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Old 09-11-2008, 11:35 AM   #1
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LibOSMesa absence leads to j602a graphics failure

On Slackware-12.1 j602a is installed but fails in its graphical demonstrations with the message: "testdlls''; OpenGL create context failed. OpenGL not available."
It is suggested that the cause is the absence of LibOSMesa, and indeed it is not there, nor can slapt-get find it.
Is there an appropriate version, and if so, how can I get it?
Old 09-12-2008, 07:42 AM   #2
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Distribution: Slackware64 14.2 Solus
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What video card do you have? What video driver are you using? How is it configured in xorg.conf?
Old 09-13-2008, 09:07 AM   #3
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LibOSMesa required?

Thank you for your reply. The details are as follows:

Graphics card: GeForce2 MX/MX 400
NVIDIA driver 96.43.05
X server 1.4.2 (10402000)
Screen HP w2007

(Everything set or modified from the default is copied below)

# ModulePath "/usr/lib/xorg/modules"
RgbPath "/usr/share/X11/rgb"
FontPath "/usr/share/fonts/misc"
FontPath "/usr/share/fonts/OTF"
FontPath "/usr/share/fonts/TTF"
FontPath "/usr/share/fonts/Type1"
FontPath "/usr/share/fonts/Speedo"
FontPath "/usr/share/fonts/75dpi:unscaled"
FontPath "/usr/share/fonts/100dpi:unscaled"
FontPath "/usr/share/fonts/cyrillic"
FontPath "/usr/local/share/fonts"

# This loads the GLX module
Load "dbe" # Double buffer extension
SubSection "extmod"
Option "omit xfree86-dga" # don't initialise the DGA extension
Load "type1"
Load "freetype"
#Load "speedo"
Load "glx"

Identifier "Keyboard1"
Driver "kbd"
Option "XkbModel" "pc105"
Option "XkbLayout" "gb"

Identifier "Mouse1"
Driver "mouse"
Option "Protocol" "PS/2"
# The mouse device. The device is normally set to /dev/mouse,
Option "Device" "/dev/mouse"
# Option "Device" "/dev/psaux"

Identifier "My Monitor"
HorizSync 50.0 - 76.0
VertRefresh 24.0 - 76.0

Section "Device"

#VideoRam 4096
# Insert Clocks lines here if appropriate
Identifier "VESA Framebuffer"
Driver "nvidia"

Identifier "Screen 1"
Device "VESA Framebuffer"
Monitor "My Monitor"
DefaultDepth 24
SubSection "Display"
Depth 8
Modes "1680x1050" "1024x768" "800x600" "640x480"
SubSection "Display"
Depth 16
Modes "1680x1050" "1024x768" "800x600" "640x480"
SubSection "Display"
Depth 24
Modes "1680x1050" "1024x768" "800x600" "640x480"
SubSection "Display"
Depth 32
Modes "1024x768" "800x600" "640x480"

Your reply reminded me how old the graphics card is. The machine has 256 MB of RAM and a 900 MHz processor.
The J language's help files pointed to the LibOSMesa's absence being a possible cause.
I had recently upgraded Slackware-12.1 via Slackware itself using slapt-get, since which time invoking a screen saver or, for example, the OpenGL item on the KDE info form, causes a crash requiring a re-set.



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