*** This bug is a duplicate of bug 1745799 *** https://bugs.launchpad.net/bugs/1745799
I do not think this is a duplicate of bug #1745799. At this comment I will try to give a code to solve this bug. My symbol Xwaylnd-crash shows the next trace: #6 0x0062b600 in FatalError (f=0x63704e "%s") at ../../../../os/log.c:1015 args = 0xbf9c7844 "\\x\234\277" args2 = 0xbf9c7844 "\\x\234\277" beenhere = 1 #7 0x004b6296 in xwl_log_handler (format=0xb7dc71ea "%s@%u: error %d: %s\n", args=0xbf9c7994 "\027uܷ\255\001") at ../../../../../hw/xwayland/xwayland.c:1137 msg = "wl_surface@429: error 2: Failed to create a texture for surface 429: Failed to create texture 2d due to size/format constraints\n", '\000' <repeats 127 times> #8 0xb7dc5fef in wl_log (fmt=0xb7dc71ea "%s@%u: error %d: %s\n") at ../src/wayland-util.c:404 Problem can be solved by using slicing at shm_buffer_attach() at src/wayland/meta-wayland-buffer.c, if size of texture is too large for graphics card. Code for freeing the bitmap is now positioned after the if. This results into the following code: texture = COGL_TEXTURE (cogl_texture_2d_new_from_bitmap (bitmap)); cogl_texture_set_components (COGL_TEXTURE (texture), components); if (!cogl_texture_allocate (COGL_TEXTURE (texture), error)) { g_clear_pointer (&texture, cogl_object_unref); texture = COGL_TEXTURE (cogl_texture_2d_sliced_new_from_bitmap (bitmap, COGL_TEXTURE_MAX_WASTE)); cogl_texture_set_components (COGL_TEXTURE (texture), components); if (!cogl_texture_allocate (COGL_TEXTURE (texture), error)) g_clear_pointer (&texture, cogl_object_unref); } wl_shm_buffer_end_access (shm_buffer); cogl_object_unref (bitmap); buffer->texture = texture; This code is working and makes it possible to login with wayland with dual screen without any monitors.xml-config on small/old graphic cards. Slicing is causing next message: Oct 13 15:51:36 Gert2 gnome-shell[1994]: Skipping layers 1..n of your pipeline since the first layer is sliced. We don't currently support any multi-texturing with sliced textures but assume layer 0 is the most important to keep -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/1795760 Title: Xwayland crashed with SIGABRT in OsAbort() To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1795760/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp