Created attachment 81920 [details] gdb backtrace Received SIGSEGV at weston_compositor_stack_plane()->wl_list_insert() in Weston when hot-plugging HDMI display. See attached gdb backtrace and Weston output log. Steps ------ 1. On laptop with LVDS and HDMI connector, ensure HDMI is unplugged. 2. Launch weston --backend=drm-backend.so 3. Hot-plug HDMI display 4. Hot-unplug HDMI display 5. Hot-plug HDMI display again. 6. Observe Weston SEGV Software -------- wayland (master) heads/master-0-g2e07587 fontconfig (master) heads/master-0-gcbf06d7 drm (master) libdrm-2.4.46-0-gc6d73cf mesa (master) heads/master-0-g84f367e libxkbcommon (master) heads/master-0-g6f06eb5 pixman (master) heads/master-0-g279bdcd cairo (master) heads/master-0-g7b8fc77 weston (master) heads/master-0-gb08b329
Created attachment 81921 [details] weston output log
Created attachment 81922 [details] gdb inspect elm->next is NULL
Created attachment 81936 [details] weston-desktop-shell gdb backtrace The weston-desktop-shell dies on the first hotplug step.
(In reply to comment #3) > Created attachment 81936 [details] > weston-desktop-shell gdb backtrace > > The weston-desktop-shell dies on the first hotplug step. Same weston-desktop-shell backtrace as bug 66531
The two issues were fixed by: commit 3c36bf348693443d47189ed45f2b3b74c0978803 Author: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com> Date: Fri Jul 5 16:05:26 2013 +0300 compositor: Remove a plane from the compositor list when releasing it Weston would crash when hot plugging/unplugging outputs using the DRM backend due to a corrupted plane list. https://bugs.freedesktop.org/show_bug.cgi?id=66530 https://bugs.freedesktop.org/show_bug.cgi?id=66529 and commit e4925495365abcfa5a92bb462a79b92af6d56f26 Author: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com> Date: Fri Jul 5 16:05:28 2013 +0300 desktop-shell: Don't crash on output hotplug The panel and background were never created for hotplugged outputs and since some parts of the code assume that they always exist that would lead to desktop-shell client to crash in that case. This was easier to spot when the display was locked, because Weston respawns the shell client and the user might not notice since there is no flicker. https://bugs.freedesktop.org/show_bug.cgi?id=66531
Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.