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Description
When connecting Android phone to built-in USB ports:
Nov 17 08:50:03 where kernel: xhci-hcd xhci-hcd.4.auto: xHCI Host Controller
Nov 17 08:50:03 where kernel: xhci-hcd xhci-hcd.4.auto: new USB bus registered, assigned bus number 3
Nov 17 08:50:03 where kernel: xhci-hcd xhci-hcd.4.auto: hcc params 0x0238ffcd hci version 0x110 quirks 0x0000808000000010
Nov 17 08:50:03 where kernel: xhci-hcd xhci-hcd.4.auto: irq 130, io mem 0x702280000
Nov 17 08:50:03 where kernel: xhci-hcd xhci-hcd.4.auto: xHCI Host Controller
Nov 17 08:50:03 where kernel: xhci-hcd xhci-hcd.4.auto: new USB bus registered, assigned bus number 4
Nov 17 08:50:03 where kernel: xhci-hcd xhci-hcd.4.auto: Host supports USB 3.1 Enhanced SuperSpeed
Nov 17 08:50:03 where kernel: usb usb3: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 6.16
Nov 17 08:50:03 where kernel: usb usb3: New USB device strings: Mfr=3, Product=2, SerialNumber=1
Nov 17 08:50:03 where kernel: usb usb3: Product: xHCI Host Controller
Nov 17 08:50:03 where kernel: usb usb3: Manufacturer: Linux 6.16.0-1002-asahi-arm xhci-hcd
Nov 17 08:50:03 where kernel: usb usb3: SerialNumber: xhci-hcd.4.auto
Nov 17 08:50:03 where kernel: hub 3-0:1.0: USB hub found
Nov 17 08:50:03 where kernel: hub 3-0:1.0: 1 port detected
Nov 17 08:50:03 where kernel: usb usb4: We don't know the algorithms for LPM for this host, disabling LPM.
Nov 17 08:50:03 where kernel: usb usb4: New USB device found, idVendor=1d6b, idProduct=0003, bcdDevice= 6.16
Nov 17 08:50:03 where kernel: usb usb4: New USB device strings: Mfr=3, Product=2, SerialNumber=1
Nov 17 08:50:03 where kernel: usb usb4: Product: xHCI Host Controller
Nov 17 08:50:03 where kernel: usb usb4: Manufacturer: Linux 6.16.0-1002-asahi-arm xhci-hcd
Nov 17 08:50:03 where kernel: usb usb4: SerialNumber: xhci-hcd.4.auto
Nov 17 08:50:03 where kernel: hub 4-0:1.0: USB hub found
Nov 17 08:50:03 where kernel: hub 4-0:1.0: 1 port detected
Nov 17 08:50:03 where kernel: usb 3-1: new high-speed USB device number 2 using xhci-hcd
Nov 17 08:50:03 where kernel: usb 3-1: New USB device found, idVendor=18d1, idProduct=4ee2, bcdDevice= 6.01
Nov 17 08:50:03 where kernel: usb 3-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
Nov 17 08:50:03 where kernel: usb 3-1: Product: Fairphone 6
Nov 17 08:50:03 where kernel: usb 3-1: Manufacturer: Fairphone
Nov 17 08:50:03 where kernel: usb 3-1: SerialNumber: 935493d7
Nov 17 08:50:04 where kernel: usb 3-1: USB disconnect, device number 2
Nov 17 08:50:06 where kernel: usb 3-1: new high-speed USB device number 3 using xhci-hcd
Nov 17 08:50:06 where kernel: usb 3-1: New USB device found, idVendor=18d1, idProduct=4ee2, bcdDevice= 6.01
Nov 17 08:50:06 where kernel: usb 3-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
Nov 17 08:50:06 where kernel: usb 3-1: Product: Fairphone 6
Nov 17 08:50:06 where kernel: usb 3-1: Manufacturer: Fairphone
Nov 17 08:50:06 where kernel: usb 3-1: SerialNumber: 935493d7
Nov 17 08:50:06 where kernel: usb 3-1: USB disconnect, device number 3
Nov 17 08:50:08 where kernel: usb 3-1: new high-speed USB device number 4 using xhci-hcd
Nov 17 08:50:08 where kernel: usb 3-1: New USB device found, idVendor=18d1, idProduct=4ee2, bcdDevice= 6.01
Nov 17 08:50:08 where kernel: usb 3-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
Nov 17 08:50:08 where kernel: usb 3-1: Product: Fairphone 6
Nov 17 08:50:08 where kernel: usb 3-1: Manufacturer: Fairphone
Nov 17 08:50:08 where kernel: usb 3-1: SerialNumber: 935493d7
Nov 17 08:50:09 where kernel: usb 3-1: USB disconnect, device number 4
Nov 17 08:50:10 where kernel: usb 3-1: new high-speed USB device number 5 using xhci-hcd
Nov 17 08:50:10 where kernel: usb 3-1: New USB device found, idVendor=18d1, idProduct=4ee2, bcdDevice= 6.01
Nov 17 08:50:10 where kernel: usb 3-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
Nov 17 08:50:10 where kernel: usb 3-1: Product: Fairphone 6
Nov 17 08:50:10 where kernel: usb 3-1: Manufacturer: Fairphone
Nov 17 08:50:10 where kernel: usb 3-1: SerialNumber: 935493d7
Nov 17 08:50:11 where kernel: usb 3-1: USB disconnect, device number 5
USB device disconnects after a few tries when connecting an Android phone to built-in USB ports. You can see the device number being incremented each time. It seems to give up after the 4th time, 8 seconds after first connect.
When connecting the same Android phone through a Dell Universal Dock D6000 the device stays connected:
Nov 17 09:02:08 where kernel: usb 1-1.2.1: new high-speed USB device number 12 using xhci-hcd
Nov 17 09:02:08 where kernel: usb 1-1.2.1: New USB device found, idVendor=18d1, idProduct=4ee2, bcdDevice= 6.01
Nov 17 09:02:08 where kernel: usb 1-1.2.1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
Nov 17 09:02:08 where kernel: usb 1-1.2.1: Product: Fairphone 6
Nov 17 09:02:08 where kernel: usb 1-1.2.1: Manufacturer: Fairphone
Nov 17 09:02:08 where kernel: usb 1-1.2.1: SerialNumber: 935493d7
Hardware: Apple MacBook Pro (14-inch, M2 Pro, 2023)
Android device: Fairphone 6
OS: Ubuntu Asahi 24.04, kernel 6.16.0-1002-asahi-arm
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