Board was talking to the PC... now its not

I was able to upload a sketch to my new Giga R1 board for about a week. Now when I connect to ANY of my local linux boxes all I get is:

Fri Nov 10 12:53:53 2023] usb 1-6: new full-speed USB device number 11 using xhci_hcd
[Fri Nov 10 12:54:09 2023] usb 1-6: device descriptor read/64, error -110
[Fri Nov 10 12:54:25 2023] usb 1-6: device descriptor read/64, error -110
[Fri Nov 10 12:54:25 2023] usb 1-6: new full-speed USB device number 12 using xhci_hcd
[Fri Nov 10 12:54:41 2023] usb 1-6: device descriptor read/64, error -110
[Fri Nov 10 12:54:56 2023] usb 1-6: device descriptor read/64, error -110
[Fri Nov 10 12:54:57 2023] usb usb1-port6: attempt power cycle
[Fri Nov 10 12:54:57 2023] usb 1-6: new full-speed USB device number 13 using xhci_hcd
[Fri Nov 10 12:55:02 2023] xhci_hcd 0000:00:14.0: Timeout while waiting for setup device command
[Fri Nov 10 12:55:08 2023] xhci_hcd 0000:00:14.0: Timeout while waiting for setup device command
[Fri Nov 10 12:55:08 2023] usb 1-6: device not accepting address 13, error -62
[Fri Nov 10 12:55:08 2023] usb 1-6: new full-speed USB device number 14 using xhci_hcd
[Fri Nov 10 12:55:13 2023] xhci_hcd 0000:00:14.0: Timeout while waiting for setup device command
[Fri Nov 10 12:55:19 2023] xhci_hcd 0000:00:14.0: Timeout while waiting for setup device command
[Fri Nov 10 12:55:19 2023] usb 1-6: device not accepting address 14, error -62
[Fri Nov 10 12:55:19 2023] usb usb1-port6: unable to enumerate USB device
[Fri Nov 10 12:55:21 2023] usb 1-6: new full-speed USB device number 15 using xhci_hcd
[Fri Nov 10 12:55:36 2023] usb 1-6: device descriptor read/64, error -110
[Fri Nov 10 12:55:52 2023] usb 1-6: device descriptor read/64, error -110
[Fri Nov 10 12:55:52 2023] usb 1-6: new full-speed USB device number 16 using xhci_hcd
[Fri Nov 10 12:56:08 2023] usb 1-6: device descriptor read/64, error -110
[Fri Nov 10 12:56:23 2023] usb 1-6: device descriptor read/64, error -110
[Fri Nov 10 12:56:24 2023] usb usb1-port6: attempt power cycle
[Fri Nov 10 12:56:24 2023] usb 1-6: new full-speed USB device number 17 using xhci_hcd
[Fri Nov 10 12:56:29 2023] xhci_hcd 0000:00:14.0: Timeout while waiting for setup device command
[Fri Nov 10 12:56:35 2023] xhci_hcd 0000:00:14.0: Timeout while waiting for setup device command
[Fri Nov 10 12:56:35 2023] usb 1-6: device not accepting address 17, error -62
[Fri Nov 10 12:56:35 2023] usb 1-6: new full-speed USB device number 18 using xhci_hcd
[Fri Nov 10 12:56:40 2023] xhci_hcd 0000:00:14.0: Timeout while waiting for setup device command
[Fri Nov 10 12:56:46 2023] xhci_hcd 0000:00:14.0: Timeout while waiting for setup device command
[Fri Nov 10 12:56:46 2023] usb 1-6: device not accepting address 18, error -62
[Fri Nov 10 12:56:46 2023] usb usb1-port6: unable to enumerate USB device
[Fri Nov 10 12:56:49 2023] usb 1-6: new full-speed USB device number 19 using xhci_hcd
[Fri Nov 10 12:57:04 2023] usb 1-6: device descriptor read/64, error -110
[Fri Nov 10 12:57:20 2023] usb 1-6: device descriptor read/64, error -110
[Fri Nov 10 12:57:20 2023] usb 1-6: new full-speed USB device number 20 using xhci_hcd
[Fri Nov 10 12:57:36 2023] usb 1-6: device descriptor read/64, error -110

When the board worked... I got:

`Nov 04 14:29:49 blue kernel: usb 1-7.4: new full-speed USB device number 14 using xhci_hcd`

`Nov 04 14:29:49 blue kernel: usb 1-7.4: New USB device found, idVendor=2341, idProduct=0266, bcdDevice= 1.01`

`Nov 04 14:29:49 blue kernel: usb 1-7.4: New USB device strings: Mfr=1, Product=2, SerialNumber=3`

`Nov 04 14:29:49 blue kernel: usb 1-7.4: Product: Giga`

`Nov 04 14:29:49 blue kernel: usb 1-7.4: Manufacturer: Arduino`

`Nov 04 14:29:49 blue kernel: usb 1-7.4: SerialNumber: 0038004D3033511034323932`

`Nov 04 14:29:49 blue mtp-probe[85964]: checking bus 1, device 14: "/sys/devices/pci0000:00/0000:00:14.0/usb1/1-7/1-7.4"`

`Nov 04 14:29:49 blue mtp-probe[85964]: bus: 1, device: 14 was not an MTP device`

`Nov 04 14:29:49 blue kernel: cdc_acm 1-7.4:1.0: ttyACM0: USB ACM device`

I have put the board into it's 'flash mode' and I re-flashed it...

Opening DFU capable USB device...
Device ID 0483:df11
Device DFU version 011a
Claiming USB DFU Interface...
Setting Alternate Interface #0 ...
Determining device status...
DFU state(2) = dfuIDLE, status(0) = No error condition is present
DFU mode device DFU version 011a
Device returned transfer size 1024
DfuSe interface name: "Internal Flash   "
Downloading element to address = 0x08000000, size = 118488
Erase   	[=========================] 100%       118488 bytes
Erase    done.
Download	[=========================] 100%       118488 bytes
Download done.

but I still can't access the board via the USB port like I could when I originally got the board. Anything else I can try before I declare the board dead and have to send it back?

No one has any ideas? Was my question confusing?

I would re-flash the bootloader as a first step:

Also maybe a long shot, but I would make sure my udev rules were working.
I had an issue earlier on, don't remember if it was this board or UNO R4,

But solved by doing the fix from:
Fix udev rules on Linux – Arduino Help Center