Bug 326352 - Unable to activate compositing with KWin + xserver >= 1.14.99.2
Summary: Unable to activate compositing with KWin + xserver >= 1.14.99.2
Status: RESOLVED DUPLICATE of bug 327310
Alias: None
Product: kwin
Classification: Plasma
Component: scene-opengl (show other bugs)
Version: 4.11.5
Platform: unspecified Linux
: NOR normal
Target Milestone: ---
Assignee: KWin default assignee
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2013-10-21 00:00 UTC by Hrvoje Senjan
Modified: 2014-02-22 22:28 UTC (History)
2 users (show)

See Also:
Latest Commit:
Version Fixed In:


Attachments
support info (5.30 KB, text/plain)
2014-01-23 00:08 UTC, Hrvoje Senjan
Details

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Description Hrvoje Senjan 2013-10-21 00:00:48 UTC
(is 4.11.60 valid version?)

c/p from {up,downstream} report (fdo#70706):

Since trying out 1.14.99.2, i'm encountering the issue that KWin is not able to activate compositing, probably as a result of refactoring:

kwin(18388): Failed to get visual from fbconfig 
kwin(18388) KWin::OpenGLBackend::setFailed: Creating the OpenGL rendering failed:  "Could not initialize the buffer" 

Regression is somewhere between da5e20127a5b6e11a47eb6e61f3ea87b056cdf5f (works correctly) and f0659a7f68a5a334879af01a6a63742eab1bf5de (fails with above errors)

Let me know what further info i can provide. Glxinfo also spits:
Error: couldn't find RGB GLX visual or fbconfig

Reproducible: Always

Steps to Reproduce:
1. Build mentioned xserver commits/release




GL ES works though ;-)

Opened the bug for reference only, as depending how long it takes to get it fixed there, there might be some reports against KWin also.
Comment 1 Thomas Pfeiffer 2014-01-22 19:51:17 UTC
I'm experiencing the same problem. Here are the - according to Martin - relevant lines from kwin' console output:

QCoreApplication::sendPostedEvents: Cannot send posted events for objects in another thread
kwin(2039) KWin::Compositor::slotCompositingOptionsInitialized: Initializing OpenGL compositing
kwin(2039) KWin::GlxBackend::initDrawableConfigs: Drawable visual (depth  24 ): 0x "228"
kwin(2039) KWin::GlxBackend::initDrawableConfigs: Drawable visual (depth  32 ): 0x "85"
kwin(2039): Failed to get visual from fbconfig
kwin(2039) KWin::OpenGLBackend::setFailed: Creating the OpenGL rendering failed:  "Could not initialize the buffer" 

And here is my glxinfo output:

