Following: http://intellinuxgraphics.org/how_to_report_bug.html System environment: -- chipset: (e.g. G965) i915 -- system architecture: ("uname -m") i686 -- xf86-video-intel/xserver/mesa/libdrm version: (If it's built by yourself, provide the git commit id or stable release version. If it's shipped with distribution, provide libdrm version with "pkg-config --modversion libdrm": pkg-config --modversion libdrm Package libdrm was not found in the pkg-config search path. Perhaps you should add the directory containing `libdrm.pc' to the PKG_CONFIG_PATH environment variable No package 'libdrm' found and mesa version with glxinfo: glxinfo name of display: :0.0 display: :0 screen: 0 direct rendering: Yes server glx vendor string: SGI 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_MESA_copy_sub_buffer, 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, GLX_INTEL_swap_event client glx vendor string: Mesa Project and SGI client glx version string: 1.4 client glx extensions: GLX_ARB_get_proc_address, GLX_ARB_multisample, GLX_EXT_import_context, GLX_EXT_visual_info, GLX_EXT_visual_rating, GLX_EXT_framebuffer_sRGB, GLX_MESA_copy_sub_buffer, GLX_MESA_multithread_makecurrent, GLX_MESA_swap_control, GLX_OML_swap_method, GLX_OML_sync_control, GLX_SGI_make_current_read, GLX_SGI_swap_control, GLX_SGI_video_sync, GLX_SGIS_multisample, GLX_SGIX_fbconfig, GLX_SGIX_pbuffer, GLX_SGIX_visual_select_group, GLX_EXT_texture_from_pixmap, GLX_INTEL_swap_event GLX version: 1.4 GLX extensions: GLX_ARB_get_proc_address, GLX_ARB_multisample, GLX_EXT_import_context, GLX_EXT_visual_info, GLX_EXT_visual_rating, GLX_MESA_copy_sub_buffer, GLX_MESA_multithread_makecurrent, GLX_MESA_swap_control, GLX_OML_swap_method, GLX_OML_sync_control, GLX_SGI_make_current_read, GLX_SGI_swap_control, GLX_SGI_video_sync, GLX_SGIS_multisample, GLX_SGIX_fbconfig, GLX_SGIX_pbuffer, GLX_SGIX_visual_select_group, GLX_EXT_texture_from_pixmap, GLX_INTEL_swap_event OpenGL vendor string: Tungsten Graphics, Inc OpenGL renderer string: Mesa DRI Intel(R) Sandybridge Mobile x86/MMX/SSE2 OpenGL version string: 2.1 Mesa 7.11 OpenGL shading language version string: 1.20 OpenGL extensions: GL_ARB_multisample, 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_copy_texture, GL_EXT_polygon_offset, GL_EXT_subtexture, GL_EXT_texture_object, GL_EXT_vertex_array, GL_EXT_compiled_vertex_array, GL_EXT_texture, GL_EXT_texture3D, GL_IBM_rasterpos_clip, GL_ARB_point_parameters, GL_EXT_draw_range_elements, GL_EXT_packed_pixels, GL_EXT_point_parameters, GL_EXT_rescale_normal, GL_EXT_separate_specular_color, GL_EXT_texture_edge_clamp, GL_SGIS_generate_mipmap, GL_SGIS_texture_border_clamp, GL_SGIS_texture_edge_clamp, GL_SGIS_texture_lod, GL_ARB_framebuffer_sRGB, GL_ARB_multitexture, GL_EXT_framebuffer_sRGB, GL_IBM_multimode_draw_arrays, GL_IBM_texture_mirrored_repeat, GL_3DFX_texture_compression_FXT1, GL_ARB_texture_cube_map, GL_ARB_texture_env_add, GL_ARB_transpose_matrix, GL_EXT_blend_func_separate, GL_EXT_fog_coord, GL_EXT_multi_draw_arrays, GL_EXT_secondary_color, GL_EXT_texture_env_add, GL_EXT_texture_filter_anisotropic, GL_EXT_texture_lod_bias, GL_INGR_blend_func_separate, GL_NV_blend_square, GL_NV_light_max_exponent, GL_NV