linux-kernel - Re: weird keyboard issue (ps/2 port?) 3.9.x/3.10.x?

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Date:	Tue, 27 Aug 2013 17:52:15 +0200
From:	Udo van den Heuvel <udovdh@...all.nl>
To:	Peter Hurley <peter@...leysoftware.com>
CC:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Jiri Slaby <jslaby@...e.cz>,
	Greg KH <gregkh@...uxfoundation.org>
Subject: Re: weird keyboard issue (ps/2 port?) 3.9.x/3.10.x?

On 2013-08-27 17:40, Peter Hurley wrote:
> [ +cc Greg KH, Jiri S ]
> 
> On 08/26/2013 01:53 AM, Udo van den Heuvel wrote:
>> Hello,
>>
>> I am stuck with a weird keyboard related issue:
>> Since a few weeks I see loads of ^@^@^@^@^@^@ appear on the text console
[...]
>> What could this be?
>> Is it really a software issue?
>> If so: how could I help fix this?
> 
> What changed 'a few weeks' ago when this problem started?

I upgraded to Fedora 19 (from F17) and rebuilt kernels.
I rebuilt some kernels, found the fix to the encrypted swap activation
issue, etc.
I'd have to look up the date, but around july 14th?
Due to unfortunate changes in systemd I could not boot older kernels
anymore in F19 and needed that swap fix (remove /sbin/hotplug helper
definition). 3.9.9 is oldest one that boots but shows the issue(s).
I am now rebuilding 3.8.5 to see if that makes a difference for any of
these issues.

> I noticed your USB post as well. Did that problem start at the same time
> with the same change?

First alone the USB issue was present, later the PS/2 issue started but
(stupidly) I failed to note the kernel version. (or date) (but it was
post F19 migration)

I did not find any stuff in /var/log/messages that correlates with the
'ps/2' issue. (ps/2 as that is the interface of my keyboard but the
source could be elsewhere)
I will retest if the ps/2 issue is also present without keyboard connected.
I will see if the ~2 day delay from boot is consistent with the issue
occurring.

Udo
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