name of display: :0
display: :0  screen: 0
direct rendering: Yes
server glx vendor string: SGI
server glx version string: 1.4
server glx extensions:
    GLX_ARB_create_context, GLX_ARB_create_context_profile, 
    GLX_ARB_fbconfig_float, GLX_ARB_framebuffer_sRGB, GLX_ARB_multisample, 
    GLX_EXT_create_context_es2_profile, GLX_EXT_framebuffer_sRGB, 
    GLX_EXT_import_context, GLX_EXT_texture_from_pixmap, GLX_EXT_visual_info, 
    GLX_EXT_visual_rating, GLX_INTEL_swap_event, GLX_MESA_copy_sub_buffer, 
    GLX_OML_swap_method, GLX_SGIS_multisample, GLX_SGIX_fbconfig, 
    GLX_SGIX_pbuffer, GLX_SGIX_visual_select_group, GLX_SGI_swap_control
client glx vendor string: Mesa Project and SGI
client glx version string: 1.4
client glx extensions:
    GLX_ARB_create_context, GLX_ARB_create_context_profile, 
    GLX_ARB_create_context_robustness, GLX_ARB_fbconfig_float, 
    GLX_ARB_framebuffer_sRGB, GLX_ARB_get_proc_address, GLX_ARB_multisample, 
    GLX_EXT_create_context_es2_profile, GLX_EXT_fbconfig_packed_float, 
    GLX_EXT_framebuffer_sRGB, GLX_EXT_import_context, 
    GLX_EXT_texture_from_pixmap, GLX_EXT_visual_info, GLX_EXT_visual_rating, 
    GLX_INTEL_swap_event, GLX_MESA_copy_sub_buffer, 
    GLX_MESA_multithread_makecurrent, GLX_MESA_query_renderer, 
    GLX_MESA_swap_control, GLX_OML_swap_method, GLX_OML_sync_control, 
    GLX_SGIS_multisample, GLX_SGIX_fbconfig, GLX_SGIX_pbuffer, 
    GLX_SGIX_visual_select_group, GLX_SGI_make_current_read, 
    GLX_SGI_swap_control, GLX_SGI_video_sync
GLX version: 1.4
GLX extensions:
    GLX_ARB_create_context, GLX_ARB_create_context_profile, 
    GLX_ARB_fbconfig_float, GLX_ARB_framebuffer_sRGB, 
    GLX_ARB_get_proc_address, GLX_ARB_multisample, 
    GLX_EXT_create_context_es2_profile, GLX_EXT_framebuffer_sRGB, 
    GLX_EXT_import_context, GLX_EXT_texture_from_pixmap, GLX_EXT_visual_info, 
    GLX_EXT_visual_rating, GLX_INTEL_swap_event, GLX_MESA_copy_sub_buffer, 
    GLX_MESA_multithread_makecurrent, GLX_MESA_swap_control, 
    GLX_OML_swap_method, GLX_OML_sync_control, GLX_SGIS_multisample, 
    GLX_SGIX_fbconfig, GLX_SGIX_pbuffer, GLX_SGIX_visual_select_group, 
    GLX_SGI_make_current_read, GLX_SGI_swap_control, GLX_SGI_video_sync
OpenGL vendor string: X.Org
OpenGL renderer string: Gallium 0.4 on AMD TURKS
OpenGL core profile version string: 3.1 (Core Profile) Mesa 10.0.2
OpenGL core profile shading language version string: 1.40
OpenGL core profile context flags: (none)
OpenGL core profile extensions:
    GL_AMD_conservative_depth, GL_AMD_draw_buffers_blend, 
    GL_AMD_seamless_cubemap_per_texture, GL_AMD_shader_stencil_export, 
    GL_ARB_ES2_compatibility, GL_ARB_base_instance, 
    GL_ARB_blend_func_extended, GL_ARB_conservative_depth, GL_ARB_copy_buffer, 
    GL_ARB_debug_output, GL_ARB_depth_buffer_float, GL_ARB_depth_clamp, 
