Log is spammed with "correctable" PCIe bus errors

Ask Fedora
1

Hello - new laptop here and I’m trying to dual boot with Linux (been running Tumbleweed on my old daily driver for 2 years). I couldn’t get Tumbleweed working properly on the 2025 Zephyrus G16, and I noticed on asus-linux.org that it said Fedora was the recommended distro so… Here I am :slight_smile:

Fresh install of Fedora 42 and I was getting these errors. My setup is I kept the Windows NVMe unaltered and turned off Secure Boot and installed Fedora on the 2nd NVMe. I am using drive encryption if that matters. I’ve installed the rog-cachy kernel and that hasn’t fixed it either. it appears related to the card reader and is mostly transparent other than I can’t really view my logs realtime or otherwise because these overwhelm other perhaps more pressing issues.

Does anyone have any ideas how I can fix? I am not a linux newbie, but neither am I an expert so maybe if you say " have you checked this " throw out the command to help me get there. I may know it, but I am just an amateur hobbyist with this stuff!

Here is the typical dmesg errors I’m seeing (by the thousands or more since I can’t see how far back they go, they do stop after 31822.xxxxx seconds it appears):

[31822.069632] pcieport 0000:00:1c.0: AER: Correctable error message received from 0000:2c:00.0
[31822.069651] rtsx_pci 0000:2c:00.0: PCIe Bus Error: severity=Correctable, type=Data Link Layer, (Transmitter ID)
[31822.069657] rtsx_pci 0000:2c:00.0:   device [10ec:525a] error status/mask=00001000/00006000
[31822.069659] rtsx_pci 0000:2c:00.0:    [12] Timeout

Those are by the thousands, then I get a bunch of these:

[31822.071801] pcieport 0000:00:1c.0: AER: Correctable error message received from 0000:2c:00.0
[31822.072663] pcieport 0000:00:1c.0: AER: Correctable error message received from 0000:2c:00.0
[31822.073529] pcieport 0000:00:1c.0: AER: Correctable error message received from 0000:2c:00.0

It is so many that when I scroll back I cannot scroll to the beginning. I also notice when I try to shut down the terminal screen flashes similar correctable error messages.

here is the info on the hardware:

