531be24a-bad0-40f6-8e30-3d4da565afcb@gmail.com> <0388506d-9ddc-4825-bf28-95c8eef219b6@gmail.com> <57a05dea-3cce-4ecf-bbe1-ab7464f8c224@gmx.de> <474a37bb-0774-4710-8458-ea28d7c54c89@gmx.de> <7ca2e621-e0a1-4eee-bcd1-2ded610f1beb@gmail.com> <5480c69c-8e98-443e-96d7-30e64e886373@roeck-us.net> <02dc7eb6-6d0d-4c0c-af10-b831d3f8ba06@gmx.de> Content-Language: en-US From: Matthew Bettencourt In-Reply-To: <02dc7eb6-6d0d-4c0c-af10-b831d3f8ba06@gmx.de> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Hello Guenter, >> - Do you have the latest BIOS installed on your system ? >> Some statements online seem to suggest that the problem >> _may_ be fixed with the latest BIOS on at least some >> of the affected systems. Yup as of Sept 3 2026 I am running the latest BIOS, 4.43. I think a new one is coming soonish as Asrock has started rolling out 4.50 on other x870 motherboards >> - Please boot the affected system with "usbcore.autosuspend=-1" >> kernel command line parameter. >> There are some claims online that this might resolve the problem. >> I have no idea why that would be the case, but I guess it does >> not hurt trying. Of course, if that _does_ work, we have yet another >> mystery to solve. I think we have another mystery to solve. I enabled "usbcore.autosuspend=-1" as a boot parameter and the errors have cleared up when I suspend/resume. I doubled checked this by removing "usbcore.autosuspend=-1" from my boot parameters and the errors came back. >> - Do you have memory with RGB-anything in the affected system ? If so, >> is it controlled by the BIOS ? If yes, please disable the functionality >> if that is possible. I checked my BIOS and all RGB options are disabled. Thanks, Matthew On 9/3/26 5:47 PM, Armin Wolf wrote: > Am 03.09.26 um 23:05 schrieb Guenter Roeck: > >> Hi Matthew, >> >> On 9/3/26 11:25, Matthew Bettencourt wrote: >>> Hello Guenter, >>> >>>  > This system [MSI PRO B850M-A WIF/7600x3d] does _not_ have a >>> problem, or did I misunderstand the above ? >>> >>> That is correct. I was unable to replicate the issue with the MSI PRO >>> B850M-A WIF and 7600x3d. The MR11 registered never got corrupted >>> during sleep/resume and I never saw any piix4 errors logged when >>> using my piix4 driver with the additional logging enabled. >>> >>> I never swapped the CPUs as that was more hassle than I was willing >>> to do right now, but if it something that might be useful I can >>> probably try that at some point. >>> >> I don't think that would help. From all the reports I browsed through >> so far, the common denominator seems to be that the affected systems use >> a X870 or X870E chipset. >> >> Anyway, couple of ideas: >> >> - Do you have the latest BIOS installed on your system ? >>   Some statements online seem to suggest that the problem >>   _may_ be fixed with the latest BIOS on at least some >>   of the affected systems. >> >> - Please boot the affected system with "usbcore.autosuspend=-1" >>   kernel command line parameter. >>   There are some claims online that this might resolve the problem. >>   I have no idea why that would be the case, but I guess it does >>   not hurt trying. Of course, if that _does_ work, we have yet another >>   mystery to solve. >> >> - Do you have memory with RGB-anything in the affected system ? If so, >>   is it controlled by the BIOS ? If yes, please disable the functionality >>   if that is possible. >> >> Thanks, >> Guenter > > According to the output of /proc/ioports, the root issue seems to be > that the ACPI firmware > drives the SMBus controller and marks the affected IO ports as reserved, > but acpi_check_region() > still tells the driver that the IO ports are available. > > I already CCed the ACPI people to take a look at this. > > Thanks, > Armin Wolf >