I recently upgraded to 22.04, and have since experienced extremely laggy USB ports, to the point where I lose keystrokes and much/most of the mouse movement input. I am using a USB switch primarily, as this is a server in a rack around the corner.
The baffling thing is that I occasionally get perfect connectivity after physically unplugging/replugging the switch on some ports, but this is not entirely repeatable (otherwise I would ignore it and move on).
I'm looking for some insight on how I would begin to diagnose this?
I have tried:
- Switching between Wayland and Xorg
- Using GNOME vs. Gnome Flashback
tail -f xorg.0.log- looking for alternate display drivers (on-board Intel, no proprietary drivers)
- a couple other random things I no longer remember from here & around the internet.
USB feels like a little bit of a black box to me, and I was hoping to find out if there's any good way to peek under the hood? powertop was pointed out in the comments, and I will take a look at that. The dmesg suggestion has been helpful, it gave me some ideas.
Hardware Info:
lscpu snippet:
Model name: Intel(R) Core(TM) i7-3770K CPU @ 3.50GHz
lspci snippet:
00:00.0 Host bridge: Intel Corporation Xeon E3-1200 v2/3rd Gen Core processor DRAM Controller (rev 09)
00:02.0 VGA compatible controller: Intel Corporation IvyBridge GT2 [HD Graphics 4000] (rev 09)
00:14.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset Family USB xHCI Host Controller (rev 04)
00:16.0 Communication controller: Intel Corporation 7 Series/C216 Chipset Family MEI Controller #1 (rev 04)
00:19.0 Ethernet controller: Intel Corporation 82579V Gigabit Network Connection (rev 04)
00:1a.0 USB controller: Intel Corporation 7 Series/C216 Chipset Family USB Enhanced Host Controller #2 (rev 04)
00:1d.0 USB controller: Intel Corporation 7 Series/C216 Chipset Family USB Enhanced Host Controller #1 (rev 04)
An example of dmesg info:
[240530.609005] usb 3-4: USB disconnect, device number 34
[240530.609114] usb 3-4: clear tt 4 (8000) error -71
[240530.609186] usb 3-4-port4: cannot reset (err = -71)
[240530.609516] usb 3-4-port4: attempt power cycle
[240530.609524] usb 3-4-port4: failed to disable port power
[240530.612236] usb 3-4.1: USB disconnect, device number 35
[240530.884271] usb 3-4.2: USB disconnect, device number 36
[240531.791908] usb 3-4: new high-speed USB device number 41 using xhci_hcd
[240531.955365] usb 3-4: New USB device found, idVendor=0bda, idProduct=5411, bcdDevice= 1.44
[240531.955375] usb 3-4: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[240531.955378] usb 3-4: Product: 4-Port USB 2.0 Hub
[240531.955380] usb 3-4: Manufacturer: Generic
[240531.956844] hub 3-4:1.0: USB hub found
[240531.957869] hub 3-4:1.0: 4 ports detected
[240532.247872] usb 3-4.1: new low-speed USB device number 42 using xhci_hcd
[240532.354792] usb 3-4.1: New USB device found, idVendor=045e, idProduct=07f8, bcdDevice= 3.00
[240532.354803] usb 3-4.1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[240532.354806] usb 3-4.1: Product: Wired Keyboard 600
[240532.354808] usb 3-4.1: Manufacturer: Microsoft
[240532.363793] input: Microsoft Wired Keyboard 600 as /devices/pci0000:00/0000:00:14.0/usb3/3-4/3-4.1/3-4.1:1.0/0003:045E:07F8.004C/input/input83
[240532.420569] hid-generic 0003:045E:07F8.004C: input,hidraw0: USB HID v1.11 Keyboard [Microsoft Wired Keyboard 600] on usb-0000:00:14.0-4.1/input0
[240532.423247] input: Microsoft Wired Keyboard 600 Consumer Control as /devices/pci0000:00/0000:00:14.0/usb3/3-4/3-4.1/3-4.1:1.1/0003:045E:07F8.004D/input/input84
[240532.480188] input: Microsoft Wired Keyboard 600 System Control as /devices/pci0000:00/0000:00:14.0/usb3/3-4/3-4.1/3-4.1:1.1/0003:045E:07F8.004D/input/input85
[240532.480508] hid-generic 0003:045E:07F8.004D: input,hidraw1: USB HID v1.11 Device [Microsoft Wired Keyboard 600] on usb-0000:00:14.0-4.1/input1
[240532.559907] usb 3-4.2: new full-speed USB device number 43 using xhci_hcd
[240532.663141] usb 3-4.2: New USB device found, idVendor=046d, idProduct=c52b, bcdDevice=12.11
[240532.663146] usb 3-4.2: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[240532.663148] usb 3-4.2: Product: USB Receiver
[240532.663149] usb 3-4.2: Manufacturer: Logitech
[240532.675394] logitech-djreceiver 0003:046D:C52B.0050: hiddev0,hidraw2: USB HID v1.11 Device [Logitech USB Receiver] on usb-0000:00:14.0-4.2/input2
[240532.879902] usb 3-4.4: new full-speed USB device number 44 using xhci_hcd
[240532.920833] logitech-hidpp-device 0003:046D:4082.0051: HID++ 4.5 device connected.
[240532.960802] logitech-hidpp-device 0003:046D:4082.0051: HID++ 4.5 device connected.
[240533.182857] logitech-hidpp-device 0003:046D:4082.0051: hidpp20_batterylevel_get_battery_info: received protocol error 0x06
[240533.484976] input: Logitech MX Master 3 as /devices/pci0000:00/0000:00:14.0/usb3/3-4/3-4.2/3-4.2:1.2/0003:046D:C52B.0050/0003:046D:4082.0051/input/input86
[240533.487451] logitech-hidpp-device 0003:046D:4082.0051: input,hidraw3: USB HID v1.11 Keyboard [Logitech MX Master 3] on usb-0000:00:14.0-4.2/input2:1
[240533.504048] input: Logitech MX Ergo as /devices/pci0000:00/0000:00:14.0/usb3/3-4/3-4.2/3-4.2:1.2/0003:046D:C52B.0050/0003:046D:406F.0052/input/input87
[240533.516867] logitech-hidpp-device 0003:046D:406F.0052: input,hidraw4: USB HID v1.11 Keyboard [Logitech MX Ergo] on usb-0000:00:14.0-4.2/input2:2
[240533.530934] input: Logitech ERGO K860 as /devices/pci0000:00/0000:00:14.0/usb3/3-4/3-4.2/3-4.2:1.2/0003:046D:C52B.0050/0003:046D:4088.0053/input/input88
[240533.533914] logitech-hidpp-device 0003:046D:4088.0053: input,hidraw5: USB HID v1.11 Keyboard [Logitech ERGO K860] on usb-0000:00:14.0-4.2/input2:3
[240537.854516] usb 3-4: USB disconnect, device number 41
[240537.855133] usb 3-4-port4: attempt power cycle
[240537.855140] usb 3-4-port4: failed to disable port power
[240537.855422] usb 3-4.1: USB disconnect, device number 42
[240538.117213] usb 3-4.2: USB disconnect, device number 43
