Re: How to get X Windows to stop blanking out

On 23 Jul 2008 13:38:46 GMT Niklaus Kuehnis <kuehnik_0505@xxxxxxxxxxxxxx> wrote:
| phil-news-nospam@xxxxxxxx wrote:
|> On Tue, 22 Jul 2008 20:50:08 GMT Bill Marcum <marcumbill@xxxxxxxxxxxxx> wrote:
|> | On 2008-07-21, phil-news-nospam@xxxxxxxx <phil-news-nospam@xxxxxxxx> wrote:
|> |>
|> |> I sure hope it isn't a case of some magic subset and in a specific order that
|> |> is required to do this. There should be a setting somewhere that controls
|> |> how long with no input before blanking or running the screen saver. Maybe if
|> |> that value is set to 0 it would disable.
|> |>
|> |> I'm also finding that on text console, this command that should prevent the
|> |> blanking there, sometimes does not (e.g. sometimes it blanks out anyway):
|> |>
|> |> setterm -blank 0
|> |>
|> |> I also tried this inside xterm to see if xterm would "know what to do". No
|> |> such luck.
|> |>
|> | If the monitor itself has a menu, you might be able to disable power
|> | saving there.
|
|> It's not the power saving I'm trying to disabled. The screen goes blank/black.
|> I want the image (weather radar) to stay on the screen all the time. Imagine
|> it as a kiosk or as a video feeder to a cable TV weather radar channel (which
|> reminds of me of a few times I have seen a MS Windows blue screen on some
|> cable text channels).
|
| Just an idea: Could you send a periodic keyboard event, e.g. with
| xvkbd or maybe with expect?

I don't know what xvkbd is. How would expect send a keyboard event? If I
stuff one in to an xterm pty it won't be seen by X as an input, but only as
xterm output. I have tried stuffing keyboard events into /dev/tty10 but the
X server running on tty10 doesn't see it (I'm assuming because it accesses
the keyboard at a lower level so it sees the ups and downs, not just the
ASCII queue). Maybe I need to write a kernel patch to inject keyboard events
at a lower level (e.g. key scan code and up/down).

But I still think it is better to identify what bit of code in some component
of the X window system is futzing with the screen blanking and make it stop.

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Relevant Pages

  • Re: How to get X Windows to stop blanking out
    ... |> |> how long with no input before blanking or running the screen saver. ... How would expect send a keyboard event? ... stuff one in to an xterm pty it won't be seen by X as an input, ... at a lower level. ...
    (comp.os.linux.x)
  • Re: How to get X Windows to stop blanking out
    ... How would expect send a keyboard event? ... |> stuff one in to an xterm pty it won't be seen by X as an input, ... |> at a lower level. ... |> of the X window system is futzing with the screen blanking and make it stop. ...
    (comp.os.linux.x)
  • Re: How to get X Windows to stop blanking out
    ... How would expect send a keyboard event? ... |> stuff one in to an xterm pty it won't be seen by X as an input, ... |> at a lower level. ... |> of the X window system is futzing with the screen blanking and make it stop. ...
    (comp.os.linux.x)
  • Re: How to get X Windows to stop blanking out
    ... |>|>|> I want the image (weather radar) to stay on the screen all the time. ... How would expect send a keyboard event? ... |>|> at a lower level. ... |>|> of the X window system is futzing with the screen blanking and make it stop. ...
    (comp.os.linux.x)