Cannot connect MK4 to OP (Raspberry 4) by USB-C

What is the problem?

Suddenly I cannot connect to MK4 anymore, SerialPort is not found.

What did you already try to solve it?

Switched between four different usb a - usb c cables (that worked before),
switched to another Raspi 4,
formatted sd and new clean install of OP (from Mac and Windows with Raspberry PI Imager, several times),
changed power plugs (both original Raspi),
run OP in Save mode,
Pronterface MK4->Windows is working properly (same cables)

Have you tried running in safe mode?

yes

Did running in safe mode solve the problem?

no

Systeminfo Bundle

You can download this in OctoPrint's System Information dialog ... no bundle, no support!)
octoprint-systeminfo-20240701212845.zip (104.1 KB)

WRITE HERE

Additional information about your setup

OctoPrint version 1.10.2, OctoPi version 1.0.0, printer Prusa Mk4 /MMU, firmware 6.0.3, Safari, Mac, ... as much data as possible

dmesg says:

[    6.064968] hub 1-1:1.0: hub_ext_port_status failed (err = -71)
[    6.065006] usb 1-1-port2: Cannot enable. Maybe the USB cable is bad?
[    6.065326] usb 1-1-port2: cannot disable (err = -71)
[    6.066169] usb 1-1-port2: cannot reset (err = -71)
[    6.066518] usb 1-1-port2: cannot reset (err = -71)
[    6.066832] usb 1-1-port2: cannot reset (err = -71)
[    6.067182] usb 1-1-port2: cannot reset (err = -71)
[    6.067525] usb 1-1-port2: cannot reset (err = -71)
[    6.067542] usb 1-1-port2: Cannot enable. Maybe the USB cable is bad?
[    6.067912] usb 1-1-port2: cannot disable (err = -71)
[    6.068154] usb 1-1-port2: attempt power cycle
[    6.126915] cfg80211: Loading compiled-in X.509 certificates for regulatory database
[    6.187296] bcm2835_mmal_vchiq: module is from the staging directory, the quality is unknown, you have been warned.
[    6.204010] bcm2835_mmal_vchiq: module is from the staging directory, the quality is unknown, you have been warned.
[    6.216659] bcm2835_v4l2: module is from the staging directory, the quality is unknown, you have been warned.
[    6.224027] bcm2835_isp: module is from the staging directory, the quality is unknown, you have been warned.
[    6.240942] cfg80211: Loaded X.509 cert 'sforshee: 00b28ddf47aef9cea7'
[    6.268962] cfg80211: loaded regulatory.db is malformed or signature is missing/invalid
[    6.405173] usb 1-1-port2: cannot reset (err = -71)
[    6.405546] usb 1-1-port2: cannot reset (err = -71)
[    6.405895] usb 1-1-port2: cannot reset (err = -71)
[    6.406216] usb 1-1-port2: cannot reset (err = -71)
[    6.406543] usb 1-1-port2: cannot reset (err = -71)
[    6.406558] usb 1-1-port2: Cannot enable. Maybe the USB cable is bad?
[    6.406898] usb 1-1-port2: cannot disable (err = -71)
[    6.407701] usb 1-1-port2: cannot reset (err = -71)
[    6.408053] usb 1-1-port2: cannot reset (err = -71)
[    6.408389] usb 1-1-port2: cannot reset (err = -71)
[    6.408709] usb 1-1-port2: cannot reset (err = -71)
[    6.409043] usb 1-1-port2: cannot reset (err = -71)
[    6.409059] usb 1-1-port2: Cannot enable. Maybe the USB cable is bad?
[    6.409397] usb 1-1-port2: cannot disable (err = -71)
[    6.409626] usb 1-1-port2: unable to enumerate USB device
[    6.409963] bcm2835_codec: module is from the staging directory, the quality is unknown, you have been warned.
[    6.409972] usb 1-1-port2: cannot disable (err = -71)
[    6.410979] usb 1-1: Failed to suspend device, error -71
[    6.446694] rpivid_hevc: module is from the staging directory, the quality is unknown, you have been warned.


the whole dsmeg:

