Re: [ 12/75] USB: EHCI: work around silicon bug in Intels EHCIcontrollers
From: Alan Stern
Date: Tue Mar 19 2013 - 17:00:49 EST
On Tue, 19 Mar 2013, Sven Joachim wrote:
> 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?
> > 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.
Just out of curiosity, does the patch posted here:
make any difference?
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