Re: [debian-knoppix] console goes blank
On Tue, Feb 15, 2005 at 04:10:37AM -0600, Michael Grenier wrote:
> We have about 60 PCs running Knoppix at the office and its been really nice.
> A new problem however showed up when we switch to an flat panel monitor
> on these older desktop computers. Basically if we boot into console mode
> i.e. KNOPPIX 2 at the boot prompt, the screen goes blank. The monitor
> puts up a quick diagnostic that the video mode requested is not supported.
>
> If I wait until the CDROM light goes out and then manually start X windows
> (while not seeing what I'm typing), X windows starts fine. Booting Knoppix
> in normal runlevel 5 also works fine.
>
> Its just console mode thats broke (Includes hitting cntrl-alt-F1, etc).
> Is there a boot option that allows me to specify the video mode used
> for the console text? If memory serves, I thought it picks one from the
> BIOS but of course, the BIOS in this computer knows nothing about the flat
> panel monitor.
>
> Note that LILO boot screen is fine and the help text (F2, F3) displays fine.
> Its only after the kernel loads that the screen goes blank.
Sounds like the framebuffer mode of your graphics card (or the low frequency
modes of your monitors) is very broken, so booting with
knoppix vga=normal
will probably help.
Regards
-Klaus Knopper
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