[    0.000000] Booting Linux on physical CPU 0x0
[    0.000000] Linux version 6.1.21-v7l+ (dom@buildbot) (arm-linux-gnueabihf-gcc-8 (Ubuntu/Linaro 8.4.0-3ubuntu1) 8.4.0, GNU ld (GNU Binutils for Ubuntu) 2.34) #1642 SMP Mon Apr  3 17:22:30 BST 2023
[    0.000000] CPU: ARMv7 Processor [410fd083] revision 3 (ARMv7), cr=30c5383d
[    0.000000] CPU: div instructions available: patching division code
[    0.000000] CPU: PIPT / VIPT nonaliasing data cache, PIPT instruction cache
[    0.000000] OF: fdt: Machine model: Raspberry Pi 4 Model B Rev 1.2
[    0.000000] random: crng init done
[    0.000000] Memory policy: Data cache writealloc
[    0.000000] Reserved memory: created CMA memory pool at 0x000000000ec00000, size 512 MiB
[    0.000000] OF: reserved mem: initialized node linux,cma, compatible id shared-dma-pool
[    0.000000] Zone ranges:
[    0.000000]   DMA      [mem 0x0000000000000000-0x000000002fffffff]
[    0.000000]   Normal   empty
[    0.000000]   HighMem  [mem 0x0000000030000000-0x00000000fbffffff]
[    0.000000] Movable zone start for each node
[    0.000000] Early memory node ranges
[    0.000000]   node   0: [mem 0x0000000000000000-0x0000000037ffffff]
[    0.000000]   node   0: [mem 0x0000000040000000-0x00000000fbffffff]
[    0.000000] Initmem setup node 0 [mem 0x0000000000000000-0x00000000fbffffff]
[    0.000000] percpu: Embedded 17 pages/cpu s36884 r8192 d24556 u69632
[    0.000000] pcpu-alloc: s36884 r8192 d24556 u69632 alloc=17*4096
[    0.000000] pcpu-alloc: [0] 0 [0] 1 [0] 2 [0] 3 
[    0.000000] Built 1 zonelists, mobility grouping on.  Total pages: 997696
[    0.000000] Kernel command line: coherent_pool=1M 8250.nr_uarts=0 snd_bcm2835.enable_headphones=0 snd_bcm2835.enable_headphones=1 snd_bcm2835.enable_hdmi=1  smsc95xx.macaddr=DC:A6:32:87:3E:3E vc_mem.mem_base=0x3ec00000 vc_mem.mem_size=0x40000000  console=Serial0,115200 console=tty1 root=PARTUUID=30d97a12-02 rootfstype=ext4 fsck.repair=yes rootwait cfg80211.ieee80211_regdom=DE
[    0.000000] Dentry cache hash table entries: 131072 (order: 7, 524288 bytes, linear)
[    0.000000] Inode-cache hash table entries: 65536 (order: 6, 262144 bytes, linear)
[    0.000000] mem auto-init: stack:off, heap alloc:off, heap free:off
[    0.000000] software IO TLB: area num 4.
[    0.000000] software IO TLB: mapped [mem 0x0000000008890000-0x000000000c890000] (64MB)
[    0.000000] Memory: 3351376K/3997696K available (10240K kernel code, 1502K rwdata, 3128K rodata, 2048K init, 634K bss, 122032K reserved, 524288K cma-reserved, 3211264K highmem)
[    0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=4, Nodes=1
[    0.000000] ftrace: allocating 37084 entries in 109 pages
[    0.000000] ftrace: allocated 109 pages with 5 groups
[    0.000000] trace event string verifier disabled
[    0.000000] rcu: Hierarchical RCU implementation.
[    0.000000] 	Rude variant of Tasks RCU enabled.
[    0.000000] 	Tracing variant of Tasks RCU enabled.
[    0.000000] rcu: RCU calculated value of scheduler-enlistment delay is 10 jiffies.
[    0.000000] NR_IRQS: 16, nr_irqs: 16, preallocated irqs: 16
[    0.000000] GIC: Using split EOI/Deactivate mode
[    0.000000] rcu: srcu_init: Setting srcu_struct sizes based on contention.
[    0.000000] arch_timer: cp15 timer(s) running at 54.00MHz (phys).
[    0.000000] clocksource: arch_sys_counter: mask: 0xffffffffffffff max_cycles: 0xc743ce346, max_idle_ns: 440795203123 ns
[    0.000001] sched_clock: 56 bits at 54MHz, resolution 18ns, wraps every 4398046511102ns
[    0.000016] Switching to timer-based delay loop, resolution 18ns
[    0.000325] Console: colour dummy device 80x30
[    0.000839] printk: console [tty1] enabled