    GL_ARB_draw_buffers, GL_ARB_draw_buffers_blend, 
    GL_ARB_draw_elements_base_vertex, GL_ARB_draw_instanced, 
    GL_ARB_explicit_attrib_location, GL_ARB_fragment_coord_conventions, 
    GL_ARB_fragment_shader, GL_ARB_framebuffer_object, 
    GL_ARB_framebuffer_sRGB, GL_ARB_get_program_binary, 
    GL_ARB_half_float_pixel, GL_ARB_half_float_vertex, 
    GL_ARB_instanced_arrays, GL_ARB_internalformat_query, 
    GL_ARB_invalidate_subdata, GL_ARB_map_buffer_alignment, 
    GL_ARB_map_buffer_range, GL_ARB_occlusion_query2, 
    GL_ARB_pixel_buffer_object, GL_ARB_point_sprite, GL_ARB_provoking_vertex, 
    GL_ARB_robustness, GL_ARB_sampler_objects, GL_ARB_seamless_cube_map, 
    GL_ARB_shader_bit_encoding, GL_ARB_shader_objects, 
    GL_ARB_shader_stencil_export, GL_ARB_shader_texture_lod, 
    GL_ARB_shading_language_420pack, GL_ARB_shading_language_packing, 
    GL_ARB_sync, GL_ARB_texture_buffer_object, GL_ARB_texture_buffer_range, 
    GL_ARB_texture_compression_rgtc, GL_ARB_texture_cube_map_array, 
    GL_ARB_texture_float, GL_ARB_texture_mirror_clamp_to_edge, 
    GL_ARB_texture_multisample, GL_ARB_texture_non_power_of_two, 
    GL_ARB_texture_rectangle, GL_ARB_texture_rg, GL_ARB_texture_rgb10_a2ui, 
    GL_ARB_texture_storage, GL_ARB_texture_storage_multisample, 
    GL_ARB_texture_swizzle, GL_ARB_timer_query, GL_ARB_transform_feedback2, 
    GL_ARB_transform_feedback3, GL_ARB_transform_feedback_instanced, 
    GL_ARB_uniform_buffer_object, GL_ARB_vertex_array_bgra, 
    GL_ARB_vertex_array_object, GL_ARB_vertex_attrib_binding, 
    GL_ARB_vertex_shader, GL_ARB_vertex_type_10f_11f_11f_rev, 
    GL_ARB_vertex_type_2_10_10_10_rev, GL_ATI_blend_equation_separate, 
    GL_ATI_texture_compression_3dc, GL_ATI_texture_float, 
    GL_ATI_texture_mirror_once, GL_EXT_abgr, GL_EXT_blend_equation_separate, 
    GL_EXT_draw_buffers2, GL_EXT_draw_instanced, GL_EXT_framebuffer_blit, 
    GL_EXT_framebuffer_multisample, GL_EXT_framebuffer_multisample_blit_scaled, 
    GL_EXT_framebuffer_sRGB, GL_EXT_packed_depth_stencil, GL_EXT_packed_float, 
    GL_EXT_pixel_buffer_object, GL_EXT_provoking_vertex, GL_EXT_texture_array, 
    GL_EXT_texture_compression_latc, GL_EXT_texture_compression_rgtc, 
    GL_EXT_texture_filter_anisotropic, GL_EXT_texture_integer, 
    GL_EXT_texture_mirror_clamp, GL_EXT_texture_sRGB, 
    GL_EXT_texture_sRGB_decode, GL_EXT_texture_shared_exponent, 
    GL_EXT_texture_snorm, GL_EXT_texture_swizzle, GL_EXT_timer_query, 
    GL_EXT_transform_feedback, GL_EXT_vertex_array_bgra, 
    GL_IBM_multimode_draw_arrays, GL_KHR_debug, GL_MESA_pack_invert, 
    GL_MESA_texture_signed_rgba, GL_NV_conditional_render, GL_NV_depth_clamp, 
    GL_NV_packed_depth_stencil, GL_NV_texture_barrier, GL_NV_vdpau_interop, 
    GL_OES_EGL_image, GL_OES_read_format