_texgen_reflection, GL_NV_texture_env_combine4, GL_SUN_multi_draw_arrays, GL_ARB_texture_border_clamp, GL_ARB_texture_compression, GL_EXT_framebuffer_object, GL_EXT_texture_env_dot3, GL_MESA_window_pos, GL_NV_packed_depth_stencil, GL_NV_texture_rectangle, GL_NV_vertex_program, GL_ARB_depth_texture, GL_ARB_occlusion_query, GL_ARB_shadow, GL_ARB_texture_env_combine, GL_ARB_texture_env_crossbar, GL_ARB_texture_env_dot3, GL_ARB_texture_mirrored_repeat, GL_ARB_window_pos, GL_ATI_envmap_bumpmap, GL_EXT_stencil_two_side, GL_EXT_texture_cube_map, GL_NV_depth_clamp, GL_NV_vertex_program1_1, GL_APPLE_client_storage, GL_APPLE_packed_pixels, GL_APPLE_vertex_array_object, GL_ARB_draw_buffers, GL_ARB_fragment_program, GL_ARB_fragment_shader, GL_ARB_shader_objects, GL_ARB_vertex_program, GL_ARB_vertex_shader, GL_ATI_draw_buffers, GL_ATI_texture_env_combine3, GL_EXT_shadow_funcs, GL_EXT_stencil_wrap, GL_MESA_pack_invert, GL_MESA_ycbcr_texture, GL_ARB_depth_clamp, GL_ARB_fragment_program_shadow, GL_ARB_half_float_pixel, GL_ARB_point_sprite, GL_ARB_shading_language_100, GL_ARB_sync, GL_ARB_texture_non_power_of_two, GL_ARB_vertex_buffer_object, GL_ATI_blend_equation_separate, GL_EXT_blend_equation_separate, GL_OES_read_format, GL_ARB_color_buffer_float, GL_ARB_pixel_buffer_object, GL_ARB_texture_compression_rgtc, GL_ARB_texture_rectangle, GL_EXT_pixel_buffer_object, GL_EXT_texture_compression_rgtc, GL_EXT_texture_rectangle, GL_EXT_texture_sRGB, GL_ARB_framebuffer_object, GL_EXT_framebuffer_blit, GL_EXT_framebuffer_multisample, GL_EXT_packed_depth_stencil, GL_APPLE_object_purgeable, GL_ARB_vertex_array_object, GL_ATI_separate_stencil, GL_EXT_draw_buffers2, GL_EXT_gpu_program_parameters, GL_EXT_texture_env_combine, GL_EXT_texture_sRGB_decode, GL_EXT_timer_query, GL_OES_EGL_image, GL_ARB_copy_buffer, GL_ARB_half_float_vertex, GL_ARB_map_buffer_range, GL_ARB_texture_rg, GL_ARB_texture_swizzle, GL_ARB_vertex_array_bgra, GL_EXT_separate_shader_objects, GL_EXT_texture_swizzle, GL_EXT_vertex_array_bgra, GL_NV_conditional_render, GL_ARB_ES2_compatibility, GL_ARB_draw_elements_base_vertex, GL_ARB_explicit_attrib_location, GL_ARB_fragment_coord_conventions, GL_ARB_provoking_vertex, GL_ARB_sampler_objects, GL_ARB_seamless_cube_map, GL_ARB_shader_texture_lod, GL_EXT_provoking_vertex, GL_EXT_texture_snorm, GL_MESA_texture_signed_rgba, GL_ARB_robustness 32 GLX Visuals visual x bf lv rg d st colorbuffer sr ax dp st accumbuffer ms cav id dep cl sp sz l ci b ro r g b a F gb bf th cl r g b a ns b eat ---------------------------------------------------------------------------- 0x021 24 tc 0 32 0 r y . 8 8 8 8 . . 0 24 8 0 0 0 0 0 0 None 0x022 24 dc 0 32 0 r y . 8 8 8 8 . . 0 24 8 0 0 0 0 0 0 None 0x090 24 tc 0 24 0 r . . 8 8 8 0 . . 0 0 0 0 0 0 0 0 0 None 0x091 24 tc 0 24 0 r y . 8 8 8 0 . . 0 0 0 0 0 0 0 0 0 None 0x092 24 tc 0 24 0 r y . 8 8 8 0 . . 0 0 0 0 0 0 0 0 0 None 0x093 24 tc 0 24 0 r . . 8 8 8 0 . . 0 24 8 0 0 0 0 0 0 None 0x094 24 tc 0 24 0 r y . 8 8 8 0 . . 0 24 8 0 0 0 0 0 0 None 0x095 24 tc 0 24 0 r y . 8 8 8 0 . . 0 24 8 0 0 0 0 0 0 None 0x096 24 tc 0 32 0 r . . 8 8 8 8 . . 0 0 0 0 0 0 0 0 0 None 0x097 24 tc 0 32 0 r y . 8 8 8 8 . . 0 0 0 0 0 0 0 0 0 None 0x098 24 tc 0 32 0 r y . 