Oliver Neukum <oneukum@...> writes: > What exactly is running? Are you seeing spurious events > if you enable debugging. Does it occur if you run with > runtime PM disabled (usbcore.autosuspend=-1 on the kernel > command line)? > > Regards > Oliver Thanks, Oliver, • The running hardware is as described in more detail in the original post. The computer is a HP Pavilion laptop model 17-e049wm, with a A10-5750M quad-core CPU and Radeon HD 8650G display card, 8GB memory, InSyde f.35 BIOS. The only extra hardware is a Logitech wireless mouse with the receiver plugged in to an onboard USB 2.0 port. The problem occurs when I plug a HooToo HT-UH005 (or other) external USB 3.0 hub into one of the onboard USB 3.0 ports. There need not be anything else plugged into the external hubs for the problem to appear. The running software is Ubuntu 14.10, generic kernels, with the fglrx proprietary display drivers. The only user application running besides the windowing system and launcher, is gnome-system-monitor so I can watch which processes are running wild. The kernel 4.0- versions I've been testing are those prebuilt by the Ubuntu team at http://kernel.ubuntu.com/~kernel-ppa/mainline/ . These appear to have debug options turned on at compilation, but at what level I do not know. I do not see any unusual events in dmesg or syslog, or any peculiarities in output from LSUSB. I have logs from the most recent session of testing the problem with 4.0-rc4 if you would like to see them. They are in total about half a megabyte of text so I hesitate to just paste them below. Let me know. • The problem is alleviated by appending "usbcore.autosuspend=-1" to the kernel command line (!!!!) I hesitate to use the word "fixed". Thanks! -Warren ��.n��������+%������w��{.n�����{���)�� jg��� �����ݢj����G���� ���j:+v���w�m������w�������h�����٥
