[Bug 1184451] Re: Ubuntu 13.10 random screen freeze while Normal OS activites

2013-09-21 Thread Pierre-Luc Gagnon
Update:  I downgraded back to 13.04 and the problem vanished, thus
confirming that one of the upgraded packages is causing it.  However, I
am still running the 3.11.0-7-generic kernel,  so it's something else.

One way to uncover the culprit would be to update to 13.10 incrementally
just a few packages at a time and see which one brings back the freezes.
I don't have much time these next few days but if somebody could try it,
it would save all of us a lot of pain (really can't work like this).  I
will have a go at it next week.  I don't see any other solution unless
someone finally finds an error message in a log somewhere.

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Title:
  Ubuntu 13.10 random screen freeze while Normal OS activites

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[Bug 1184451] Re: Ubuntu 13.10 random screen freeze while Normal OS activites

2013-09-16 Thread Pierre-Luc Gagnon
Eh the freezes started occurring again, with the older kernel and very
frequently too.  I thought I was on to something.  Oh well.

Also I notice that after rebooting it takes a little while before the
freezes start

Maybe relevant info:
KDE 4.11.1
Linux 3.11.0-7-generic x86_64
CPU0: Intel(R) Core(TM) i5 CPU   M 560  @ 2.67GHz (fam: 06, model: 25, 
stepping: 05)
Hybrid graphics (nVidia Optimus)

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Title:
  Ubuntu 13.10 random screen freeze while Normal OS activites

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[Bug 1184451] Re: Ubuntu 13.10 random screen freeze while Normal OS activites

2013-09-15 Thread Pierre-Luc Gagnon
Hi all.  I too had these issues right after upgrading my system to
13.10.  My experience mirrors that of Phill, with a few differences:

* Sound output is sometimes interrupted in my audio player
* Mouse still moves (clicks don't work) BUT it sometimes freezes as well
* The problem occurs in a virtual console as well.  Emacs freezes (I can't 
enter text)
* No reboot required.  But sometimes it takes a long time for the computer to 
unfreeze.
* Ubuntu 13.10 64-bit (3.11.0-7-generic)

Furthermore, contrary to saha's experience,  there isn't any correlation
between a freeze and cpu load for me.  Also saha is running a
3.8.0-25-generic kernel and the freezes don't occurs with 3.8.0 for me
(see end of my comment).

I have a laptop with nvidia optimus (intel graphics + discrete nvidia
card, however the intel card always drives the display even though the
nvidia card might be the source).  The problem occurs while using any of
the 2 graphics adapters.  However a bug in the intel driver could still
be to blame, but very unlikely in my opinion.  So I don't think this is
a graphics issue.

Now, I also have a 3.8.0-30-generic kernel, which I have been using for
an hour now.  No freezes yet.  So I think this is a kernel bug.  I think
it unlikely to be a problem related to a combination kernel + gfx card
because as I mentioned the problem occurs without X too.  I will update
my comment if a freeze occurs.

I will try different kernels and see what happens and report back.

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  Ubuntu 13.10 random screen freeze while Normal OS activites

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[Bug 568495] Re: Evince frequently replaces pi glyphs with not equal to and other substitutions.

2011-02-07 Thread Pierre-Luc Gagnon
To save some time, and as mentioned in bug #162111, this problem is
fixed by installing wine-1.3 (available from the ppa)

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Title:
  Evince frequently replaces pi glyphs with not equal to and other
  substitutions.

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