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From: Alan McKinnon <alan.mckinnon@gmail.com>
To: gentoo-user@lists.gentoo.org
Subject: Re: [gentoo-user] Re: [~amd64] Keyboard stops working several times/day
Date: Sun, 16 Aug 2015 21:48:04 +0200	[thread overview]
Message-ID: <55D0E8F4.7010306@gmail.com> (raw)
In-Reply-To: <20150816124249.0bb2ae3c@a6>

On 16/08/2015 21:42, walt wrote:
> On Sun, 16 Aug 2015 18:58:27 +0200
> Alan McKinnon <alan.mckinnon@gmail.com> wrote:
> 
>> On 16/08/2015 18:45, walt wrote:
>>> I've been seeing this keyboard problem for the past few weeks:
>>> after running some command from a bash prompt (haven't tried zsh
>>> yet) the keyboard stops working.  Almost like somebody unplugged
>>> the keyboard from its usb port (except that the LED on the keyboard
>>> stays lit so I know the power is still on).
>>>
>>> There are no error messages in journalctl or in /var/log/Xorg.0.log
>>>
>>> I don't know how to change to a console without using a ctrl-alt-Fn
>>> keystroke from the keyboard (anyone know if it's possible?).
>>>
>>> When I unplug the keyboard from the usb port I can see the kernel
>>> recognize the unplug event, which makes me think that it's not a
>>> kernel/usb bug or a broken wire in the keyboard cable.
>>>
>>> When I re-plug the keyboard into a usb port the keyboard immediately
>>> starts working normally again until the next time I happen to
>>> trigger the problem by running some black-magical command from a
>>> command prompt.  There is no particular command that causes it--it
>>> can be any arbitrary command AFAICT.
>>>
>>> Just one weird example:  I can be typing a URL in a web browser
>>> window when a bash command finishes running in a terminal window
>>> and the keyboard stops working in the middle of my typing :(
>>>
>>> Any debugging suggestions would be most welcome.  
>>
>>
>> First step (more to half the problem space than anything else):
>>
>> Does the same happen if you use another keyboard?
> 
> I agree with your assessment -- and I will buy another usb keyboard
> tomorrow because I'm using the only one I have and this machine has no
> ps/2 ports.  Never thought I'd miss the ps/2 ports til now :)

I kind of assumed you'd have lots of spare keyboards lying around and
had already done the test :-)

I myself have 4 spares lying around my home study, all functional, and
I'm totally at a loss to explain why so many!

Anyway, back on topic. I recall something similar happening to me,
perhaps a year ago or longer. I tried to debug it and gave up, then one
day it was no longer happening. I assumed it was a fixed kernel bug then
promptly forgot all about it.

While you are waiting on a new keyboard, do you have the same bug on
different kernels?


-- 
Alan McKinnon
alan.mckinnon@gmail.com



  reply	other threads:[~2015-08-16 19:48 UTC|newest]

Thread overview: 74+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-08-16 16:45 [gentoo-user] [~amd64] Keyboard stops working several times/day walt
2015-08-16 16:58 ` Alan McKinnon
2015-08-16 19:42   ` [gentoo-user] " walt
2015-08-16 19:48     ` Alan McKinnon [this message]
2015-08-16 21:07       ` walt
2015-08-16 21:34         ` Dale
2015-08-16 22:39           ` walt
2015-08-17  5:53             ` Dale
2015-08-18  1:44               ` [gentoo-user] Re: [WAS: keyboard stops working] Recent kernels block the loading of non-GPL kernel modules walt
2015-08-18 20:49                 ` Dale
2015-08-18 23:55                   ` walt
2015-08-19  0:39                     ` Dale
2015-08-19  3:12                       ` Michael Orlitzky
2015-08-19 11:00                         ` Rich Freeman
2015-08-19 19:06                           ` Fernando Rodriguez
2015-08-19 21:28                             ` Rich Freeman
2015-08-19 22:09                               ` Michael Orlitzky
2015-08-19 22:21                                 ` Rich Freeman
2015-08-19 23:14                                   ` Michael Orlitzky
2015-08-19 23:40                                     ` Fernando Rodriguez
2015-08-20  0:04                                       ` Michael Orlitzky
2015-08-20  0:25                                         ` Michel Catudal
2015-08-20  0:38                                           ` Dale
2015-08-20  0:37                                         ` Fernando Rodriguez
2015-08-20  0:48                                           ` Michael Orlitzky
2015-08-20  1:11                                             ` Michel Catudal
2015-08-20  1:20                                             ` Rich Freeman
2015-08-20  2:37                                               ` Fernando Rodriguez
2015-08-20  2:53                                                 ` Rich Freeman
2015-08-20  7:24                                                   ` Fernando Rodriguez
2015-08-20 11:48                                                     ` Rich Freeman
2015-08-20  1:13                                         ` Rich Freeman
2015-08-20  8:40                                           ` Marc Joliet
2015-08-20 11:51                                             ` Rich Freeman
2015-08-20  1:09                                       ` Rich Freeman
2015-08-20  1:41                                         ` Dale
2015-08-20  2:25                                         ` Fernando Rodriguez
2015-08-20  2:43                                           ` Rich Freeman
2015-08-20  3:02                                             ` Fernando Rodriguez
2015-08-19 23:57                                     ` Michel Catudal
2015-08-20  1:05                                     ` Rich Freeman
2015-08-20  1:12                                       ` Michael Orlitzky
2015-08-20  1:24                                         ` Rich Freeman
2015-08-20  1:35                                           ` Michael Orlitzky
2015-08-20  2:39                                             ` Rich Freeman
2015-08-20  3:22                                               ` Michael Orlitzky
2015-08-20 12:00                                                 ` Rich Freeman
2015-08-19 23:30                               ` Fernando Rodriguez
2015-08-20  1:06                                 ` Rich Freeman
2015-08-19  1:54                   ` Rich Freeman
2015-08-19  3:20                     ` Michael Orlitzky
2015-08-19 11:12                       ` Rich Freeman
2015-08-19  7:57                     ` Marc Joliet
2015-08-19  8:06                       ` J. Roeleveld
2015-08-19  9:19                   ` Jeremi Piotrowski
2015-08-19 11:06                     ` Rich Freeman
2015-08-19 12:31                       ` Jeremi Piotrowski
2015-08-19 13:17                         ` Rich Freeman
2015-08-19 22:31                           ` Jeremi Piotrowski
2015-08-20  1:01                             ` Rich Freeman
2015-08-20  1:29                             ` Rich Freeman
2015-08-16 23:27         ` [gentoo-user] Re: [~amd64] Keyboard stops working several times/day Michel Catudal
2015-08-17  1:43           ` walt
2015-08-17  2:37             ` Michel Catudal
2015-08-17  7:17           ` netfab
2015-08-17 18:28             ` mcatudal
2015-08-18  1:13             ` Michel Catudal
2015-08-18  8:04               ` netfab
2015-08-17 16:51 ` [gentoo-user] " Heiko Baums
2015-08-18  2:04   ` [gentoo-user] " walt
2015-08-18 18:38     ` Heiko Baums
2015-08-18 23:40       ` walt
2015-08-17 21:21 ` [gentoo-user] " Marc Joliet
2015-08-18  1:56   ` [gentoo-user] " walt

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