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Recently I bought an AMD APU based laptop (A6 3420M + Radeon 7670M), installed the proprietary driver (AMD Catalyst) and everything works fine except for movie playback in the fullscreen -- it seems like I have a vertical line appearing every now and then in every video file, regardless of the movie player (appears equally for mplayer and xbmc).

My first idea was vertical sync, so I disabled it in the Compiz.

My fglrxinfo look as follows:

display: :0  screen: 0
OpenGL vendor string: Advanced Micro Devices, Inc.
OpenGL renderer string: AMD Radeon HD 7600M Series
OpenGL version string: 4.2.11627 Compatibility Profile Context

And glxinfo:

name of display: :0
display: :0  screen: 0
direct rendering: Yes
server glx vendor string: ATI
server glx version string: 1.4
server glx extensions:
GLX_ARB_multisample, GLX_EXT_import_context, GLX_EXT_texture_from_pixmap, 
GLX_EXT_visual_info, GLX_EXT_visual_rating, GLX_OML_swap_method, 
GLX_SGI_make_current_read, GLX_SGI_swap_control, GLX_SGIS_multisample, 
GLX_SGIX_fbconfig, GLX_SGIX_pbuffer, GLX_SGIX_visual_select_group
client glx vendor string: ATI
client glx version string: 1.4
client glx extensions:
GLX_ARB_create_context, GLX_ARB_create_context_profile, 
GLX_ARB_get_proc_address, GLX_ARB_multisample, GLX_EXT_import_context, 
GLX_EXT_swap_control, GLX_EXT_visual_info, GLX_EXT_visual_rating, 
GLX_MESA_allocate_memory, GLX_MESA_copy_sub_buffer, GLX_MESA_swap_control, 
GLX_MESA_swap_frame_usage, GLX_NV_swap_group, GLX_OML_swap_method, 
GLX_SGI_make_current_read, GLX_SGI_swap_control, GLX_SGI_video_sync, 
GLX_SGIS_multisample, GLX_SGIX_fbconfig, GLX_SGIX_pbuffer, 
GLX_SGIX_swap_barrier, GLX_SGIX_swap_group, GLX_SGIX_visual_select_group, 
GLX_EXT_texture_from_pixmap, GLX_EXT_framebuffer_sRGB, 
GLX_ARB_fbconfig_float, GLX_AMD_gpu_association
GLX version: 1.4
GLX extensions:
GLX_ARB_create_context, GLX_ARB_create_context_profile, 
GLX_ARB_get_proc_address, GLX_ARB_multisample, GLX_EXT_import_context, 
GLX_EXT_swap_control, GLX_EXT_visual_info, GLX_EXT_visual_rating, 
GLX_MESA_swap_control, GLX_NV_swap_group, GLX_OML_swap_method, 
GLX_SGI_make_current_read, GLX_SGI_swap_control, GLX_SGI_video_sync, 
GLX_SGIS_multisample, GLX_SGIX_fbconfig, GLX_SGIX_pbuffer, 
GLX_SGIX_swap_barrier, GLX_SGIX_swap_group, GLX_SGIX_visual_select_group, 
GLX_EXT_texture_from_pixmap
OpenGL vendor string: Advanced Micro Devices, Inc.
OpenGL renderer string: AMD Radeon HD 7600M Series
OpenGL version string: 4.2.11627 Compatibility Profile Context
OpenGL shading language version string: 4.20
OpenGL extensions:
GL_AMDX_debug_output, GL_AMDX_vertex_shader_tessellator, 
GL_AMD_conservative_depth, GL_AMD_debug_output, 
GL_AMD_depth_clamp_separate, GL_AMD_draw_buffers_blend, 
GL_AMD_multi_draw_indirect, GL_AMD_name_gen_delete, 
GL_AMD_performance_monitor, GL_AMD_pinned_memory, GL_AMD_sample_positions, 
GL_AMD_seamless_cubemap_per_texture, GL_AMD_shader_stencil_export, 
GL_AMD_shader_trace, GL_AMD_texture_cube_map_array, 
GL_AMD_texture_texture4, GL_AMD_transform_feedback3_lines_triangles, 
GL_AMD_vertex_shader_layer, GL_AMD_vertex_shader_tessellator, 
GL_AMD_vertex_shader_viewport_index, GL_ARB_ES2_compatibility, 
GL_ARB_base_instance, GL_ARB_blend_func_extended, 
GL_ARB_color_buffer_float, GL_ARB_compressed_texture_pixel_storage, 
GL_ARB_conservative_depth, GL_ARB_copy_buffer, 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_indirect, 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_geometry_shader4, 
