I'm marking the nouveau/Mesa crash as high severity. And the secondary Mir crash is only medium because that's not really the problem at all.
Here's the Mesa crash: #9 <signal handler called> No locals. #10 0x00007fe1e4c4f06c in pushbuf_kref () from /tmp/apport_sandbox_hSYpvb/usr/lib/x86_64-linux-gnu/libdrm_nouveau.so.2 No symbol table info available. #11 0x00007fe1e4c4f709 in pushbuf_validate () from /tmp/apport_sandbox_hSYpvb/usr/lib/x86_64-linux-gnu/libdrm_nouveau.so.2 No symbol table info available. #12 0x00007fe1e2fb25ef in nv50_state_validate (nv50=nv50@entry=0x5608093d9c40, mask=mask@entry=4096, validate_list=validate_list@entry=0x7fe1e35ef660 <validate_list_3d>, size=size@entry=25, dirty=dirty@entry=0x5608093da018, bufctx=0x5608093dd6f0) at ../../../../../src/gallium/drivers/nouveau/nv50/nv50_state_validate.c:554 state_mask = <optimized out> ret = <optimized out> i = <optimized out> #13 0x00007fe1e2fb2797 in nv50_state_validate_3d (nv50=nv50@entry=0x5608093d9c40, mask=mask@entry=4096) at ../../../../../src/gallium/drivers/nouveau/nv50/nv50_state_validate.c:564 ret = <optimized out> #14 0x00007fe1e2fb4e01 in nv50_clear (pipe=0x5608093d9c40, buffers=4, color=0x7fe1ebbf5acc, depth=1, stencil=0) at ../../../../../src/gallium/drivers/nouveau/nv50/nv50_surface.c:528 push = 0x56080930e500 fb = 0x5608093dae28 i = <optimized out> j = <optimized out> k = <optimized out> mode = 0 #15 0x00007fe1e2c7ea32 in st_Clear (ctx=0x7fe1ebbf4010, mask=2) at ../../../src/mesa/state_tracker/st_cb_clear.c:463 depthRb = <optimized out> stencilRb = <optimized out> quad_buffers = <optimized out> clear_buffers = 4 i = <optimized out> #16 0x00007fe1eb9249f1 in mir::renderer::gl::Renderer::render(std::vector<std::shared_ptr<mir::graphics::Renderable>, std::allocator<std::shared_ptr<mir::graphics::Renderable> > > const&) const (this=0x7fe1d00008c0, renderables=...) at ./src/renderers/gl/renderer.cpp:246 ** Also affects: mesa (Ubuntu) Importance: Undecided Status: New ** Changed in: mesa (Ubuntu) Importance: Undecided => High ** Summary changed: - unity-system-compositor crashed with SIGABRT in mir::fatal_error_abort() + unity-system-compositor crashed with SIGABRT in mir::fatal_error_abort() [nouveau crashed during glClear()] ** Tags added: nouveau ** Summary changed: - unity-system-compositor crashed with SIGABRT in mir::fatal_error_abort() [nouveau crashed during glClear()] + unity-system-compositor crashed with "Failed to schedule page flip", but only after nouveau crashed in glClear(). ** Also affects: libdrm (Ubuntu) Importance: Undecided Status: New ** Changed in: libdrm (Ubuntu) Importance: Undecided => High ** Tags added: unity8-desktop ** Also affects: canonical-devices-system-image Importance: Undecided Status: New ** Changed in: mir Status: New => Triaged ** Changed in: mir (Ubuntu) Status: New => Triaged -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to mir in Ubuntu. https://bugs.launchpad.net/bugs/1623507 Title: unity-system-compositor crashed with "Failed to schedule page flip", but only after nouveau crashed in glClear(). Status in Canonical System Image: New Status in Mir: Triaged Status in libdrm package in Ubuntu: New Status in mesa package in Ubuntu: New Status in mir package in Ubuntu: Triaged Bug description: 16.10 first unity 8 run ProblemType: Crash DistroRelease: Ubuntu 16.10 Package: unity-system-compositor 0.7.1+16.10.20160824-0ubuntu1 ProcVersionSignature: Ubuntu 4.4.0-9136.55-generic 4.4.16 Uname: Linux 4.4.0-9136-generic x86_64 ApportVersion: 2.20.3-0ubuntu7 Architecture: amd64 Date: Wed Sep 14 10:34:45 2016 ExecutablePath: /usr/sbin/unity-system-compositor GraphicsCard: Subsystem: Micro-Star International Co., Ltd. [MSI] Xeon E3-1200 v3/4th Gen Core Processor Integrated Graphics Controller [1462:7817] NVIDIA Corporation G92 [GeForce 9800 GT] [10de:0614] (rev a2) (prog-if 00 [VGA controller]) Subsystem: eVga.com. Corp. G92 [GeForce 9800 GT] [3842:c988] InstallationDate: Installed on 2016-09-14 (0 days ago) InstallationMedia: Ubuntu 16.10 "Yakkety Yak" - Alpha amd64 (20160913) ProcCmdline: /usr/sbin/unity-system-compositor --disable-inactivity-policy=true --on-fatal-error-abort --file /run/mir_socket --from-dm-fd 11 --to-dm-fd 14 --vt 7 ProcEnviron: Signal: 6 SourcePackage: unity-system-compositor StacktraceTop: mir::fatal_error_abort(char const*, ...) () from /usr/lib/x86_64-linux-gnu/libmircommon.so.6 ?? () from /usr/lib/x86_64-linux-gnu/mir/server-platform/graphics-mesa-kms.so.10 ?? () from /usr/lib/x86_64-linux-gnu/libmirserver.so.41 ?? () from /usr/lib/x86_64-linux-gnu/libmirserver.so.41 ?? () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6 Title: unity-system-compositor crashed with SIGABRT in mir::fatal_error_abort() UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: version.libdrm: libdrm2 2.4.70-1 version.lightdm: lightdm 1.19.4-0ubuntu1 version.mesa: libegl1-mesa-dev N/A To manage notifications about this bug go to: https://bugs.launchpad.net/canonical-devices-system-image/+bug/1623507/+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