8 8 8 8 . . 0 0 0 0 0 0 0 0 0 None 0x099 24 tc 0 32 0 r . . 8 8 8 8 . . 0 24 8 0 0 0 0 0 0 None 0x09a 24 tc 0 24 0 r y . 8 8 8 0 . . 0 24 8 0 0 0 0 0 0 None 0x09b 24 tc 0 24 0 r y . 8 8 8 0 . . 0 24 8 16 16 16 0 0 0 Slow 0x09c 24 tc 0 32 0 r y . 8 8 8 8 . . 0 24 8 0 0 0 0 0 0 None 0x09d 24 tc 0 32 0 r y . 8 8 8 8 . . 0 24 8 16 16 16 16 0 0 Slow 0x09e 24 dc 0 24 0 r . . 8 8 8 0 . . 0 0 0 0 0 0 0 0 0 None 0x09f 24 dc 0 24 0 r y . 8 8 8 0 . . 0 0 0 0 0 0 0 0 0 None 0x0a0 24 dc 0 24 0 r y . 8 8 8 0 . . 0 0 0 0 0 0 0 0 0 None 0x0a1 24 dc 0 24 0 r . . 8 8 8 0 . . 0 24 8 0 0 0 0 0 0 None 0x0a2 24 dc 0 24 0 r y . 8 8 8 0 . . 0 24 8 0 0 0 0 0 0 None 0x0a3 24 dc 0 24 0 r y . 8 8 8 0 . . 0 24 8 0 0 0 0 0 0 None 0x0a4 24 dc 0 32 0 r . . 8 8 8 8 . . 0 0 0 0 0 0 0 0 0 None 0x0a5 24 dc 0 32 0 r y . 8 8 8 8 . . 0 0 0 0 0 0 0 0 0 None 0x0a6 24 dc 0 32 0 r y . 8 8 8 8 . . 0 0 0 0 0 0 0 0 0 None 0x0a7 24 dc 0 32 0 r . . 8 8 8 8 . . 0 24 8 0 0 0 0 0 0 None 0x0a8 24 dc 0 32 0 r y . 8 8 8 8 . . 0 24 8 0 0 0 0 0 0 None 0x0a9 24 dc 0 24 0 r y . 8 8 8 0 . . 0 24 8 0 0 0 0 0 0 None 0x0aa 24 dc 0 24 0 r y . 8 8 8 0 . . 0 24 8 16 16 16 0 0 0 Slow 0x0ab 24 dc 0 32 0 r y . 8 8 8 8 . . 0 24 8 0 0 0 0 0 0 None 0x0ac 24 dc 0 32 0 r y . 8 8 8 8 . . 0 24 8 16 16 16 16 0 0 Slow 0x05f 32 tc 0 32 0 r y . 8 8 8 8 . . 0 24 8 0 0 0 0 0 0 None 48 GLXFBConfigs: visual x bf lv rg d st colorbuffer sr ax dp st accumbuffer ms cav id dep cl sp sz l ci b ro r g b a F gb bf th cl r g b a ns b eat ---------------------------------------------------------------------------- 0x060 0 tc 0 16 0 r . . 5 6 5 0 . . 0 0 0 0 0 0 0 0 0 None 0x061 0 tc 0 16 0 r y . 5 6 5 0 . . 0 0 0 0 0 0 0 0 0 None 0x062 0 tc 0 16 0 r y . 5 6 5 0 . . 0 0 0 0 0 0 0 0 0 None 0x063 0 tc 0 16 0 r . . 5 6 5 0 . . 0 16 0 0 0 0 0 0 0 None 0x064 0 tc 0 16 0 r y . 5 6 5 0 . . 0 16 0 0 0 0 0 0 0 None 0x065 0 tc 0 16 0 r y . 5 6 5 0 . . 0 16 0 0 0 0 0 0 0 None 0x066 24 tc 0 24 0 r . . 8 8 8 0 . . 0 0 0 0 0 0 0 0 0 None 0x067 24 tc 0 24 0 r y . 8 8 8 0 . . 0 0 0 0 0 0 0 0 0 None 0x068 24 tc 0 24 0 r y . 8 8 8 0 . . 0 0 0 0 0 0 0 0 0 None 0x069 24 tc 0 24 0 r . . 8 8 8 0 . . 0 24 8 0 0 0 0 0 0 None 0x06a 24 tc 0 24 0 r y . 8 8 8 0 . . 0 24 8 0 0 0 0 0 0 None 0x06b 24 tc 0 24 0 r y . 8 8 8 0 . . 0 24 8 0 0 0 0 0 0 None 0x06c 24 tc 0 32 0 r . . 8 8 8 8 . . 0 0 0 0 0 0 0 0 0 None 0x06d 24 tc 0 32 0 r y . 8 8 8 8 . . 0 0 0 0 0 0 0 0 0 None 0x06e 24 tc 0 32 0 r y . 8 8 8 8 . . 0 0 0 0 0 0 0 0 0 None 0x06f 24 tc 0 32 0 r . . 8 8 8 8 . . 0 24 8 0 0 0 0 0 0 None 0x070 24 tc 0 32 0 r y . 8 8 8 8 . . 0 24 8 0 0 0 0 0 0 None 0x071 32 tc 0 32 0 r y . 8 8 8 8 . . 0 24 8 0 0 0 0 0 0 None 0x072 0 tc 0 16 0 r y . 5 6 5 0 . . 0 16 0 0 0 0 0 0 0 None 0x073 0 tc 0 16 0 r y . 5 6 5 0 . . 0 16 0 16 16 16 0 0 0 Slow 0x074 24 tc 0 24 0 r y . 8 8 8 0 . . 0 24 8 0 0 0 0 0 0 None 0x075 24 tc 0 24 0 r y . 8 8 8 0 . . 0 24 8 16 16 16 0 0 0 Slow 0x076 24 tc 0 32 0 r y . 8 8 8 8 . . 0 24 8 0 0 0 0 0 0 None 0x077 24 tc 0 32 0 r y . 8 8 8 8 . . 0 24 8 16 16 16 16 0 0 Slow 0x078 0 dc 0 16 0 r . . 5 6 5 0 . . 0 0 0 0 0 0 0 0 0 None 0x079 0 dc 0 16 0 r y . 5 6 5 0 . . 0 0 0 0 0 0 0 0 0 None 0x07a 0 dc 0 16 0 r y . 5 6 5 0 . . 0 0 0 0 0 0 0 0 0 None 0x07b 0 dc 0 16 0 r . . 5 6 5 0 . . 