screen garbles up

I don’t really know where to place this. So I’m posting here.

I got blender 2.4a to run in my system:
laptop hp pavillion ze5500 with Fedora Core 5
256mb ram
2.4 ghz pentium 4
mesa 6.5 // maybe 6.3
python 2.4
64 megabyte integrated ati card

Things seem to work fine, until I select one of the axis on the cube. The screen goes crazy and the program becomes unresponsive.

What can I do to resolve this problem. Any pointers appreciated.


you’re using the flgrx driver?

do you have antialiasing turned on?

I tried searching those terms, in google and in blender. But I couldn’t find it. How can I find out?


“until I select one axis of the cube”
can you please explain further?

… your graphics driver [and antialiasing settings if forced always on] are set in /etc/X11/xorg.conf. Not knowing which driver you’re using implies you haven’t messed with this file [I’ve never had automatic configuration work for me, and get me 3d acceleration on ati cards].

The easiest way to find out which drivers you’re using is to post the output of the system-info script [help-> system info, then change the window type to a text window, select the system-info.txt file and save it off, to open in a text editor you can copy from and paste here…]

if you’re using the ati driver it will say something under OpenGL Renderer other than mesa [it will probably say ati technolgies]

mine says:


  • Renderer: GeForce 7600 GS/PCI/SSE2/3DNOW!
  • Vendor: NVIDIA Corporation
  • Version: 2.0.3

[the version is the opengl version, not the driver version]

if however it was the antialiasing setting it would probably be in xorg.conf as something unreadable like Option “AntialiasingMode” “00040020”… hopefully that’s not the case.

here’s my /etc/X11/xorg.conf file and the output of the script you mentioned. I don’t see any enties to opengl in xorg.conf, although I do see my card mentioned. Does that mean that I’m not using the hardware capabilities of my card?

# Xorg configuration created by system-config-display

Section "ServerLayout"
	Identifier     "single head configuration"
	Screen      0  "Screen0" 0 0
	InputDevice    "Mouse0" "CorePointer"
	InputDevice    "Keyboard0" "CoreKeyboard"

Section "Files"
# Multiple FontPath entries are allowed (they are concatenated together)
# By default, a font server independent of the X server is
# used to render fonts.

	FontPath     "unix/:7100"

Section "Module"
	Load  "dbe"
	Load  "extmod"
	Load  "fbdevhw"
	Load  "glx"
	Load  "record"
	Load  "freetype"
	Load  "type1"
	Load  "dri"

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" "us"

Section "InputDevice"
	Identifier  "Mouse0"
	Driver      "mouse"
	Option	    "Protocol" "IMPS/2"
	Option	    "Device" "/dev/input/mice"
	Option	    "ZAxisMapping" "4 5"
	Option	    "Emulate3Buttons" "yes"

Section "Monitor"
	Identifier   "Monitor0"
	VendorName   "Monitor Vendor"
	ModelName    "HP 1024 LCD Flat Panel 14-inch Display"
 ### Comment all HorizSync and VertSync values to use DDC:
	HorizSync    32.0 - 61.0
	VertRefresh  50.0 - 90.0
	Option	    "dpms"

Section "Device"
	Identifier  "Videocard0"
	Driver      "radeon"
	VendorName  "Videocard vendor"
	BoardName   "ATI Technologies Inc Radeon IGP 330M/340M/350M"

Section "Screen"
	Identifier "Screen0"
	Device     "Videocard0"
	Monitor    "Monitor0"
	DefaultDepth     24
	SubSection "Display"
		Viewport   0 0
		Depth     16
		Modes    "800x600" "640x480"
	SubSection "Display"
		Viewport   0 0
		Depth     24
		Modes    "1024x768" "800x600" "640x480"

Section "DRI"
	Group        0
	Mode         0666

=  Blender 2.42 System Information  =

Platform: linux2


- Version: 2.4.1 (#2, May  5 2005, 11:32:06) 
[GCC 3.3.5 (Debian 1:3.3.5-12)]

- Paths:


- Directories:

 Blender home dir:

 Default dir for scripts:

 Default "bpydata/" data dir for scripts:

 User defined dir for scripts:
  <NOTICE> -- not found

 Data dir "bpydata/" inside user defined dir:
  <NOTICE> -- not found

 Default config data "bpydata/config/" dir:


Some expected modules were not found.
Because of that some scripts bundled with Blender may not work.
Please read the FAQ in the Readme.html file shipped with Blender
for information about how to fix the problem.
Missing modules:
-> random
-> repr


- Renderer:   Mesa DRI Radeon 20050528 AGP 4x x86/MMX/SSE2 NO-TCL
- Vendor:     Tungsten Graphics, Inc.
- Version:    1.2 Mesa 6.4.2

- Extensions:

GL_ARB_imaging GL_ARB_multisample GL_ARB_multitexture
GL_ARB_texture_border_clamp GL_ARB_texture_compression
GL_ARB_texture_env_add GL_ARB_texture_env_combine
GL_ARB_texture_env_crossbar GL_ARB_texture_env_dot3
GL_ARB_texture_mirrored_repeat GL_ARB_texture_rectangle
GL_ARB_transpose_matrix GL_ARB_window_pos GL_EXT_abgr GL_EXT_bgra
GL_EXT_blend_color GL_EXT_blend_logic_op GL_EXT_blend_minmax
GL_EXT_blend_subtract GL_EXT_clip_volume_hint
GL_EXT_compiled_vertex_array GL_EXT_convolution GL_EXT_copy_texture
GL_EXT_draw_range_elements GL_EXT_histogram GL_EXT_packed_pixels
GL_EXT_polygon_offset GL_EXT_rescale_normal GL_EXT_secondary_color
GL_EXT_separate_specular_color GL_EXT_stencil_wrap GL_EXT_subtexture
GL_EXT_texture GL_EXT_texture3D GL_EXT_texture_edge_clamp
GL_EXT_texture_env_add GL_EXT_texture_env_combine
GL_EXT_texture_env_dot3 GL_EXT_texture_filter_anisotropic
GL_EXT_texture_lod_bias GL_EXT_texture_mirror_clamp
GL_EXT_texture_object GL_EXT_texture_rectangle GL_EXT_vertex_array
GL_APPLE_packed_pixels GL_ATI_texture_env_combine3
GL_ATI_texture_mirror_once GL_IBM_rasterpos_clip
GL_IBM_texture_mirrored_repeat GL_MESA_ycbcr_texture
GL_MESA_window_pos GL_NV_blend_square GL_NV_light_max_exponent
GL_NV_texture_rectangle GL_NV_texgen_reflection GL_OES_read_format
GL_SGI_color_matrix GL_SGI_color_table GL_SGIS_generate_mipmap
GL_SGIS_texture_border_clamp GL_SGIS_texture_edge_clamp

- Simplistic almost useless benchmark:

Redrawing all areas 10 times took 0.2105 seconds.


(*) Found 1 warning, documented in the text above.

(*) Found 2 notices, documented in the text above.

Actually, it looks like you are using hardware rendering… using the open source radeon driver.

[I’ve never had an old enough card that I had that option, guess what I said about mesa was sort of wrong]

unfortunately I’m still out of ideas.