OpenGL version string: 3.0 Mesa 10.0.2
OpenGL shading language version string: 1.30
OpenGL context flags: (none)
OpenGL extensions:
    GL_AMD_conservative_depth, GL_AMD_draw_buffers_blend, 
    GL_AMD_seamless_cubemap_per_texture, GL_AMD_shader_stencil_export, 
    GL_APPLE_packed_pixels, GL_APPLE_vertex_array_object, 
    GL_ARB_ES2_compatibility, GL_ARB_base_instance, 
    GL_ARB_blend_func_extended, GL_ARB_color_buffer_float, 
    GL_ARB_conservative_depth, GL_ARB_copy_buffer, GL_ARB_debug_output, 
    GL_ARB_depth_buffer_float, GL_ARB_depth_clamp, GL_ARB_depth_texture, 
    GL_ARB_draw_buffers, GL_ARB_draw_buffers_blend, 
    GL_ARB_draw_elements_base_vertex, GL_ARB_draw_instanced, 
    GL_ARB_explicit_attrib_location, GL_ARB_fragment_coord_conventions, 
    GL_ARB_fragment_program, GL_ARB_fragment_program_shadow, 
    GL_ARB_fragment_shader, GL_ARB_framebuffer_object, 
    GL_ARB_framebuffer_sRGB, GL_ARB_get_program_binary, 
    GL_ARB_half_float_pixel, GL_ARB_half_float_vertex, 
    GL_ARB_instanced_arrays, GL_ARB_internalformat_query, 
    GL_ARB_invalidate_subdata, GL_ARB_map_buffer_alignment, 
    GL_ARB_map_buffer_range, GL_ARB_multisample, GL_ARB_multitexture, 
    GL_ARB_occlusion_query, GL_ARB_occlusion_query2, 
    GL_ARB_pixel_buffer_object, GL_ARB_point_parameters, GL_ARB_point_sprite, 
    GL_ARB_provoking_vertex, GL_ARB_robustness, GL_ARB_sampler_objects, 
    GL_ARB_seamless_cube_map, GL_ARB_shader_bit_encoding, 
    GL_ARB_shader_objects, GL_ARB_shader_stencil_export, 
    GL_ARB_shader_texture_lod, GL_ARB_shading_language_100, 
    GL_ARB_shading_language_420pack, GL_ARB_shading_language_packing, 
    GL_ARB_shadow, GL_ARB_sync, GL_ARB_texture_border_clamp, 
    GL_ARB_texture_compression, GL_ARB_texture_compression_rgtc, 
    GL_ARB_texture_cube_map, GL_ARB_texture_cube_map_array, 
    GL_ARB_texture_env_add, GL_ARB_texture_env_combine, 
    GL_ARB_texture_env_crossbar, GL_ARB_texture_env_dot3, 
    GL_ARB_texture_float, GL_ARB_texture_mirror_clamp_to_edge, 
    GL_ARB_texture_mirrored_repeat, GL_ARB_texture_multisample, 
    GL_ARB_texture_non_power_of_two, GL_ARB_texture_rectangle, 
    GL_ARB_texture_rg, GL_ARB_texture_rgb10_a2ui, GL_ARB_texture_storage, 
    GL_ARB_texture_storage_multisample, GL_ARB_texture_swizzle, 
    GL_ARB_timer_query, GL_ARB_transform_feedback2, 
    GL_ARB_transform_feedback3, GL_ARB_transform_feedback_instanced, 
    GL_ARB_transpose_matrix, GL_ARB_uniform_buffer_object, 
    GL_ARB_vertex_array_bgra, GL_ARB_vertex_array_object, 
    GL_ARB_vertex_attrib_binding, GL_ARB_vertex_buffer_object, 
    GL_ARB_vertex_program, GL_ARB_vertex_shader, 
    GL_ARB_vertex_type_10f_11f_11f_rev, GL_ARB_vertex_type_2_10_10_10_rev, 
    GL_ARB_window_pos, GL_ATI_blend_equation_separate, GL_ATI_draw_buffers, 
    GL_ATI_separate_stencil, GL_ATI_texture_compression_3dc, 
    GL_ATI_texture_env_combine3, GL_ATI_texture_float, 
    GL_ATI_texture_mirror_once, GL_EXT_abgr, GL_EXT_bgra, GL_EXT_blend_color, 
    GL_EXT_blend_equation_separate, GL_EXT_blend_func_separate, 
    GL_EXT_blend_minmax, GL_EXT_blend_subtract, GL_EXT_compiled_vertex_array, 
    GL_EXT_copy_texture, GL_EXT_draw_buffers2, GL_EXT_draw_instanced, 
    GL_EXT_draw_range_elements, GL_EXT_fog_coord, GL_EXT_framebuffer_blit, 
    GL_EXT_framebuffer_multisample, GL_EXT_framebuffer_multisample_blit_scaled, 
    GL_EXT_framebuffer_object, GL_EXT_framebuffer_sRGB, 
    GL_EXT_gpu_program_parameters, GL_EXT_multi_draw_arrays, 
    GL_EXT_packed_depth_stencil, GL_EXT_packed_float, GL_EXT_packed_pixels, 
    GL_EXT_pixel_buffer_object, GL_EXT_point_parameters, 
    GL_EXT_polygon_offset, GL_EXT_provoking_vertex, GL_EXT_rescale_normal, 
    GL_EXT_secondary_color, GL_EXT_separate_specular_color, 
    GL_EXT_shadow_funcs, GL_EXT_stencil_two_side, GL_EXT_stencil_wrap, 
    GL_EXT_subtexture, GL_EXT_texture, GL_EXT_texture3D, 
    GL_EXT_texture_array, GL_EXT_texture_compression_latc, 
    GL_EXT_texture_compression_rgtc, GL_EXT_texture_cube_map, 
    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_integer, 
    GL_EXT_texture_lod_bias, GL_EXT_texture_mirror_clamp, 
    GL_EXT_texture_object, GL_EXT_texture_rectangle, GL_EXT_texture_sRGB, 
    GL_EXT_texture_sRGB_decode, GL_EXT_texture_shared_exponent, 
    GL_EXT_texture_snorm, GL_EXT_texture_swizzle, GL_EXT_timer_query, 
    GL_EXT_transform_feedback, GL_EXT_vertex_array, GL_EXT_vertex_array_bgra, 
    GL_IBM_multimode_draw_arrays, GL_IBM_rasterpos_clip, 
    GL_IBM_texture_mirrored_repeat, GL_INGR_blend_func_separate, GL_KHR_debug, 
    GL_MESA_pack_invert, GL_MESA_texture_array, GL_MESA_texture_signed_rgba, 
    GL_MESA_window_pos, GL_NV_blend_square, GL_NV_conditional_render, 
    GL_NV_depth_clamp, GL_NV_fog_distance, GL_NV_light_max_exponent, 
    GL_NV_packed_depth_stencil, GL_NV_primitive_restart, 
    GL_NV_texgen_reflection, GL_NV_texture_barrier, 
    GL_NV_texture_env_combine4, GL_NV_texture_rectangle, GL_NV_vdpau_interop, 
    GL_OES_EGL_image, GL_OES_read_format, GL_SGIS_generate_mipmap, 
    GL_SGIS_texture_border_clamp, GL_SGIS_texture_edge_clamp, 
    GL_SGIS_texture_lod, GL_SUN_multi_draw_arrays