0 16 0 0 0 0 0 0 0 None 0x07c 0 dc 0 16 0 r y . 5 6 5 0 . . 0 16 0 0 0 0 0 0 0 None 0x07d 0 dc 0 16 0 r y . 5 6 5 0 . . 0 16 0 0 0 0 0 0 0 None 0x07e 24 dc 0 24 0 r . . 8 8 8 0 . . 0 0 0 0 0 0 0 0 0 None 0x07f 24 dc 0 24 0 r y . 8 8 8 0 . . 0 0 0 0 0 0 0 0 0 None 0x080 24 dc 0 24 0 r y . 8 8 8 0 . . 0 0 0 0 0 0 0 0 0 None 0x081 24 dc 0 24 0 r . . 8 8 8 0 . . 0 24 8 0 0 0 0 0 0 None 0x082 24 dc 0 24 0 r y . 8 8 8 0 . . 0 24 8 0 0 0 0 0 0 None 0x083 24 dc 0 24 0 r y . 8 8 8 0 . . 0 24 8 0 0 0 0 0 0 None 0x084 24 dc 0 32 0 r . . 8 8 8 8 . . 0 0 0 0 0 0 0 0 0 None 0x085 24 dc 0 32 0 r y . 8 8 8 8 . . 0 0 0 0 0 0 0 0 0 None 0x086 24 dc 0 32 0 r y . 8 8 8 8 . . 0 0 0 0 0 0 0 0 0 None 0x087 24 dc 0 32 0 r . . 8 8 8 8 . . 0 24 8 0 0 0 0 0 0 None 0x088 24 dc 0 32 0 r y . 8 8 8 8 . . 0 24 8 0 0 0 0 0 0 None 0x089 24 dc 0 32 0 r y . 8 8 8 8 . . 0 24 8 0 0 0 0 0 0 None 0x08a 0 dc 0 16 0 r y . 5 6 5 0 . . 0 16 0 0 0 0 0 0 0 None 0x08b 0 dc 0 16 0 r y . 5 6 5 0 . . 0 16 0 16 16 16 0 0 0 Slow 0x08c 24 dc 0 24 0 r y . 8 8 8 0 . . 0 24 8 0 0 0 0 0 0 None 0x08d 24 dc 0 24 0 r y . 8 8 8 0 . . 0 24 8 16 16 16 0 0 0 Slow 0x08e 24 dc 0 32 0 r y . 8 8 8 8 . . 0 24 8 0 0 0 0 0 0 None 0x08f 24 dc 0 32 0 r y . 8 8 8 8 . . 0 24 8 16 16 16 16 0 0 Slow while xf86-video-intel and xserver version are available in Xorg.0.log.) apt-cache policy xserver-xorg-video-intel xserver-xorg-video-intel: Installed: 2:2.17.0-1ubuntu3 Candidate: 2:2.17.0-1ubuntu4 Version table: 2:2.17.0-1ubuntu4 0 500 http://archive.ubuntu.com/ubuntu/ precise/main i386 Packages *** 2:2.17.0-1ubuntu3 0 100 /var/lib/dpkg/status apt-cache policy xorg xorg: Installed: 1:7.6+10ubuntu1 Candidate: 1:7.6+10ubuntu1 Version table: *** 1:7.6+10ubuntu1 0 500 http://archive.ubuntu.com/ubuntu/ precise/main i386 Packages 100 /var/lib/dpkg/status -- kernel version: ("uname -r") 3.2.0-12-generic-pae -- Linux distribution: lsb_release -rd Description: Ubuntu precise (development branch) Release: 12.04 -- Machine or mobo model: Acer Aspire 5750-9668 -- Display connector: (e.g. VGA, DVI, HDMI, S-video, ...) I am using the main laptop screen with no secondary monitor. 3) Reproduce steps. Probability if not 100% reproducible. What is expected to happen in a blank Calc document is when one resizes the window, it does not have screen display corruptions. What happens is it does as per screenshot https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/871972/+attachment/2535351/+files/screenshot.png . Following https://wiki.ubuntu.com/Backtrace please see https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/871972/+attachment/2535349/+files/gdb-libreoffice.txt for backtrace information. 4) Attachment: -- Xorg.0.log https://bugs.launchpad.net/xserver-xorg-video-intel/+bug/871972/+attachment/2776966/+files/Xorg.0.log -- dmesg output (better with boot option "drm.debug=0x06") https://bugs.launchpad.net/xserver-xorg-video-intel/+bug/871972/+attachment/2776965/+files/dmesg -- xorg.conf (if you changed any default options) sudo find / 'xorg.conf' | grep xorg.conf /usr/share/X11/xorg.conf.d /usr/share/X11/xorg.conf.d/10-evdev.conf /usr/share/X11/xorg.conf.d/11-evdev-quirks.conf /usr/share/X11/xorg.conf.d/11-evdev-trackpoint.conf /usr/share/X11/xorg.conf.d/50-synaptics.conf /usr/share/X11/xorg.conf.d/50-vmmouse.conf /usr/share/X11/xorg.conf.d/50-wacom.conf /usr/share/X11/xorg.conf.d/51-synaptics-quirks.conf /usr/share/man/man5/xorg.conf.5.gz /usr/share/man/man5/xorg.conf.d.5.gz /rofs/usr/share/X11/xorg.conf.d /rofs/usr/share/X11/xorg.conf.d/10-evdev.conf /rofs/usr/share/X11/xorg.conf.d/11-evdev-quirks.conf /rofs/usr/share/X11/xorg.conf.d/11-evdev-trackpoint.conf /rofs/usr/share/X11/xorg.conf.d/50-synaptics.conf /rofs/usr/share/X11/xorg.conf.d/50-vmmouse.conf /rofs/usr/share/X11/xorg.conf.d/50-wacom.conf /rofs/usr/share/X11/xorg.conf.d/51-synaptics-quirks.conf /rofs/usr/share/man/man5/xorg.conf.5.gz /rofs/usr/share/man/man5/xorg.conf.d.5.gz Would you like to be more specific?! :D -- screenshot or photo (optional, a picture is worth a thousand words) https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/871972/+attachment/2535351/+files/screenshot.png -- output of "xrandr --verbose" for display mode issue Screen 0: minimum 320 x 200, current 1366 x 768, maximum 8192 x 8192 LVDS1 connected 1366x768+0+0 (0x45) normal (normal left inverted right x axis y axis) 344mm x 193mm Identifier: 0x41 Timestamp: 166198 Subpixel: horizontal rgb Gamma: 1.0:1.0:1.0 Brightness: 1.0 Clones: CRTC: 0 CRTCs: 0 1 Transform: 1.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 1.000000 filter: EDID: 00ffffffffffff0006afec2200000000 01130103802213780ac8959e57549226 0f505400000001010101010101010101 010101010101121b5642500026302018 340058c1100000180000000f00000000 00000000000000000020000000fe0041 554f0a202020202020202020000000fe 004231353658573032205632200a00c0 BACKLIGHT: 9 (0x00000009) range: (0,9) Backlight: 9 (0x00000009) range: (0,9) scaling mode: Full aspect supported: None Full Center Full aspect 1366x768 (0x45) 69.3MHz -HSync -VSync *current +preferred h: width 1366 start 1398 end 1422 total 1432 skew 0 clock 48.4KHz v: height 768 start 771 end 775 total 806 clock 60.0Hz 1360x768 (0x46) 84.8MHz -HSync +VSync h: width 1360 start 1432 end 1568 total 1776 skew 0 clock 47.7KHz v: height 768 start 771 end 781 total 798 clock 59.8Hz 1360x768 (0x47) 72.0MHz +HSync -VSync h: width 1360 start 1408 end 1440 total 1520 skew 0 clock 47.4KHz v: height 768 start 771 end 781 total 790 clock 60.0Hz 1024x768 (0x48) 65.0MHz -HSync -VSync h: width 1024 start 1048 end 1184 total 1344 skew 0 clock 48.4KHz v: height 768 start 771 end 777 total 806 clock 60.0Hz 800x600 (0x49) 40.0MHz +HSync +VSync h: width 800 start 840 end 968 total 1056 skew 0 clock 37.9KHz v: height 600 start 601 end 605 total 628 clock 60.3Hz 800x600 (0x4a) 36.0MHz +HSync +VSync h: width 800 start 824 end 896 total 1024 skew 0 clock 35.2KHz v: height 600 start 601 end 603 total 625 clock 56.2Hz 640x480 (0x4b) 25.2MHz -HSync -VSync h: width 640 start 656 end 752 total 800 skew 0 clock 31.5KHz v: height 480 start 490 end 492 total 525 clock 59.9Hz VGA1 disconnected (normal left inverted right x axis y axis) Identifier: 0x42 Timestamp: 166198 Subpixel: unknown Clones: CRTCs: 0 1 Transform: 1.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 1.000000 filter: HDMI1 disconnected (normal left inverted right x axis y axis) Identifier: 0x43 Timestamp: 166198 Subpixel: unknown Clones: CRTCs: 0 1 Transform: 1.