Please use Reply-To-All so that your messages get sent to the mailing list as well as to me. On Thu, May 05, 2022 at 11:32:14PM +0100, James Dutton wrote: > On Thu, 5 May 2022 at 15:16, Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> wrote: > > > > > There is no way to know what is going on unless you provide a lot more > > information. The dmesg log showing what happens during one of these > > disconnect/reconnect events would be a good start (although it probably > > won't be enough). > > > > Alan Stern > > Hi Alan, > > Here are some log messages. I suspect the storage device is going into > some sort of sleep mode, and the kernel does not seem to be able to > wake it up again. > The device is a USB to NVME adapter. Using the chip: Realtek RTL9210 > The log is perfectly normal up until the 2nd line below onwards: ... That log isn't sufficient. It would be a big help if instead of sending your kernel log file, you send the output of the "dmesg" program. And don't send just the part starting where the problem begins; we need to see what happened before that as well. In addition, it would help if you enable USB debugging before the problem occurs: echo 'module usbcore =p' >/sys/kernel/debug/dynamic_debug/control Alan Stern
