[Desktop-packages] [Bug 1553328] Re: Mir/Unity8 crashes/freezes on nouveau (nv50) in pushbuf_kref() especially with multiple monitors, webbrowser-app or system settings
Regardless of whether you have a single GPU or multiple GPUs, using OpenGL is a matter of "send it commands quickly and then forget (the GPU will complete them later)". So I'm not sure why QSG would bother with multi-threading GL at all. Similarly Mir doesn't really need to do the multi-threaded compositing it does, but most days it doesn't hurt us. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to mesa in Ubuntu. https://bugs.launchpad.net/bugs/1553328 Title: Mir/Unity8 crashes/freezes on nouveau (nv50) in pushbuf_kref() especially with multiple monitors, webbrowser-app or system settings Status in Canonical System Image: Incomplete Status in Mir: Invalid Status in Nouveau Xorg driver: Unknown Status in libdrm package in Ubuntu: Triaged Status in mesa package in Ubuntu: Invalid Status in mir package in Ubuntu: Invalid Status in qtmir package in Ubuntu: Incomplete Bug description: Unit8 froze up while I was trying to open system settings. ProblemType: Crash DistroRelease: Ubuntu 16.04 Package: unity8 8.11+16.04.20160216.1-0ubuntu1 ProcVersionSignature: Ubuntu 4.4.0-9.24-generic 4.4.3 Uname: Linux 4.4.0-9-generic x86_64 ApportVersion: 2.20-0ubuntu3 Architecture: amd64 Date: Fri Mar 4 19:12:54 2016 ExecutablePath: /usr/bin/unity8 InstallationDate: Installed on 2015-05-10 (299 days ago) InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422) ProcCmdline: unity8 SegvAnalysis: Segfault happened at: 0x7f58d568706c:mov0x8(%rsi),%edx PC (0x7f58d568706c) ok source "0x8(%rsi)" (0x0008) not located in a known VMA region (needed readable region)! destination "%edx" ok Stack memory exhausted (SP below stack segment) SegvReason: reading NULL VMA Signal: 11 SourcePackage: unity8 StacktraceTop: ?? () from /usr/lib/x86_64-linux-gnu/libdrm_nouveau.so.2 ?? () from /usr/lib/x86_64-linux-gnu/libdrm_nouveau.so.2 ?? () from /usr/lib/x86_64-linux-gnu/dri/nouveau_dri.so ?? () from /usr/lib/x86_64-linux-gnu/dri/nouveau_dri.so ?? () from /usr/lib/x86_64-linux-gnu/mesa-egl/libEGL.so.1 Title: unity8 crashed with SIGSEGV UpgradeStatus: Upgraded to xenial on 2015-11-07 (118 days ago) UserGroups: adm autopilot cdrom dip lpadmin plugdev sambashare sudo To manage notifications about this bug go to: https://bugs.launchpad.net/canonical-devices-system-image/+bug/1553328/+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
[Desktop-packages] [Bug 1553328] Re: Mir/Unity8 crashes/freezes on nouveau (nv50) in pushbuf_kref() especially with multiple monitors, webbrowser-app or system settings
I have Qt configured (in QtUbuntu/QtMir) to use multi-threaded GL rendering, so we're probably hitting Nouveau's limitations here. As workaround, I can add code to QtUbuntu/QtMir use single-threaded GL for Nouveau. If this is easily reproduced, can you try initctl set-env --global QSG_RENDER_LOOP=basic and see if everything is more stable? If so, the workaround should do the trick ** Changed in: qtmir (Ubuntu) Status: Invalid => Incomplete -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to mesa in Ubuntu. https://bugs.launchpad.net/bugs/1553328 Title: Mir/Unity8 crashes/freezes on nouveau (nv50) in pushbuf_kref() especially with multiple monitors, webbrowser-app or system settings Status in Canonical System Image: Incomplete Status in Mir: Invalid Status in Nouveau Xorg driver: Unknown Status in libdrm package in Ubuntu: Triaged Status in mesa package in Ubuntu: Invalid Status in mir