We are going to need some more info. Can you please copy and paste the output of uname -srm
Can you also please attach the output of lspci -vvnn Finally, please attach the output of xrandr --verbose when the monitor does not work after booting with it connected and also when it does work after hotplugging it. ** Changed in: unity (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to unity in Ubuntu. https://bugs.launchpad.net/bugs/1284767 Title: Unity fails to start with a 4K monitor attached Status in Unity: New Status in “unity” package in Ubuntu: Incomplete Bug description: I am running Ubuntu 12.04 LTS on a Dell XPS 13. This is an Intel i7-3537U integrated graphics setup. When I boot and log in and THEN attach a 4K monitor via DisplayPort everything works well. But when I attach the monitor and then boot, after logging in, Unity fails to start. It seems to be unable to allocate a OpenGL surface. Why the difference between startup and hotplug? [zlynx@slicer 11:29:36 (0) ~] $ unity -v --debug unity-panel-service: no process found [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". /usr/bin/compiz (core) - Debug: Could not stat() file /home/zlynx/.compiz-1/plugins/libcore.so : No such file or directory /usr/bin/compiz (core) - Debug: Could not stat() file /usr/lib/compiz/libcore.so : No such file or directory [New Thread 0x7ffff3b77700 (LWP 5114)] /usr/bin/compiz (core) - Debug: pending request:d /usr/bin/compiz (core) - Debug: - event serial: 1286 /usr/bin/compiz (core) - Debug: - event window 0x3400090 /usr/bin/compiz (core) - Debug: - x: 0 y: 0 width: 0 height: 0 border: 0, sibling: 0x0 /usr/bin/compiz (core) - Debug: pending request: /usr/bin/compiz (core) - Debug: - event serial: 1354 /usr/bin/compiz (core) - Debug: - event window 0x3400093 /usr/bin/compiz (core) - Debug: - x: 1920 y: 0 width: 2160 height: 3840 border: 0, sibling: 0x3400090 /usr/bin/compiz (core) - Debug: pending request: /usr/bin/compiz (core) - Debug: - event serial: 1431 /usr/bin/compiz (core) - Debug: - event window 0x3400096 /usr/bin/compiz (core) - Debug: - x: 0 y: 0 width: 722 height: 457 border: 0, sibling: 0x3400093 /usr/bin/compiz (core) - Debug: Could not stat() file /home/zlynx/.compiz-1/plugins/libccp.so : No such file or directory Checking if settings need to be migrated ...no Checking if internal files need to be migrated ...no Backend : gconf Integration : true Profile : unity Adding plugins Initializing core options...done /usr/bin/compiz (core) - Debug: Could not stat() file /home/zlynx/.compiz-1/plugins/libcomposite.so : No such file or directory Initializing composite options...done /usr/bin/compiz (core) - Debug: Could not stat() file /home/zlynx/.compiz-1/plugins/libopengl.so : No such file or directory Initializing opengl options...done /usr/bin/compiz (core) - Debug: Could not stat() file /home/zlynx/.compiz-1/plugins/libcompiztoolbox.so : No such file or directory /usr/bin/compiz (core) - Debug: Could not stat() file /home/zlynx/.compiz-1/plugins/libdecor.so : No such file or directory Initializing decor options...done /usr/bin/compiz (core) - Debug: Could not stat() file /home/zlynx/.compiz-1/plugins/libvpswitch.so : No such file or directory Initializing vpswitch options...done /usr/bin/compiz (core) - Debug: Could not stat() file /home/zlynx/.compiz-1/plugins/libsnap.so : No such file or directory Initializing snap options...done /usr/bin/compiz (core) - Debug: Could not stat() file /home/zlynx/.compiz-1/plugins/libmousepoll.so : No such file or directory Initializing mousepoll options...done /usr/bin/compiz (core) - Debug: Could not stat() file /home/zlynx/.compiz-1/plugins/libresize.so : No such file or directory Initializing resize options...done /usr/bin/compiz (core) - Debug: Could not stat() file /home/zlynx/.compiz-1/plugins/libplace.so : No such file or directory Initializing place options...done /usr/bin/compiz (core) - Debug: Could not stat() file /home/zlynx/.compiz-1/plugins/libmove.so : No such file or directory Initializing move options...done /usr/bin/compiz (core) - Debug: Could not stat() file /home/zlynx/.compiz-1/plugins/libwall.so : No such file or directory Initializing wall options...done /usr/bin/compiz (core) - Debug: Could not stat() file /home/zlynx/.compiz-1/plugins/libgrid.so : No such file or directory Initializing grid options...done /usr/bin/compiz (core) - Debug: Could not stat() file /home/zlynx/.compiz-1/plugins/libregex.so : No such file or directory /usr/bin/compiz (core) - Debug: Could not stat() file /home/zlynx/.compiz-1/plugins/libimgpng.so : No such file or directory /usr/bin/compiz (core) - Debug: Could not stat() file /home/zlynx/.compiz-1/plugins/libsession.so : No such file or directory Initializing session options...done /usr/bin/compiz (core) - Debug: Could not stat() file /home/zlynx/.compiz-1/plugins/libgnomecompat.so : No such file or directory Initializing gnomecompat options...done /usr/bin/compiz (core) - Debug: Could not stat() file /home/zlynx/.compiz-1/plugins/libanimation.so : No such file or directory Initializing animation options...done /usr/bin/compiz (core) - Debug: Could not stat() file /home/zlynx/.compiz-1/plugins/libfade.so : No such file or directory Initializing fade options...done /usr/bin/compiz (core) - Debug: Could not stat() file /home/zlynx/.compiz-1/plugins/libunitymtgrabhandles.so : No such file or directory Initializing unitymtgrabhandles options...done /usr/bin/compiz (core) - Debug: Could not stat() file /home/zlynx/.compiz-1/plugins/libworkarounds.so : No such file or directory Initializing workarounds options...done /usr/bin/compiz (core) - Debug: Could not stat() file /home/zlynx/.compiz-1/plugins/libscale.so : No such file or directory Initializing scale options...done /usr/bin/compiz (core) - Debug: Could not stat() file /home/zlynx/.compiz-1/plugins/libexpo.so : No such file or directory /usr/bin/compiz (expo) - Warn: failed to bind image to texture Initializing expo options...done /usr/bin/compiz (core) - Debug: Could not stat() file /home/zlynx/.compiz-1/plugins/libezoom.so : No such file or directory Initializing ezoom options...done /usr/bin/compiz (core) - Debug: Could not stat() file /home/zlynx/.compiz-1/plugins/libunityshell.so : No such file or directory [New Thread 0x7fffde046700 (LWP 5116)] [New Thread 0x7fffdd845700 (LWP 5118)] (compiz:5111): GConf-CRITICAL **: gconf_client_add_dir: assertion `gconf_valid_key (dirname, NULL)' failed [New Thread 0x7fffd77bf700 (LWP 5119)] Program received signal SIGBUS, Bus error. 0x00007fffeb6b245d in ?? () from /usr/lib/x86_64-linux-gnu/libdricore9.0.0.so.1 #0 0x00007fffeb6b245d in ?? () from /usr/lib/x86_64-linux-gnu/libdricore9.0.0.so.1 No symbol table info available. #1 0x00007fffeb6b553c in ?? () from /usr/lib/x86_64-linux-gnu/libdricore9.0.0.so.1 No symbol table info available. #2 0x00007fffeb6ba6e5 in ?? () from /usr/lib/x86_64-linux-gnu/libdricore9.0.0.so.1 No symbol table info available. #3 0x00007fffeb6bbf10 in ?? () from /usr/lib/x86_64-linux-gnu/libdricore9.0.0.so.1 No symbol table info available. #4 0x00007fffeb6bc0cd in _mesa_store_teximage () from /usr/lib/x86_64-linux-gnu/libdricore9.0.0.so.1 No symbol table info available. #5 0x00007fffebb552c9 in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so No symbol table info available. #6 