Solved

/dev/ptmx: device not found

Posted on 1999-01-12
3
367 Views
Last Modified: 2013-12-23
I have about 65 users logging into a SPARC20 server
(running Solaris 2.6).  These users are accessing the server
via Exceed on their PCs (telnet or rlogin sessions).  10 - 15
of these users get an error message that says "/dev/ptmx:
device not found" and are unable to log in.  What could be
the problem here?
0
Comment
Question by:wpmorris
3 Comments
 
LVL 51

Expert Comment

by:ahoffmann
ID: 1582892
Your system ranout of pseudo-ttys.
AFAIK, the number of pseudo-ttys is limited in the kernel.
I'm not shure if you simply kan create new pseudo-ttys just by createing new devices in /dev/pts.
see man ptm
0
 

Expert Comment

by:dougwinter
ID: 1582893
man page for pts(7D) says:


The pseudo-tty subsystem simulates  a  terminal  connection,
where  the master side represents the terminal and the slave
represents the user process's special device end point.   In
order to use the pseudo-tty subsystem, a node for the master
side driver /dev/ptmx and N nodes for the slave driver (N is
determined  at  installation  time)  must  be installed. The
names of the slave devices are /dev/pts/M where  M  has  the
values 0 through N-1.

Anyone know what package you have to (re-)install to set this?


0
 

Accepted Solution

by:
rfross earned 150 total points
ID: 1582894
add the following to /etc/system, where value is the new number
of ptys:

set pt_cnt=value      
set npty=same_value_as_pt_cnt
set sad_cnt=2_times_pt_cnt value
set nautopush=same_value_as_ pt_cnt

Then reboot/reconfigure with:

# reboot -- -r     OR

# touch /reconfigure; reboot   OR

# init 0
ok boot -r

0

Featured Post

Connect further...control easier

With the ATEN CE624, you can now enjoy a high-quality visual experience powered by HDBaseT technology and the convenience of a single Cat6 cable to transmit uncompressed video with zero latency and multi-streaming for dual-view applications where remote access is required.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

If your business is like most, chances are you still need to maintain a fax infrastructure for your staff. It’s hard to believe that a communication technology that was thriving in the mid-80s could still be an essential part of your team’s modern I…
Data center, now-a-days, is referred as the home of all the advanced technologies. In-fact, most of the businesses are now establishing their entire organizational structure around the IT capabilities.
Viewers will learn how to connect to a wireless network using the network security key. They will also learn how to access the IP address and DNS server for connections that must be done manually. After setting up a router, find the network security…
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…

840 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question