Solved

/dev/ptmx: device not found

Posted on 1999-01-12
3
373 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
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
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

NFR key for Veeam Backup for Microsoft Office 365

Veeam is happy to provide a free NFR license (for 1 year, up to 10 users). This license allows for the non‑production use of Veeam Backup for Microsoft Office 365 in your home lab without any feature limitations.

Question has a verified solution.

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

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.
Join Greg Farro and Ethan Banks from Packet Pushers (http://packetpushers.net/podcast/podcasts/pq-show-93-smart-network-monitoring-paessler-sponsored/) and Greg Ross from Paessler (https://www.paessler.com/prtg) for a discussion about smart network …
Internet Business Fax to Email Made Easy - With  eFax Corporate (http://www.enterprise.efax.com), you'll receive a dedicated online fax number, which is used the same way as a typical analog fax number. You'll receive secure faxes in your email, f…
Get a first impression of how PRTG looks and learn how it works.   This video is a short introduction to PRTG, as an initial overview or as a quick start for new PRTG users.

749 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