I'm running Linux 3.11.10.3 (or 3.12.8 with the same problem), xorg-server 1.15.0, mesa 10.0.2 and libdrm 2.4.52

Using either "kwin_gles" or "KWIN_OPENGL_INTERFACE=egl kwin --replace" fixes the problem.
Comment 2 Hrvoje Senjan 2014-01-22 19:55:36 UTC
(In reply to comment #1)
> I'm running Linux 3.11.10.3 (or 3.12.8 with the same problem), xorg-server
> 1.15.0, mesa 10.0.2 and libdrm 2.4.52

Yes, downstream report didn't move any further -> https://bugs.freedesktop.org/show_bug.cgi?id=70706
Comment 3 Thomas Lübking 2014-01-22 20:25:18 UTC
Please see bug #329908, likely being bug #327310

Either set the compositor to OGL2.0 (config or environment) or (if that doesn't help) bypass the glXCreateContextAttribsARB branch in glxbackend.cpp (or in kwin/libkwineffects/kwinglutils_funcs.cpp enforce the function pointer to be 0L)
Comment 4 Thomas Pfeiffer 2014-01-22 21:47:20 UTC
Both bugs you linked seem to be specific to Intel HD, but I have a Radeon card. Setting to OpenGL 2.0 via kwinrc did not help. The other two possible solutions would mean I'd have to change the source code and then compile kwin myself, right? I don't think I have the skills to do that...
Comment 5 Thomas Lübking 2014-01-22 21:59:36 UTC
There's also bug #329984 which seems a dupe by chance and despite the little information provided, it's apparently radeon (crash in mesa, user mentions fglrx -> was radeon. qed.) - also the upstream bug has AMD reporters.

You'd have to recompile KWin, but Hrvoje should be able to do so ;-)
If it "fixes" this for him, we'll likely need  a patch to disable glXCreateContextAttribsARB by environment variable (and pot. by default)
Comment 6 Thomas Lübking 2014-01-22 22:10:18 UTC
ps, when this happens and *before* restarting the kwin compositor, call

   nvidia-settings -q UsedDedicatedGPUMemory -q TotalDedicatedGPUMemory

I guess you see why ;-)
Comment 7 Thomas Lübking 2014-01-22 22:10:45 UTC
sorry, wrong bug - ignore last comment.
Comment 8 Hrvoje Senjan 2014-01-22 22:28:30 UTC
Yep, i can compile it - just point me what to do ;-)
Which fbconfig call is the 'guilty' one?
Comment 9 Thomas Lübking 2014-01-22 22:34:18 UTC
It's likely not the fbconfig calls, but "glXCreateContextAttribsARB"
In kwin/libkwineffects/kwinglutils_funcs.cpp:258ff
//    if (hasGLExtension("GLX_ARB_create_context"))
//        glXCreateContextAttribsARB = (glXCreateContextAttribsARB_func) getProcAddress("glXCreateContextAttribsARB");
//    else
        glXCreateContextAttribsARB = NULL;

