Re: kernel: uhub_reattach_port: giving up port reset - device vanished

On 11/23/18 6:51 PM, tech-lists wrote:
> Hi,
> 
> On a 12.0-BETA2 system, am seeing lots of this in /var/log/messages:
> 
> uhub_reattach_port: giving up port reset - device vanished
> uhub_reattach_port: giving up port reset - device vanished
> uhub_reattach_port: giving up port reset - device vanished
> 
> last message repeated 496 times
> 
> There's only two things usb on this machine, a usb3 pci card (which has
> nothing plugged into it) and a usb2 wireless key plugged into the usb
> system built into the motherboard. It's detected as run0. The device
> works fine, doesn't drop packets.
> 
> How can I debug this? Should I upgrade to 12-PRERELEASE (or whatever the
> latest is) first?

Hi,

There hasn't been any USB changes in this area. Likely you have a broken 
or unsupported USB device, which doesn't enumerate properly. I see this 
on my computer with a USB bluetooth device, which because it doesn't 
receive valid firmware at first boot, becomes in-accessible. Maybe you 
can disable some such USB devices in the BIOS.

--HPS

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