On Donnerstag 03 November 2005 22:28, Josh Babcock wrote: > Mathias Fröhlich wrote: > > Now using fglrx with a newer radeon on that machine. Since that it works > > fine ... > > Hmm, after much pain and suffering I have installed fglrx on my machine. > Good news: all my OpenGL apps work fine. Bad news: except FlightGear. > > It just falls back to software rendering. What X system are you using? > Xorg of XF86? can you send me your xorg.conf or XF86Config-4 file? I > want to see if it's a configuration option that's causing the problem.
Hmm, OpenGL on Linux is fun ... :-/ I use a recent update of xorg from Fedora core 4 without local modifications, that is at the moment xorg-x11-6.8.2-37.FC4.49.2. I also use the fglrx from the livna yum repository. They often fix some bugs in the official ati fglrx code in their rpms. This version is currently ati-fglrx-8.18.6.1-0.lvn.1.4. For such fixes, look into their src rpms. Attached is my xorg.conf from that machine. But at the current state flightgear crashes on exit somewhere in GL, but only on the fglrx machine ... At work, I work (at least partly) in a team doing OpenGL based 3D visualization of fluid dynamics. Some of the most strange problem reports originate from machines with ATI cards. All our development machines (except some machines used for testing and reproducing that strange problems) are equipped with NVidia cards. I personally like the ATI cards much more since ATI ever released some specs about their cards to the open source community, so there was some hope that well doing drivers will appear. But looking at those problems with ATIs closed source drivers, I must say that NVidia seems to work better. On the other hand, many people see massive performance hits with current NVidia drivers in presence of OpenGL points (all our lights are such points ...). The NVidia card at work does not show any problem with FG at night, but that one is a extremely expensive Quadro card certified for professional CAD use (often many points/lines). Since the performance hit with points seemed to have begun at a specific driver version, it comes in mind that NVidia might want people drawing lines and points not needed for most 3D games pay much for their professional cards? You remember the driver limitation in the windows nvidia drivers not enabling sli with non nvidia mainboard chipsets, even when old drivers showed promising results with all chipsets ... All together no 'better choice' ... Greetings Mathias -- Mathias Fröhlich, email: [EMAIL PROTECTED]
# XFree86 4 configuration created by pyxf86config Section "ServerLayout" Identifier "Default Layout" Screen 0 "Screen0" 0 0 InputDevice "Mouse0" "CorePointer" InputDevice "Keyboard0" "CoreKeyboard" EndSection Section "Files" # RgbPath is the location of the RGB database. Note, this is the name of the # file minus the extension (like ".txt" or ".db"). There is normally # no need to change the default. # Multiple FontPath entries are allowed (they are concatenated together) # By default, Red Hat 6.0 and later now use a font server independent of # the X server to render fonts. RgbPath "/usr/X11R6/lib/X11/rgb" FontPath "unix/:7100" EndSection Section "Module" Load "dbe" SubSection "extmod" Option "omit xfree86-dga" # don't initialise the DGA extension EndSubSection # Load "fbdevhw" Load "glx" Load "record" Load "freetype" Load "type1" Load "dri" EndSection Section "InputDevice" # Specify which keyboard LEDs can be user-controlled (eg, with xset(1)) # Option "Xleds" "1 2 3" # To disable the XKEYBOARD extension, uncomment XkbDisable. # Option "XkbDisable" # To customise the XKB settings to suit your keyboard, modify the # lines below (which are the defaults). For example, for a non-U.S. # keyboard, you will probably want to use: # Option "XkbModel" "pc102" # If you have a US Microsoft Natural keyboard, you can use: # Option "XkbModel" "microsoft" # # Then to change the language, change the Layout setting. # For example, a german layout can be obtained with: # Option "XkbLayout" "de" # or: # Option "XkbLayout" "de" # Option "XkbVariant" "nodeadkeys" # # If you'd like to switch the positions of your capslock and # control keys, use: # Option "XkbOptions" "ctrl:swapcaps" # Or if you just want both to be control, use: # Option "XkbOptions" "ctrl:nocaps" # Identifier "Keyboard0" Driver "kbd" Option "XkbModel" "pc105" Option "XkbLayout" "de" Option "XkbVariant" "nodeadkeys" EndSection Section "InputDevice" Identifier "Mouse0" Driver "mouse" Option "Protocol" "IMPS/2" Option "Device" "/dev/input/mice" Option "ZAxisMapping" "4 5" # Option "Emulate3Buttons" "yes" EndSection Section "Monitor" Identifier "Monitor0" VendorName "Monitor Vendor" ModelName "NEC MultiSync LCD2080UX" HorizSync 20.0 - 75 VertRefresh 43.0 - 72.0 # Option "dpms" EndSection Section "Device" Identifier "Videocard0" Driver "radeon" VendorName "Videocard vendor" BoardName "ATI Radeon" Option "MonitorLayout" "TMDS, NONE" # Option "AGPMode" "4" # Option "DDCMode" "on" # BusID "PCI:3:0:0" EndSection Section "Device" Identifier "ATI Graphics Adapter" Driver "fglrx" Option "no_accel" "no" Option "no_dri" "no" Option "MonitorLayout" "AUTO, NONE" Option "NoTV" "yes" Option "FSAAEnable" "yes" Option "FSAAScale" "2" Option "UseInternalAGPGART" "yes" Option "UseFastTLS" "2" BusID "PCI:3:0:0" EndSection Section "Screen" Identifier "Screen0" # Device "Videocard0" Device "ATI Graphics Adapter" Monitor "Monitor0" DefaultDepth 24 SubSection "Display" Viewport 0 0 Depth 24 Modes "1600x1200" EndSubSection EndSection Section "DRI" Group 0 Mode 0666 EndSection
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