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Q: How to define the running task icon?

9:19 AM

I'm running Gnome 3.36.1 under Ubuntu 20.04. In the Gnome desktop file I have defined an icon 'myIcon' and this appears in the menu and on the extension "TaskBar 2020" favorites list. However when running the task reverts in the task list to the standard Java icon 'Duke' and I can't differentiate...

Q: Bluetooth Audio Issue after upgrading from Ubuntu 18.04 to Ubuntu 20.04

10:07 AM

I upgraded my machine from Ubuntu 18.04 to Ubuntu 20.04. After upgrade, the audio playback on my Bluetooth Headphone stopped. Any streaming video on browser get barred automatically. When I looked at status, it said - anton@anton-X510UNR:~$ sudo /etc/init.d/bluetooth status ● bluetooth.service...

ubuntu pulseaudio bluetooth

Q: Chrome (Beta) freezes when I try loading a certain page

10:31 AM

Okay, so there's this specific page that makes Chrome freeze/only load partially. This happens when the page has a lot of images, so I think that might be causing the problem. It does not happen with Chrome Canary, which I run on Windows 10 in a VM. When this happens, I usually get a bunch of e...

ubuntu chrome

5 hours later…

3:40 PM

Good evening everyone! I was curious about something. Does every key added on the apt-key have a corresponding apt repository? I know the repositories will use the keys to authenticate the packages, but I can't seem to find something linking a repository to a key. So I was wondering if when we download a package, it just checks the signature against every key until it finds a match, or if they are actually bound to a particular repository

Or even if there's another configuration file that matches a repository to a particular key

3:59 PM

@IanC you can find out by issuing apt-key list the keys are usually bound to the repositories

@Videonauth When I do it I get a list of the public keys, but there's not a particular debian repository associated with it, just a pub hash number, uid which gives a name to the key and a subwhich I think it's the date it was issued?

I know I can identify the repository by the uid, because usually it will be something like "Docker ...", or anything like that. But I wonder how apt knows which keys to check when downloading from a repository

this is how it looks for me on 18.04

just an excerpt

Yes, but there's no name of a debian repository. What I mean is how apt knows which key to use to authenticate a package from a particular debian repository from /etc/apt/source.list or /etc/apt/source.list.d/?

the key files are equal to the source.list files in sources.list.d except of the ending of course the key files ending on gpg and the others on .list

Since we don't associate them with eachother when adding keys

@Videonauth Sometimes the repositories are added at /etc/apt/source.list though, then we can't compare filenames to associate each key with a repository

4:10 PM

so im asuming here that the equality of the file names is one of the factors to verify keys, otherwise it does work if you rename the .list files by hand i assume it looks up the fingerprint from the list of keys

@Videonauth Exactly what I was supposing, when there isn't a equal file, it would then just iterate through all keys when downloading from a repository until it finds (or not) a match?

i guess so, as its not very resource demanding to go through that list

Awesome, thanks @Videonauth, I was a bit curious :p

but thats like i said an assumtion I make on what i observed the past 4 years, but i think I know somone who might know the answer to that but you would have to go to U&L chat

Just upgraded and was getting rid of some third-party PPAs, and it came to mind

4:13 PM

and ask stephen kitt

Cool! I'll ask him, or even write a question on Unix so I can upvote and accept his answer

Thanks again man!

you're welcome

5 hours later…