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Old 01-15-2011, 10:52 AM   #1
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/dev/fb0: No such file or directory

I'm attempting to use fbgrab and fbcat, but it requires /dev/fb0 to exist. I've checked in /dev/ and it unfortunately doesn't exist

How can I create this file? My computer specs are in my signature and I'm using the proprietary ATI Radeon 4500 graphics driver
Old 01-15-2011, 10:56 AM   #2
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Did you look at the Frambuffer HowTo page that is linked from the fbgrab home page?
Old 01-15-2011, 11:01 AM   #3
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I've tried reading up on the part specific to ATI cards but I don't trust instructions that are untested.
Old 01-15-2011, 01:15 PM   #4
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You will want to use the vesa framebuffer if you are going to stick with the proprietary drivers. Assuming your kernel has support for it, you'll need to pass vga=somemode to the kernel. Check the "What VESA modes are available to me?" part of the document you were looking at.

Old 01-17-2011, 07:16 AM   #5
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1. first check that framebuffer is enabled in your kernel
Execute this command
zcat /proc/config.gz | grep -v '^#' | grep FB
It should return something like
2. If the answer is yes you should have in your boot options
(your grub menu or lilo menu) something like
or vga=792, etc. according to your screen size and resolution
(If you have a 15-inch, 791 should be fine)

If framebuffer is not enabled in your kernel you'll have to
rebuild the kernel by enabling these options first


ati, xorg

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