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apt uninstall apparmor (was: Thunderbird no longer opens links)

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  apt uninstall apparmor (was: Thunderbird no longer opens links) solitone <solitone@mail.com> - 2018-01-12 19:20 +0100
    Re: apt uninstall apparmor (was: Thunderbird no longer opens links) Brian <ad44@cityscape.co.uk> - 2018-01-12 21:40 +0100
      Re: apt uninstall apparmor (was: Thunderbird no longer opens links) Brian <ad44@cityscape.co.uk> - 2018-01-13 21:00 +0100
        Re: apt uninstall apparmor solitone <solitone@mail.com> - 2018-01-14 07:20 +0100
      Re: apt uninstall apparmor solitone <solitone@mail.com> - 2018-01-14 19:40 +0100
        Re: apt uninstall apparmor Brian <ad44@cityscape.co.uk> - 2018-01-14 20:10 +0100
          Re: apt uninstall apparmor solitone <solitone@mail.com> - 2018-01-14 20:30 +0100
            Re: apt uninstall apparmor Brian <ad44@cityscape.co.uk> - 2018-01-14 20:40 +0100
    Re: apt uninstall apparmor Ben Caradoc-Davies <ben@transient.nz> - 2018-01-12 22:20 +0100

#191000 — apt uninstall apparmor (was: Thunderbird no longer opens links)

On 30/11/17 08:48, Alexander V. Makartsev wrote:
> On 30.11.2017 10:45, solitone wrote:
>> Hi, since a few days, hyperlink no longer works in my Thunderbird.
>> When I click a hyperlink in a message, Chromium (my system's default
>> web browser) should open and display the link. This has been working
>> fine for long, but now it no longer happens.
>>
> I had this problem too, and yes AppArmor is the reason.
> 
> You can disable AppArmor for thunderbird by typing:
>     $ sudo aa-disable /usr/bin/thunderbird


I was almost going nuts with qemu/virt-manager. I could no longer attach
USB devices to the guest. When shutting down the guest, it ended up in a
"shutting down" state, and never exited from that.

Then I found a post [1] pointing the finger to apparmor. I uninstalled
it and everything works again as expected. At the moment I have no plan
to reinstall it.

[1]
https://ubuntuforums.org/showthread.php?t=2229882&page=2&p=13070240#post13070240

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#191005

On Fri 12 Jan 2018 at 19:16:28 +0100, solitone wrote:

> On 30/11/17 08:48, Alexander V. Makartsev wrote:
> > On 30.11.2017 10:45, solitone wrote:
> >> Hi, since a few days, hyperlink no longer works in my Thunderbird.
> >> When I click a hyperlink in a message, Chromium (my system's default
> >> web browser) should open and display the link. This has been working
> >> fine for long, but now it no longer happens.
> >>
> > I had this problem too, and yes AppArmor is the reason.
> > 
> > You can disable AppArmor for thunderbird by typing:
> >     $ sudo aa-disable /usr/bin/thunderbird
> 
> 
> I was almost going nuts with qemu/virt-manager. I could no longer attach
> USB devices to the guest. When shutting down the guest, it ended up in a
> "shutting down" state, and never exited from that.
> 
> Then I found a post [1] pointing the finger to apparmor. I uninstalled
> it and everything works again as expected. At the moment I have no plan
> to reinstall it.
> 
> [1]
> https://ubuntuforums.org/showthread.php?t=2229882&page=2&p=13070240#post13070240

Do you have a plan to inform the AppArmor team of your detailed findings?
The wiki has some help if you don't know what to do.

-- 
Brian.