[    0.000898] Calibrating delay loop (skipped), value calculated using timer frequency.. 108.00 BogoMIPS (lpj=540000)
[    0.000937] pid_max: default: 32768 minimum: 301
[    0.001062] LSM: Security Framework initializing
[    0.001237] Mount-cache hash table entries: 2048 (order: 1, 8192 bytes, linear)
[    0.001276] Mountpoint-cache hash table entries: 2048 (order: 1, 8192 bytes, linear)
[    0.002478] cgroup: Disabling memory control group subsystem
[    0.002676] CPU: Testing write buffer coherency: ok
[    0.002734] CPU0: Spectre BHB: enabling loop workaround for all CPUs
[    0.003079] CPU0: thread -1, cpu 0, socket 0, mpidr 80000000
[    0.003995] cblist_init_generic: Setting adjustable number of callback queues.
[    0.004026] cblist_init_generic: Setting shift to 2 and lim to 1.
[    0.004155] cblist_init_generic: Setting shift to 2 and lim to 1.
[    0.004303] Setting up static identity map for 0x200000 - 0x20003c
[    0.004471] rcu: Hierarchical SRCU implementation.
[    0.004493] rcu: 	Max phase no-delay instances is 1000.
[    0.005222] smp: Bringing up secondary CPUs ...
[    0.006125] CPU1: thread -1, cpu 1, socket 0, mpidr 80000001
[    0.007096] CPU2: thread -1, cpu 2, socket 0, mpidr 80000002
[    0.008060] CPU3: thread -1, cpu 3, socket 0, mpidr 80000003
[    0.008177] smp: Brought up 1 node, 4 CPUs
[    0.008239] SMP: Total of 4 processors activated (432.00 BogoMIPS).
[    0.008263] CPU: All CPU(s) started in HYP mode.
[    0.008281] CPU: Virtualization extensions available.
[    0.008884] devtmpfs: initialized
[    0.020301] VFP support v0.3: implementor 41 architecture 3 part 40 variant 8 rev 0
[    0.020504] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[    0.020550] futex hash table entries: 1024 (order: 4, 65536 bytes, linear)
[    0.034753] pinctrl core: initialized pinctrl subsystem
[    0.035771] NET: Registered PF_NETLINK/PF_ROUTE protocol family
[    0.038712] DMA: preallocated 1024 KiB pool for atomic coherent allocations
[    0.039303] audit: initializing netlink subsys (disabled)
[    0.039519] audit: type=2000 audit(0.030:1): state=initialized audit_enabled=0 res=1
[    0.040073] thermal_sys: Registered thermal governor 'step_wise'
[    0.040702] hw-breakpoint: found 5 (+1 reserved) breakpoint and 4 watchpoint registers.
[    0.040747] hw-breakpoint: maximum watchpoint size is 8 bytes.
[    0.041109] Serial: AMBA PL011 UART driver
[    0.048431] bcm2835-mbox fe00b880.mailbox: mailbox enabled
[    0.070034] raspberrypi-firmware soc:firmware: Attached to firmware from 2023-03-17T10:51:33, variant start_x
[    0.080048] raspberrypi-firmware soc:firmware: Firmware hash is 82f3750a65fadae9a38077e3c2e217ad158c8d54
[    0.121632] kprobes: kprobe jump-optimization is enabled. All kprobes are optimized if possible.
[    0.127911] bcm2835-dma fe007000.dma: DMA legacy API manager, dmachans=0x1
[    0.131767] SCSI subsystem initialized
[    0.131980] usbcore: registered new interface driver usbfs
[    0.132043] usbcore: registered new interface driver hub
[    0.132106] usbcore: registered new device driver usb
[    0.132325] usb_phy_generic phy: supply vcc not found, using dummy regulator
[    0.132486] usb_phy_generic phy: dummy supplies not allowed for exclusive requests
[    0.132756] pps_core: LinuxPPS API ver. 1 registered
[    0.132778] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@linux.it>
[    0.132818] PTP clock support registered
[    0.133737] vgaarb: loaded
[    1.394525] clocksource: Switched to clocksource arch_sys_counter
[    1.477662] VFS: Disk quotas dquot_6.6.0
[    1.477770] VFS: Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
