After updates today my 11.10 laptop is misbehaving badly (though I
cannot be certain it was the updates as I was experimenting switching
between unity and unity-2d and plugging and unplugging external
monitors so it is possible something I did there triggered it). On
the login screen if I move or click the mouse or touchpad lightdm (if
that is what it is) appears to crash, the text display appears for a
few seconds and then the logon screen is redrawn. If I logon without
touching the mouse then everything is fine until I touch the mouse
when again it crashes and goes back to the logon screen.

I have tried
sudo apt-get update && sudo apt-get dist-upgrade
sudo apt-get install -f
sudo dpkg --configure -a
but none of these indicated that they had done anything.

I have a dual boot on the machine and am able to boot into 12.04 with
no problems so hardware can be ruled out. All I see in syslog at the
time of the crash (from the login screen) is

Feb 3 21:05:04 piglet acpid: client 1060[0:0] has disconnected
Feb 3 21:05:04 piglet acpid: client connected from 2323[0:0]
Feb 3 21:05:04 piglet acpid: 1 client rule loaded

Note that as it happens from the login screen it would not seem that
it is anything to do with unity.

I have no idea what to do next so any suggestions will be much appreciated.

Colin

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On 02/03/2012 04:29 PM, Colin Law wrote:

After updates today my 11.10 laptop is misbehaving badly (though I
cannot be certain it was the updates as I was experimenting switching
between unity and unity-2d and plugging and unplugging external
monitors so it is possible something I did there triggered it). On
the login screen if I move or click the mouse or touchpad lightdm (if
that is what it is) appears to crash, the text display appears for a
few seconds and then the logon screen is redrawn. If I logon without
touching the mouse then everything is fine until I touch the mouse
when again it crashes and goes back to the logon screen.


Usually all I have to do is blow out the cruft off from the laser. But
it works with another version? Wow... I'm not sure which config file
rules the mouse, but mv'ing it to a backup file and rebooting would most
likely fix it? You have a very interesting problem there, Colin! If you
can't move the mouse, not much chance of fixing it from the gui. Can you
boot with the install disk and use the rescue mode to see if that works
at all?? Ric



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Hi, I've got the same. Did you managed to fix it?
Regards,
adam



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On 7 February 2012 12:12, adam <adam.slaski@gmail.com> wrote:
> Hi, I've got the same. Did you managed to fix it?

No, I didn't get any further with it. I had been planning to move to
12.04 fairly soon anyway as it seems so stable so I did that rather
than waste any more time on it. I installed on a separate partition
so I can still boot into the failing system. If you have exactly the
same symptom as me then it sounds like a bug rather than something I
had done. If you want to submit a bug I will attach myself to it so
it will be 'confirmed'. I don't know which package it should go on,
you could put it on lightdm since it shows itself on the logon screen
and let someone else work out where it should go.

Colin

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it turned out to be enough to downgrade the xserver:

sudo aptitude install xserver-xorg-core=2:1.10.4-1ubuntu4

regards,
adam


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On 02/07/2012 07:31 AM, Colin Law wrote:

On 7 February 2012 12:12, adam<adam.slaski@gmail.com> wrote:

Hi, I've got the same. Did you managed to fix it?


No, I didn't get any further with it. I had been planning to move to
12.04 fairly soon anyway as it seems so stable so I did that rather
than waste any more time on it. I installed on a separate partition
so I can still boot into the failing system. If you have exactly the
same symptom as me then it sounds like a bug rather than something I
had done. If you want to submit a bug I will attach myself to it so
it will be 'confirmed'. I don't know which package it should go on,
you could put it on lightdm since it shows itself on the logon screen
and let someone else work out where it should go.
I had an update that failed as the new package for evince had +1 to the
package version number. I dnloaded the file directly (the one with the
higher version number, used dpkg -i to install it, then proceeded with
the update which cured my mouse. Damn thing was just hung. I had to do
this from the command shell as the desktop was frozen tight as a drum.


Just run sudo spt-get update and sudo apt-get upgrade to see if it's
hanging on "evince". There was a kernel upgrade that also didn't make
the trip from the upgrade freeze. Ergo, it froze up from a half-assed
upgrade. Ric




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It seems the issue affects not only me, but i see only 2 votes on the
bugtracker:
https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/927177

Downgrading xorg-server is a temporary workaround. We need them to remove this
stupid patch.


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