nanogui: Work on ARM?
Subject:
RE: Work on ARM?
From:
Alexander Weir ####@####.####
Date:
21 Feb 2000 09:34:22 -0000
Message-Id: <B3141FC55138D311BE550090274DD78215BE06@svr6-livingston.Cadence.COM>
Eric,
I suspect your problem is even more straight forward than this. If you've
compiled your Kernel using the default configuration settings for the brutus
board;
ie. make brutus_config
then you will almost certainly have framebuffer suport.
What I suspect you need to do is create the framebuffer device before you
run your demos.
ie. mknod /dev/fb0 c 29 0
Of course, if you updated your Ramdisk you wouldn't need to do this each
time you want to use the framebuffer device. I would suggest you try this
before re-compiling your kernel.
Best Regards,
Sandy Weir
-----Original Message-----
From: Greg Haerr ####@####.####
Sent: Saturday, February 19, 2000 8:29 PM
To: ####@####.#### ####@####.####
Cc: ####@####.####
Subject: Re: Work on ARM?
: And then I tried to run the bin/world directly('coz I opt
: LINK_SERVER_WITH_APP Y), it's also erro. It says:
: Error opening /dev/fb0: No such file or directory
: Cannot initialise screen: No such file or directory
: Cannot open graphics
:
: How to get a /dev/fb0??
:
: My arm linux version: 2.2.14, gcc-2.95.2, glibc-2.1.2,
: binutils-2.9.5.0.22. Hope anybody can give me some clues.
2.2.14 must be setup to support framebuffer. The framebuffer
HOWTO is in microwin/src/INSTALL. However, make sure
that you have the following set in your kernel .config, or /dev/fb0
can't be opened, which means you don't have a framebuffer:
CONFIG_FB=y
CONFIG_DUMMY_C ONSOLE=y
CONFIG_FB_xxx=y where xxx is your kernel hw for framebuffer support
CONFIG_FBCON_ADVANCED=y
and then the
CONFIG_FBCON_CFB8=y and others to match your
framebuffer resolution.
If your kernel isn't compiled right, /dev/fb0 open will fail,
just like you're getting.
Regards,
Greg
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