[    1.477923] FS-Cache: Loaded
[    1.478147] CacheFiles: Loaded
[    1.486342] NET: Registered PF_INET protocol family
[    1.486604] IP idents hash table entries: 16384 (order: 5, 131072 bytes, linear)
[    1.488373] tcp_listen_portaddr_hash hash table entries: 512 (order: 0, 4096 bytes, linear)
[    1.488421] Table-perturb hash table entries: 65536 (order: 6, 262144 bytes, linear)
[    1.488519] TCP established hash table entries: 8192 (order: 3, 32768 bytes, linear)
[    1.488591] TCP bind hash table entries: 8192 (order: 5, 131072 bytes, linear)
[    1.488709] TCP: Hash tables configured (established 8192 bind 8192)
[    1.488836] UDP hash table entries: 512 (order: 2, 16384 bytes, linear)
[    1.488889] UDP-Lite hash table entries: 512 (order: 2, 16384 bytes, linear)
[    1.489070] NET: Registered PF_UNIX/PF_LOCAL protocol family
[    1.489567] RPC: Registered named UNIX socket transport module.
[    1.489593] RPC: Registered udp transport module.
[    1.489612] RPC: Registered tcp transport module.
[    1.489630] RPC: Registered tcp NFSv4.1 backchannel transport module.
[    1.489659] PCI: CLS 0 bytes, default 64
[    1.491255] hw perfevents: enabled with armv7_cortex_a7 PMU driver, 7 counters available
[    1.492836] Initialise system trusted keyrings
[    1.493047] workingset: timestamp_bits=14 max_order=20 bucket_order=6
[    1.499840] zbud: loaded
[    1.501960] NFS: Registering the id_resolver key type
[    1.502004] Key type id_resolver registered
[    1.502025] Key type id_legacy registered
[    1.502136] nfs4filelayout_init: NFSv4 File Layout Driver Registering...
[    1.502161] nfs4flexfilelayout_init: NFSv4 Flexfile Layout Driver Registering...
[    1.503210] Key type asymmetric registered
[    1.503237] Asymmetric key parser 'x509' registered
[    1.503484] bounce: pool size: 64 pages
[    1.503632] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 247)
[    1.503831] io scheduler mq-deadline registered
[    1.503856] io scheduler kyber registered
[    1.509895] brcm-pcie fd500000.pcie: host bridge /scb/pcie@7d500000 ranges:
[    1.509947] brcm-pcie fd500000.pcie:   No bus range found for /scb/pcie@7d500000, using [bus 00-ff]
[    1.510030] brcm-pcie fd500000.pcie:      MEM 0x0600000000..0x063fffffff -> 0x00c0000000
[    1.510102] brcm-pcie fd500000.pcie:   IB MEM 0x0000000000..0x00bfffffff -> 0x0400000000
[    1.510949] brcm-pcie fd500000.pcie: PCI host bridge to bus 0000:00
[    1.510979] pci_bus 0000:00: root bus resource [bus 00-ff]
[    1.511007] pci_bus 0000:00: root bus resource [mem 0x600000000-0x63fffffff] (bus address [0xc0000000-0xffffffff])
[    1.511078] pci 0000:00:00.0: [14e4:2711] type 01 class 0x060400
[    1.511230] pci 0000:00:00.0: PME# supported from D0 D3hot
[    1.514225] PCI: bus0: Fast back to back transfers disabled
[    1.514389] pci_bus 0000:01: supply vpcie3v3 not found, using dummy regulator
[    1.514588] pci_bus 0000:01: supply vpcie3v3aux not found, using dummy regulator
[    1.514677] pci_bus 0000:01: supply vpcie12v not found, using dummy regulator
[    1.576606] brcm-pcie fd500000.pcie: link up, 5.0 GT/s PCIe x1 (SSC)
[    1.576763] pci 0000:01:00.0: [1106:3483] type 00 class 0x0c0330
[    1.576886] pci 0000:01:00.0: reg 0x10: [mem 0x00000000-0x00000fff 64bit]
[    1.577266] pci 0000:01:00.0: PME# supported from D0 D3cold
[    1.577751] PCI: bus1: Fast back to back transfers disabled
[    1.577806] pci 0000:00:00.0: BAR 8: assigned [mem 0x600000000-0x6000fffff]
[    1.577840] pci 0000:01:00.0: BAR 0: assigned [mem 0x600000000-0x600000fff 64bit]
[    1.577928] pci 0000:00:00.0: PCI bridge to [bus 01]
