All of lore.kernel.org
 help / color / mirror / Atom feed
* keyboard problems on HP Pavilion ZE4200
       [not found] <3277220fa08b0d9b83dd7598e6f360d5@192.168.1.20>
@ 2009-06-09 20:02 ` Pavel Machek
  2009-06-09 22:47   ` Jiri Kosina
  0 siblings, 1 reply; 3+ messages in thread
From: Pavel Machek @ 2009-06-09 20:02 UTC (permalink / raw)
  To: dda, kernel list; +Cc: jikos

Hi!

> I write to you on behalf of Bruno Ducrot, you seem to have worked  
> together on related things
> I have a HP Pavilion ze4200, that have a very nasty  
> bug

Well, my work on input was  little and long time ago.

> Under linux (ubuntu 9) some keys are "pressed" even when I'm not  
> touching the keyboard, so for example it launches the tool for the  
> printscreen hundreds of times and then the machine is not usable  
> anymore...

Which kernel? Does it happen on 2.6.30? Does it happen on console?
Which keys?
								Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

^ permalink raw reply	[flat|nested] 3+ messages in thread

* Re: keyboard problems on HP Pavilion ZE4200
  2009-06-09 20:02 ` keyboard problems on HP Pavilion ZE4200 Pavel Machek
@ 2009-06-09 22:47   ` Jiri Kosina
       [not found]     ` <2558ACFA-84E2-4948-B371-D4F9606C0B15@awalis.com>
  0 siblings, 1 reply; 3+ messages in thread
From: Jiri Kosina @ 2009-06-09 22:47 UTC (permalink / raw)
  To: Pavel Machek; +Cc: dda, kernel list

On Tue, 9 Jun 2009, Pavel Machek wrote:

> > Under linux (ubuntu 9) some keys are "pressed" even when I'm not 
> > touching the keyboard, so for example it launches the tool for the 
> > printscreen hundreds of times and then the machine is not usable 
> > anymore...
> Which kernel? Does it happen on 2.6.30? Does it happen on console?
> Which keys?

Also output of 'evtest' on the corresponding device in /dev/input/event? 
from the time the key(s) get stuck will be helpful.

Is the keyboard in question PS2-conntected or USB-connected?

-- 
Jiri Kosina
SUSE Labs

^ permalink raw reply	[flat|nested] 3+ messages in thread

* Re: keyboard problems on HP Pavilion ZE4200
       [not found]     ` <2558ACFA-84E2-4948-B371-D4F9606C0B15@awalis.com>
@ 2009-06-16  8:48       ` Jiri Kosina
  0 siblings, 0 replies; 3+ messages in thread
From: Jiri Kosina @ 2009-06-16  8:48 UTC (permalink / raw)
  To: Bringer Didier; +Cc: Pavel Machek, linux-kernel


[ restored CC list ]

On Thu, 11 Jun 2009, Bringer Didier wrote:

> > > >Under linux (ubuntu 9) some keys are "pressed" even when I'm not
> > > >touching the keyboard, so for example it launches the tool for the
> > > >printscreen hundreds of times and then the machine is not usable
> > > >anymore...
> > >Which kernel? Does it happen on 2.6.30? Does it happen on console?
> > >Which keys?
> >
> >Also output of 'evtest' on the corresponding device in /dev/input/event?
> >from the time the key(s) get stuck will be helpful.
> >
> >Is the keyboard in question PS2-conntected or USB-connected?
> First of all, thank you for your answer
> 
> Kernel : Linux champ 2.6.28-11-generic #42-Ubuntu SMP Fri Apr 17 01:57:59 UTC
> 2009 i686 GNU/Linux
> 
> Output of evtest /dev/input/event4 while the bug appears

> Event: time 1244751563.258790, -------------- Report Sync ------------
>Event: time 1244751563.349861, type 4 (Misc), code 4 (ScanCode), value 54
> Event: time 1244751563.349897, type 1 (Key), code 99 (SysRq), value 1
> Event: time 1244751563.349900, -------------- Report Sync ------------
> Event: time 1244751563.370076, type 4 (Misc), code 4 (ScanCode), value 38
> Event: time 1244751563.370107, type 1 (Key), code 56 (LeftAlt), value 0
> Event: time 1244751563.370109, -------------- Report Sync ------------
> Event: time 1244751563.401550, type 4 (Misc), code 4 (ScanCode), value 0f
> Event: time 1244751563.401583, type 1 (Key), code 15 (Tab), value 0
> Event: time 1244751563.401586, -------------- Report Sync ------------
> Event: time 1244751563.599697, type 4 (Misc), code 4 (ScanCode), value 54
> Event: time 1244751563.599731, type 1 (Key), code 99 (SysRq), value 2

So forever-repeating sysrq/printscreen is really coming out of the evdev 
input node.

Could you please boot you kernel with i8042.debug kernel parameter and 
send the output from the time the bug triggers? This way we'll see whether 
the repeated key really arrives from PS/2.

> I will try with a 2.6.30 soon

Do you know about any kernel version where this bug didn't trigger?

> Weirdly the bug doesn't seem to work when I use KDE as windowsmanager... 
> Under gnome it is every 20 seconds that it happens. I cannot say that 
> the bug really doesn't appear under kde but I cannot see effects of it

You can check the evtest output when running KDE, if the repeated key 
appears there as well.

-- 
Jiri Kosina
SUSE Labs

^ permalink raw reply	[flat|nested] 3+ messages in thread

end of thread, other threads:[~2009-06-16  8:48 UTC | newest]

Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
     [not found] <3277220fa08b0d9b83dd7598e6f360d5@192.168.1.20>
2009-06-09 20:02 ` keyboard problems on HP Pavilion ZE4200 Pavel Machek
2009-06-09 22:47   ` Jiri Kosina
     [not found]     ` <2558ACFA-84E2-4948-B371-D4F9606C0B15@awalis.com>
2009-06-16  8:48       ` Jiri Kosina

This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.