@mruffell I had the aforementioned USB error almost constantly spamming my syslog. Since I have installed your kernel, it is gone completely. It was not affecting USB hub function in my case, however was quite annoying.
jeremy@730U3E:~$ uname -rv 5.4.0-42-generic #46+TEST1856608v20200805b1-Ubuntu SMP Tue Aug 4 21:56:57 UTC 202 Anyway I'm no-longer able to reproduce the problem so it seems you're onto something here. Have attached output of lshw for your reference. ** Attachment added: "lshw command output" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1856608/+attachment/5401270/+files/lshw.txt -- 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: 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: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1856608/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
