https://bugzilla.kernel.org/show_bug.cgi?id=213839 Bug ID: 213839 Summary: XHCI 7 port usb hub does not work correctly Product: Drivers Version: 2.5 Kernel Version: 5.13.4 Hardware: All OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: USB Assignee: drivers_usb@xxxxxxxxxxxxxxxxxxxxxx Reporter: tmezzadra@xxxxxxxxx Regression: No I got an off brand 7-port usb 2.0 which internally has two ICs. first IC connected to the host's usb port exposes 3 USB ports. its 4th usb port has a second identical IC connected which exposes 4 USB ports making it a total of 7 USB 2.0 ports available. Bus 002 Device 065: ID 0a05:7211 Unknown Manufacturer hub Bus 002 Device 064: ID 0a05:7211 Unknown Manufacturer hub As they appear from lsusb the problem is that the first chip works correctly (first 3 USB ports connected to it work). But as soon as I connect a usb device on any of the ports from the second chip. i get the following problems in dmesg: [ 2215.717828] usb 2-1.1: new full-speed USB device number 29 using xhci_hcd [ 2215.808680] usb 2-1.1: New USB device found, idVendor=0a05, idProduct=7211, bcdDevice= 1.00 [ 2215.808685] usb 2-1.1: New USB device strings: Mfr=0, Product=1, SerialNumber=0 [ 2215.808688] usb 2-1.1: Product: USB2.0 HUB [ 2215.809333] hub 2-1.1:1.0: USB hub found [ 2215.809426] hub 2-1.1:1.0: 4 ports detected [ 2216.158062] usb 2-1.1: USB disconnect, device number 29 [ 2216.174608] usb 2-1.1-port3: attempt power cycle [ 2216.561173] usb 2-1.1: new full-speed USB device number 34 using xhci_hcd [ 2216.652346] usb 2-1.1: New USB device found, idVendor=0a05, idProduct=7211, bcdDevice= 1.00 [ 2216.652359] usb 2-1.1: New USB device strings: Mfr=0, Product=1, SerialNumber=0 [ 2216.652365] usb 2-1.1: Product: USB2.0 HUB [ 2216.654327] hub 2-1.1:1.0: USB hub found [ 2216.654480] hub 2-1.1:1.0: 4 ports detected [ 2217.001529] usb 2-1.1: USB disconnect, device number 34 [ 2217.017975] usb 2-1.1-port3: attempt power cycle [ 2217.404536] usb 2-1.1: new full-speed USB device number 39 using xhci_hcd [ 2217.495411] usb 2-1.1: New USB device found, idVendor=0a05, idProduct=7211, bcdDevice= 1.00 [ 2217.495417] usb 2-1.1: New USB device strings: Mfr=0, Product=1, SerialNumber=0 [ 2217.495419] usb 2-1.1: Product: USB2.0 HUB [ 2217.496120] hub 2-1.1:1.0: USB hub found [ 2217.496221] hub 2-1.1:1.0: 4 ports detected [ 2217.844888] usb 2-1.1: USB disconnect, device number 39 [ 2217.861345] usb 2-1.1-port3: attempt power cycle and so on.... This same device at a Windows computer works correctly. Ideas? -- You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.
