Hi

I have been struggling with this problem for a while, hope some of you out
there can help, basically, I would like to access a linux file server using
VNC client and run KDE desktop, currently, I can connect if I use GNOME
desktop, if I use KDE, it just give me a blank screen.

The following is my network configuration:

Server: Compaq AP550 (as Linux file Server in a network closet, no keyboard,
no mouse attached)
OS on server : Mandrake 9.1
XFree86 : 4.3.0
Network : 100M Ethernet
Clients : W2K connect to Compaq AP550 linux server using VNC client (GNOME
desktop runs fine)

Problem : If I attach a mouse and keyboard to the linux server, select KDE as
desktop and login, KDE runs perfectly, however, when I try accessing the
server using VNC client, GNOME desktop runs but KDE desktop will not come
up, it gives me a blank screen but logs the following in .xsession-errors:

------------------------------------------------------------------------------------
Xlib: extension "GLX" missing on display ":1.0".
Xlib: extension "GLX" missing on display ":1.0".
Xlib: extension "RENDER" missing on display ":1.0".
mcop warning: user defined signal handler found for SIG_PIPE, overriding
*** kdesktop (3478) got signal 11
Xlib: extension "GLX" missing on display ":1.0".
Xlib: extension "GLX" missing on display ":1.0".
Xlib: extension "RENDER" missing on display ":1.0".
Xlib: extension "RENDER" missing on display ":1.0".
Xlib: extension "RENDER" missing on display ":1.0".
mcop warning: user defined signal handler found for SIG_PIPE
-------------------------------------------------------------------------------------

I read many articles concerning issues with NVIDIA graphics card so I
included part of XF86Config-4 files for your review, I even recently tried commenting out the LOAD "GLX" line but the problem persists.

---------------------------------------------------------------------------------------
Section "Files"
# Multiple FontPath entries are allowed (they are concatenated together)
# By default, Mandrake 6.0 and later now use a font server independent of
# the X server to render fonts.
FontPath "unix/:-1"
EndSection

Section "ServerFlags"
#DontZap # disable <Crtl><Alt><BS> (server abort)
#DontZoom # disable <Crtl><Alt><KP_+>/<KP_-> (resolution switching)
AllowMouseOpenFail # allows the server to start up even if the mouse doesn't work
EndSection

Section "Module"
Load "dbe" # Double-Buffering Extension
Load "v4l" # Video for Linux
Load "extmod"
Load "type1"
Load "freetype"
Load "glx" # 3D layer
EndSection

Section "InputDevice"
Identifier "Keyboard1"
Driver "Keyboard"
Option "XkbModel" "pc105"
Option "XkbLayout" "us"
Option "XkbCompat" ""
Option "XkbOptions" ""
EndSection

Section "InputDevice"
Identifier "Mouse1"
Driver "mouse"
Option "Protocol" "IMPS/2"
Option "Device" "/dev/psaux"
Option "ZAxisMapping" "4 5"
EndSection

Section "Monitor"
Identifier "monitor1"
VendorName "Plug'n Play"
ModelName "Sony CPD-G400"
HorizSync 30-107
VertRefresh 48-120

# Sony Vaio C1(X,XS,VE,VN)?
# 1024x480 @ 85.6 Hz, 48 kHz hsync
ModeLine "1024x480" 65.00 1024 1032 1176 1344 480 488 494 563 -hsync -vsync

# TV fullscreen mode or DVD fullscreen output.
# 768x576 @ 79 Hz, 50 kHz hsync
ModeLine "768x576" 50.00 768 832 846 1000 576 590 595 630

# 768x576 @ 100 Hz, 61.6 kHz hsync
ModeLine "768x576" 63.07 768 800 960 1024 576 578 590 616
EndSection

Section "Device"
Identifier "device1"
VendorName "nVidia Corporation"
BoardName "RIVA TNT2"
Driver "nvidia"
Option "DPMS"
EndSection
-------------------------------------------------------------------------------------------------------------------

If I VNC to the server using GNOME desktop, open a terminal window andtype
"startkde", I get pretty well the same error messages.

Questions:

. How do I fix that? I would like to use KDE since I prefer it better than
GNOME
. Which file is being used XF86Config or XF86Config-4, do I need both?
. If I make changes to XF86Config or XF86Config-4, do I have to reboot for
it to take effect?

This really puzzled me, any help is appreciated.

Thanks

hi,
I think this has to do with Qt being compiled to use
anti-aliased (tt) fonts (-xft configure option)

i'm not 100% sure but i think it's a limitation of vnc
you might have to replace Qt libs with non anti-aliased ones
to get it to work ??

the only other thing i can think to try is set to boot to text mode
then before you startx from the command prompt to start kde type
export QT_XFT=false
then
startx
and see if it works

no need to mess with the x settup on the server i don't think

could be missing something that's required. Do:

xdpyinfo|grep RENDER

If you see RENDER than you got it if not you may need to install the appropiate extension/s (xrender, or gl etc.).

jev-bird;

The command return nothing, so if I have to install the extensions xrender or glx, how do I go about doing it?



foo_bar_foo;

Not sure how to do this from VNC, I am running runlevel 5 at the server end, how do I boot the server in text mode and still access from PC clients?

Thanks for both your help