This will cause "legacy" context creation.
Comment 10 Hrvoje Senjan 2014-01-22 23:48:59 UTC
Same error with that,
kwin(26086): Failed to get visual from fbconfig 
kwin(26086) KWin::OpenGLBackend::setFailed: Creating the OpenGL rendering failed:  "Could not initialize the buffer" 
function is no-op
Comment 11 Thomas Lübking 2014-01-22 23:50:05 UTC
did you reboot before? (i guess you'll at least have to unload the kernel module)
Comment 12 Hrvoje Senjan 2014-01-22 23:51:12 UTC
I'm using radeon/Mesa, so i guess i shouldn't reboot ;-)
Will logout though
Comment 13 Thomas Lübking 2014-01-22 23:53:15 UTC
see bug #329908 comment #9 - the GPU may have entered an invalid state
Comment 14 Hrvoje Senjan 2014-01-23 00:08:22 UTC
Created attachment 84808 [details]
support info

Hm, indeed compositing operates correctly post-reboot with glx.
Other side-effect is that moving windows, etc is noticeably slower.
Comment 15 Thomas Lübking 2014-01-23 00:19:58 UTC
> slower
As compared to GLES? That's probably in the cards (Better with OGL1?)

About the original issue, it might be sufficient to just disable glCoreProfile (ie. choose GL1 or GL2, but never even touch GL3)

@Thomas P.:
kwriteconfig --file kwinrc --group Compositing --key GLCore false
then reboot (really)
Comment 16 Hrvoje Senjan 2014-01-23 00:54:12 UTC
(In reply to comment #15)
> As compared to GLES? That's probably in the cards (Better with OGL1?)
Compared to GLES/egl/Xrender/no compositing. Will try vanilla KWin and no GL3
Comment 17 Thomas Pfeiffer 2014-01-23 18:03:26 UTC
Switching to OGL2 via kwriteconfig brought back compositing!
OGL3 did work with earlier versions of the graphics stack, though, so it does indeed seem to be a bug in xserver or whatever.
Comment 18 Thomas Lübking 2014-01-23 19:49:11 UTC
@Martin
Yes, it's an upstream bug.
However this one apparently has the potential to make kwin entirely breaking OpenGL for endusers.
They've to know that it's required to disable OGL3 - what's hard enough because of the failsafe mechanism in the config dialog - and then reboot to get it back usable.

Therefore I propose to skip OGL3.1 context creation if glx vendor contains "mesa" unless overruled by environment ("KWIN_ALLOW_MESA_GL3=1")?

Objections? (No, I'm not happy with this either)

*** This bug has been marked as a duplicate of bug 327310 ***
Comment 19 Martin Flöser 2014-01-24 07:03:21 UTC
> Therefore I propose to skip OGL3.1 context creation if glx vendor contains
> "mesa" unless overruled by environment ("KWIN_ALLOW_MESA_GL3=1")?
> 
> Objections? (No, I'm not happy with this either)
For KWin/4 we could also extend the opengl_test application. In KWin/5 I 
suggest that we implement support for GLX_MESA_query_renderer.
Comment 20 Thomas Lübking 2014-01-24 15:39:33 UTC
(In reply to comment #19)
> > Therefore I propose to skip OGL3.1 context creation if glx vendor contains
> > "mesa" unless overruled by environment ("KWIN_ALLOW_MESA_GL3=1")?
> > 
> > Objections? (No, I'm not happy with this either)
> For KWin/4 we could also extend the opengl_test application.

Atm, this apparently affects radeon as well as intel (wanna bet on nouveau?)

