ubuntu linux-image-4.4.0-31-generic cpu stall vbox 5.1

[JohnVeness]

Yep, 4.4.0-31 kernel works for me when USB controller in Virtualbox settings set to USB 2.0 instead of 3.0.

[taz]

seems they have a suspect now,
testing kernel (without the change that breaks it) in
https://bugs.launchpad.net/ubuntu/+sour ... ug/1604058

--
L

[taz]

direct link to kernel:
http://kernel.ubuntu.com/~jsalisbury/lp1604058/

can someone test with usb 3.0 and above kernel?

thnx
L

[taz]

fwiw I tested that kernel and it is indeed that change, so I guess we can close this as solved, since now it's Ubuntus turn to get a fix out

[JohnVeness]

The jsalisbury kernel fixed this problem for me, too.

[taz]

fwiw - http://kernel.ubuntu.com/~jsalisbury/lp1604058/ now contains kernel WITH a fix (rather than reverted change for xhci that broke it)

[JohnVeness]

fwiw - http://kernel.ubuntu.com/~jsalisbury/lp1604058/ now contains kernel WITH a fix (rather than reverted change for xhci that broke it)

That new kernel doesn't boot for me, with USB 3.0 enabled in vbox.

[taz]

Kamal added a patch with a fix to the LP bug
http://people.canonical.com/~kamal/lp1604058/

this should be a bootable kernel, he asks people if they can test usb 3.0 functionality with this patch

--
L

[dba_chicken]

Thanks Michael

I've the same problem with my current Kubuntu 16.04 guest but to switch
back to USB 2.0 is at most a workaround. I don't know whether the problem
is caused by VBox or the Linux kernel but I went back to 5.0.26 to avoid
that problem. I've already thought 'bout these kinds of starting problems in
a new major release therefore I created a snapshot right before switching
to 5.1

Hope this issue will be fixed somehow. Best Regards,
Martin

I have the same problem here so I created a serial device in my
Virtualbox-settings and logged the complete startup of the linux-kernel to the file attached.
Because the problem seems to be connected to xhci I disabled USB 3.0 and enabled USB 2.0.
With USB 2.0 the kernel boots, with USB 3.0 it does not.
I hope this helps finding the cause of the problem. Michael.

[taz]

cross post:
Matthias Metzger (macellarius) wrote 15 hours ago: #11

Hi,

I tested your test kernels and everything is working: no boot hang and USB 3.0 hdds are working with the expected speed.


- so above kernel from Kamal is working and basically be in next kernel update

[JohnVeness]

Now fixed in official release kernel 4.4.0-36.