Re: USB hot-plug not working (ASUS TP301UA-C4028T)

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Dear Oliver,

I'm not really sure what happened, but now USB appears to be working perfectly 
well... In the meantime, since my last checks, I simply updated Tumbleweed and 
entered the command below as root (I rebooted twice since then: USB still 
working!).

I didn't find anything relevant in the Tumbleweed updates, only this one is 
related to USB, but the only commit doesn't seem to be fixing anything at 
runtime:

==== usb_modeswitch ====
Subpackages: usb_modeswitch-data

- Avoid a race in make install, which lead to packaging a truncated
  usb_modeswitch_dispatcher script. Fixes boo#998641

But I dont think the command below is still active after a reboot (is it?) and 
it seems just to activate some more debugging, so I really don't understand 
how this happened!

Sorry, this must be a quite frustrating report...

Cheers,
Pierre.

Le lundi 19 septembre 2016, 11:22:52 NZST Oliver Neukum a écrit :
> On Sun, 2016-09-18 at 19:48 +1200, Pierre de Villemereuil wrote:
> > Dear kernel devs,
> > 
> > I'm using openSUSE Tumbleweed (kernel 4.7.2-2-default) on an ASUS Vivobook
> > Flip TP301UA-C4028T, see here for specs:
> > https://www.asus.com/Notebooks/ASUS-VivoBook-Flip-TP301UA/specifications/
> > 
> > Since my install in July, USB hot-plug (a.k.a. plug'n'play) is not
> > working. To make any USB device working (I tested many USB keys, a
> > slideshow remote control and a mouse), it has to be plugged on boot up or
> > wake up from suspend. Using the following command also make the system
> > aware that USB is connected: udevadm trigger
> > 
> > More information can be found on the following thread on the openSUSE
> > forums:
> > https://forums.opensuse.org/showthread.php/519926-No-USB-device-detected
> Basically dmesg should show a hotplug. What happens if you unload and
> reload the xhci_hcd modules?
> 
> And please do
> 
> echo "module xhci_hcd +mpf" > /sys/kernel/debug/dynamic_debug/control
> 
> (as root) and check dmesg again.
> 
> 	Regards
> 		Oliver
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