-> Does GL3 actually work on Sandy or Ivy? (Like it creates such context - not like it doesn't terribly crash ;-)
Comment 21 Martin Flöser 2014-01-24 15:57:05 UTC
> -> Does GL3 actually work on Sandy or Ivy? (Like it creates such context -
> not like it doesn't terribly crash ;-)
just wanted to switch to GL 3, just to notice that I'm using it already (and 
yes it works! ;-). Here the debug output on Debian Testing:

Compositing
===========
Qt Graphics System: raster
Compositing is active
Compositing Type: OpenGL
OpenGL vendor string: Intel Open Source Technology Center
OpenGL renderer string: Mesa DRI Intel(R) Sandybridge Mobile 
OpenGL version string: 3.1 (Core Profile) Mesa 9.2.2
OpenGL shading language version string: 1.40
Driver: Intel
GPU class: SandyBridge
OpenGL version: 3.1
GLSL version: 1.40
Mesa version: 9.2.2
X server version: 1.14.5
Linux kernel version: 3.12
Direct rendering: yes
Requires strict binding: no
GLSL shaders:  yes
Texture NPOT support:  yes
Virtual Machine:  no
OpenGL 2 Shaders are used
Painting blocks for vertical retrace:  no
Comment 22 Hrvoje Senjan 2014-01-24 15:59:43 UTC
(In reply to comment #21)
> X server version: 1.14.5

Was working here too until xserver version from the bug title ;-)
Comment 23 Martin Flöser 2014-01-24 16:02:26 UTC
> > X server version: 1.14.5
> 
> Was working here too until xserver version from the bug title ;-)
/me pets his good old Debian Testing
Comment 24 Thomas Lübking 2014-01-24 16:12:38 UTC
/me thinks that means we actually have no confirmation for Sandy/Ivy/AnyMesaDriver and XOrg 1.14.5, do we?
Comment 25 Thomas Lübking 2014-01-24 16:13:51 UTC
s/1.14.5/1.15/g
Comment 26 Dennis Schridde 2014-01-24 22:12:23 UTC
OpenGL vendor string:                   X.Org
OpenGL renderer string:                 Gallium 0.4 on AMD REDWOOD
OpenGL version string:                  OpenGL ES 3.0 Mesa 10.0.2
OpenGL shading language version string: OpenGL ES GLSL ES 3.0
Driver:                                 R600G
GPU class:                              EVERGREEN
OpenGL version:                         3.0
GLSL version:                           3.0
Mesa version:                           10.0.2
X server version:                       1.15
Linux kernel version:                   3.13
Direct rendering:                       yes
Requires strict binding:                no
GLSL shaders:                           yes
Texture NPOT support:                   yes
Virtual Machine:                        no

GL KWin currently does not work here:
kwin(9123): Failed to get visual from fbconfig 
kwin(9123) KWin::OpenGLBackend::setFailed: Creating the OpenGL rendering failed:  "Could not initialize the buffer"

Anything you want me to test?
Comment 27 Thomas Lübking 2014-01-24 22:25:36 UTC
see lower part of comment #15
current interest is whether this actually works on _any_ chip and xorg 1.15 - notably on sandy/ivybridge (intel), so if you've such chip, it would be great if you could test it.
Comment 28 Dennis Schridde 2014-01-24 22:34:51 UTC
(In reply to comment #27)
> see lower part of comment #15
> current interest is whether this actually works on _any_ chip and xorg 1.15
> - notably on sandy/ivybridge (intel), so if you've such chip, it would be
> great if you could test it.

Sorry, only have this AMD Redwood.
Comment 29 Thomas Pfeiffer 2014-01-28 18:26:44 UTC
I have to partially withdraw my comment that switching to OpenGL 2.0 brought back compositing: It does so only on every second boot. When switch my computer on, I get no compositing. When I reboot, it works again.
Comment 30 Thomas Pfeiffer 2014-02-02 10:42:37 UTC
Now compositing completely stopped working. It is still set to OpenGL 2.0, but it doesn't run. 
When I talked to Martin Gräßlin about the bug on January 22nd, he suggested to run "KWIN_OPENGL_INTERFACE=egl kwin --replace &" and that worked then, but it doesn't work anymore now. kwin_gles still works fine, though.
Comment 31 Thomas Lübking 2014-02-02 10:47:07 UTC
debug output still being "Could not initialize the buffer"?
The setting should be meaningless when KWIN_OPENGL_INTERFACE is exported.
Comment 32 Thomas Pfeiffer 2014-02-02 11:35:49 UTC
Correction: "KWIN_OPENGL_INTERFACE=egl kwin --replace &" does still work. The last time I tried, compositing had been completely deactivated because it had crashed KWin before (or at least KWin assumed it did).
Comment 33 Hrvoje Senjan 2014-02-22 22:28:01 UTC
testing now r115937