package in Ubuntu: Invalid Status in qtmir package in Ubuntu: Incomplete Bug description: Unit8 froze up while I was trying to open system settings. ProblemType: Crash DistroRelease: Ubuntu 16.04 Package: unity8 8.11+16.04.20160216.1-0ubuntu1 ProcVersionSignature: Ubuntu 4.4.0-9.24-generic 4.4.3 Uname: Linux 4.4.0-9-generic x86_64 ApportVersion: 2.20-0ubuntu3 Architecture: amd64 Date: Fri Mar 4 19:12:54 2016 ExecutablePath: /usr/bin/unity8 InstallationDate: Installed on 2015-05-10 (299 days ago) InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422) ProcCmdline: unity8 SegvAnalysis: Segfault happened at: 0x7f58d568706c:mov0x8(%rsi),%edx PC (0x7f58d568706c) ok source "0x8(%rsi)" (0x0008) not located in a known VMA region (needed readable region)! destination "%edx" ok Stack memory exhausted (SP below stack segment) SegvReason: reading NULL VMA Signal: 11 SourcePackage: unity8 StacktraceTop: ?? () from /usr/lib/x86_64-linux-gnu/libdrm_nouveau.so.2 ?? () from /usr/lib/x86_64-linux-gnu/libdrm_nouveau.so.2 ?? () from /usr/lib/x86_64-linux-gnu/dri/nouveau_dri.so ?? () from /usr/lib/x86_64-linux-gnu/dri/nouveau_dri.so ?? () from /usr/lib/x86_64-linux-gnu/mesa-egl/libEGL.so.1 Title: unity8 crashed with SIGSEGV UpgradeStatus: Upgraded to xenial on 2015-11-07 (118 days ago) UserGroups: adm autopilot cdrom dip lpadmin plugdev sambashare sudo To manage notifications about this bug go to: https://bugs.launchpad.net/canonical-devices-system-image/+bug/1553328/+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
[Desktop-packages] [Bug 1553328] Re: Mir/Unity8 crashes/freezes on nouveau (nv50) in pushbuf_kref() especially with multiple monitors, webbrowser-app or system settings
Actually, might be easier/more-reliable just to edit /etc/environment and add "QSG_RENDER_LOOP=basic" and restart. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to mesa in Ubuntu. https://bugs.launchpad.net/bugs/1553328 Title: Mir/Unity8 crashes/freezes on nouveau (nv50) in pushbuf_kref() especially with multiple monitors, webbrowser-app or system settings Status in Canonical System Image: Incomplete Status in Mir: Invalid Status in Nouveau Xorg driver: Unknown Status in libdrm package in Ubuntu: Triaged Status in mesa package in Ubuntu: Invalid Status in mir package in Ubuntu: Invalid Status in qtmir package in Ubuntu: Incomplete Bug description: Unit8 froze up while I was trying to open system settings. ProblemType: Crash DistroRelease: Ubuntu 16.04 Package: unity8 8.11+16.04.20160216.1-0ubuntu1 ProcVersionSignature: Ubuntu 4.4.0-9.24-generic 4.4.3 Uname: Linux 4.4.0-9-generic x86_64 ApportVersion: 2.20-0ubuntu3 Architecture: amd64 Date: Fri Mar 4 19:12:54 2016 ExecutablePath: /usr/bin/unity8 InstallationDate: Installed on 2015-05-10 (299 days ago) InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422) ProcCmdline: unity8 SegvAnalysis: Segfault happened at: 0x7f58d568706c:mov0x8(%rsi),%edx PC (0x7f58d568706c) ok source "0x8(%rsi)" (0x0008) not located in a known VMA region (needed readable region)! destination "%edx" ok Stack memory exhausted (SP below stack segment) SegvReason: reading NULL VMA Signal: 11 SourcePackage: unity8 StacktraceTop: ?? () from /usr/lib/x86_64-linux-gnu/libdrm_nouveau.so.2 ?? () from /usr/lib/x86_64-linux-gnu/libdrm_nouveau.so.2 ?? () from /usr/lib/x86_64-linux-gnu/dri/nouveau_dri.so ?? () from /usr/lib/x86_64-linux-gnu/dri/nouveau_dri.so ?? () from /usr/lib/x86_64-linux-gnu/mesa-egl/libEGL.so.1 Title: unity8 crashed with SIGSEGV UpgradeStatus: Upgraded to xenial on 2015-11-07 (118 days ago) UserGroups: adm autopilot cdrom dip lpadmin plugdev sambashare sudo To manage notifications about this bug go to: https://bugs.launchpad.net/canonical-devices-system-image/+bug/1553328/+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