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 1.000000 filter: Broadcast RGB: Full supported: Full Limited 16:2 audio: auto supported: off auto on DP1 disconnected (normal left inverted right x axis y axis) Identifier: 0x44 Timestamp: 166198 Subpixel: unknown Clones: CRTCs: 0 1 Transform: 1.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 1.000000 filter: Broadcast RGB: Full supported: Full Limited 16:2 audio: auto supported: off auto on -- intel_reg_dumper output (see the guide) sudo intel_reg_dumper PGETBL_CTL: 0x00000000 GEN6_INSTDONE_1: 0xfffffffe GEN6_INSTDONE_2: 0xffffffff CPU_VGACNTRL: 0x80000000 (disabled) DIGITAL_PORT_HOTPLUG_CNTRL: 0x00000000 RR_HW_CTL: 0x00000000 (low 0, high 0) FDI_PLL_BIOS_0: 0xffffffff FDI_PLL_BIOS_1: 0xffffffff FDI_PLL_BIOS_2: 0xffffffff DISPLAY_PORT_PLL_BIOS_0: 0xffffffff DISPLAY_PORT_PLL_BIOS_1: 0xffffffff DISPLAY_PORT_PLL_BIOS_2: 0xffffffff FDI_PLL_FREQ_CTL: 0xffffffff PIPEACONF: 0xc0000050 (enabled, active, 6bpc) HTOTAL_A: 0x05970555 (1366 active, 1432 total) HBLANK_A: 0x05970555 (1366 start, 1432 end) HSYNC_A: 0x058d0575 (1398 start, 1422 end) VTOTAL_A: 0x032502ff (768 active, 806 total) VBLANK_A: 0x032502ff (768 start, 806 end) VSYNC_A: 0x03060302 (771 start, 775 end) VSYNCSHIFT_A: 0x00000000 PIPEASRC: 0x055502ff (1366, 768) PIPEA_DATA_M1: 0x7e1308a8 (TU 64, val 0x1308a8 1247400) PIPEA_DATA_N1: 0x0020f580 (val 0x20f580 2160000) PIPEA_DATA_M2: 0x00000000 (TU 1, val 0x0 0) PIPEA_DATA_N2: 0x00000000 (val 0x0 0) PIPEA_LINK_M1: 0x00010eb4 (val 0x10eb4 69300) PIPEA_LINK_N1: 0x00041eb0 (val 0x41eb0 270000) PIPEA_LINK_M2: 0x00000000 (val 0x0 0) PIPEA_LINK_N2: 0x00000000 (val 0x0 0) DSPACNTR: 0xd8004400 (enabled) DSPABASE: 0x00000000 DSPASTRIDE: 0x00001600 (88) DSPASURF: 0x00470000 DSPATILEOFF: 0x00000000 (0, 0) PIPEBCONF: 0x00000000 (disabled, inactive, 8bpc) HTOTAL_B: 0x00000000 (1 active, 1 total) HBLANK_B: 0x00000000 (1 start, 1 end) HSYNC_B: 0x00000000 (1 start, 1 end) VTOTAL_B: 0x00000000 (1 active, 1 total) VBLANK_B: 0x00000000 (1 start, 1 end) VSYNC_B: 0x00000000 (1 start, 1 end) VSYNCSHIFT_B: 0x00000000 DSPBCNTR: 0x00004000 (disabled) DSPBBASE: 0x00000000 DSPBSTRIDE: 0x00000000 (0) DSPBSURF: 0x00000000 DSPBTILEOFF: 0x00000000 (0, 0) PIPEBSRC: 0x00000000 (1, 1) PIPEB_DATA_M1: 0x00000000 (TU 1, val 0x0 0) PIPEB_DATA_N1: 0x00000000 (val 0x0 0) PIPEB_DATA_M2: 0x00000000 (TU 1, val 0x0 0) PIPEB_DATA_N2: 0x00000000 (val 0x0 0) PIPEB_LINK_M1: 0x00000000 (val 0x0 0) PIPEB_LINK_N1: 0x00000000 (val 0x0 0) PIPEB_LINK_M2: 0x00000000 (val 0x0 0) PIPEB_LINK_N2: 0x00000000 (val 0x0 0) PFA_CTL_1: 0x00000000 (disable, auto_scale yes, auto_scale_cal no, v_filter enable, vadapt disable, mode least, filter_sel programmed,chroma pre-filter disable, vert3tap auto, v_inter_invert field 1) PFA_CTL_2: 0x00007e80 (vscale 0.988281) PFA_CTL_3: 0x00003f40 (vscale initial phase 0.494141) PFA_CTL_4: 0x00007d54 (hscale 0.979126) PFA_WIN_POS: 0x00000000 (0, 0) PFA_WIN_SIZE: 0x00000000 (0, 0) PFB_CTL_1: 0x00000000 (disable, auto_scale yes, auto_scale_cal no, v_filter enable, vadapt disable, mode least, filter_sel programmed,chroma pre-filter disable, vert3tap auto, v_inter_invert field 1) PFB_CTL_2: 