[    1.577956] pci 0000:00:00.0:   bridge window [mem 0x600000000-0x6000fffff]
[    1.578234] pcieport 0000:00:00.0: enabling device (0000 -> 0002)
[    1.578415] pcieport 0000:00:00.0: PME: Signaling with IRQ 45
[    1.587869] iproc-rng200 fe104000.rng: hwrng registered
[    1.588088] vc-mem: phys_addr:0x00000000 mem_base=0x3ec00000 mem_size:0x40000000(1024 MiB)
[    1.589031] gpiomem-bcm2835 fe200000.gpiomem: Initialised: Registers at 0xfe200000
[    1.599104] brd: module loaded
[    1.606051] loop: module loaded
[    1.606613] Loading iSCSI transport class v2.0-870.
[    1.610406] bcmgenet fd580000.ethernet: GENET 5.0 EPHY: 0x0000
[    1.704624] unimac-mdio unimac-mdio.-19: Broadcom UniMAC MDIO bus
[    1.705595] usbcore: registered new interface driver r8152
[    1.705668] usbcore: registered new interface driver lan78xx
[    1.705742] usbcore: registered new interface driver smsc95xx
[    1.707728] xhci_hcd 0000:01:00.0: enabling device (0140 -> 0142)
[    1.707885] xhci_hcd 0000:01:00.0: xHCI Host Controller
[    1.707924] xhci_hcd 0000:01:00.0: new USB bus registered, assigned bus number 1
[    1.711982] xhci_hcd 0000:01:00.0: hcc params 0x002841eb hci version 0x100 quirks 0x0001e40000000890
[    1.712855] xhci_hcd 0000:01:00.0: xHCI Host Controller
[    1.712890] xhci_hcd 0000:01:00.0: new USB bus registered, assigned bus number 2
[    1.712924] xhci_hcd 0000:01:00.0: Host supports USB 3.0 SuperSpeed
[    1.713205] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 6.01
[    1.713240] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    1.713269] usb usb1: Product: xHCI Host Controller
[    1.713291] usb usb1: Manufacturer: Linux 6.1.21-v7l+ xhci-hcd
[    1.713313] usb usb1: SerialNumber: 0000:01:00.0
[    1.713890] hub 1-0:1.0: USB hub found
[    1.713951] hub 1-0:1.0: 1 port detected
[    1.714709] usb usb2: New USB device found, idVendor=1d6b, idProduct=0003, bcdDevice= 6.01
[    1.714746] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    1.714774] usb usb2: Product: xHCI Host Controller
[    1.714796] usb usb2: Manufacturer: Linux 6.1.21-v7l+ xhci-hcd
[    1.714818] usb usb2: SerialNumber: 0000:01:00.0
[    1.715343] hub 2-0:1.0: USB hub found
[    1.715421] hub 2-0:1.0: 4 ports detected
[    1.716694] dwc_otg: version 3.00a 10-AUG-2012 (platform bus)
[    1.716878] dwc_otg: FIQ enabled
[    1.716888] dwc_otg: NAK holdoff enabled
[    1.716897] dwc_otg: FIQ split-transaction FSM enabled
[    1.716910] Module dwc_common_port init
[    1.717262] usbcore: registered new interface driver uas
[    1.717361] usbcore: registered new interface driver usb-storage
[    1.717539] mousedev: PS/2 mouse device common for all mice
[    1.721178] sdhci: Secure Digital Host Controller Interface driver
[    1.721208] sdhci: Copyright(c) Pierre Ossman
[    1.721561] sdhci-pltfm: SDHCI platform and OF driver helper
[    1.724314] ledtrig-cpu: registered to indicate activity on CPUs
[    1.724640] hid: raw HID events driver (C) Jiri Kosina
[    1.724801] usbcore: registered new interface driver usbhid
[    1.724825] usbhid: USB HID core driver
[    1.729287] Initializing XFRM netlink socket
[    1.729348] NET: Registered PF_PACKET protocol family
[    1.729436] Key type dns_resolver registered
[    1.729930] Registering SWP/SWPB emulation handler
[    1.730602] registered taskstats version 1
[    1.730665] Loading compiled-in X.509 certificates
[    1.731435] Key type .fscrypt registered
[    1.731459] Key type fscrypt-provisioning registered
[    1.742646] uart-pl011 fe201000.serial: there is not valid maps for state default
[    1.743117] uart-pl011 fe201000.serial: cts_event_workaround enabled
[    1.743240] fe201000.serial: ttyAMA0 at MMIO 0xfe201000 (irq = 50, base_baud = 0) is a PL011 rev2
[    1.750847] bcm2835-wdt bcm2835-wdt: Broadcom BCM2835 watchdog timer
[    1.751162] bcm2835-power bcm2835-power: Broadcom BCM2835 power domains driver
[    1.752064] mmc-bcm2835 fe300000.mmcnr: mmc_debug:0 mmc_debug2:0
[    1.752095] mmc-bcm2835 fe300000.mmcnr: DMA channel allocated
[    1.779426] of_cfs_init
[    1.779608] of_cfs_init: OK
[    1.815668] mmc0: SDHCI controller on fe340000.mmc [fe340000.mmc] using ADMA
[    1.815899] Waiting for root device PARTUUID=30d97a12-02...
[    1.861373] mmc1: new high speed SDIO card at address 0001
[    1.914358] mmc0: new ultra high speed DDR50 SDXC card at address 5048
[    1.915157] mmcblk0: mmc0:5048 SD128 119 GiB 
[    1.917880]  mmcblk0: p1 p2
[    1.918314] mmcblk0: mmc0:5048 SD128 119 GiB (quirks 0x00004000)
[    1.955606] EXT4-fs (mmcblk0p2): mounted filesystem with ordered data mode. Quota mode: none.
[    1.955707] VFS: Mounted root (ext4 filesystem) readonly on device 179:2.
[    1.960602] devtmpfs: mounted
[    1.968626] Freeing unused kernel image (initmem) memory: 2048K
[    1.974819] Run /sbin/init as init process
[    1.974843]   with arguments:
[    1.974851]     /sbin/init
[    1.974860]   with environment:
[    1.974869]     HOME=/
[    1.974877]     TERM=linux
[    2.014563] usb 1-1: new high-speed USB device number 2 using xhci_hcd
[    2.197196] usb 1-1: New USB device found, idVendor=2109, idProduct=3431, bcdDevice= 4.21
[    2.197243] usb 1-1: New USB device strings: Mfr=0, Product=1, SerialNumber=0
[    2.197270] usb 1-1: Product: USB2.0 Hub
[    2.199261] hub 1-1:1.0: USB hub found
[    2.199579] hub 1-1:1.0: 4 ports detected
[    2.305180] systemd[1]: System time before build time, advancing clock.
[    2.486755] NET: Registered PF_INET6 protocol family
[    2.488104] Segment Routing with IPv6
[    2.488153] In-situ OAM (IOAM) with IPv6
[    2.544316] systemd[1]: systemd 247.3-7+rpi1+deb11u1 running in system mode. (+PAM +AUDIT +SELINUX +IMA +APPARMOR +SMACK +SYSVINIT +UTMP +LIBCRYPTSETUP +GCRYPT +GNUTLS +ACL +XZ +LZ4 +ZSTD +SECCOMP +BLKID +ELFUTILS +KMOD +IDN2 -IDN +PCRE2 default-hierarchy=unified)
[    2.545213] systemd[1]: Detected architecture arm.
[    2.557922] systemd[1]: Set hostname to <Prusa>.
[    3.401522] systemd[1]: Queued start job for default target Multi-User System.
[    3.457642] systemd[1]: Created slice system-getty.slice.
[    3.459174] systemd[1]: Created slice system-modprobe.slice.
[    3.460301] systemd[1]: Created slice system-systemd\x2dfsck.slice.
[    3.461292] systemd[1]: Created slice User and Session Slice.
[    3.461940] systemd[1]: Started Dispatch Password Requests to Console Directory Watch.
[    3.462536] systemd[1]: Started Forward Password Requests to Wall Directory Watch.
[    3.463719] systemd[1]: Set up automount Arbitrary Executable File Formats File System Automount Point.
[    3.464235] systemd[1]: Reached target Local Encrypted Volumes.
[    3.464956] systemd[1]: Reached target Paths.
[    3.465396] systemd[1]: Reached target Slices.
[    3.465786] systemd[1]: Reached target Swap.
[    3.466961] systemd[1]: Listening on Syslog Socket.
[    3.467817] systemd[1]: Listening on fsck to fsckd communication Socket.
[    3.468382] systemd[1]: Listening on initctl Compatibility Named Pipe.
[    3.469550] systemd[1]: Listening on Journal Audit Socket.
[    3.470444] systemd[1]: Listening on Journal Socket (/dev/log).
[    3.471487] systemd[1]: Listening on Journal Socket.
[    3.473445] systemd[1]: Listening on udev Control Socket.
[    3.474337] systemd[1]: Listening on udev Kernel Socket.
