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Re: [PATCH v7 0/3] console: Add persistent scrollback buffers for all VGA consoles

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Hi Andrey,

On Di, 2016-11-29 at 10:01 +0000, Andrey Utkin wrote:
> On Mon, Nov 28, 2016 at 10:28:19PM +0100, Manuel Schölling wrote:
> Regarding logout scrollback clearing not working for me. ncurses-6.0-rc1
> which I tested it with is the latest available in Gentoo portage, please
> confirm whether I need any newer version, or should I tune something
> else. I'd appreciate if you also tested your patch with gentoo setup.

I finally setup gentoo running agetty (util-linux-2.26.2) and patching
the file term-utils/agetty.c with

static void termio_clear(int fd)
{
	/*
	 * Do not write a full reset (ESC c) because this destroys
	 * the unicode mode again if the terminal was in unicode
	 * mode.  Also it clears the CONSOLE_MAGIC features which
	 * are required for some languages/console-fonts.
	 * Just put the cursor to the home position (ESC [ H),
	 * erase everything below the cursor (ESC [ J), and set the
	 * scrolling region to the full window (ESC [ r)
	 */
-	write_all(fd, "\033[r\033[H\033[J", 9);
+	write_all(fd, "\033[3J\033[r\033[H\033[J", 13);
}

solves the issue with the scrollback buffer after log out.
Let me know if you agree that this is the right way to go and I will
send a patch to the maintainer of util-linux.

Thanks again for spending all this time to test the patch!

Have a good weekend!

Manuel

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[PATCH v7 0/3] console: Add persistent scrollback buffers for all VGA consoles Manuel Schölling <manuel.schoelling@gmx.de> - 2016-11-27 18:00 +0100
  Re: [PATCH v7 0/3] console: Add persistent scrollback buffers for  all VGA consoles Andrey Utkin <andrey_utkin@fastmail.com> - 2016-11-27 22:40 +0100
    Re: [PATCH v7 0/3] console: Add persistent scrollback buffers for  all VGA consoles Adam Borowski <kilobyte@angband.pl> - 2016-11-28 00:20 +0100
      Re: [PATCH v7 0/3] console: Add persistent scrollback buffers for  all VGA consoles Jakub Wilk <jwilk@jwilk.net> - 2016-11-28 00:40 +0100
      Re: [PATCH v7 0/3] console: Add persistent scrollback buffers for  all VGA consoles Andrey Utkin <andrey_utkin@fastmail.com> - 2016-11-28 01:10 +0100
    Re: [PATCH v7 0/3] console: Add persistent scrollback buffers for  all VGA consoles Manuel Schölling <manuel.schoelling@gmx.de> - 2016-11-28 22:30 +0100
      Re: [PATCH v7 0/3] console: Add persistent scrollback buffers for  all VGA consoles Andrey Utkin <andrey_utkin@fastmail.com> - 2016-11-29 11:10 +0100
        Re: [PATCH v7 0/3] console: Add persistent scrollback buffers for  all VGA consoles Adam Borowski <kilobyte@angband.pl> - 2016-11-29 11:50 +0100
        Re: [PATCH v7 0/3] console: Add persistent scrollback buffers for  all VGA consoles Manuel Schölling <manuel.schoelling@gmx.de> - 2016-11-29 17:40 +0100
        Re: [PATCH v7 0/3] console: Add persistent scrollback buffers for  all VGA consoles Manuel Schölling <manuel.schoelling@gmx.de> - 2016-12-01 22:10 +0100
          Re: [PATCH v7 0/3] console: Add persistent scrollback buffers for  all VGA consoles Andrey Utkin <andrey_utkin@fastmail.com> - 2016-12-01 22:40 +0100
  Re: [PATCH v7 0/3] console: Add persistent scrollback buffers for  all VGA consoles Adam Borowski <kilobyte@angband.pl> - 2016-11-28 01:00 +0100
    Re: [PATCH v7 0/3] console: Add persistent scrollback buffers for  all VGA consoles Manuel Schölling <manuel.schoelling@gmx.de> - 2016-11-28 22:30 +0100

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