I've got a *QNAP TS-221* running *Debian 11*, thanks to the modified partition table suggested by Arnaud Mouiche ( https://github.com/amouiche/qnap_mtd_resize_for_bullseye).
Everything works like a charm, except for the *USB3* ports on the rear. Looking at the logs I see no problems but they don't detect any device I connect to them. Any ideas? Many thanks in advance, Luca Paolini -------------- *# uname -a* Linux nas 5.10.0-11-marvell #1 Debian 5.10.92-1 (2022-01-18) armv5tel GNU/Linux *# lsusb* Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub *# dmesg | grep -i usb* [ 16.350546] usbcore: registered new interface driver usbfs [ 16.420379] usbcore: registered new interface driver hub [ 16.471191] usbcore: registered new device driver usb [ 16.511954] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver [ 16.701714] orion-ehci f1050000.ehci: new USB bus registered, assigned bus number 1 [ 16.741020] xhci_hcd 0000:02:00.0: new USB bus registered, assigned bus number 2 [ 16.877256] Modules linked in: xhci_pci(+) xhci_hcd ehci_orion(+) sg ehci_hcd marvell mvmdio mv643xx_eth marvell_cesa orion_wdt libdes watchdog libaes ahci usbcore libahci usb_common nls_base kirkwood_thermal spi_orion evdev gpio_keys fuse configfs nfsd auth_rpcgss nfs_acl lockd grace sunrpc ip_tables x_tables hmac ipv6 autofs4 ext4 crc16 mbcache jbd2 raid10 raid456 libcrc32c crc32c_generic async_raid6_recov async_memcpy async_pq async_xor xor async_tx raid6_pq raid0 multipath linear dm_mod raid1 md_mod sd_mod t10_pi crc_t10dif crct10dif_generic crct10dif_common sata_mv libata scsi_mod rtc_s35390a [ 17.006890] [<bf79ff98>] (xhci_run [xhci_hcd]) from [<bf678190>] (usb_add_hcd+0x43c/0x720 [usbcore]) [ 17.016186] [<bf678190>] (usb_add_hcd [usbcore]) from [<bf6878d8>] (usb_hcd_pci_probe+0x32c/0x39c [usbcore]) [ 17.026134] [<bf6878d8>] (usb_hcd_pci_probe [usbcore]) from [<bf7dc990>] (xhci_pci_probe+0x18/0xf4 [xhci_pci]) [ 17.172206] Modules linked in: xhci_pci(+) xhci_hcd ehci_orion(+) sg ehci_hcd marvell mvmdio mv643xx_eth marvell_cesa orion_wdt libdes watchdog libaes ahci usbcore libahci usb_common nls_base kirkwood_thermal spi_orion evdev gpio_keys fuse configfs nfsd auth_rpcgss nfs_acl lockd grace sunrpc ip_tables x_tables hmac ipv6 autofs4 ext4 crc16 mbcache jbd2 raid10 raid456 libcrc32c crc32c_generic async_raid6_recov async_memcpy async_pq async_xor xor async_tx raid6_pq raid0 multipath linear dm_mod raid1 md_mod sd_mod t10_pi crc_t10dif crct10dif_generic crct10dif_common sata_mv libata scsi_mod rtc_s35390a [ 17.301734] [<bf79ff98>] (xhci_run [xhci_hcd]) from [<bf678190>] (usb_add_hcd+0x43c/0x720 [usbcore]) [ 17.311017] [<bf678190>] (usb_add_hcd [usbcore]) from [<bf6878d8>] (usb_hcd_pci_probe+0x32c/0x39c [usbcore]) [ 17.320961] [<bf6878d8>] (usb_hcd_pci_probe [usbcore]) from [<bf7dc990>] (xhci_pci_probe+0x18/0xf4 [xhci_pci]) [ 17.479078] orion-ehci f1050000.ehci: USB 2.0 started, EHCI 1.00 [ 17.531108] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 5.10 [ 17.539503] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1 [ 17.546815] usb usb1: Product: EHCI Host Controller [ 17.551733] usb usb1: Manufacturer: Linux 5.10.0-11-marvell ehci_hcd [ 17.558137] usb usb1: SerialNumber: f1050000.ehci [ 17.607623] hub 1-0:1.0: USB hub found [ 22.275120] usb usb2: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 5.10 [ 22.283587] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1 [ 22.290930] usb usb2: Product: xHCI Host Controller [ 22.295841] usb usb2: Manufacturer: Linux 5.10.0-11-marvell xhci-hcd [ 22.302247] usb usb2: SerialNumber: 0000:02:00.0 [ 22.333205] hub 2-0:1.0: USB hub found [ 22.373361] xhci_hcd 0000:02:00.0: new USB bus registered, assigned bus number 3 [ 22.391488] xhci_hcd 0000:02:00.0: Host supports USB 3.0 SuperSpeed [ 22.406888] usb usb3: We don't know the algorithms for LPM for this host, disabling LPM. [ 22.426755] usb usb3: New USB device found, idVendor=1d6b, idProduct=0003, bcdDevice= 5.10 [ 22.435228] usb usb3: New USB device strings: Mfr=3, Product=2, SerialNumber=1 [ 22.442498] usb usb3: Product: xHCI Host Controller [ 22.447409] usb usb3: Manufacturer: Linux 5.10.0-11-marvell xhci-hcd [ 22.453799] usb usb3: SerialNumber: 0000:02:00.0 [ 22.505590] hub 3-0:1.0: USB hub found