[    3.475454] systemd[1]: Condition check resulted in Huge Pages File System being skipped.
[    3.479876] systemd[1]: Mounting POSIX Message Queue File System...
[    3.485399] systemd[1]: Mounting RPC Pipe File System...
[    3.491613] systemd[1]: Mounting Kernel Debug File System...
[    3.498317] systemd[1]: Mounting Kernel Trace File System...
[    3.499361] systemd[1]: Condition check resulted in Kernel Module supporting RPCSEC_GSS being skipped.
[    3.506575] systemd[1]: Starting Restore / save the current clock...
[    3.512766] systemd[1]: Starting Set the console keyboard layout...
[    3.518462] systemd[1]: Starting Create list of static device nodes for the current kernel...
[    3.525390] systemd[1]: Starting Load Kernel Module configfs...
[    3.531915] systemd[1]: Starting Load Kernel Module drm...
[    3.538990] systemd[1]: Starting Load Kernel Module fuse...
[    3.543375] systemd[1]: Condition check resulted in Set Up Additional Binary Formats being skipped.
[    3.549600] systemd[1]: Starting File System Check on Root Device...
[    3.561709] systemd[1]: Starting Journal Service...
[    3.570081] systemd[1]: Starting Load Kernel Modules...
[    3.576613] systemd[1]: Starting Coldplug All udev Devices...
[    3.604034] systemd[1]: Mounted POSIX Message Queue File System.
[    3.613490] systemd[1]: Mounted RPC Pipe File System.
[    3.614410] systemd[1]: Mounted Kernel Debug File System.
[    3.615491] systemd[1]: Mounted Kernel Trace File System.
[    3.622206] systemd[1]: Finished Create list of static device nodes for the current kernel.
[    3.627104] systemd[1]: Finished Restore / save the current clock.
[    3.628949] systemd[1]: modprobe@configfs.service: Succeeded.
[    3.630880] systemd[1]: Finished Load Kernel Module configfs.
[    3.645736] fuse: init (API version 7.37)
[    3.655285] systemd[1]: Mounting Kernel Configuration File System...
[    3.657793] systemd[1]: modprobe@fuse.service: Succeeded.
[    3.659128] systemd[1]: Finished Load Kernel Module fuse.
[    3.666511] i2c_dev: i2c /dev entries driver
[    3.686756] systemd[1]: Mounting FUSE Control File System...
[    3.708724] systemd[1]: Started File System Check Daemon to report status.
[    3.738697] systemd[1]: Finished Load Kernel Modules.
[    3.742264] systemd[1]: Mounted Kernel Configuration File System.
[    3.743109] systemd[1]: Mounted FUSE Control File System.
[    3.766525] systemd[1]: Starting Apply Kernel Variables...
[    3.838936] systemd[1]: modprobe@drm.service: Succeeded.
[    3.840064] systemd[1]: Finished Load Kernel Module drm.
[    3.849239] systemd[1]: Finished Apply Kernel Variables.
[    3.896281] systemd[1]: Started Journal Service.
[    4.202209] EXT4-fs (mmcblk0p2): re-mounted. Quota mode: none.
[    4.306345] systemd-journald[140]: Received client request to flush runtime journal.
[    4.323345] systemd-journald[140]: File /var/log/journal/2238ac08d4dc46a198cf3f9dbff2c63e/system.journal corrupted or uncleanly shut down, renaming and replacing.
[    5.179830] mc: Linux media interface: v0.10
[    5.252618] vc_sm_cma: module is from the staging directory, the quality is unknown, you have been warned.
[    5.254609] bcm2835_vc_sm_cma_probe: Videocore shared memory driver
[    5.254634] [vc_sm_connected_init]: start
[    5.264852] [vc_sm_connected_init]: installed successfully
[    5.343635] snd_bcm2835: module is from the staging directory, the quality is unknown, you have been warned.
[    5.460062] bcm2835_audio bcm2835_audio: card created with 8 channels
[    5.632346] [drm] Initialized v3d 1.0.0 20180419 for fec00000.v3d on minor 0
[    5.896722] videodev: Linux video capture interface: v2.00

