Hi,
I encountered the same problem since 2-3 weeks now.
My setup :
- Ubuntu 14.04 LTS
- Lenovo ThinkPad T420
+ an additional Lenovo Screen ThinkVision (20)
+ Logitech Anywhere MX mouse
I use the shortcut Windows + L (same as CTRL+ALT+L but less fingers are
needed) to lock my laptop.
** Description changed:
+ [ Impact ]
+
+ A crash is occurring for many users of Trusty when the screen is
+ locking.
+
+ [ Test Case ]
+
+ Lock the screen.
+
+ [ Regression Potential ]
+
+ None as this is removing a commit causing this regression.
+
+
** Branch linked: lp:~townsend/unity/fix-lp1451613-trusty
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Title:
Unity/compiz crashes when locking screen
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So far, this has only been reported on Trusty. It's still unclear to us
why this is occurring only on Trusty. Given that we still don't have a
proper fix in place for this on Trusty, we are just going to revert the
offending commit and get an SRU out with only this reversion as soon as
possible.
Seems like the debug symbols are not correct installed. At this point I
think it's safer to revert the fix that causes this crash.
2015-05-31 15:56 GMT+02:00 Scaler 1451...@bugs.launchpad.net:
I've updated packages (and installed unity-dbg) from ppa with debug
symbols, then reboot. The
I've updated packages (and installed unity-dbg) from ppa with debug
symbols, then reboot. The backtrace is attached.
** Attachment added: gdb-compiz-v3.txt
https://bugs.launchpad.net/ubuntu/+source/unity/+bug/1451613/+attachment/4407575/+files/gdb-compiz-v3.txt
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https://code.launchpad.net/~azzar1/+archive/ubuntu/unity-dbg-symbols
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Title:
Unity/compiz crashes when locking screen
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Would be nice to install the debug symbols in this ppa, reproduce the
crash and get a valid backtrace so we can properly fix the crash. The
package is unity-dbg.
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The build works fine for me too... However I do have a question.. Now
that I have installed this package, when the official build is
published, would I have to do something to get the official version or
will my system automatically do it for me?
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Hi All,
None of us can reproduce the issue and without a stacktrace with
symbols, it's very hard to tell exactly what may be causing the issue.
That said, Andrea has a suspicion of what the problem is, so we need to
volunteers to test it out.
I have created a PPA that is the latest Trusty
Did you restart unity?
On 29 May 2015 17:50, Scaler 1451...@bugs.launchpad.net wrote:
Crash still occurs with package in ppa.
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Title:
Unity/compiz crashes when
Crash still occurs with package in ppa.
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Title:
Unity/compiz crashes when locking screen
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Ok, i'm trying to build a ppa with the correct dbg symbols for trusty.
Let's see if we can get a usable stacktrace.
2015-05-29 19:34 GMT+02:00 Scaler 1451...@bugs.launchpad.net:
I've restarted my computer after updating the packages.
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Hi,
While Andrea works on a way to get proper debugging symbols, I have
uploaded a new package to the same PPA that reverts the potential fix
and also reverts rev. 3810 which is where we suspect the problem is.
Once the packages build and are published in the PPA, please try it out
and see if the
I've restarted my computer after updating the packages.
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Title:
Unity/compiz crashes when locking screen
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I've update to the new build packages and after a reboot and ~40
locks/unlocks, no crash :)
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Title:
Unity/compiz crashes when locking screen
To
I can't install debug symbols right now, but wanted to mention that I
don't have light-locker installed either.
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Title:
Unity/compiz crashes
Can you try to install the debug symbols? (
https://wiki.ubuntu.com/DebuggingProgramCrash)
2015-05-27 19:08 GMT+02:00 Andrea Azzarone 1451...@bugs.launchpad.net:
The problem with the backtrace is that they are missing the debug
symbols. Btw are you sure that light-lock is not installed?
**
I am also having this issue (approx daily). I'm running Ubuntu 14.04.2,
with multiple monitors and an nvidia graphics card.