GL_ARB_get_program_binary, GL_ARB_gpu_shader5, GL_ARB_gpu_shader_fp64, 
GL_ARB_half_float_pixel, GL_ARB_half_float_vertex, GL_ARB_imaging, 
GL_ARB_instanced_arrays, GL_ARB_internalformat_query, 
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_sample_shading, GL_ARB_sampler_objects, 
GL_ARB_seamless_cube_map, GL_ARB_separate_shader_objects, 
GL_ARB_shader_atomic_counters, GL_ARB_shader_bit_encoding, 
GL_ARB_shader_image_load_store, GL_ARB_shader_objects, 
GL_ARB_shader_precision, GL_ARB_shader_stencil_export, 
GL_ARB_shader_subroutine, 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_shadow_ambient, 
GL_ARB_sync, GL_ARB_tessellation_shader, GL_ARB_texture_border_clamp, 
GL_ARB_texture_buffer_object, GL_ARB_texture_buffer_object_rgb32, 
GL_ARB_texture_compression, GL_ARB_texture_compression_bptc, 
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_gather, 
GL_ARB_texture_mirrored_repeat, GL_ARB_texture_multisample, 
GL_ARB_texture_non_power_of_two, GL_ARB_texture_query_lod, 
GL_ARB_texture_rectangle, GL_ARB_texture_rg, GL_ARB_texture_rgb10_a2ui, 
GL_ARB_texture_snorm, GL_ARB_texture_storage, 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_64bit, 
GL_ARB_vertex_buffer_object, GL_ARB_vertex_program, GL_ARB_vertex_shader, 
GL_ARB_vertex_type_2_10_10_10_rev, GL_ARB_viewport_array, 
GL_ARB_window_pos, GL_ATI_draw_buffers, GL_ATI_envmap_bumpmap, 
GL_ATI_fragment_shader, GL_ATI_meminfo, 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_bindable_uniform, 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_buffer, GL_EXT_copy_texture, GL_EXT_direct_state_access, 
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_object, GL_EXT_framebuffer_sRGB, 
GL_EXT_geometry_shader4, GL_EXT_gpu_program_parameters, 
GL_EXT_gpu_shader4, GL_EXT_histogram, 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_provoking_vertex, GL_EXT_rescale_normal, GL_EXT_secondary_color, 
GL_EXT_separate_specular_color, GL_EXT_shader_image_load_store, 
GL_EXT_shadow_funcs, GL_EXT_stencil_wrap, GL_EXT_subtexture, 
GL_EXT_texgen_reflection, GL_EXT_texture3D, GL_EXT_texture_array, 
GL_EXT_texture_buffer_object, GL_EXT_texture_compression_bptc, 
GL_EXT_texture_compression_latc, GL_EXT_texture_compression_rgtc, 
GL_EXT_texture_compression_s3tc, 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, 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_shared_exponent, GL_EXT_texture_snorm, 
GL_EXT_texture_storage, GL_EXT_texture_swizzle, GL_EXT_timer_query, 
GL_EXT_transform_feedback, GL_EXT_vertex_array, GL_EXT_vertex_array_bgra, 
GL_EXT_vertex_attrib_64bit, GL_IBM_texture_mirrored_repeat, 
GL_KTX_buffer_region, GL_NV_blend_square, GL_NV_conditional_render, 
GL_NV_copy_depth_to_color, GL_NV_copy_image, GL_NV_explicit_multisample, 
GL_NV_float_buffer, GL_NV_half_float, GL_NV_primitive_restart, 
GL_NV_texgen_reflection, GL_NV_texture_barrier, GL_SGIS_generate_mipmap, 
GL_SGIS_texture_edge_clamp, GL_SGIS_texture_lod, GL_SUN_multi_draw_arrays, 
GL_WIN_swap_hint, WGL_EXT_swap_control

Any ideas?

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I have figured out the resolution by myself. gstreamer-properties In the Video tab change the plugin to X11/XShm/Xv and the device to AMD Radeon AVIVO Video. Afterwards it works like a charm :) –  Maciek Szlosarczyk Oct 9 '12 at 17:32
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