Amazing, thank you very much. I do not know about any workaround. Plugging the third HDD into another USB port brings the same result. On the other hand, it is possible to use USB flash drives. Probably because they are not UAS devices.
I had been running a three USB HDDs setup to the day the bug hit me. The setup was 2x USB 3 HDD plus 1x HDD in a USB 2 enclosure case. Everything was working. I bought a USB hub and new USB 3 case enclosure. With this setup, I tried to plug all three HDDs into the hub and also two of them into the hub and one to another USB port. I ended up with 100% failure probability. The presence of the hub or all three HDDs being USB 3, something could have triggered the bug. In such a case, using USB 2 or removing a hub could be an extremely ugly work around. If there is not a serious work around, and I have not found any yet, I will wait for the kernel update. -- 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/1663991 Title: Unable to Connect Third HDD via USB Hub Status in Linux: Unknown Status in linux package in Ubuntu: Triaged Bug description: Hello, I am running: (K)Ubuntu 16.10 4.8.0-37-generic #39-Ubuntu SMP Thu Jan 26 02:27:07 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux There has been found a bug in 4.8, which causes kernel call trace when I connect third USB HDD to a USB hub. After the trace, kswapd0 process uses 100% of CPU. The bug has been fixed in 4.10. Is it possible to roll out new kernel packages, please? References: https://ubuntuforums.org/showthread.php?t=2345213 https://bugzilla.kernel.org/show_bug.cgi?id=177551 http://marc.info/?l=linux-mm-commits&m=148650422714993&w=2 To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1663991/+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
