See kernel-log-sandisk-inserted-after-pooweron.txt with the usb- storage.quirks=0781:55a9:u kernel argument (that matches a SanDisk USB 3.2 thumb drive). I can't see any activity in the kernel log when I plugged in that thumb drive.
Then I powercycled the MacBook Pro with the SanDisk drive left in the slot; when the computer booted the drive showed up as expected. See the attached kernel-log-sandisk-inserted-after-poweron.txt file for that log; note that the quirks command line wasn't required. Unplugging the SanDisk drive and re-connecting it fails, again without any kernel messages at all. I also tried another USB 3 thumb drive without result. ** Attachment added: "kernel-log-sandisk-inserted-at-poweron.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2115512/+attachment/5888053/+files/kernel-log-sandisk-inserted-at-poweron.txt -- 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/2115512 Title: MacBook Pro USB 3.0 Devices Unrecognized Status in linux package in Ubuntu: Incomplete Bug description: If my MacBook Pro boots with a USB 3.0/3.2 device (e.g., thumb drive) connected, then those devices are recognized. But if the thumb drive is not connected when the computer boots then the Linux kernel doesn't see it or access it. This holds true whether the thumb drive is directly connected to a USB-C port or via a USB 3.0 USB hub. If the thumb drive is connected to a non-USB 3.0 port on the USB hub, then it is seen and recognized and operates correctly (albeit more slowly). ProblemType: Bug DistroRelease: Ubuntu 25.04 Package: linux-image-6.14.0-24-generic 6.14.0-24.24 ProcVersionSignature: Ubuntu 6.14.0-24.24-generic 6.14.6 Uname: Linux 6.14.0-24-generic x86_64 ApportVersion: 2.32.0-0ubuntu5.2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: bill 2275 F.... wireplumber /dev/snd/seq: bill 2270 F.... pipewire CasperMD5CheckResult: pass CurrentDesktop: ubuntu:GNOME Date: Fri Jun 27 08:02:03 2025 InstallationDate: Installed on 2025-03-17 (102 days ago) InstallationMedia: Ubuntu 24.04.1 LTS "Noble Numbat" - Release amd64 (20240827.1) MachineType: Apple Inc. MacBookPro14,1 ProcEnviron: LANG=en_US.UTF-8 PATH=(custom, no user) SHELL=/bin/bash TERM=xterm-256color XDG_RUNTIME_DIR=<set> ProcFB: 0 i915drmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.14.0-24-generic root=UUID=4e84a7fa-65d0-4d81-933b-3edfdbbb5285 ro crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M RelatedPackageVersions: linux-restricted-modules-6.14.0-24-generic N/A linux-backports-modules-6.14.0-24-generic N/A linux-firmware 20250317.git1d4c88ee-0ubuntu1.2 SourcePackage: linux UpgradeStatus: Upgraded to plucky on 2025-05-30 (28 days ago) dmi.bios.date: 06/16/2020 dmi.bios.release: 0.1 dmi.bios.vendor: Apple Inc. dmi.bios.version: 428.0.0.0.0 dmi.board.name: Mac-B4831CEBD52A0C4C dmi.board.vendor: Apple Inc. dmi.board.version: MacBookPro14,1 dmi.chassis.type: 9 dmi.chassis.vendor: Apple Inc. dmi.chassis.version: Mac-B4831CEBD52A0C4C dmi.modalias: dmi:bvnAppleInc.:bvr428.0.0.0.0:bd06/16/2020:br0.1:svnAppleInc.:pnMacBookPro14,1:pvr1.0:rvnAppleInc.:rnMac-B4831CEBD52A0C4C:rvrMacBookPro14,1:cvnAppleInc.:ct9:cvrMac-B4831CEBD52A0C4C:sku: dmi.product.family: MacBook Pro dmi.product.name: MacBookPro14,1 dmi.product.version: 1.0 dmi.sys.vendor: Apple Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2115512/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