....and after the error 71:

[    6.543847] rpivid feb10000.codec: Device registered as /dev/video19
[    6.547835] brcmfmac: F1 signature read @0x18000000=0x15264345
[    6.562538] bcm2835-codec bcm2835-codec: Device registered as /dev/video10
[    6.562585] bcm2835-codec bcm2835-codec: Loaded V4L2 decode
[    6.563626] bcm2835-isp bcm2835-isp: Device node output[0] registered as /dev/video13
[    6.565395] bcm2835-isp bcm2835-isp: Device node capture[0] registered as /dev/video14
[    6.565884] bcm2835-isp bcm2835-isp: Device node capture[1] registered as /dev/video15
[    6.568333] bcm2835-isp bcm2835-isp: Device node stats[2] registered as /dev/video16
[    6.568365] bcm2835-isp bcm2835-isp: Register output node 0 with media controller
[    6.568385] bcm2835-isp bcm2835-isp: Register capture node 1 with media controller
[    6.568402] bcm2835-isp bcm2835-isp: Register capture node 2 with media controller
[    6.568418] bcm2835-isp bcm2835-isp: Register capture node 3 with media controller
[    6.573970] brcmfmac: brcmf_fw_alloc_request: using brcm/brcmfmac43455-sdio for chip BCM4345/6
[    6.574883] brcmfmac mmc1:0001:1: Direct firmware load for brcm/brcmfmac43455-sdio.raspberrypi,4-model-b.bin failed with error -2
[    6.578753] usbcore: registered new interface driver brcmfmac
[    6.579473] bcm2835-isp bcm2835-isp: Device node output[0] registered as /dev/video20
[    6.580068] bcm2835-isp bcm2835-isp: Device node capture[0] registered as /dev/video21
[    6.580447] bcm2835-isp bcm2835-isp: Device node capture[1] registered as /dev/video22
[    6.580742] bcm2835-isp bcm2835-isp: Device node stats[2] registered as /dev/video23
[    6.580768] bcm2835-isp bcm2835-isp: Register output node 0 with media controller
[    6.580787] bcm2835-isp bcm2835-isp: Register capture node 1 with media controller
[    6.580804] bcm2835-isp bcm2835-isp: Register capture node 2 with media controller
[    6.580819] bcm2835-isp bcm2835-isp: Register capture node 3 with media controller
[    6.581007] bcm2835-isp bcm2835-isp: Loaded V4L2 bcm2835-isp
[    6.586308] bcm2835-codec bcm2835-codec: Device registered as /dev/video11
[    6.586348] bcm2835-codec bcm2835-codec: Loaded V4L2 encode
[    6.594860] bcm2835-codec bcm2835-codec: Device registered as /dev/video12
[    6.594911] bcm2835-codec bcm2835-codec: Loaded V4L2 isp
[    6.604121] bcm2835-codec bcm2835-codec: Device registered as /dev/video18
[    6.604173] bcm2835-codec bcm2835-codec: Loaded V4L2 image_fx
[    6.622988] bcm2835-codec bcm2835-codec: Device registered as /dev/video31
[    6.623037] bcm2835-codec bcm2835-codec: Loaded V4L2 encode_image
[    6.888917] brcmfmac: brcmf_c_preinit_dcmds: Firmware: BCM4345/6 wl0: Nov  1 2021 00:37:25 version 7.45.241 (1a2f2fa CY) FWID 01-703fd60
[    7.198511] uart-pl011 fe201000.serial: no DMA platform data
[    7.240678] 8021q: 802.1Q VLAN Support v1.8
[    7.428081] Adding 102396k swap on /var/swap.  Priority:-2 extents:1 across:102396k SSFS
[    7.496836] [drm] No displays found. Consider forcing hotplug if HDMI is attached
[    7.496871] vc4-drm gpu: bound fe600000.firmwarekms (ops vc4_fkms_ops [vc4])
[    7.501492] [drm] Initialized vc4 0.0.0 20140616 for gpu on minor 1
[    7.656768] brcmfmac: brcmf_cfg80211_set_power_mgmt: power save disabled
[    7.939848] bcmgenet fd580000.ethernet: configuring instance for external RGMII (RX delay)
[    7.942513] bcmgenet fd580000.ethernet eth0: Link is Down
[   13.172753] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[   14.116413] Bluetooth: Core ver 2.22
[   14.116497] NET: Registered PF_BLUETOOTH protocol family
[   14.116507] Bluetooth: HCI device and connection manager initialized
[   14.116526] Bluetooth: HCI socket layer initialized
[   14.116538] Bluetooth: L2CAP socket layer initialized
[   14.116558] Bluetooth: SCO socket layer initialized
[   14.125231] Bluetooth: HCI UART driver ver 2.3
[   14.125241] Bluetooth: HCI UART protocol H4 registered
[   14.125287] Bluetooth: HCI UART protocol Three-wire (H5) registered
[   14.125391] Bluetooth: HCI UART protocol Broadcom registered
[   14.445662] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[   14.445674] Bluetooth: BNEP filters: protocol multicast
[   14.445686] Bluetooth: BNEP socket layer initialized
[   14.449899] Bluetooth: MGMT ver 1.22
[   14.461938] NET: Registered PF_ALG protocol family
[   14.479233] cryptd: max_cpu_qlen set to 1000

Just to be sure - is the printer powered on?

Did you change any settings on the printer? Fw update, enabled WiFi module or something else?

Hi, printer is powered on. I did a fw update, after the connection couldn’t be established. I disabled WiFi on printer side, after the connection did not establish. I turned of prusa connect and mmu after the connection problems. It did not make a change. The Logitech webcam, does not work as well since the problems started. It usually should work, even with no printer connection, right ? Just tested mouse and keyboard, they won’t connect either to the raspi(s)
I downgraded OP, no change.

I am no Linux pro, but could it be a kernel problem ? Is there something in in raspberry-config I could try ?

Ok, after 10 days hit n miss I found a solution for me.
I reinstalled OP not by using the Raspberry imager, but BalenaEtcher on MacOS (manually/formated sd before with boardtools/wifi settings and so on). Since than the ports and USBs are recognized.

1 Like

Thats odd, I have just used Raspberry Pi Imager on a Mac to download and install Octoprint for a Prusa Mk4 and it "just worked".

I suspect an SD card issue here rather than a Octoprint or similar. SD cards are not as reliable as we would like.