SLES systems are setup so that when you VNC to them, they prompt for user ID
and password.
Red Hat systems do not. In the past, I've been able to get this to work on
RedHat 4 and 5
by making a few changes. But on RHEL 6 I've been struggling. What I've done
so far is:
Install: (Surprisingly, they are not installed by default)
tigervnc-1.0.90-0.10.20100115svn3945.el6.s390x.rpm
tigervnc-server-1.0.90-0.10.20100115svn3945.el6.s390x.rpm
Create /etc/xinetd.d/vnc containing:
# default: off
# description: This serves out a VNC connection which starts at a KDM login \
# prompt. This VNC connection has a resolution of 1024x768, 16bit depth.
service vnc1024
{
disable = no
socket_type = stream
protocol = tcp
wait = no
user = nobody
server = /usr/bin/Xvnc
server_args = :42 -inetd -once -query localhost -geometry 1024x768
-depth 16 -securitytypes=none
type = UNLISTED
port = 5901
}
# default: off
# description: This serves out a VNC connection which starts at a KDM login \
# prompt. This VNC connection has a resolution of 1280x1024, 16bit depth.
service vnc1280
{
disable = no
type = UNLISTED
port = 5902
socket_type = stream
protocol = tcp
wait = no
user = nobody
server = /usr/bin/Xvnc
server_args = :42 -inetd -once -query localhost -geometry
1280x1024 -depth 16 -securitytypes=none
}
# default: off
# description: This serves out a VNC connection which starts at a KDM login \
# prompt. This VNC connection has a resolution of 1600x1200, 16bit depth.
service vnc1600
{
disable = no
type = UNLISTED
port = 5903
socket_type = stream
protocol = tcp
wait = no
user = nobody
server = /usr/bin/Xvnc
server_args = :42 -inetd -once -query localhost -geometry
1600x1200 -depth 16 -securitytypes=none
Update /etc/gdm/custom.conf to contain:
# GDM configuration storage
[daemon]
RemoteGreeter=/usr/libexec/gdm-simple-greeter
[security]
[xdmpc]
Enable=true
[servers]
#0=Standard
[greeter]
[chooser]
[debug]
(I've also tried it with no RemoteGreater keyword).
Update /etc/services with these lines:
vnc1024 5901/tcp # vnc and gdm 1024x768
vnc1280 5902/tcp # vnc and gdm 1280x1024
vnc1600 5903/tcp # vnc and gdm 1600x1200
And finally:
chkconfig vnc off
chkconfig vnc on
service xinetd restart
A reboot didn't help. VNC does get started. If I VNC to the machine, I get an
all black window
and no user ID prompt. I suspect the problem has something to do with the
greeter parameter.
This is running on IBM zSeries (mainframe) but I don't think that's relevant.
--
Chuck Tribolet
[email protected]
http://www.almaden.ibm.com/cs/people/triblet
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