Am Donnerstag, den 09.02.2017, 17:30 +0100 schrieb Paul Menzel: > Dear Johan, > > > On 02/08/17 17:54, Johan Hovold wrote: > > > > On Wed, Feb 08, 2017 at 05:41:33PM +0100, Paul Menzel wrote: > > > > > > On 02/08/17 16:50, Johan Hovold wrote: > > > > > > > > On Wed, Feb 08, 2017 at 04:15:02PM +0100, Paul Menzel wrote: > > > > > > > > > > On 02/08/17 14:02, Greg KH wrote: > > > > > > > > > > > > On Wed, Feb 08, 2017 at 12:16:44PM +0100, Paul Menzel wrote: > > > > > > > > > > > > > > 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. > > > > > > > > > > With three devices of the Logitech model 046d:c077 (Logitech, Inc. M105 > > > > > Optical Mouse) the problem could be reproduced on each USB port. > > > > > > > > Have you tried enabling the always-poll HID-quirk, which is needed for > > > > certain devices to prevent issues like this? > > > > > > > > See commit bfe3c873e978 ("HID: usbhid: enable always-poll quirk for Elan > > > > Touchscreen") for an example. > > > > > > No, I have not. Is this run-time configurable, or do I need to build the > > > Linux kernel myself. > > > > You'd need to rebuild the kernel. Hi, sorry to reheat an old thread, but did anything come out of this? Do we need to add a quirk? Regards Oliver -- 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