https://bugzilla.kernel.org/show_bug.cgi?id=216282 --- Comment #8 from Alan Stern (stern@xxxxxxxxxxxxxxxxxxx) --- Some of the things you wrote above are not correct. "When you Turn-on the USB3.0 to SATA controller, electrons travel near the speed of light." Not true at all; electric waves travel near the speed of light but the electrons themselves move at only a few centimeters per second (bulk motion). Anyway, the information you reported doesn't indicate what's going wrong. I don't think it's simply a matter of waiting for the disk to spin up; the commands sent by the kernel have a 30-second timeout and that should be plenty of time. A usbmon trace of a non-working connection should help. Before you plug in the USB cable, do: cat /sys/kernel/debug/usb/usbmon/2u >mon.out Then after the drive has been plugged in and the drive has failed to appear, kill the "cat" process with ^C and attach the mon.out file to this bug report. In fact, you might want to do this twice: once where the drive doesn't work, and once where it does work, for comparison. -- You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.
