Re: tty session leader issue (was Re: 2.6.25.3: su gets stuck for root)

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From: Tim Connors
Date: Sunday, July 6, 2008 - 7:08 am

On Wed, 2 Jul 2008, Joe Peterson wrote:

...

In fact, in various laptops (Eeeepc, dell inspiron 1520, Dell inspiron
4000), I've got various tty screwups that have been introduced since
circa 2.6.19.

The 6 year old inspiron 4000 gets stuck at stty erase ^? .  Randomly, but
most of the time.

All of my machines exhibit the ctrl-C being slower than ctrl-Z discussed
elswhere (I've almost developed a habit of typing ctrl-Z kill %1 <RET>).
Although even ctrl-Z recently has been reluctant to always work.  I wonder
if this is the cause of dpkg recently not responding to ctrl-Z's? (debian
bug #486222).  dpkg does respond to kill -STOP

ctrl-s doesn't always work anymore.  Again, what prompted me to write this
email, was I couldn't pause dpkg.  It's particularly unreliable at
stopping scrolling messages at bootup, and if I press it at the wrong time
at bootup (not a specific place - it can be starting up any number of
scripts), something deadlocks and won't resume upon a ctrl-q.
alt-sysrq-k is enough to kill whatever has deadlocked.  I have a feeling,
but don't want to test on this system right now, that pressing scroll-lock
as opposed to ctrl-q once unlocked such a stuck display.

In summary, something in tty is certainly screwed.  Does anyone see a
connection between all of these?

-- 
TimC
Electromagnetic pulse received (core dumped)
--
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Messages in current thread:
Re: 2.6.25.3: su gets stuck for root, Joe Peterson, (Sun Jun 1, 6:31 pm)
Re: 2.6.25.3: su gets stuck for root, Harald Dunkel, (Sun Jun 1, 10:12 pm)
Re: 2.6.25.3: su gets stuck for root, Willy Tarreau, (Sun Jun 1, 10:32 pm)
Re: 2.6.25.3: su gets stuck for root, Joe Peterson, (Sun Jun 1, 10:42 pm)
Re: 2.6.25.3: su gets stuck for root, Joe Peterson, (Sun Jun 1, 10:55 pm)
Re: 2.6.25.3: su gets stuck for root, Alan Cox, (Mon Jun 2, 1:10 am)
Re: 2.6.25.3: su gets stuck for root, David Newall, (Mon Jun 2, 2:01 am)
Re: 2.6.25.3: su gets stuck for root, Alan Cox, (Mon Jun 2, 2:20 am)
Re: 2.6.25.3: su gets stuck for root, Vegard Nossum, (Mon Jun 2, 3:16 am)
Re: 2.6.25.3: su gets stuck for root, Vegard Nossum, (Mon Jun 2, 3:39 am)
Re: 2.6.25.3: su gets stuck for root, Alan Cox, (Mon Jun 2, 3:50 am)
Re: 2.6.25.3: su gets stuck for root, Alan Cox, (Mon Jun 2, 3:52 am)
Re: 2.6.25.3: su gets stuck for root, Vegard Nossum, (Mon Jun 2, 3:57 am)
Re: 2.6.25.3: su gets stuck for root, Alan Cox, (Mon Jun 2, 5:28 am)
Re: 2.6.25.3: su gets stuck for root, Vegard Nossum, (Mon Jun 2, 7:31 am)
Re: 2.6.25.3: su gets stuck for root, Joe Peterson, (Mon Jun 2, 8:26 am)
Re: 2.6.25.3: su gets stuck for root, Alan Cox, (Mon Jun 2, 8:51 am)
Re: 2.6.25.3: su gets stuck for root, Joe Peterson, (Mon Jun 2, 9:03 am)
Re: 2.6.25.3: su gets stuck for root, Joe Peterson, (Wed Jun 4, 7:43 am)
Re: 2.6.25.3: su gets stuck for root, Alan Cox, (Wed Jun 4, 8:16 am)
Re: 2.6.25.3: su gets stuck for root, Joe Peterson, (Wed Jun 4, 9:52 am)
Re: 2.6.25.3: su gets stuck for root, Alan Cox, (Wed Jun 4, 10:10 am)
Re: 2.6.25.3: su gets stuck for root, Joe Peterson, (Wed Jun 4, 1:32 pm)
Re: 2.6.25.3: su gets stuck for root, Joe Peterson, (Wed Jun 11, 7:04 am)
Re: 2.6.25.3: su gets stuck for root, Vegard Nossum, (Thu Jun 12, 4:52 am)
Re: 2.6.25.3: su gets stuck for root, Joe Peterson, (Fri Jun 13, 6:49 pm)
Re: 2.6.25.3: su gets stuck for root, Vegard Nossum, (Sat Jun 14, 12:45 am)
Re: 2.6.25.3: su gets stuck for root, Joe Peterson, (Sat Jun 14, 10:43 am)
Re: 2.6.25.3: su gets stuck for root, Vegard Nossum, (Sat Jun 14, 1:34 pm)
Re: 2.6.25.3: su gets stuck for root, Joe Peterson, (Sat Jun 14, 1:52 pm)
Re: 2.6.25.3: su gets stuck for root, Vegard Nossum, (Sat Jun 14, 2:26 pm)
Re: 2.6.25.3: su gets stuck for root, Joe Peterson, (Sat Jun 14, 2:34 pm)
Re: 2.6.25.3: su gets stuck for root, Joe Peterson, (Tue Jun 17, 8:32 am)
Re: tty session leader issue (was Re: 2.6.25.3: su gets st ..., Tim Connors, (Sun Jul 6, 7:08 am)