octave-gui hangs

[David Lawrence]

If I hit ctrl-c in the command window of octave gui during execution of a loop that I want to break out of, octave-gui command window intermittently "hangs". When I say hangs, it does not exit from the loop and it does not return to a prompt. I can still type into the window.

Description: Ubuntu 16.04.1 LTS
Release: 16.04

ctave:
  Installed: 4.0.0-3ubuntu9.1
  Candidate: 4.0.0-3ubuntu9.1
  Version table:
 *** 4.0.0-3ubuntu9.1 500
        500 http://us.archive.ubuntu.com/ubuntu xenial-updates/universe amd64 Packages
        100 /var/lib/dpkg/status
     4.0.0-3ubuntu9 500
        500 http://us.archive.ubuntu.com/ubuntu xenial/universe amd64 Packages

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: octave 4.0.0-3ubuntu9.1
ProcVersionSignature: Ubuntu 4.4.0-38.57-generic 4.4.19
Uname: Linux 4.4.0-38-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia_modeset nvidia
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
CurrentDesktop: KDE
Date: Tue Sep 27 14:52:49 2016
EcryptfsInUse: Yes
InstallationDate: Installed on 2016-09-09 (18 days ago)
InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
SourcePackage: octave
UpgradeStatus: No upgrade log present (probably fresh install)

[Mike Miller (mtmiller)]

Are you still able to reproduce this bug with the current version of Octave in your version of Ubuntu?

Can you give an example of a loop that demonstrates this problem when you issue Ctrl+C?

Can you ensure that the Octave screen pager is disabled by running 'more off', or adding that to your ~/.octaverc?

Can you still reproduce this error if you start Octave from a terminal with the following command

    env OMP_NUM_THREADS=1 /usr/bin/octave

[David Lawrence (david-gary-lawrence)]

I saw it recently, but I'm running Ubuntu 16.10 which is relatively old at
this point. I plan to upgrade to Ubuntu 18.04 soon which I assume has a
relatively recent version of octave. I'll look for it in that version.

I don't have an example handy that causes it to crash. The problem is
intermittent, so it's hard to get an example, but I'll try.

I can confirm that the screen pager has always been disabled when I've seen
the problem. I never have it enabled.
 I will also try the OMP_NUM_THREADS test the next time I see the problem.

On Thu, Mar 15, 2018 at 3:12 PM, Mike Miller <email address hidden> wrote:

> Are you still able to reproduce this bug with the current version of
> Octave in your version of Ubuntu?
>
> Can you give an example of a loop that demonstrates this problem when
> you issue Ctrl+C?
>
> Can you ensure that the Octave screen pager is disabled by running 'more
> off', or adding that to your ~/.octaverc?
>
> Can you still reproduce this error if you start Octave from a terminal
> with the following command
>
> env OMP_NUM_THREADS=1 /usr/bin/octave
>
> ** Changed in: octave (Ubuntu)
> Status: New => Incomplete
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1628296
>
> Title:
> octave-gui hangs
>
> Status in octave package in Ubuntu:
> Incomplete
>
> Bug description:
> If I hit ctrl-c in the command window of octave gui during execution
> of a loop that I want to break out of, octave-gui command window
> intermittently "hangs". When I say hangs, it does not exit from the
> loop and it does not return to a prompt. I can still type into the
> window.
>
> Description: Ubuntu 16.04.1 LTS
> Release: 16.04
>
> ctave:
> Installed: 4.0.0-3ubuntu9.1
> Candidate: 4.0.0-3ubuntu9.1
> Version table:
> *** 4.0.0-3ubuntu9.1 500
> 500 http://us.archive.ubuntu.com/ubuntu xenial-updates/universe
> amd64 Packages
> 100 /var/lib/dpkg/status
> 4.0.0-3ubuntu9 500
> 500 http://us.archive.ubuntu.com/ubuntu xenial/universe amd64
> Packages
>
> ProblemType: Bug
> DistroRelease: Ubuntu 16.04
> Package: octave 4.0.0-3ubuntu9.1
> ProcVersionSignature: Ubuntu 4.4.0-38.57-generic 4.4.19
> Uname: Linux 4.4.0-38-generic x86_64
> NonfreeKernelModules: nvidia_uvm nvidia_modeset nvidia
> ApportVersion: 2.20.1-0ubuntu2.1
> Architecture: amd64
> CurrentDesktop: KDE
> Date: Tue Sep 27 14:52:49 2016
> EcryptfsInUse: Yes
> InstallationDate: Installed on 2016-09-09 (18 days ago)
> InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64
> (20160719)
> SourcePackage: octave
> UpgradeStatus: No upgrade log present (probably fresh install)
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/ubuntu/+source/octave/+bug/
> 1628296/+subscriptions
>

[Launchpad Janitor (janitor)]

[Expired for octave (Ubuntu) because there has been no activity for 60 days.]