[Desktop-packages] [Bug 1553328] Re: Mir/Unity8 crashes/freezes on nouveau (nv50) in pushbuf_kref() especially with multiple monitors, webbrowser-app or system settings
See above comment ** Changed in: canonical-devices-system-image Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to mesa in Ubuntu. https://bugs.launchpad.net/bugs/1553328 Title: Mir/Unity8 crashes/freezes on nouveau (nv50) in pushbuf_kref() especially with multiple monitors, webbrowser-app or system settings Status in Canonical System Image: Incomplete Status in Mir: Invalid Status in Nouveau Xorg driver: Unknown Status in libdrm package in Ubuntu: Triaged Status in mesa package in Ubuntu: Invalid Status in mir package in Ubuntu: Invalid Status in qtmir package in Ubuntu: Invalid Bug description: Unit8 froze up while I was trying to open system settings. ProblemType: Crash DistroRelease: Ubuntu 16.04 Package: unity8 8.11+16.04.20160216.1-0ubuntu1 ProcVersionSignature: Ubuntu 4.4.0-9.24-generic 4.4.3 Uname: Linux 4.4.0-9-generic x86_64 ApportVersion: 2.20-0ubuntu3 Architecture: amd64 Date: Fri Mar 4 19:12:54 2016 ExecutablePath: /usr/bin/unity8 InstallationDate: Installed on 2015-05-10 (299 days ago) InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422) ProcCmdline: unity8 SegvAnalysis: Segfault happened at: 0x7f58d568706c:mov0x8(%rsi),%edx PC (0x7f58d568706c) ok source "0x8(%rsi)" (0x0008) not located in a known VMA region (needed readable region)! destination "%edx" ok Stack memory exhausted (SP below stack segment) SegvReason: reading NULL VMA Signal: 11 SourcePackage: unity8 StacktraceTop: ?? () from /usr/lib/x86_64-linux-gnu/libdrm_nouveau.so.2 ?? () from /usr/lib/x86_64-linux-gnu/libdrm_nouveau.so.2 ?? () from /usr/lib/x86_64-linux-gnu/dri/nouveau_dri.so ?? () from /usr/lib/x86_64-linux-gnu/dri/nouveau_dri.so ?? () from /usr/lib/x86_64-linux-gnu/mesa-egl/libEGL.so.1 Title: unity8 crashed with SIGSEGV UpgradeStatus: Upgraded to xenial on 2015-11-07 (118 days ago) UserGroups: adm autopilot cdrom dip lpadmin plugdev sambashare sudo To manage notifications about this bug go to: https://bugs.launchpad.net/canonical-devices-system-image/+bug/1553328/+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
[Desktop-packages] [Bug 1553328] Re: Mir/Unity8 crashes/freezes on nouveau (nv50) in pushbuf_kref() especially with multiple monitors, webbrowser-app or system settings
I'm not sure this is useful to assign to that milestone. The bug and the fix are in the nouveau driver. Although each GL client could work around it by moving all their GL rendering to a single thread, we really shouldn't have to do that just to support nouveau. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to mesa in Ubuntu. https://bugs.launchpad.net/bugs/1553328 Title: Mir/Unity8 crashes/freezes on nouveau (nv50) in pushbuf_kref() especially with multiple monitors, webbrowser-app or system settings Status in Canonical System Image: Confirmed Status in Mir: Invalid Status in Nouveau Xorg driver: Unknown Status in libdrm package in Ubuntu: Triaged Status in mesa package in Ubuntu: Invalid Status in mir package in Ubuntu: Invalid Status in qtmir package in Ubuntu: Invalid Bug description: Unit8 froze up while I was trying to open system settings. ProblemType: Crash DistroRelease: Ubuntu 16.04 Package: unity8 8.11+16.04.20160216.1-0ubuntu1 ProcVersionSignature: Ubuntu 4.4.0-9.24-generic 4.4.3 Uname: Linux 4.4.0-9-generic x86_64 ApportVersion: 2.20-0ubuntu3 Architecture: amd64 Date: Fri Mar 4 19:12:54 2016 ExecutablePath: /usr/bin/unity8 InstallationDate: Installed on 2015-05-10 (299 days ago) InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422) ProcCmdline: unity8 SegvAnalysis: Segfault happened at: 0x7f58d568706c:mov0x8(%rsi),%edx PC (0x7f58d568706c) ok source "0x8(%rsi)" (0x0008) not located in a known VMA region (needed readable region)! destination "%edx" ok Stack memory exhausted (SP below stack segment) SegvReason: reading NULL VMA Signal: 11 SourcePackage: unity8 StacktraceTop: ?? () from /usr/lib/x86_64-linux-gnu/libdrm_nouveau.so.2 ?? () from /usr/lib/x86_64-linux-gnu/libdrm_nouveau.so.2 ?? () from /usr/lib/x86_64-linux-gnu/dri/nouveau_dri.so ?? () from /usr/lib/x86_64-linux-gnu/dri/nouveau_dri.so ?? () from /usr/lib/x86_64-linux-gnu/mesa-egl/libEGL.so.1 Title: unity8 crashed with SIGSEGV UpgradeStatus: Upgraded to xenial on 2015-11-07 (118 days ago) UserGroups: adm autopilot cdrom dip lpadmin plugdev sambashare sudo To manage notifications about this bug go to: https://bugs.launchpad.net/canonical-devices-system-image/+bug/1553328/+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
[Desktop-packages] [Bug 1553328] Re: Mir/Unity8 crashes/freezes on nouveau (nv50) in pushbuf_kref() especially with multiple monitors, webbrowser-app or system settings
** Changed in: canonical-devices-system-image Assignee: (unassigned) => Stephen M. Webb (bregma) ** Changed in: canonical-devices-system-image Milestone: None => u8c-1 -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to mesa in Ubuntu. https://bugs.launchpad.net/bugs/1553328 Title: Mir/Unity8 crashes/freezes on nouveau (nv50) in pushbuf_kref() especially with multiple monitors, webbrowser-app or system settings Status in Canonical System Image: Confirmed Status in Mir: Invalid Status in Nouveau Xorg driver: Unknown Status in libdrm package in Ubuntu: Triaged Status in mesa package in Ubuntu: Invalid Status in mir package in Ubuntu: Invalid Status in qtmir package in Ubuntu: Invalid Bug description: Unit8 froze up while I was trying to open system settings. ProblemType: Crash DistroRelease: Ubuntu 16.04 Package: unity8 8.11+16.04.20160216.1-0ubuntu1 ProcVersionSignature: Ubuntu 4.4.0-9.24-generic 4.4.3 Uname: Linux 4.4.0-9-generic x86_64 ApportVersion: 2.20-0ubuntu3 Architecture: amd64 Date: Fri Mar 4 19:12:54 2016 ExecutablePath: /usr/bin/unity8 InstallationDate: Installed on 2015-05-10 (299 days ago) InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422) ProcCmdline: unity8 SegvAnalysis: Segfault happened at: 0x7f58d568706c:mov0x8(%rsi),%edx PC (0x7f58d568706c) ok source "0x8(%rsi)" (0x0008) not located in a known VMA region (needed readable region)! destination "%edx" ok Stack memory exhausted (SP below stack segment) SegvReason: reading NULL VMA Signal: 11 SourcePackage: unity8 StacktraceTop: ?? () from /usr/lib/x86_64-linux-gnu/libdrm_nouveau.so.2 ?? () from /usr/lib/x86_64-linux-gnu/libdrm_nouveau.so.2 ?? () from /usr/lib/x86_64-linux-gnu/dri/nouveau_dri.so ?? () from /usr/lib/x86_64-linux-gnu/dri/nouveau_dri.so ?? () from /usr/lib/x86_64-linux-gnu/mesa-egl/libEGL.so.1 Title: unity8 crashed with SIGSEGV UpgradeStatus: Upgraded to xenial on 2015-11-07 (118 days ago) UserGroups: adm autopilot cdrom dip lpadmin plugdev sambashare sudo To manage notifications about this bug go to: https://bugs.launchpad.net/canonical-devices-system-image/+bug/1553328/+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
