Troubleshooting • USB ports on Raspberry Pi 4b stop functioning suddenly

Code:

dst-pi@raspberrypi:~ $ dmesg | grep -i usb[    0.054317] usbcore: registered new interface driver usbfs[    0.054334] usbcore: registered new interface driver hub[    0.054351] usbcore: registered new device driver usb[    1.051910] usbcore: registered new interface driver lan78xx[    1.051934] usbcore: registered new interface driver smsc95xx[    1.143607] xhci_hcd 0000:01:00.0: new USB bus registered, assigned bus number 1[    1.144992] xhci_hcd 0000:01:00.0: new USB bus registered, assigned bus number 2[    1.145000] xhci_hcd 0000:01:00.0: Host supports USB 3.0 SuperSpeed[    1.145117] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 6.12[    1.145124] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1[    1.145128] usb usb1: Product: xHCI Host Controller[    1.145131] usb usb1: Manufacturer: Linux 6.12.34+rpt-rpi-v8 xhci-hcd[    1.145134] usb usb1: SerialNumber: 0000:01:00.0[    1.145401] hub 1-0:1.0: USB hub found[    1.145628] usb usb2: New USB device found, idVendor=1d6b, idProduct=0003, bcdDevice= 6.12[    1.145634] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1[    1.145638] usb usb2: Product: xHCI Host Controller[    1.145641] usb usb2: Manufacturer: Linux 6.12.34+rpt-rpi-v8 xhci-hcd[    1.145644] usb usb2: SerialNumber: 0000:01:00.0[    1.145818] hub 2-0:1.0: USB hub found[    1.146800] usbcore: registered new interface driver uas[    1.146829] usbcore: registered new interface driver usb-storage[    1.148816] usbcore: registered new interface driver usbhid[    1.148820] usbhid: USB HID core driver[    1.395429] usb 1-1: new high-speed USB device number 2 using xhci_hcd[    1.534113] usb 1-1: New USB device found, idVendor=2109, idProduct=3431, bcdDevice= 4.21[    1.534134] usb 1-1: New USB device strings: Mfr=0, Product=1, SerialNumber=0[    1.534139] usb 1-1: Product: USB2.0 Hub[    1.545133] hub 1-1:1.0: USB hub found[    1.831367] usb 1-1.4: new high-speed USB device number 3 using xhci_hcd[    1.919777] usb 1-1.4: New USB device found, idVendor=1a40, idProduct=0101, bcdDevice= 1.11[    1.919793] usb 1-1.4: New USB device strings: Mfr=0, Product=1, SerialNumber=0[    1.919798] usb 1-1.4: Product: USB 2.0 Hub[    1.921816] hub 1-1.4:1.0: USB hub found[    2.315372] usb 1-1.4.3: new low-speed USB device number 4 using xhci_hcd[    2.527685] usb 1-1.4.3: New USB device found, idVendor=046d, idProduct=c31d, bcdDevice=66.01[    2.527704] usb 1-1.4.3: New USB device strings: Mfr=1, Product=2, SerialNumber=0[    2.527709] usb 1-1.4.3: Product: USB Keyboard[    2.527713] usb 1-1.4.3: Manufacturer: Logitech[    2.537584] input: Logitech USB Keyboard as /devices/platform/scb/fd500000.pcie/pci0000:00/0000:00:00.0/0000:01:00.0/usb1/1-1/1-1.4/1-1.4.3/1-1.4.3:1.0/0003:046D:C31D.0001/input/input0[    2.711533] hid-generic 0003:046D:C31D.0001: input,hidraw0: USB HID v1.10 Keyboard [Logitech USB Keyboard] on usb-0000:01:00.0-1.4.3/input0[    2.722138] input: Logitech USB Keyboard Consumer Control as /devices/platform/scb/fd500000.pcie/pci0000:00/0000:00:00.0/0000:01:00.0/usb1/1-1/1-1.4/1-1.4.3/1-1.4.3:1.1/0003:046D:C31D.0002/input/input1[    2.775596] input: Logitech USB Keyboard System Control as /devices/platform/scb/fd500000.pcie/pci0000:00/0000:00:00.0/0000:01:00.0/usb1/1-1/1-1.4/1-1.4.3/1-1.4.3:1.1/0003:046D:C31D.0002/input/input2[    2.775737] hid-generic 0003:046D:C31D.0002: input,hidraw1: USB HID v1.10 Device [Logitech USB Keyboard] on usb-0000:01:00.0-1.4.3/input1[    2.963407] usb 1-1.4.4: new full-speed USB device number 5 using xhci_hcd[    3.175775] usb 1-1.4.4: New USB device found, idVendor=413c, idProduct=301b, bcdDevice=11.23[    3.175793] usb 