Cannot start any Mir server ... std::exception::what: Failed to set DRM crtc

[Daniel van Vugt]

I can't seem to start any mir server any more. It always fails with:

sudo bin/mir_demo_server
ERROR: /home/dan/bzr/mir/toy/src/server/graphics/gbm/gbm_display_buffer.cpp(135): Throw in function mir::graphics::gbm::GBMDisplayBuffer::GBMDisplayBuffer(const std::shared_ptr<mir::graphics::gbm::GBMPlatform>&, const std::shared_ptr<mir::graphics::DisplayReport>&, const std::vector<std::shared_ptr<mir::graphics::gbm::KMSOutput> >&, mir::graphics::gbm::GBMSurfaceUPtr, const mir::geometry::Size&, EGLContext)
Dynamic exception type: boost::exception_detail::clone_impl<boost::exception_detail::error_info_injector<std::runtime_error> >
std::exception::what: Failed to set DRM crtc

Running it locally, or as root does not help. And there's no other Mir server running. Only plain X:
/usr/bin/X :0 -core -auth /var/run/lightdm/root/:0 -nolisten tcp vt8 -novtswitch

[Daniel van Vugt (vanvugt)]

For me this bug is now incomplete. I'm not sure what caused it but I haven't seen it for many days.

[kevin gunn (kgunn72)]

Now when i boot xmir I am not seeing this bug - could this have possibly changed with an updated drm

[kevin gunn (kgunn72)]

lowering priority as its no longer a blocker. should leave open for a while, it may be "resolved indirectly"

[Patrick Hetu (patrick-hetu)]

Got the same error this morning.
Note that it happens after an apt-get dist-upgrade with an update of mesa + reboot

Same error this morning when I plugged an external monitor:

GL_VENDOR = Intel Open Source Technology Center
GL_RENDERER = Mesa DRI Intel(R) Ivybridge Mobile x86/MMX/SSE2
GL_VERSION = OpenGL ES 3.0 Mesa 9.2.1
dm_connection_start
set_active_session '0'
set_active_session
set_active_session '1'
set_active_session
Unable to set active session, unknown client name 1
pause
terminate called after throwing an instance of 'boost::exception_detail::clone_impl<boost::exception_detail::error_info_injector<std::runtime_error> >'
  what(): Failed to set DRM crtc

[Patrick Hetu (patrick-hetu)]

in my case removing ~/.config/monitors.xml and reconfiguring the displays solved the problem.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[kevin gunn (kgunn72)]

is this specific to hw configurations ?
i haven't seen complaints on this any time recently.
please update if you are able to repro.

[Launchpad Janitor (janitor)]

[Expired for unity-system-compositor (Ubuntu) because there has been no activity for 60 days.]

[Launchpad Janitor (janitor)]

[Expired for Mir because there has been no activity for 60 days.]

[Launchpad Janitor (janitor)]

[Expired for mir (Ubuntu) because there has been no activity for 60 days.]