https://bugs.freedesktop.org/show_bug.cgi?id=92258
--- Comment #1 from russianneuromancer@ya.ru --- Created attachment 118908 --> https://bugs.freedesktop.org/attachment.cgi?id=118908&action=edit netconsole log
With Linux 4.3rc5 system became unresponsive after crash, there is even no reaction when I press NumLock button (NumLock led doesn't change state) but kernel continue to send backtraces via netconsole for some time. netconsole.log is attached. This crash happen only if Steam started on Radeon HD 6650M via DRI_PRIME. This crash seems like could be triggered only by DRI3 and GLAMOR combination, at least I was unable to easily reproduce it with DRI2&EXA and DRI3&EXA combinations (DRI2&GLAMOR crash Xorg on Steam start, so I unable to test this issue with this combination).