[Buildroot] frame buffer problems

Bernhard Fischer rep.dot.nop at gmail.com
Fri Apr 6 16:39:50 UTC 2007

On Fri, Apr 06, 2007 at 09:14:33AM -0700, nina.holly at aerende.com wrote:
>    I am using Linux 2.6.10 with devfs on ARM.  I know that
>devfs is deprecated/obsolete.  The framebuffer works fine
>with buildroot svn version 15763.  But when I switched to
>buildroot version 17224 I get a return value < 0 when I try to execute
>ioctl(frame_buffer_ptr, FBIOGET_VSCREENINFO, &var_info);
>I.E. I can't read the basic frame buffer information.
>1.  Is this a problem in the version of buildroot that I am using?
>2.  Is this because buildroot version 17224 doesn't work
>    with devfs and I need to switch to using udev?
>3.  Do I need to use Linux version greater than 2.6.15 (which works
>    with udev) to work with buildroot version 17224?

I'm using with binutils- and gcc-4.2. I have
and use mdev (from buysbox trunk) to create my device nodes, dunno
about udev and don't want to know about devfs anymore ;)
I do use sysfs and configfs, though, the former is required for mdev to

Works fine for me, fwiw.

More information about the buildroot mailing list