On Tue, 19 Nov 2019 at 14:58, Tom Horsley <horsley1...@gmail.com> wrote:
> On Tue, 19 Nov 2019 14:42:51 -0400 > George N. White III wrote: > > > The EFI message was introduced long ago. Has USB3 > > port usage changed since you upgraded to Fedora 31? > > Nope. The only thing different on both these systems > is fedora 31. At least it only happens every few hours > (or even days), so it isn't constantly changing my > mouse buttons and it is easy to re-run the xinput > commands I have in a script when it does happen.\ > EFI is looking like a red herring. Next on the list of suspects with access to both systems is power management. Have a look at USB Power Management for Linux 5.3 <https://www.kernel.org/doc/html/v5.3/driver-api/usb/power-management.html> (hasn't changed over many kernel versions). A good first step would be to disable USB PM and see if the issue goes away. Although USB PM has been fairly stable, power management changes <https://www.phoronix.com/scan.php?page=news_item&px=Linux-5.5-Ice-Lake-PM-USB> are being made in other parts of the kernel, so collateral damage is a possibility. -- George N. White III
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