XMir not working with nouveau

[Gerry Boland]

Running an NVidia GeForce 8200

I installed the ubuntu-desktop-mir package, rebooted to a black screen (after plymouth). USC and X is running, but nothing on screen (not even cursor).

So digging, I stopped lightdm, and ran mir_demo_server_shell and a mir demo client - that worked.
Next I tried to run XMir with:
sudo Xorg :1 -mir 0 -retro -mirSocket /tmp/mir_socket
which appears to run - I see the screen flicker grey (usual mir-demo-shell background) - black - grey - black

The X instance appears to have hung. Log file: http://pastebin.ubuntu.com/7762468/

Lemme know what more I can do to help

[Gerry Boland (gerboland)]

Backtrace of the X server - looks right?:
(gdb) bt
#0 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1 0x00007f2a3b446d1c in std::condition_variable::wait(std::unique_lock<std::mutex>&) () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#2 0x00007f2a3c06ffcb in MirWaitHandle::wait_for_all() () from /usr/lib/x86_64-linux-gnu/libmirclient.so.8
#3 0x00007f2a426e3472 in xf86DisableUnusedFunctions ()
#4 0x00007f2a426e3bd0 in xf86SetDesiredModes ()
#5 0x00007f2a3a335473 in ?? () from /usr/lib/xorg/modules/drivers/nouveau_drv.so
#6 0x00007f2a3a3357d6 in ?? () from /usr/lib/xorg/modules/drivers/nouveau_drv.so
#7 0x00007f2a426e08ee in ?? ()
#8 0x00007f2a42672766 in ?? ()
#9 0x00007f2a40153ec5 in __libc_start_main (main=0x7f2a4265ddb0, argc=9, argv=0x7fff48c26418, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>,
    stack_end=0x7fff48c26408) at libc-start.c:287
#10 0x00007f2a4265ddde in _start ()

[Gerry Boland (gerboland)]

http://pastebin.ubuntu.com/7767966/ - output of X with -verbose 7

[Daniel van Vugt (vanvugt)]

Can you kill -ABRT (or something) the X server and get a core file, then try to generate an official crash-report? The launchpad retracer will give us more details (stack frames) that are missing from the above stack.

[kevin gunn (kgunn72)]

marking low as we're not investing in xmir-gpu specific issues

[Gerry Boland (gerboland)]

works ok now