root@fedora:/home/jbeck# lspci -vv -s 0000:2c:00.0
0000:2c:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS525A PCI Express Card Reader (rev 01)
        Subsystem: ASUSTeK Computer Inc. Device 202f
        Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
        Latency: 0, Cache Line Size: 64 bytes
        Interrupt: pin A routed to IRQ 161
        IOMMU group: 19
        Region 1: Memory at 8d000000 (32-bit, non-prefetchable) [size=4K]
        Capabilities: [80] Power Management version 3
                Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=375mA PME(D0-,D1+,D2+,D3hot+,D3cold+)
                Status: D3 NoSoftRst- PME-Enable+ DSel=0 DScale=0 PME-
        Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit+
                Address: 00000000fee00718  Data: 0000
        Capabilities: [b0] Express (v2) Endpoint, IntMsgNum 0
                DevCap: MaxPayload 512 bytes, PhantFunc 0, Latency L0s unlimited, L1 unlimited
                        ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset- SlotPowerLimit 10W TEE-IO-
                DevCtl: CorrErr+ NonFatalErr+ FatalErr+ UnsupReq+
                        RlxdOrd+ ExtTag- PhantFunc- AuxPwr- NoSnoop-
                        MaxPayload 128 bytes, MaxReadReq 512 bytes
                DevSta: CorrErr- NonFatalErr- FatalErr- UnsupReq- AuxPwr+ TransPend-
                LnkCap: Port #0, Speed 5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s unlimited, L1 <64us
                        ClockPM+ Surprise- LLActRep- BwNot- ASPMOptComp+
                LnkCtl: ASPM L0s L1 Enabled; RCB 64 bytes, LnkDisable- CommClk+
                        ExtSynch- ClockPM+ AutWidDis- BWInt- AutBWInt- FltModeDis-
                LnkSta: Speed 5GT/s, Width x1
                        TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
                DevCap2: Completion Timeout: Not Supported, TimeoutDis+ NROPrPrP- LTR+
                         10BitTagComp- 10BitTagReq- OBFF Via message/WAKE#, ExtFmt- EETLPPrefix-
                         EmergencyPowerReduction Not Supported, EmergencyPowerReductionInit-
                         FRS- TPHComp- ExtTPHComp-
                         AtomicOpsCap: 32bit- 64bit- 128bitCAS-
                DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-
                         AtomicOpsCtl: ReqEn-
                         IDOReq- IDOCompl- LTR+ EmergencyPowerReductionReq-
                         10BitTagReq- OBFF Disabled, EETLPPrefixBlk-
                LnkCap2: Supported Link Speeds: 2.5-5GT/s, Crosslink- Retimer- 2Retimers- DRS-
                LnkCtl2: Target Link Speed: 5GT/s, EnterCompliance- SpeedDis-
                         Transmit Margin: Normal Operating Range, EnterModifiedCompliance- ComplianceSOS-
                         Compliance Preset/De-emphasis: -6dB de-emphasis, 0dB preshoot
                LnkSta2: Current De-emphasis Level: -6dB, EqualizationComplete- EqualizationPhase1-
                         EqualizationPhase2- EqualizationPhase3- LinkEqualizationRequest-
                         Retimer- 2Retimers- CrosslinkRes: unsupported, FltMode-
        Capabilities: [100 v2] Advanced Error Reporting
                UESta:  DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP-
                        ECRC- UnsupReq- ACSViol- UncorrIntErr- BlockedTLP- AtomicOpBlocked- TLPBlockedErr-
                        PoisonTLPBlocked- DMWrReqBlocked- IDECheck- MisIDETLP- PCRC_CHECK- TLPXlatBlocked-
                UEMsk:  DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP-
                        ECRC- UnsupReq- ACSViol- UncorrIntErr+ BlockedTLP- AtomicOpBlocked- TLPBlockedErr-
                        PoisonTLPBlocked- DMWrReqBlocked- IDECheck- MisIDETLP- PCRC_CHECK- TLPXlatBlocked-
                UESvrt: DLP+ SDES+ TLP- FCP+ CmpltTO- CmpltAbrt- UnxCmplt- RxOF+ MalfTLP+
                        ECRC- UnsupReq- ACSViol- UncorrIntErr+ BlockedTLP- AtomicOpBlocked- TLPBlockedErr-
                        PoisonTLPBlocked- DMWrReqBlocked- IDECheck- MisIDETLP- PCRC_CHECK- TLPXlatBlocked-
                CESta:  RxErr- BadTLP- BadDLLP- Rollover- Timeout- AdvNonFatalErr- CorrIntErr- HeaderOF-
                CEMsk:  RxErr- BadTLP- BadDLLP- Rollover- Timeout- AdvNonFatalErr+ CorrIntErr+ HeaderOF-
                AERCap: First Error Pointer: 00, ECRCGenCap+ ECRCGenEn- ECRCChkCap+ ECRCChkEn-
                        MultHdrRecCap- MultHdrRecEn- TLPPfxPres- HdrLogCap-
                HeaderLog: 00000000 00000000 00000000 00000000
        Capabilities: [148 v1] Device Serial Number 00-00-00-01-00-4c-e0-00
        Capabilities: [158 v1] Latency Tolerance Reporting
                Max snoop latency: 15728640ns
                Max no snoop latency: 15728640ns
        Capabilities: [160 v1] L1 PM Substates
                L1SubCap: PCI-PM_L1.2+ PCI-PM_L1.1+ ASPM_L1.2+ ASPM_L1.1+ L1_PM_Substates+
                          PortCommonModeRestoreTime=60us PortTPowerOnTime=60us
                L1SubCtl1: PCI-PM_L1.2+ PCI-PM_L1.1+ ASPM_L1.2+ ASPM_L1.1+
                           T_CommonMode=0us LTR1.2_Threshold=126976ns
                L1SubCtl2: T_PwrOn=60us
        Kernel driver in use: rtsx_pci
        Kernel modules: rtsx_pci
2

That first listing with the device id shows this as one of many links to a search for linux driver 10ec:525a

image
image707×135 15.4 KB

It would appear that your system contains a realtek card reader and the driver is not being loaded for it properly (or that without a card inserted and readable it is giving the errors).

3

Yes I’ve ran the linux-hardware hw-probe and gone through as much as I can with what I know. I’ve found several search results of the RTS525A having issues, but also some post showing some Dell models with this adapter that have “Full” compatibility on Ubuntu 20.04 (Ubuntu certified component: Dell RTS525A PCI Express Card Reader | Ubuntu). What I don’t know is whether all RTS525A adapters the same?

Alternatively, I’d like to just silence the logs.

4

There’s not a lot to fix here. The message basically said that there are PCIe link issues but they have been automatically corrected.

You can disable the error reports by adding pci=noaer to your kernel cmdline. That can be done with:

sudo grubby --update-kernel=ALL --args='pci=noaer'

Though do note that this would disable all PCIe error reporting. Assuming that the issue occurs in stock Fedora kernel, you should consider opening an issue on RHBZ. It might just be a hardware quirk that has to be accounted for.

Also, make sure your system firmware is up-to-date. A lot of PCIe issues can be solved that way.

1 Like
5

I edited your command to insert the normally required quotes around the actual kernel argument. (single or double quotes acceptable)