0x00000000 (vscale 0.000000) PFB_CTL_3: 0x00000000 (vscale initial phase 0.000000) PFB_CTL_4: 0x00000000 (hscale 0.000000) PFB_WIN_POS: 0x00000000 (0, 0) PFB_WIN_SIZE: 0x00000000 (0, 0) PCH_DREF_CONTROL: 0x00001402 (cpu source disable, ssc_source enable, nonspread_source enable, superspread_source disable, ssc4_mode downspread, ssc1 enable, ssc4 disable) PCH_RAWCLK_FREQ: 0x0000007d (FDL_TP1 timer 0.5us, FDL_TP2 timer 1.5us, freq 125) PCH_DPLL_TMR_CFG: 0x0271186a PCH_SSC4_PARMS: 0x01204860 PCH_SSC4_AUX_PARMS: 0x000029c5 PCH_DPLL_SEL: 0x00000008 (TransA DPLL enable (DPLL A), TransB DPLL disable (DPLL (null))) PCH_DPLL_ANALOG_CTL: 0x00008000 PCH_DPLL_A: 0x88046004 (enable, sdvo high speed no, mode LVDS, p2 Div 14, FPA0 P1 3, FPA1 P1 3, refclk SSC, sdvo/hdmi mul 1) PCH_DPLL_B: 0x04800080 (disable, sdvo high speed no, mode (null), p2 (null), FPA0 P1 8, FPA1 P1 8, refclk default 120Mhz, sdvo/hdmi mul 1) PCH_FPA0: 0x00021005 (n = 2, m1 = 16, m2 = 5) PCH_FPA1: 0x00021005 (n = 2, m1 = 16, m2 = 5) PCH_FPB0: 0x00030d07 (n = 3, m1 = 13, m2 = 7) PCH_FPB1: 0x00030d07 (n = 3, m1 = 13, m2 = 7) TRANS_HTOTAL_A: 0x05970555 (1366 active, 1432 total) TRANS_HBLANK_A: 0x05970555 (1366 start, 1432 end) TRANS_HSYNC_A: 0x058d0575 (1398 start, 1422 end) TRANS_VTOTAL_A: 0x032502ff (768 active, 806 total) TRANS_VBLANK_A: 0x032502ff (768 start, 806 end) TRANS_VSYNC_A: 0x03060302 (771 start, 775 end) TRANSA_DATA_M1: 0x00000000 (TU 1, val 0x0 0) TRANSA_DATA_N1: 0x00000000 (val 0x0 0) TRANSA_DATA_M2: 0x00000000 (TU 1, val 0x0 0) TRANSA_DATA_N2: 0x00000000 (val 0x0 0) TRANSA_DP_LINK_M1: 0x00000000 (val 0x0 0) TRANSA_DP_LINK_N1: 0x00000000 (val 0x0 0) TRANSA_DP_LINK_M2: 0x00000000 (val 0x0 0) TRANSA_DP_LINK_N2: 0x00000000 (val 0x0 0) TRANS_HTOTAL_B: 0x00000000 (1 active, 1 total) TRANS_HBLANK_B: 0x00000000 (1 start, 1 end) TRANS_HSYNC_B: 0x00000000 (1 start, 1 end) TRANS_VTOTAL_B: 0x00000000 (1 active, 1 total) TRANS_VBLANK_B: 0x00000000 (1 start, 1 end) TRANS_VSYNC_B: 0x00000000 (1 start, 1 end) TRANSB_DATA_M1: 0x00000000 (TU 1, val 0x0 0) TRANSB_DATA_N1: 0x00000000 (val 0x0 0) TRANSB_DATA_M2: 0x00000000 (TU 1, val 0x0 0) TRANSB_DATA_N2: 0x00000000 (val 0x0 0) TRANSB_DP_LINK_M1: 0x00000000 (val 0x0 0) TRANSB_DP_LINK_N1: 0x00000000 (val 0x0 0) TRANSB_DP_LINK_M2: 0x00000000 (val 0x0 0) TRANSB_DP_LINK_N2: 0x00000000 (val 0x0 0) TRANS_HTOTAL_C: 0x00000000 (1 active, 1 total) TRANS_HBLANK_C: 0x00000000 (1 start, 1 end) TRANS_HSYNC_C: 0x00000000 (1 start, 1 end) TRANS_VTOTAL_C: 0x00000000 (1 active, 1 total) TRANS_VBLANK_C: 0x00000000 (1 start, 1 end) TRANS_VSYNC_C: 0x00000000 (1 start, 1 end) TRANSC_DATA_M1: 0x00000000 (TU 1, val 0x0 0) TRANSC_DATA_N1: 0x00000000 (val 0x0 0) TRANSC_DATA_M2: 0x00000000 (TU 1, val 0x0 0) TRANSC_DATA_N2: 0x00000000 (val 0x0 0) TRANSC_DP_LINK_M1: 0x00000000 (val 0x0 0) TRANSC_DP_LINK_N1: 0x00000000 (val 0x0 0) TRANSC_DP_LINK_M2: 0x00000000 (val 0x0 0) TRANSC_DP_LINK_N2: 0x00000000 (val 0x0 0) TRANSACONF: 0xc0000000 (enable, active) TRANSBCONF: 0x00000000 (disable, inactive) TRANSCCONF: 0x00000000 (disable, inactive) FDI_TXA_CTL: 0xb0044000 (enable, train pattern not train, voltage swing 0.4V,pre-emphasis 0dB, port width X1, enhanced framing enable, FDI PLL