[BRLTTY] Braille display inoperable in GUI since polkit-update

[Frans-Willem Post]

Dear John,

Thank you very very very much! Your instructions worked perfectly.

The display came back to life immediately after editing the conf-file, a
simple "sudo touch /etc/brlapi.key" and "sudo chmod 0644 /etc/brlapi.key".

Kind regards,
Frans-Willem Post

On 23-07-18 10:36, John Covici wrote:
> You might want to make sure you have a line in your /etc/brltty.conf
> like this:
> api-parameters Auth=keyfile:/etc/brlapi.key  # Require authentication
> key
> and create the keyfile and give it 0644 permissions and put some data
> in the file -- I am not sure it matters what the data is.
> 
> On Mon, 23 Jul 2018 03:50:42 -0400,
> Frans-Willem Post wrote:
>>
>> [1  <multipart/signed (7bit)>]
>> [1.1 Braille display inoperable in GUI since polkit-update <multipart/mixed (7bit)>]
>> [1.1.1  <text/plain; utf-8 (quoted-printable)>]
>> Hello list,
>>
>> Using:
>> - Ubuntu 18.04 LTS
>> - GNOME 3.28.2
>> - Orca 3.28.0
>> - BrlTTY 5.5
>> - policykit 0.105
>>
>> Since an upgrade of polkit last week, my braille display doesn't
>> work anymore when in GUI mode. On text console TTYs (Ctrl+Alt+F3, +F4
>> etc) it does work.
>>
>> I have replayed this upgrade in a VM with a clean install of Ubuntu. The
>> problem begins as soon as the system reboots after the policykit update.
>>
>> I've filed a bug:
>> https://bugs.launchpad.net/ubuntu/+source/brltty/+bug/1782320
>>
>> These are the error messages taken from /var/log/syslog:
>> brltty[2635]: polkit_authority_check_authorization_sync error 11:
>> Resource temporarily unavailable.
>> brltty[2635]: brltty: polkit_authority_check_authorization_sync error
>> 11: Resource temporarily unavailable.
>>
>> This is continuous, while the display reads "Screen not in text mode".
>> Ultimately, the display turns itself off (or BrlTTY does this, I don't
>> know).
>>
>> Can someone help me get the display back up under GNOME (i.e. under X)?
>>
>> Thank you very much,
>>
>> Frans-Willem Post
>>
>>
>>
>>
>>
>> [1.2 OpenPGP digital signature <application/pgp-signature (7bit)>]
>> No public key for C0932DFE211E9A9D created at 2018-07-23T03:50:42-0400 using RSA
>> [2  <text/plain; us-ascii (7bit)>]
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> 

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