This section describes the changes to the LynxOS environment which may be necessary to successfully run XFree86.
Read Quick-Start Guide to XFree86 Setup to learn more about how to configure XFree86 for your hardware.
A minimum of 16MB of memory is required to run X. If you want to run real-world applications you should think of upgrading to 32MB (or more).
To reasonably run XFree86 you may have to adjust a few system parameters.
On LynxOS 2.5.x and 3.0.x include a line
For earlier versions you'll have to edit
Tunable Old New USR_NFDS number of open files per process 20 64 NPROC number of tasks 50 150 NFILES number of open files in system 100 250 NINODES number of incore inodes (same value as NFILES) QUANTUM clock ticks until preemption 64 20 CACHEBLKS number of cache memory blocks 202 >= 4096
The new values are those suggested by the LynxOS documentation for their X Window package.
/sys/lynx.os/uparam.hfrom 10 to 20.
You should also increase the number of ptys to be able run a couple
more xterms. You may replace
If you plan to use PS/2 or Bus mice refer to the following section before rebuilding the kernel, if not, you should rebuild the kernel now:
# cd /sys/lynx.os # make install # reboot -N
XFree86 includes support for PnP mice (see also Mouse Support in XFree86). The current LynxOS TTY device driver doesn't allow the necessary manipulation of the RTS line and therefore the support for PnP mice has been disabled for LynxOS.
Starting with LynxOS x86 2.4.0 LynxOS includes a PS/2 mouse driver. This driver does protocol conversion and requires to specify the mouse type as Microsoft regardless of real mouse type. In some cases you won't have all mouse buttons supported.
The PS/2 mouse driver included in LynxOS x86 3.0.1 patch #XXX does not perform protocol conversion and requires to set the mouse type to PS/2. This driver will also support the extended PS/2 mouse types.
/usr/X11R6/lib/X11/etc/BM-Lynx.shar contains a LynxOS port
of the Linux bus mouse drivers. To install the drivers
unpack the shar archive
# cd / # bash /usr/X11R6/lib/X11/etc/BM-Lynx.shar
and follow the notes in
/BMOUSE.Readme for further installation and
The XFree86 PS/2 mouse driver works also with MetroLink X 184.108.40.206 as shipped with LynxOS x86 2.4.0 unless you have the LynxOS patch 000055-00 installed.
The XFree86 servers will only run with the default LynxOS console driver, sorry for those of you who use the alternative vdt console driver. Currently there is no support for virtual terminal switching once the server has started.
You will need a free console which the X server will use for
keyboard input. You must disable login on at least one of the four
virtual terminals in
The XFree86 X servers will produce a lot of diagnostics output on stderr during startup. This output will be lost after the server reached a certain point in its console initialization process. You should redirect stdout and stderr if you want to analyze the diagnostics produced by the server.
When the X server is running output made to other consoles will be lost. After server shutdown the screen contents of other consoles may be inconsistent with what one would expect (i.e. random).