Same problem here with nvidia Geforce FX 5500 after updating to KDE 4.5. When enabling Composite and OpenGL X start to blink. Before updating composite worked flawlessly.
When Compositing disabled, the problem disappears.
$glxinfo
ame of display: :0.0
display: :0 screen: 0
direct rendering: Yes
server glx vendor string: NVIDIA Corporation
server glx version string: 1.4
server glx extensions:
GLX_EXT_visual_info, GLX_EXT_visual_rating, GLX_SGIX_fbconfig,
GLX_SGIX_pbuffer, GLX_SGI_video_sync, GLX_SGI_swap_control,
GLX_EXT_texture_from_pixmap, GLX_ARB_multisample, GLX_NV_float_buffer
client glx vendor string: NVIDIA Corporation
client glx version string: 1.4
client glx extensions:
GLX_ARB_get_proc_address, GLX_ARB_multisample, GLX_EXT_visual_info,
GLX_EXT_visual_rating, GLX_EXT_import_context, GLX_SGI_video_sync,
GLX_NV_swap_group, GLX_NV_video_out, GLX_SGIX_fbconfig, GLX_SGIX_pbuffer,
GLX_SGI_swap_control, GLX_NV_float_buffer, GLX_ARB_fbconfig_float,
GLX_EXT_fbconfig_packed_float, GLX_EXT_texture_from_pixmap,
GLX_EXT_framebuffer_sRGB, GLX_NV_present_video
GLX version: 1.3
GLX extensions:
GLX_EXT_visual_info, GLX_EXT_visual_rating, GLX_SGIX_fbconfig,
GLX_SGIX_pbuffer, GLX_SGI_video_sync, GLX_SGI_swap_control,
GLX_EXT_texture_from_pixmap, GLX_ARB_multisample, GLX_NV_float_buffer,
GLX_ARB_get_proc_address
OpenGL vendor string: NVIDIA Corporation
OpenGL renderer string: GeForce FX 5500/AGP/SSE2
OpenGL version string: 2.1.2 NVIDIA 173.14.27
OpenGL shading language version string: 1.20 NVIDIA via Cg compiler
OpenGL extensions:
Same problem here with nvidia Geforce FX 5500 after updating to KDE 4.5. When enabling Composite and OpenGL X start to blink. Before updating composite worked flawlessly.
When Compositing disabled, the problem disappears.
$glxinfo
ame of display: :0.0 EXT_visual_ info, GLX_EXT_ visual_ rating, GLX_SGIX_fbconfig, SGIX_pbuffer, GLX_SGI_video_sync, GLX_SGI_ swap_control, EXT_texture_ from_pixmap, GLX_ARB_ multisample, GLX_NV_float_buffer ARB_get_ proc_address, GLX_ARB_ multisample, GLX_EXT_ visual_ info, EXT_visual_ rating, GLX_EXT_ import_ context, GLX_SGI_video_sync, NV_swap_ group, GLX_NV_video_out, GLX_SGIX_fbconfig, GLX_SGIX_pbuffer, SGI_swap_ control, GLX_NV_ float_buffer, GLX_ARB_ fbconfig_ float, EXT_fbconfig_ packed_ float, GLX_EXT_ texture_ from_pixmap, EXT_framebuffer _sRGB, GLX_NV_ present_ video EXT_visual_ info, GLX_EXT_ visual_ rating, GLX_SGIX_fbconfig, SGIX_pbuffer, GLX_SGI_video_sync, GLX_SGI_ swap_control, EXT_texture_ from_pixmap, GLX_ARB_ multisample, GLX_NV_ float_buffer, ARB_get_ proc_address
display: :0 screen: 0
direct rendering: Yes
server glx vendor string: NVIDIA Corporation
server glx version string: 1.4
server glx extensions:
GLX_
GLX_
GLX_
client glx vendor string: NVIDIA Corporation
client glx version string: 1.4
client glx extensions:
GLX_
GLX_
GLX_
GLX_
GLX_
GLX_
GLX version: 1.3
GLX extensions:
GLX_
GLX_
GLX_
GLX_
OpenGL vendor string: NVIDIA Corporation
OpenGL renderer string: GeForce FX 5500/AGP/SSE2
OpenGL version string: 2.1.2 NVIDIA 173.14.27
OpenGL shading language version string: 1.20 NVIDIA via Cg compiler
OpenGL extensions:
.xsession-errors