1-1.4.4: New USB device strings: Mfr=1, Product=2, SerialNumber=0[    3.175798] usb 1-1.4.4: Product: Dell Universal Receiver[    3.175802] usb 1-1.4.4: Manufacturer: Dell[    3.185162] input: Dell Dell Universal Receiver as /devices/platform/scb/fd500000.pcie/pci0000:00/0000:00:00.0/0000:01:00.0/usb1/1-1/1-1.4/1-1.4.4/1-1.4.4:1.0/0003:413C:301B.0003/input/input3[    3.311587] hid-generic 0003:413C:301B.0003: input,hidraw2: USB HID v1.11 Keyboard [Dell Dell Universal Receiver] on usb-0000:01:00.0-1.4.4/input0[    3.317425] input: Dell Dell Universal Receiver Mouse as /devices/platform/scb/fd500000.pcie/pci0000:00/0000:00:00.0/0000:01:00.0/usb1/1-1/1-1.4/1-1.4.4/1-1.4.4:1.1/0003:413C:301B.0004/input/input4[    3.317716] input: Dell Dell Universal Receiver Consumer Control as /devices/platform/scb/fd500000.pcie/pci0000:00/0000:00:00.0/0000:01:00.0/usb1/1-1/1-1.4/1-1.4.4/1-1.4.4:1.1/0003:413C:301B.0004/input/input5[    3.371553] input: Dell Dell Universal Receiver System Control as /devices/platform/scb/fd500000.pcie/pci0000:00/0000:00:00.0/0000:01:00.0/usb1/1-1/1-1.4/1-1.4.4/1-1.4.4:1.1/0003:413C:301B.0004/input/input6[    3.371669] hid-generic 0003:413C:301B.0004: input,hidraw3: USB HID v1.11 Mouse [Dell Dell Universal Receiver] on usb-0000:01:00.0-1.4.4/input1[    3.374448] hid-generic 0003:413C:301B.0005: hiddev96,hidraw4: USB HID v1.11 Device [Dell Dell Universal Receiver] on usb-0000:01:00.0-1.4.4/input2[    5.064409] usbcore: registered new interface driver brcmfmacdst-pi@raspberrypi:~ $ dmesg | grep -i pcie[    0.049547] /scb/pcie@7d500000: Fixed dependency cycle(s) with /scb/pcie@7d500000[    0.049642] /scb/pcie@7d500000: Fixed dependency cycle(s) with /scb/pcie@7d500000[    0.720379] brcm-pcie fd500000.pcie: host bridge /scb/pcie@7d500000 ranges:[    0.720401] brcm-pcie fd500000.pcie:   No bus range found for /scb/pcie@7d500000, using [bus 00-ff][    0.720420] brcm-pcie fd500000.pcie:      MEM 0x0600000000..0x063fffffff -> 0x00c0000000[    0.720434] brcm-pcie fd500000.pcie:   IB MEM 0x0000000000..0x00bfffffff -> 0x0400000000[    0.721590] brcm-pcie fd500000.pcie: PCI host bridge to bus 0000:00[    0.721674] pci 0000:00:00.0: [14e4:2711] type 01 class 0x060400 PCIe Root Port[    0.723252] pci_bus 0000:01: supply vpcie3v3 not found, using dummy regulator[    0.723327] pci_bus 0000:01: supply vpcie3v3aux not found, using dummy regulator[    0.723394] pci_bus 0000:01: supply vpcie12v not found, using dummy regulator[    0.827356] brcm-pcie fd500000.pcie: clkreq-mode set to default[    0.829416] brcm-pcie fd500000.pcie: link up, 5.0 GT/s PCIe x1 (SSC)[    0.829538] pci 0000:01:00.0: [1106:3483] type 00 class 0x0c0330 PCIe Endpoint[    0.835612] pcieport 0000:00:00.0: enabling device (0000 -> 0002)[    0.835681] pcieport 0000:00:00.0: PME: Signaling with IRQ 27[    0.835839] pcieport 0000:00:00.0: AER: enabled with IRQ 27[    2.537584] input: Logitech USB Keyboard as /devices/platform/scb/fd500000.pcie/pci0000:00/0000:00:00.0/0000:01:00.0/usb1/1-1/1-1.4/1-1.4.3/1-1.4.3:1.0/0003:046D:C31D.0001/input/input0[    2.722138] input: Logitech USB Keyboard Consumer Control as /devices/platform/scb/fd500000.pcie/pci0000:00/0000:00:00.0/0000:01:00.0/usb1/1-1/1-1.4/1-1.4.3/1-1.4.3:1.1/0003:046D:C31D.0002/input/input1[    2.775596] input: Logitech USB Keyboard System Control as /devices/platform/scb/fd500000.pcie/pci0000:00/0000:00:00.0/0000:01:00.0/usb1/1-1/1-1.4/1-1.4.3/1-1.4.3:1.1/0003:046D:C31D.0002/input/input2[    3.185162] input: Dell Dell Universal Receiver as /devices/platform/scb/fd500000.pcie/pci0000:00/0000:00:00.0/0000:01:00.0/usb1/1-1/1-1.4/1-1.4.4/1-1.4.4:1.0/0003:413C:301B.0003/input/input3[    3.317425] input: Dell Dell Universal Receiver Mouse as /devices/platform/scb/fd500000.pcie/pci0000:00/0000:00:00.0/0000:01:00.0/usb1/1-1/1-1.4/1-1.4.4/1-1.4.4:1.1/0003:413C:301B.0004/input/input4[    3.317716] input: Dell Dell Universal Receiver Consumer Control as /devices/platform/scb/fd500000.pcie/pci0000:00/0000:00:00.0/0000:01:00.0/usb1/1-1/1-1.4/1-1.4.4/1-1.4.4:1.1/0003:413C:301B.0004/input/input5[    3.371553] input: Dell Dell Universal Receiver System Control as /devices/platform/scb/fd500000.pcie/pci0000:00/0000:00:00.0/0000:01:00.0/usb1/1-1/1-1.4/1-1.4.4/1-1.4.4:1.1/0003:413C:301B.0004/input/input6dst-pi@raspberrypi:~ $ dmesg | grep -i err[    0.000000] Linux version 6.12.34+rpt-rpi-v8 (serge@raspberrypi.com) (aarch64-linux-gnu-gcc-12 (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40) #1 SMP PREEMPT Debian 1:6.12.34-1+rpt1~bookworm (2025-06-26)[    0.000000] Machine model: Raspberry Pi 4 Model B Rev 1.4[    0.000000] CPU features: detected: ARM erratum 1742098[    0.000000] CPU features: detected: ARM errata 1165522, 1319367, or 1530923[    0.000000] mempolicy: NUMA default policy overridden to 'interleave:0-1'[    0.030736] /soc/interrupt-controller@40041000: Fixed dependency cycle(s) with /soc/interrupt-controller@40041000[    0.040089] raspberrypi-firmware soc:firmware: Attached to firmware from 2025-04-30T13:33:39, variant start[    0.044097] raspberrypi-firmware soc:firmware: Firmware hash is 5560078dcc8591a00f57b9068d13e5544aeef3aa[    0.472282] kvm [1]: vgic interrupt IRQ9[    0.478557] irq_brcmstb_l2: registered L2 intc (/soc/interrupt-controller@7ef00100, parent irq: 23)[    1.148503] sdhci: Copyright(c) Pierre Ossman[    2.677490] systemd[1]: Hostname set to <raspberrypi>.[    5.385161] brcmfmac: brcmf_c_process_txcap_blob: no txcap_blob available (err=-2)[    5.442420] Bluetooth: hci0: BCM4345C0 'brcm/BCM4345C0.raspberrypi,4-model-b.hcd' Patch[    6.158002] Bluetooth: hci0: BCM43455 37.4MHz Raspberry Pi 3+-0190dst-pi@raspberrypi:~ $ dmesg | grep -i errordst-pi@raspberrypi:~ $ dmesg | grep -i warningdst-pi@raspberrypi:~ $ dmesg | grep -i faildst-pi@raspberrypi:~ $ dmesg | grep -i xhci[    1.143591] xhci_hcd 0000:01:00.0: xHCI Host Controller[    1.143607] xhci_hcd 0000:01:00.0: new USB bus registered, assigned bus number 1[    1.144505] xhci_hcd 0000:01:00.0: hcc params 0x002841eb hci version 0x100 quirks 0x0300240000000890[    1.144984] xhci_hcd 0000:01:00.0: xHCI Host Controller[    1.144992] xhci_hcd 0000:01:00.0: new USB bus registered, assigned bus number 2[    1.145000] xhci_hcd 0000:01:00.0: Host supports USB 3.0 SuperSpeed[    1.145128] usb usb1: Product: xHCI Host Controller[    1.145131] usb usb1: Manufacturer: Linux 6.12.34+rpt-rpi-v8 xhci-hcd[    1.145638] usb usb2: Product: xHCI Host Controller[    1.145641] usb usb2: Manufacturer: Linux 6.12.34+rpt-rpi-v8 xhci-hcd[    1.395429] usb 1-1: new high-speed USB device number 2 using xhci_hcd[    1.831367] usb 1-1.4: new high-speed USB device number 3 using xhci_hcd[    2.315372] usb 1-1.4.3: new low-speed USB device number 4 using xhci_hcd[    2.963407] usb 1-1.4.4: new full-speed USB device number 5 using xhci_hcddst-pi@raspberrypi:~ $ lsusbBus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hubBus 001 Device 005: ID 413c:301b Dell Computer Corp. Universal Bluetooth ReceiverBus 001 Device 004: ID 046d:c31d Logitech, Inc. Media Keyboard K200Bus 001 Device 003: ID 1a40:0101 Terminus Technology Inc. HubBus 001 Device 002: ID 2109:3431 VIA Labs, Inc. HubBus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hubdst-pi@raspberrypi:~ $ lspci00:00.0 PCI bridge: Broadcom Inc. and subsidiaries BCM2711 PCIe Bridge (rev 10)01:00.0 USB controller: VIA Technologies, Inc. VL805/806 xHCI USB 3.0 Controller (rev 01)dst-pi@raspberrypi:~ $