Re: [ 12/75] USB: EHCI: work around silicon bug in Intels EHCI controllers

Alan Stern
2013-03-19T20:10:12Z

On Tue, 19 Mar 2013, Sven Joachim wrote:

> > In what way is resume broken?
>
> The kernel comes back, but the screen is black. Manually switching VT's
> is possible, and if I type something I can see it on the screen, but
> there is no response and the cursor does not blink. It looks as if the
> VT is not switched backed on resume, and userspace tasks are not
> restarted. Sysrq combinations apparently work, but produce no output.

Are there any other problems? For example, even before you do a
suspend, if you type Alt-SysRq-W do you see any processes listed?

There was another report on the linux-usb mailing list today of this
same patch causing the khubd task to hang. I'm thinking that you might
be facing a similar problem.

Alan Stern