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#191048

On Fri 12 Jan 2018 at 20:37:22 +0000, Brian wrote:

> On Fri 12 Jan 2018 at 19:16:28 +0100, solitone wrote:
> 
> > On 30/11/17 08:48, Alexander V. Makartsev wrote:
> > > On 30.11.2017 10:45, solitone wrote:
> > >> Hi, since a few days, hyperlink no longer works in my Thunderbird.
> > >> When I click a hyperlink in a message, Chromium (my system's default
> > >> web browser) should open and display the link. This has been working
> > >> fine for long, but now it no longer happens.
> > >>
> > > I had this problem too, and yes AppArmor is the reason.
> > > 
> > > You can disable AppArmor for thunderbird by typing:
> > >     $ sudo aa-disable /usr/bin/thunderbird
> > 
> > 
> > I was almost going nuts with qemu/virt-manager. I could no longer attach
> > USB devices to the guest. When shutting down the guest, it ended up in a
> > "shutting down" state, and never exited from that.
> > 
> > Then I found a post [1] pointing the finger to apparmor. I uninstalled
> > it and everything works again as expected. At the moment I have no plan
> > to reinstall it.
> > 
> > [1]
> > https://ubuntuforums.org/showthread.php?t=2229882&page=2&p=13070240#post13070240
> 
> Do you have a plan to inform the AppArmor team of your detailed findings?

Thought not.

Pointing the finger at a 3+ year old post on another OS is easier than
engaging in a detailed bug report which involves time and effort. And
people wonder why bugs slip through to stable. 

> The wiki has some help if you don't know what to do.

The AppArmor folk are avidous for bug reports.

-- 
Brian.
> 
> -- 
> Brian.
> 

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#191053 — Re: apt uninstall apparmor

On 13/01/18 20:51, Brian wrote:
>> Do you have a plan to inform the AppArmor team of your detailed findings?
> 
> Thought not.
> 
> Pointing the finger at a 3+ year old post on another OS is easier than
> engaging in a detailed bug report which involves time and effort. And
> people wonder why bugs slip through to stable. 

Sorry for the delay, but I don't have so much time. Please give me some
time. I will, but when I manage. For the time being I uninstalled
apparmor just because I need my computer to work when I need it.

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#191077 — Re: apt uninstall apparmor

On 12/01/18 21:37, Brian wrote:
> Do you have a plan to inform the AppArmor team of your detailed findings?

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=887163
Apparently it's a well known issue.

Cheers

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#191086 — Re: apt uninstall apparmor

On Sun 14 Jan 2018 at 19:31:46 +0100, solitone wrote:

> On 12/01/18 21:37, Brian wrote:
> > Do you have a plan to inform the AppArmor team of your detailed findings?
> 
> https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=887163
> Apparently it's a well known issue.
> 
> Cheers

Kudos for your detailed reporting of the issue. And, don't you think,
worth the effort? The bug was explained and an interim solution given.
intrigeri and the AppArmor team have invested a considerable effort
into the present experimental project for buster. I wouldn't have
expected less than the response you got.

-- 
Brian.

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#191090 — Re: apt uninstall apparmor

On 14/01/18 20:08, Brian wrote:
> don't you think worth the effort?

Yes, I do. And I've reinstalled apparmor, and will try intrigeri's solution.

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#191092 — Re: apt uninstall apparmor

On Sun 14 Jan 2018 at 20:22:13 +0100, solitone wrote:

> On 14/01/18 20:08, Brian wrote:
> > don't you think worth the effort?
> 
> Yes, I do. And I've reinstalled apparmor, and will try intrigeri's
> solution.

I am sure your feedback will prove invaluable.

-- 
Brian.

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#191009 — Re: apt uninstall apparmor

On 13/01/18 07:16, solitone wrote:
> Then I found a post [1] pointing the finger to apparmor. I uninstalled
> it and everything works again as expected. At the moment I have no plan
> to reinstall it.

If you find yourself needing to install it for dependencies, you can 
disable and mask it with:

systemctl disable apparmor.service
systemctl mask apparmor.service

and then reboot.

Kind regards,

-- 
Ben Caradoc-Davies <ben@transient.nz>
Director
Transient Software Limited <https://transient.nz/>
New Zealand

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