enable, scrambing enable, master mode disable) FDI_TXB_CTL: 0x00040000 (disable, train pattern pattern_1, voltage swing 0.4V,pre-emphasis 0dB, port width X1, enhanced framing enable, FDI PLL disable, scrambing enable, master mode disable) FDI_TXC_CTL: 0x00000000 (disable, train pattern pattern_1, voltage swing 0.4V,pre-emphasis 0dB, port width X1, enhanced framing disable, FDI PLL disable, scrambing enable, master mode disable) FDI_RXA_CTL: 0x80022350 (enable, train pattern not train, port width X1, 6bpc,link_reverse_strap_overwrite no, dmi_link_reverse no, FDI PLL enable,FS ecc disable, FE ecc disable, FS err report enable, FE err report enable,scrambing enable, enhanced framing enable, PCDClk) FDI_RXB_CTL: 0x00000040 (disable, train pattern pattern_1, port width X1, 8bpc,link_reverse_strap_overwrite no, dmi_link_reverse no, FDI PLL disable,FS ecc disable, FE ecc disable, FS err report disable, FE err report disable,scrambing enable, enhanced framing enable, RawClk) FDI_RXC_CTL: 0x00000040 (disable, train pattern pattern_1, port width X1, 8bpc,link_reverse_strap_overwrite no, dmi_link_reverse no, FDI PLL disable,FS ecc disable, FE ecc disable, FS err report disable, FE err report disable,scrambing enable, enhanced framing enable, RawClk) FDI_RXA_MISC: 0x00000080 (FDI Delay 128) FDI_RXB_MISC: 0x00000080 (FDI Delay 128) FDI_RXC_MISC: 0x00000080 (FDI Delay 128) FDI_RXA_TUSIZE1: 0x7e000000 FDI_RXA_TUSIZE2: 0x7e000000 FDI_RXB_TUSIZE1: 0x7e000000 FDI_RXB_TUSIZE2: 0x7e000000 FDI_RXC_TUSIZE1: 0x7e000000 FDI_RXC_TUSIZE2: 0x7e000000 FDI_PLL_CTL_1: 0x7e000000 FDI_PLL_CTL_2: 0x7e000000 FDI_RXA_IIR: 0x00000000 FDI_RXA_IMR: 0x000008ff FDI_RXB_IIR: 0x00000000 FDI_RXB_IMR: 0x000008ff PCH_ADPA: 0x00f40000 (disabled, transcoder A, -hsync, -vsync) HDMIB: 0x0000001c (disabled pipe A 8bpc SDVO DVI audio disabled +vsync +hsync detected) HDMIC: 0x00000018 (disabled pipe A 8bpc SDVO DVI audio disabled +vsync +hsync non-detected) HDMID: 0x00000018 (disabled pipe A 8bpc SDVO DVI audio disabled +vsync +hsync non-detected) PCH_LVDS: 0x80300302 (enabled, pipe A, 18 bit, 1 channel) CPU_eDP_A: 0x00000018 PCH_DP_B: 0x00000004 PCH_DP_C: 0x00000000 PCH_DP_D: 0x00000000 TRANS_DP_CTL_A: 0x60000418 (disable port none 6bpc +vsync +hsync) TRANS_DP_CTL_B: 0x60000018 (disable port none 8bpc +vsync +hsync) TRANS_DP_CTL_C: 0x60000018 (disable port none 8bpc +vsync +hsync) BLC_PWM_CPU_CTL2: 0x80000000 BLC_PWM_CPU_CTL: 0x000003d0 BLC_PWM_PCH_CTL1: 0x80000000 BLC_PWM_PCH_CTL2: 0x03d003d0 PCH_PP_STATUS: 0xc0000008 (on, ready, sequencing idle) PCH_PP_CONTROL: 0xabcd0003 (blacklight disabled, power down on reset, panel on) PCH_PP_ON_DELAYS: 0x025807d0 PCH_PP_OFF_DELAYS: 0x01f407d0 PCH_PP_DIVISOR: 0x00186905 and VBIOS dump (see the guide) for display issue. echo 1 > /sys/devices/pci0000:00/0000:00:02.0/rom bash: /sys/devices/pci0000:00/0000:00:02.0/rom: Permission denied xubuntu@xubuntu:~/Desktop$ sudo echo 1 > /sys/devices/pci0000:00/0000:00:02.0/rom bash: /sys/devices/pci0000:00/0000:00:02.0/rom: Permission denied Um yeah... :D -- for GPU hang, get the last batch buffer (see the guide). N/A Additional info: This problem did not occur in a Natty Live CD environment: xserver-xorg-video-intel 2:2.14.0-4ubuntu7