On Wed, Feb 08, 2017 at 12:16:44PM +0100, Paul Menzel wrote: > Dear Linux folks, > > > On the server Dell PowerEdge R730 with firmware 2.3.4, and Linux 4.9.2, the > connected USB mouse disconnects and connects again periodically. This can be > reproduced with two different (Logitech) mice. > > ``` > $ more /proc/version > Linux version 4.9.0-1-amd64 (debian-kernel@xxxxxxxxxxxxxxxx) (gcc version > 6.3.0 20161229 (Debian 6.3.0-2) ) #1 SMP Debian 4.9.2-2 (2017-01-12) > $ journalctl -o short-precise -k -f > […] > Feb 08 12:00:16.193817 poweredger730 kernel: usb 3-2: USB disconnect, device > number 84 Looks like a hardware issue, the kernel can not cause a device to disconnect itself. Especially as this happens with two different mice, you might want to see if there's something wrong with that port. good luck! greg k-h -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html