Same here. I am so far working with only one display because of this. Let me know if I can help in any way.
My system: Ubuntu 14.04LTS, Radeon X1050. In dmesg (The part that looks relevant): [ 1055.476139] show_signal_msg: 36 callbacks suppressed [ 1055.476142] compiz[14080]: segfault at 8 ip 00007fa84a7c7f47 sp 00007fff39071fc0 error 4 in r300_dri.so[7fa84a258000+8f8000] [ 1055.851684] perf: interrupt took too long (2502 > 2500), lowering kernel.perf_event_max_sample_rate to 79750 [ 1056.294922] compiz[14260]: segfault at 8 ip 00007ff1b2e00f47 sp 00007fffd3b98c60 error 4 in r300_dri.so[7ff1b2891000+8f8000] [ 1057.101796] compiz[14279]: segfault at 8 ip 00007fed2a127f47 sp 00007ffc3ddcb040 error 4 in r300_dri.so[7fed29bb8000+8f8000] [ 1057.918309] compiz[14416]: segfault at 8 ip 00007f6dff83bf47 sp 00007ffd7c287270 error 4 in r300_dri.so[7f6dff2cc000+8f8000] [ 1058.759363] compiz[14495]: segfault at 8 ip 00007f40ece94f47 sp 00007ffc35d65950 error 4 in r300_dri.so[7f40ec925000+8f8000] [ 1059.617702] compiz[14526]: segfault at 8 ip 00007f1e9cad1f47 sp 00007ffc26f3ec60 error 4 in r300_dri.so[7f1e9c562000+8f8000] -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1658695 Title: Segfault in r300_dri when 2 monitors connected - Ubuntu 16.04.1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1658695/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
