I'd like to start with noting this issue has been occurring for years on most of our iMacs and I strongly suspect this isn't necessarily "caused" by nouveau but rather by an implementation detail NVidia forgot to document (please remind me why I keep buying their hardware?) Hardware: Apple Inc. iMac13,2/Mac-FC02E91DDD3FA6A4, BIOS IM131.88Z.010A.B05.1211151146 11/15/2012 Software: Archlinux / any nouveau release, currenty running xf86-video-nouveau 1.0.16-1 Using Xorg this iMac hangs maybe 2 or 3 times a day, using Xwayland (using sway, a native wayland implementation) there actually is a backtrace and I have a chance to reboot instead of kill the power. I'd love to help debug this since I assume it only happens when using this specific hardware. To start with - here is a backtrace: Stack trace of thread 765: #0 0x00007f9374fe282f raise (libc.so.6) #1 0x00007f9374fcd672 abort (libc.so.6) #2 0x000055ef04386f6a n/a (Xwayland) #3 0x000055ef0437f645 n/a (Xwayland) #4 0x000055ef0438a7a6 n/a (Xwayland) #5 0x00007f9374fe28b0 __restore_rt (libc.so.6) #6 0x00007f9374fe282f raise (libc.so.6) #7 0x00007f9374fcd672 abort (libc.so.6) #8 0x00007f9375024e78 __libc_message (libc.so.6) #9 0x00007f937502b78a malloc_printerr (libc.so.6) #10 0x00007f937502d007 _int_free (libc.so.6) #11 0x00007f936e02b7da nouveau_bo_ref (libdrm_nouveau.so.2) #12 0x00007f9372866894 n/a (nouveau_dri.so) #13 0x00007f9372a14c87 n/a (nouveau_dri.so) #14 0x00007f93729d6604 n/a (nouveau_dri.so) #15 0x00007f93729d9031 n/a (nouveau_dri.so) #16 0x00007f93729dc5c8 n/a (nouveau_dri.so) #17 0x000055ef0448d8d4 n/a (Xwayland) #18 0x000055ef0449963d n/a (Xwayland) #19 0x000055ef04404ec1 n/a (Xwayland) #20 0x000055ef043e53c8 n/a (Xwayland) #21 0x000055ef043e5933 n/a (Xwayland) #22 0x000055ef04451270 n/a (Xwayland) #23 0x000055ef0434b11d n/a (Xwayland) #24 0x00007f9374fcece3 __libc_start_main (libc.so.6) #25 0x000055ef0434c14e n/a (Xwayland) Stack trace of thread 769: #0 0x00007f93746f2bac pthread_cond_wait@@GLIBC_2.3.2 (libpthread.so.0) #1 0x00007f9372687474 n/a (nouveau_dri.so) #2 0x00007f93726872c8 n/a (nouveau_dri.so) #3 0x00007f93746eca92 start_thread (libpthread.so.0) #4 0x00007f93750a5cd3 __clone (libc.so.6) Stack trace of thread 771: #0 0x00007f93746f2bac pthread_cond_wait@@GLIBC_2.3.2 (libpthread.so.0) #1 0x00007f9372687474 n/a (nouveau_dri.so) #2 0x00007f93726872c8 n/a (nouveau_dri.so) #3 0x00007f93746eca92 start_thread (libpthread.so.0) #4 0x00007f93750a5cd3 __clone (libc.so.6) Stack trace of thread 772: #0 0x00007f93746f2bac pthread_cond_wait@@GLIBC_2.3.2 (libpthread.so.0) #1 0x00007f9372687474 n/a (nouveau_dri.so) #2 0x00007f93726872c8 n/a (nouveau_dri.so) #3 0x00007f93746eca92 start_thread (libpthread.so.0) #4 0x00007f93750a5cd3 __clone (libc.so.6) Stack trace of thread 768: #0 0x00007f93746f2bac pthread_cond_wait@@GLIBC_2.3.2 (libpthread.so.0) #1 0x00007f9372cc81e4 n/a (nouveau_dri.so) #2 0x00007f9372cc7f08 n/a (nouveau_dri.so) #3 0x00007f93746eca92 start_thread (libpthread.so.0) #4 0x00007f93750a5cd3 __clone (libc.so.6) Stack trace of thread 770: #0 0x00007f93746f2bac pthread_cond_wait@@GLIBC_2.3.2 (libpthread.so.0) #1 0x00007f9372687474 n/a (nouveau_dri.so) #2 0x00007f93726872c8 n/a (nouveau_dri.so) #3 0x00007f93746eca92 start_thread (libpthread.so.0) #4 0x00007f93750a5cd3 __clone (libc.so.6)
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