I have an identical error message on Debian Bullseye after kernel
upgrade:
- 5.8.0-3-amd64: works well "enough"
- 5.9.0-1-amd64: experiencing similar symptoms when Dell S2719DC monitor is
connected.
By "similar symptoms", I mean:
- everything that is plugged to USB in the monitor works well.
- everything I've tried to plug into USB slot of the computer is sluggish to
respond: looks like it's not receiving attention.
- the error message is the same: "usb usb2-port2: Cannot enable. Maybe the USB
cable is bad?"
I will try to bisect the kernel at some point. However, the kernel
versions seem to be quite different, so this seems like a similar, but
different issue.
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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:
Incomplete
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:
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