0x00007fffeb6a8704 in ?? () from /usr/lib/x86_64-linux-gnu/libdricore9.0.0.so.1 No symbol table info available. #7 0x00007fffeb6a98f0 in _mesa_TexImage2D () from /usr/lib/x86_64-linux-gnu/libdricore9.0.0.so.1 No symbol table info available. #8 0x00007fffe666244b in nux::IOpenGLSurface::InitializeLevel() () from /usr/lib/libnux-graphics-2.0.so.0 No symbol table info available. #9 0x00007fffe66630f9 in nux::IOpenGLTexture2D::IOpenGLTexture2D(unsigned int, unsigned int, unsigned int, nux::BitmapFormat, bool, char const*, int) () from /usr/lib/libnux-graphics-2.0.so.0 No symbol table info available. #10 0x00007fffe6649a0d in nux::GpuDevice::CreateTexture(unsigned int, unsigned int, unsigned int, nux::BitmapFormat, nux::IOpenGLTexture2D**, char const*, int) () from /usr/lib/libnux-graphics-2.0.so.0 No symbol table info available. #11 0x00007fffe664a1a0 in nux::GpuDevice::CreateTexture(int, int, int, nux::BitmapFormat, char const*, int) () from /usr/lib/libnux-graphics-2.0.so.0 No symbol table info available. #12 0x00007fffe6647ae0 in nux::GpuDevice::CreateSystemCapableDeviceTexture(int, int, int, nux::BitmapFormat, char const*, int) () from /usr/lib/libnux-graphics-2.0.so.0 No symbol table info available. #13 0x00007fffe3f9cdfc in nux::WindowCompositor::FormatRenderTargets(int, int) () from /usr/lib/libnux-2.0.so.0 No symbol table info available. #14 0x00007fffe3fa5555 in nux::WindowThread::ThreadCtor(_XDisplay*, unsigned long, __GLXcontextRec*) () from /usr/lib/libnux-2.0.so.0 No symbol table info available. #15 0x00007fffe3f561c7 in nux::CreateFromForeignWindow(unsigned long, __GLXcontextRec*, void (*)(nux::NThread*, void*), void*) () from /usr/lib/libnux-2.0.so.0 No symbol table info available. #16 0x00007fffe4405c6a in unity::UnityScreen::UnityScreen(CompScreen*) () from /usr/lib/compiz/libunityshell.so No symbol table info available. #17 0x00007fffe441a6b8 in PluginClassHandler<unity::UnityScreen, CompScreen, 0>::get(CompScreen*) () from /usr/lib/compiz/libunityshell.so No symbol table info available. #18 0x00007fffe441a85c in CompPlugin::VTableForScreenAndWindow<unity::UnityScreen, unity::UnityWindow>::initScreen(CompScreen*) () from /usr/lib/compiz/libunityshell.so No symbol table info available. #19 0x00007ffff7b95a1c in CompManager::initPlugin(CompPlugin*) () from /usr/lib/libcompiz_core.so.ABI-20120305 No symbol table info available. #20 0x00007ffff7b96451 in CompPlugin::push(CompPlugin*) () from /usr/lib/libcompiz_core.so.ABI-20120305 No symbol table info available. #21 0x00007ffff7b67b0d in compiz::private_screen::PluginManager::updatePlugins() () from /usr/lib/libcompiz_core.so.ABI-20120305 No symbol table info available. #22 0x00007ffff7b68069 in PrivateScreen::processEvents() () from /usr/lib/libcompiz_core.so.ABI-20120305 No symbol table info available. #23 0x00007ffff7b9b287 in CompEventSource::callback() () from /usr/lib/libcompiz_core.so.ABI-20120305 No symbol table info available. #24 0x00007ffff609ff2f in Glib::Source::dispatch_vfunc(_GSource*, int (*)(void*), void*) () from /usr/lib/x86_64-linux-gnu/libglibmm-2.4.so.1 No symbol table info available. #25 0x00007ffff5ba7d13 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 No symbol table info available. #26 0x00007ffff5ba8060 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 No symbol table info available. #27 0x00007ffff5ba845a in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 No symbol table info available. #28 0x000000000040242e in main () No symbol table info available. To manage notifications about this bug go to: https://bugs.launchpad.net/unity/+bug/1284767/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp