Art Alexion on 15 Aug 2010 14:06:20 -0700


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[PLUG] Is kernel hiding my tty*

  • From: Art Alexion <art.alexion@gmail.com>
  • To: plug@lists.phillylinux.org
  • Subject: [PLUG] Is kernel hiding my tty*
  • Date: Sun, 15 Aug 2010 17:06:28 -0400
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  • Reply-to: "Arthur S. Alexion" <art.alexion@gmail.com>, Philadelphia Linux User's Group Discussion List <plug@lists.phillylinux.org>
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Several kernel upgrades ago, I started having problems accessing the virtual 
consoles on my kubuntu 10.04 upgraded box.  Around the same time I had major 
delays logging into kde.  I noticed the former when trying to switch to tty3 
to monitor the latter.  I thought they were related.  I think I was wrong.

These login issues had been traced to mysql in another post.  Nepomuk uses 
mysql.  Turned out nepomuk was having trouble finding the redland backend. 
sudo aptitude install librdf-storage-mysql
seems to have fixed the login problem (though strangely, it was occurring when 
logging into gnome as well).

The tty* access persists, though.  I found a post that suggests:
> Virtual terminals (cntl-alt-1,2,3,4,... do not result in video to the
> monitor (no sync) or a display.
> 
> If I type blind, I can log in, ssh back to my other machine, and create a
> file. So the virtual terminal is there and listening to the keyboard and
> running, just not creating a display.
> 
> This machine has been working fine with 08.10 for quite time up until
> yesterday, so I don't believe it is a hardware problem.

> KMS (Kernel Mode Setting) was selecting the wrong mode. My monitor said
> something like "xyz out of range", vs. "no sync". There are countless
> posts with people having similar problems, mostly with ATI or Intel
> graphics. Mine is an NVidia card (GeForce FX 5200).
> 
> I simply disabled KMS:
> 
> /etc/default/grub chage:
> GRUB_CMDLINE_LINUX=""
> to
> GRUB_CMDLINE_LINUX="nomodeset"

Except, as I mentioned, this is an upgraded box.  When ubuntu included grub2, 
it configured upgrades not to mess with the older grub.  So, even though my 
system is 10.04, I am using 0.97, and the above fix doesn't apply to me.

I found instructions for upgrading to grub2, but would rather not unless 
necessary.  Any ideas how to fix this with "grub1"?


-- 
Art Alexion

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