Arch Linux

estan

Member

Registered: 2011-03-11

Posts: 13

Scrolling on tty1 with KMS modesetting enabled

Hi,

As requested, I'm creating a new thread instead of continuing on this old one from last year.

I'm want to allow scrolling on tty1 without completely disabling KMS modesetting. I'm have Intel integrated graphics.

I've tried the following combination:

1. Enable early boot KMS:

[estan@pyret ~]$ egrep "^MODULES" /etc/mkinitcpio.conf 
MODULES="i915"
[estan@pyret ~]$

2. Disabled clearing of messages:

[estan@pyret ~]$ cat /etc/systemd/system/getty\@tty1.service.d/noclear.conf 
[Service]
TTYVTDisallocate=no
[estan@pyret ~]$

3. Increased the scrollback buffer:

[estan@pyret ~]$ egrep "^GRUB_CMDLINE_LINUX_DEFAULT" /etc/default/grub
GRUB_CMDLINE_LINUX_DEFAULT="fbcon=scrollback:512k"
[estan@pyret ~]$

But still I cannot scroll using Shift+PgUp on tty1. I can see the last half page or so of "[   OK   ] ..." startup messages, but Shift+PgUp does nothing, it's as if the buffer is empty.

I know that I can get boot messages with dmesg / journalctl -b et.c. But I'd like to be able to scroll on tty1 as well.

Any ideas?

Last edited by estan (2015-04-29 12:07:10)

karol

Archivist

Registered: 2009-05-06

Posts: 25,440

Re: Scrolling on tty1 with KMS modesetting enabled

You can scroll on all ttys after the KMS has settled. Run 'ls -a ~' and see if you can scroll.

Is it something 'nice to have' or do you need it?

ewaller

Administrator

From: Pasadena, CA

Registered: 2009-07-13

Posts: 19,804

Re: Scrolling on tty1 with KMS modesetting enabled

Not a direct solution to your problem, but have you tried terminal or tmux  ?

---

Nothing is too wonderful to be true, if it be consistent with the laws of nature -- Michael Faraday
Sometimes it is the people no one can imagine anything of who do the things no one can imagine. -- Alan Turing
---
How to Ask Questions the Smart Way