On Apr 18, 2014, at 8:10 PM, Peter Wemm <peter@wemm.org> wrote:
> On Fri, Apr 18, 2014 at 6:18 PM, Chris Nehren
> <cnehren+freebsd-stable@pobox.com> wrote:
>> On 2014/04/18, 11:36, Greg Rivers wrote:
>>>
>>> The new vt system console looks really nice. But on hosts that
>>> have geli encrypted devices that prompt for the passphrase at
>>> boot, no keyboard input reaches geli. The keyboard doesn't
>>> appear to be dead, as the caps-lock and num-lock keys toggle;
>>> geli just doesn't receive any input. This is on 10-STABLE amd64
>>> built from yesterday's sources. "hw.vga.textmode=1" doesn't make
>>> any difference.
>>>
>>> Has anyone else encountered this?
>>>
>>
>> Yes, I have, on my FreeBSD workstation with a USB keyboard. It's running
>> FreeBSD 10 with geli-encrypted ZFS root. This happened before I updated to
>> vt, though. I managed to work around the problem, surprisingly enough, by
>> mashing the keyboard when the system boots as soon as I see bold white
>> kernel text. Then, when prompted for the passphrase (after all the USB
>> devices finish probing / attaching), I hit enter to clear the buffer and
>> then am able to enter the passphrase correctly.
>>
>> I'll be filing a PR for this, probably on Monday, should I not be able to
>> find one that's similar.
>>
>> --
>> Chris Nehren
>
> For what it's worth, I don't think this is specific to vt. You can
> sometimes get the same behavior when you hit the mountroot prompt.
> Some of the machines in the freebsd cluster will accept input at a
> mountroot prompt, the others we have to power cycle and fix
> vfs.root.mountfrom. vt isn't involved. I don't know what the
> variable is.
>
> I once suspected it is some combination of ddb/kdb presence, and/or
> serial console / multiconsole mode but I don't think that holds up.
I fixed this bug on SERIAL consoles by making the grab/ungrab function
shift the serial port from interrupt driven processing to polled processing.
Maybe a similar change is now needed for atkbd?
Warner
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