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

Sven Joachim
2013-03-19T20:28:37Z

On 2013-03-19 21:10 +0100, Alan Stern wrote:

> 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?

No.

> 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.

Maybe, but before the suspend everything seems to be normal.

Cheers,
Sven