https://bugzilla.kernel.org/show_bug.cgi?id=60523 Alex Belykh <albel727@xxxxxx> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |albel727@xxxxxx --- Comment #46 from Alex Belykh <albel727@xxxxxx> --- Created attachment 124101 --> https://bugzilla.kernel.org/attachment.cgi?id=124101&action=edit output of lspci -vv I experience similar issue with HD4730, although lockup is rather unavoidable than "hard to trigger". Booting with radeon.dpm=1 and two monitors attached results in periodic (every 15-45 sec) lockups (for ~7-15 sec), until one of them results in a reboot (most of the time during bootup, before even X is started). radeon.dpm=0 seems to boot up and work fine (although I think I had unexplainable loud fan spinups after some time, need to test that further). Bisecting kernel didn't yield anything useful. It just pointed me at 66229b200598a3b66b839d1759ff3f5b17ac5639 "drm/radeon/kms: add dpm support for rv7xx (v4)". Latest drm-next kernel (commit ef64cf9d06049e4e9df661f3be60b217e476bee1) didn't help either. The abovementioned patch for fixing arrays' size applied over 66229b2 didn't alleviate the problem in the slightest (gcc 4.7.3 though). Funnily enough, if I boot with either of monitors detached, it boots and works fine, and if I then reattach the second monitor and connect it with xrandr, everything keeps working fine. Disconnecting a monitor every time one needs to reboot is a drag, though. -- You are receiving this mail because: You are watching the assignee of the bug. _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel