I am getting the same bug. 21' System76 Gazelle (gaze16), Ubuntu 20.04LTS.
I am getting this bug with the new INC-004 Belkin CONNECT 11-in-1 USB-C
Multiport Hub. Ethernet and HDMI display output are working but USB throws
errors.
-----uname -a--------------------
5.11.0-7620-generic #21~1626191760~20.04~55de9c3~dev-Ubuntu SMP Tue Jul 20
18:02:09 x86_64 x86_64 x86_64 GNU/Linux
-----cat /var/log/syslog | grep kernel------------
Aug 18 13:48:25 exfil kernel: [ 5659.363129] usb 2-3: new SuperSpeed Gen 1 USB
device number 9 using xhci_hcd
Aug 18 13:48:25 exfil kernel: [ 5659.385549] usb 2-3: New USB device found,
idVendor=2109, idProduct=0817, bcdDevice= 3.b4
Aug 18 13:48:25 exfil kernel: [ 5659.385559] usb 2-3: New USB device strings:
Mfr=1, Product=2, SerialNumber=3
Aug 18 13:48:25 exfil kernel: [ 5659.385562] usb 2-3: Product: USB3.0 Hub
Aug 18 13:48:25 exfil kernel: [ 5659.385565] usb 2-3: Manufacturer: VIA Labs,
Inc.
Aug 18 13:48:25 exfil kernel: [ 5659.387948] hub 2-3:1.0: USB hub found
Aug 18 13:48:25 exfil kernel: [ 5659.388502] hub 2-3:1.0: 4 ports detected
Aug 18 13:48:29 exfil kernel: [ 5663.471049] usb usb1-port3: Cannot enable.
Maybe the USB cable is bad?
Aug 18 13:48:29 exfil kernel: [ 5663.471134] usb usb1-port3: attempt power cycle
Aug 18 13:48:33 exfil kernel: [ 5667.906931] usb usb1-port3: Cannot enable.
Maybe the USB cable is bad?
Aug 18 13:48:37 exfil kernel: [ 5672.003075] usb usb1-port3: Cannot enable.
Maybe the USB cable is bad?
Aug 18 13:48:37 exfil kernel: [ 5672.003155] usb usb1-port3: unable to
enumerate USB device
Aug 18 13:48:41 exfil kernel: [ 5676.235101] usb usb1-port3: Cannot enable.
Maybe the USB cable is bad?
Aug 18 13:48:46 exfil kernel: [ 5680.323145] usb usb1-port3: Cannot enable.
Maybe the USB cable is bad?
Aug 18 13:48:46 exfil kernel: [ 5680.323227] usb usb1-port3: attempt power cycle
Aug 18 13:48:50 exfil kernel: [ 5684.731150] usb usb1-port3: Cannot enable.
Maybe the USB cable is bad?
Aug 18 13:48:54 exfil kernel: [ 5688.819059] usb usb1-port3: Cannot enable.
Maybe the USB cable is bad?
Aug 18 13:48:54 exfil kernel: [ 5688.819109] usb usb1-port3: unable to
enumerate USB device
Aug 18 13:48:58 exfil kernel: [ 5693.051196] usb usb1-port3: Cannot enable.
Maybe the USB cable is bad?
Aug 18 13:49:02 exfil kernel: [ 5697.139187] usb usb1-port3: Cannot enable.
Maybe the USB cable is bad?
Aug 18 13:49:02 exfil kernel: [ 5697.139272] usb usb1-port3: attempt power cycle
Aug 18 13:49:07 exfil kernel: [ 5701.551207] usb usb1-port3: Cannot enable.
Maybe the USB cable is bad?
Aug 18 13:49:11 exfil kernel: [ 5705.639242] usb usb1-port3: Cannot enable.
Maybe the USB cable is bad?
Aug 18 13:49:11 exfil kernel: [ 5705.639326] usb usb1-port3: unable to
enumerate USB device
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You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1856608
Title:
[Regression] usb usb2-port2: Cannot enable. Maybe the USB cable is
bad?
Status in linux package in Ubuntu:
Incomplete
Status in linux source package in Bionic:
Fix Released
Status in linux source package in Disco:
Fix Released
Status in linux source package in Eoan:
Fix Released
Status in linux source package in Focal:
Confirmed
Bug description:
This appears to be a regression between 4.15.0-70.79 and 4.15.0-72.81.
This bug was fixed by simply reverting the offending change. Bug 1859873
tracks root causing the issue and reapplying the change w/ any necessary fixes.
[Impact]
USB port unusable and boot time takes ~5 minutes longer to complete.
Kernel emits messages like:
usb usb2-port2: Cannot enable. Maybe the USB cable is bad?
[Test Case]
dmesg | grep "Cannot enable"
[Fix]
[Regression Risk]
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1856608/+subscriptions
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