nanogui: Problem running Microwindows using framebuffer
Subject:
Re: [nanogui] Problem running Microwindows using framebuffer
From:
"Greg Haerr" ####@####.####
Date:
4 Feb 2003 19:29:59 -0000
Message-Id: <010b01c2cc82$16849e40$3aba46a6@xmission.com>
It sounds like you might not have permissions on /dev/tty0,
or it doesn't exist. When the config file has VTSWITCH=Y,
then code is linked in that opens /dev/tty0 for VT switching.
You might try VTSWITCH=N, and also look at the
HAVETEXTMODE define in drivers/scr_fb.c.
Regards,
Greg
Hi:
I'm trying to use the framebuffer version of Microwindows. The build completes
w/out errors but when running several of the demos I receive the message:
Error can't open /dev/tty0: Permission denied
Cannot initialise screen
I have rebuilt my kernel to enable the framebuffer. This seems to work
correctly. (I see the penguin logo when logging in and I have a small test
program that is able to open /dev/fb0, memory map it, and write to it.)
The results of running fbset produce:
mode "640x480-73"
# D: 30.720 MHz, H; 36.923 kHz, V: 73.260 Hz
geometry 640 480 640 480 16
timings 32552 80 32 16 4 80 4
rgba 5/11,6/5,5/0,0/0
endmode
(This reflects the fact that I selected 311 at the VGA prompt when booting.) As
such, I set the SCREEN_PIXTYPE to MWPF_TRUECOLOR565 in the config file.
My system:
Microwindows: version 0.89
Platform: 600 MHz P3, 256 MB RAM
Linux: Red Hat 7.2 w/ kernel 2.7.17
Gfx Card: NVidia Riva TNT2 M64 (I've configred the framebuffer in the kernel to
use the vesa driver)
Finally, the X11 version of Microwindows works fine.
Any suggestions regarding what I'm doing wrong are greatly appreciated.
Thank you,
pat