I'm afraid that I can't provide any logs/traces right now, but I can
corroborate the thing about having to unlock twice. I can perhaps
provide some more vague-but-useful
I'm not sure if this is of any use or not, but I have re-generated the
stacktrace from the relevant crash file using apport-retrace. It's
attached.
** Attachment added: compizcrash.txt
https://bugs.launchpad.net/ubuntu/+source/unity/+bug/1451613/+attachment/4405646/+files/compizcrash.txt
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I can reproduce this reliably with the method of moving the mouse when
locking the PC (which I do with the keyboard shortcut).
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Title:
The problem with the backtrace is that they are missing the debug
symbols. Btw are you sure that light-lock is not installed?
** Changed in: unity
Status: New = Confirmed
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and light-locker is not installed.
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Title:
Unity/compiz crashes when locking screen
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New backtrace with debug symbols (at least for the packages I could find
a corresponding -dbg).
** Attachment added: compiz backtrace with symbols
https://bugs.launchpad.net/ubuntu/+source/unity/+bug/1451613/+attachment/4405846/+files/gdb-compiz-symb.txt
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I guess compiz is restarted somehow.
If that helps, I can sometimes very briefly see the nvidia logo before the
first locked screen, like when I do a fresh boot.
But the system is not rebooted since services are still running…
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Then when I try to unlock the screen I need to enter my password twice
(with no error message after the first try
This seems strange to me. If compiz crashes you should not be able to
unlcock the screen.
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I did some other tests with mouse and touchpad, when locking screen:
- if I use mouse click or click with button near touchpad → chrash
- if I use *tap* on touchpad or key shortcut CTRL+ALT+L (unlike what I said in
my first report) → no crash
and I managed to produce a backtrace \o/ (that wasn't
Probably the crash is caused by the fix to bug #1401911. I'm looking
into it. Do you have a multi-head setup?
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Title:
Unity/compiz crashes when
Nope I don't have multiple monitors. I only have 1 screen that is the
default laptop screen.
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Title:
Unity/compiz crashes when locking screen
Still unsure how to produce a backtrace...
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Title:
Unity/compiz crashes when locking screen
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Still unsure how to produce a backtrace...
Can anyone tell how to downgrade to previous versions?
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Title:
Unity/compiz crashes when locking
Same behavior tthan Ammar here:
- with mouse connected, crash happen every 2-3 locks,
- without mouse, no crash after 15 locks.
I'm using a Logitech Performance MX mouse.
I will try to give a backtrace when I figure how to produce it ^^
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Sorry don't have 15.04 installed. However I did notice that if I
disconnect my mouse and the lock my laptop, it locks perfectly.
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Title:
** Tags added: lockscreen
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Unity/compiz crashes when locking screen
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Can anyone reproduce this on 15.04?
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Title:
Unity/compiz crashes when locking screen
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This bug affects me. It just started happening.
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Title:
Unity/compiz crashes when locking screen
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I am also having the same problem here, it started to happen a lot after
I did regular updates last friday.
I am using nvidia drivers 331.113
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I also have the same problem.
** Also affects: unity
Importance: Undecided
Status: New
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Title:
Unity/compiz crashes when locking
I have the same problem, dmesg shows the following:
[18317.562770] compiz[2269]: segfault at 3e8 ip 03e8 sp bfac448c
error 14 in compiz[8048000+3000]
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Would be nice to have a backtrace.
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Unity/compiz crashes when locking screen
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Andrea, any idea about this?
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Unity/compiz crashes when locking screen
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Downgrading unity and compiz to the previously available versions makes
the problem go away. Unfortunately I don't know if just one of them
would have been enough.
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Several other people at my company have seen this issue, using Unity for
14.04. Also using nvidia.
Compiz segfaults when the lock screen is supposed to get rendered and
then the session is terminated, logging them out.
This started happening with the latest SRU, that ships:
compiz
This bug affects me
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Unity/compiz crashes when locking screen
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It appens to me also, after every 2-3 locks...
** Attachment added: _usr_bin_compiz.1000.crash
https://bugs.launchpad.net/ubuntu/+source/unity/+bug/1451613/+attachment/4392068/+files/_usr_bin_compiz.1000.crash
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Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: unity (Ubuntu)
Status: New = Confirmed
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