I do not know that there is anything necessary to do here. Per the discussion for that patch, the warning is just a warning and while it is probably elevated higher than it should be (the patch only seems to downgrade it to a DEBUG level message) it is innocuous.
The patch is landed in 6.13, for reference: commit 9474d586819940f00a98dd98015fe456f9b35452 Author: Coly Li <col...@suse.de> Date: Mon Oct 21 13:04:43 2024 +0800 cxl: downgrade a warning message to debug level in cxl_probe_component_regs() In cxl_probe_component_regs() the error message "Couldn't locate the CXL.cache and CXL.mem capability array header." is potentially a false positive error condition. Downgrade the message from error level to debug level by using dev_dbg() to print the message, and the end users won't worry about the message anymore. [djbw/iweiny: Fix up changelog] Reported-by: Kelvin Shieh <ksh...@lenovo.com> Signed-off-by: Coly Li <col...@suse.de> Cc: Dan Williams <dan.j.willi...@intel.com> Cc: Jonathan Cameron <jonathan.came...@huawei.com> Cc: Alison Schofield <alison.schofi...@intel.com> Reviewed-by: Dan Williams <dan.j.willi...@intel.com> Link: https://patch.msgid.link/20241021050443.318712-1-col...@suse.de Signed-off-by: Ira Weiny <ira.we...@intel.com> Signed-off-by: Dave Jiang <dave.ji...@intel.com> We will take a look at this, but it is not a very high prioirty and may not be accepted into the Ubuntu kernels. ** Changed in: linux (Ubuntu) Importance: Undecided => Low ** Changed in: linux (Ubuntu) Status: New => Confirmed ** Also affects: linux (Ubuntu Noble) Importance: Undecided Status: New ** Also affects: linux (Ubuntu Oracular) Importance: Undecided Status: New ** Changed in: linux (Ubuntu Noble) Importance: Undecided => Low ** Changed in: linux (Ubuntu Oracular) Importance: Undecided => Low ** Changed in: linux (Ubuntu Noble) Status: New => Confirmed ** Changed in: linux (Ubuntu Oracular) Status: New => Confirmed ** Also affects: linux (Ubuntu Plucky) Importance: Low Assignee: Philip Cox (philcox) Status: Confirmed -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2077061 Title: Ubuntu 24.04 showed CXL related complaining messages when CXL capable root port did not attach CXL device Status in linux package in Ubuntu: Confirmed Status in linux source package in Noble: Confirmed Status in linux source package in Oracular: Confirmed Status in linux source package in Plucky: Confirmed Bug description: Ubuntu 24.04 showed CXL related complaining messages (when CXL root port did not attach CXL device) such as below messages (refer to attached dmesg file): Couldn't locate the CXL.cache and CXL.mem capability array header. HDM decoder capability not found For more details, Please refer to the attached dmesg file How reproducible: 100% Steps to reproduce 1. Install Ubuntu 24.04 on a Lenovo server which is CXL enabled by Intel CPU and Lenovo UEFI, but there is no CXL device attached in this server. 2. Check the dmesg. 3. The above error messages are seen in the dmesg file. --- ProblemType: Bug AlsaDevices: total 0 crw-rw---- 1 root audio 116, 1 Aug 28 03:14 seq crw-rw---- 1 root audio 116, 33 Aug 28 03:14 timer AplayDevices: Error: [Errno 2] No such file or directory: 'aplay' ApportVersion: 2.28.1-0ubuntu3.1 Architecture: amd64 ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord' AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/timer', '/dev/snd/seq'] failed with exit code 1: CRDA: N/A CasperMD5CheckResult: pass DistroRelease: Ubuntu 24.04 InstallationDate: Installed on 2024-08-28 (0 days ago) InstallationMedia: Ubuntu-Server 24.04 LTS "Noble Numbat" - Release amd64 (20240423) IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig' MachineType: Lenovo ThinkSystem SR650 V4,Processor board,BHS,2U,Renesas Package: linux (not installed) PciMultimedia: ProcEnviron: LANG=en_US.UTF-8 PATH=(custom, no user) SHELL=/bin/bash TERM=xterm XDG_RUNTIME_DIR=<set> ProcFB: 0 astdrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-6.8.0-41-generic root=/dev/mapper/ubuntu--vg-ubuntu--lv ro ProcVersionSignature: Ubuntu 6.8.0-41.41-generic 6.8.12 RelatedPackageVersions: linux-restricted-modules-6.8.0-41-generic N/A linux-backports-modules-6.8.0-41-generic N/A linux-firmware 20240318.git3b128b60-0ubuntu2.2 RfKill: Error: [Errno 2] No such file or directory: 'rfkill' Tags: noble Uname: Linux 6.8.0-41-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: N/A _MarkForUpload: True dmi.bios.date: 08/26/2024 dmi.bios.release: 0.60 dmi.bios.vendor: Lenovo dmi.bios.version: IHE105M-0.60 dmi.board.name: SB27B70050 dmi.board.vendor: Lenovo dmi.board.version: 2 dmi.chassis.type: 23 dmi.chassis.vendor: Lenovo dmi.chassis.version: None dmi.ec.firmware.release: 0.46 dmi.modalias: dmi:bvnLenovo:bvrIHE105M-0.60:bd08/26/2024:br0.60:efr0.46:svnLenovo:pnThinkSystemSR650V4,Processorboard,BHS,2U,Renesas:pvr2:rvnLenovo:rnSB27B70050:rvr2:cvnLenovo:ct23:cvrNone:sku7DGCCTO2WW: dmi.product.family: ThinkSystem dmi.product.name: ThinkSystem SR650 V4,Processor board,BHS,2U,Renesas dmi.product.sku: 7DGCCTO2WW dmi.product.version: 2 dmi.sys.vendor: Lenovo To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2077061/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp