Message "Input not supported" on reboot after upgrading to 12.04.

Asked by Diego Reyes

The upgrade from 11.10 to 12.04 went well but after restart, booting stops with the message, "Input not supported." I have been using Ubuntu on this computer since 2010 with 10.04 LTS until last year when I upgraded to 11.04, then 11.10. I haven't had any problems until now.

I have a home-assembled computer with an intel 64-bit processor, 2GB ram, two hard drives--2TB Hitachi and 512GB Samsung. How can I resolve this problem?

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Diego Reyes (diego-reyes8) said :
#1

I have an ECS P4M800-7 motherboard with VIA chipset and AMI bios.

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actionparsnip (andrew-woodhead666) said :
#2

What video chip do you use?

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Diego Reyes (diego-reyes8) said :
#3

I use the on-board S3 Unichrome Pro video graphics.

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actionparsnip (andrew-woodhead666) said :
#4

Try the boot option:

nomodeset

May help

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Diego Reyes (diego-reyes8) said :
#5

I edited GRUB and added "nomodeset" but it didn't make any difference. I'm still getting the error message. I'm now thinking of re-installing 11.10.

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Sam_ (and-sam) said :
#6

Seems a monitor vs pangolin conflict. In the meantime try the gfxmode workaround.
http://ubuntuforums.org/showthread.php?t=1769385

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