Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.os.linux.misc > #37124

Re: GUI pauses when on TTY

Show all headers | View raw

On 2023-02-18 20:35, Andreas Kohlbach wrote:
> On Sat, 18 Feb 2023 17:59:06 +0100, Carlos E.R. wrote:
>> On 2023-02-18 15:59, Rich wrote:
>>> Andreas Kohlbach <ank@spamfence.net> wrote:
>>>> Yes, I am old school and like to work on a TTY whenever possible. But of
>>>> course I need GUI browsers and other GUI stuff too.
>>>>
>>>> And before someone says, "Use Xterm in full screen", please don't. :-)
>      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [1]

Yes, I had seen that and purposely ignored it :-P

>>>> My problem is that on MATE (MINT Linux) pretty much everything stalls
>>>> once I switch to a TTY.
>>> If you mean the shift+alt+Fx key to swtich to one of Linux's native
>>> terminals, then this is expected.  The switch out of X and back to a
>>> TTY is a suspend of X, meaning the entire X session is paused.
>>
>> AFAIK the GUI is not suspended. This behaviour is relatively new, I
>> don't remember when it started. It affects multimedia.
> 
> Thanks Carlos. Something I also observed: new thingy. Probably five years
> or less.
> 
>>       You can run a long job, like a backup script, and it
>>       should continue running non stop when switching to a TTY.
>>
>> The same toolset that is used to "detect who is at the seat" does
>> it. Rationale is that it gives permissions to use the sound device to
>> the person that is seated, meaning the person having the GUI. As when
>> in tty mode no one has the GUI, there is no permission to use sound
>> and things stop.
> 
> Ah "seats". I noted this term in logs. Will have to read up on this. Thanks.
> 
>> This could be HAL/ConsoleKit/PolicyKit. Or could be the display
>> manager doing it.
> 
> Sounds promising.
> 
> But hard to google for "GUI" and "suspend", as results usually deal with
> suspending the whole system (hibernate).

I have no idea if systemd can be involved, I forgot to mention.

> 
> [1]
> 
>> The way to avoid this is not using the TTY, but an xterm.
> 
> That I tried to avoid. I want to kick it old school. :-D
> 
> [Update]
> 
> New observation: Just started a video via mpv and switched to a TTY (to
> write this article here). I still can hear the music playing! Assuming
> the video would also progress.

Well, the player should be clever and skip the displaying part ;-)

Also if you just minimize the player. Why do all the job of rendering 
the video?

The speculation how much to decode and at what level stop processing 
video, can be "big". At worst, all the decoding is done but just stops 
at the video memory move.

> So some stuff seems to "bypass a 'suspended' GUI". Now I'd like to tell
> that a suspension doesn't happen at all, or tell more apps to get around
> this.

-- 
Cheers, Carlos.

Back to comp.os.linux.misc | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

GUI pauses when on TTY Andreas Kohlbach <ank@spamfence.net> - 2023-02-18 02:07 -0500
  Re: GUI pauses when on TTY The Natural Philosopher <tnp@invalid.invalid> - 2023-02-18 10:02 +0000
    Re: GUI pauses when on TTY Andreas Kohlbach <ank@spamfence.net> - 2023-02-18 14:20 -0500
  Re: GUI pauses when on TTY Rich <rich@example.invalid> - 2023-02-18 14:59 +0000
    Re: GUI pauses when on TTY "Carlos E.R." <robin_listas@es.invalid> - 2023-02-18 17:59 +0100
      Re: GUI pauses when on TTY Andreas Kohlbach <ank@spamfence.net> - 2023-02-18 14:35 -0500
        Re: GUI pauses when on TTY "Carlos E.R." <robin_listas@es.invalid> - 2023-02-18 21:00 +0100
          Re: GUI pauses when on TTY Andreas Kohlbach <ank@spamfence.net> - 2023-02-18 21:29 -0500
        Re: GUI pauses when on TTY The Natural Philosopher <tnp@invalid.invalid> - 2023-02-19 12:03 +0000
      Re: GUI pauses when on TTY Dan Espen <dan1espen@gmail.com> - 2023-02-18 20:08 -0500
        Re: GUI pauses when on TTY Andreas Kohlbach <ank@spamfence.net> - 2023-02-18 21:37 -0500
          Re: GUI pauses when on TTY Dan Espen <dan1espen@gmail.com> - 2023-02-18 22:16 -0500
        Re: GUI pauses when on TTY Dan Espen <dan1espen@gmail.com> - 2023-02-18 22:23 -0500
          Re: GUI pauses when on TTY Andreas Kohlbach <ank@spamfence.net> - 2023-02-19 17:31 -0500
        Re: GUI pauses when on TTY "Carlos E.R." <robin_listas@es.invalid> - 2023-02-19 13:12 +0100
      Re: GUI pauses when on TTY marrgol <marrgol@address.invalid> - 2023-02-19 02:54 +0100

csiph-web