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Old 01-06-2018, 08:58 PM   #1
chblock
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Startup Question


Hello guys,

Been away from Debian since Etch and I'm messing around with Jessie now. A lot of changes since I last used Debian. I have a question about startup.

With Etch startup the console would scroll several pages of kernel output then stop at the bottom with a login prompt. It left the scrollback buffer intact allowing me to review output. I found it handy for checking things when building custom kernels. I know I can use dmesg, but I could actually go back further with the scrollback buffer, all the way to the last page of BIOS output.

Is there any way in Jessie I can get that same behavior? Jessie resets the terminal and and flushes the buffer when the console shell starts up.
 
Old 01-07-2018, 06:05 AM   #2
ondoho
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Quote:
Originally Posted by chblock View Post
Is there any way in Jessie I can get that same behavior? Jessie resets the terminal and and flushes the buffer when the console shell starts up.
https://wiki.archlinux.org/index.php...s&oldid=231059
https://bbs.archlinux.org/viewtopic....600216#p600216
i hope these apply to debian as well.
 
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Old 01-07-2018, 04:31 PM   #3
chblock
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Thanks, I'll look in my system and see if that applies. Should be the same, new to systemd so I'm just learning my way around it.
 
Old 01-07-2018, 05:03 PM   #4
Lysander666
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I think this is what you want. Of course it will work for both Jessie and Stretch.

https://mike632t.wordpress.com/2015/...ssages-jessie/
 
Old 01-07-2018, 07:36 PM   #5
chblock
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Originally Posted by ondoho View Post
Perfect, that did the trick. Though the procedure makes it look a bit more convoluted than it needs to be. It's simply a matter of changing TTYVTDisallocate= from yes to no in the getty@.service file. Pretty simple really.

Happy my console looks like it did in Etch, using kernel boot option nosetmode to run it in VGA mode. Don't really understand the installation logic in putting the VTs at my HD monitor's native resolution. About the only thing I use the VTs for is to review the console then launch X windows. For any kind of actual work, I go to X. The console at my monitor's native resolution makes the font tiny in the far left of the screen, hard to see for me.

I have another question. I can shut off the kernel time stamp with a boot option, but systemd still puts one on lines when the kernel hands over control. Any way to shut off the systemd timestamp?
 
Old 01-07-2018, 07:42 PM   #6
chblock
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Originally Posted by Lysander666 View Post
I think this is what you want. Of course it will work for both Jessie and Stretch.

https://mike632t.wordpress.com/2015/...ssages-jessie/
Thanks, but I was almost shocked to see the quiet boot the first time I started the system. So that was like first on my list to get console output back. Was easy to find the solution for that with a search. Couldn't find anything on the terminal clearing the buffer on tty startup so I asked here.

I still have one other problem with viewing console output, but I'll fix that with a kernel build. There's an option to use an amount of system ram instead the default limited amount of video ram. So the scrollback buffer doesn't store enough pages for me right now. The only way to fix that is with a kernel build which I'm planning to do anyway.

Last edited by chblock; 01-07-2018 at 08:06 PM.
 
  


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