The scenario described in comment #25 is not really a common real world use case. I for one expect lightdm/X to not restart properly in switching between X and XMir. It's just never worked very reliably in doing so. And that's true for intel graphics too, in my experience.
So have we ever seen this bug occur in the more common (and more important) use case of booting straight into XMir? -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xserver-xorg-video-ati in Ubuntu. https://bugs.launchpad.net/bugs/1204939 Title: Unity doesn't start on ATI test machine (Mir fails to respond to drm_auth_magic request) Status in Mir: Triaged Status in “xserver-xorg-video-ati” package in Ubuntu: New Bug description: Sometimes when running on the i386 ATI jenkins box, XMir hangs when Compiz is started. When it's hung, it's blocked in DRI2Authenticate, in mir_wait_for on the results of mir_drm_auth_magic. Applying http://paste.ubuntu.com/5983202/ to Mir to debug this, we get: Client output - http://paste.ubuntu.com/5981035/ Server output - http://paste.ubuntu.com/5981019/ So it appears that the second drm_auth_magic request is written to the socket but Mir never responds to it. I have no idea why, though. When I attached gdb to unity-system- compositor in the hung case there didn't seem to be any deadlocked thread or the like; everything seemed to be waiting on input. ==== Original report ==== The log files are deceptive - the error comes from the failsafe X session which is started for some reason. LightDM, unity-system-compositor, and XMir all come up fine and have no unexpected log output. gnome-session.log, however, has """ I/O error : Bad file descriptor /usr/share/compiz/place.xml:1: parser error : Document is empty ^ /usr/share/compiz/place.xml:1: parser error : Start tag expected, '<' not found ^ I/O error : Bad file descriptor compizconfig - Info: Backend : gsettings compizconfig - Info: Integration : true compizconfig - Info: Profile : unity compiz (core) - Info: Loading plugin: composite compiz (core) - Info: Starting plugin: composite compiz (core) - Info: Loading plugin: opengl (polkit-gnome-authentication-agent-1:10828): polkit-gnome-1-WARNING **: Unable to determine the session we are in: No session for pid 10828 compiz (core) - Info: Unity is fully supported by your hardware. compiz (core) - Info: Unity is not supported by your hardware. Enabling software rendering instead (slow). compiz (core) - Info: Starting plugin: opengl """ To manage notifications about this bug go to: https://bugs.launchpad.net/mir/+bug/1204939/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
