Date: Sun, 26 Apr 2009 02:12:07 +0400 From: Artem Kim <artem_kim@inbox.ru> To: Robert Noland <rnoland@freebsd.org> Cc: freebsd-x11@freebsd.org, freebsd-stable@freebsd.org Subject: Re: 7.2-PRERELEASE X-server hang in "drmwtq" Message-ID: <200904260212.07847.artem_kim@inbox.ru> In-Reply-To: <1240691841.1946.37.camel@balrog.2hip.net> References: <200904030223.27059.artem_kim@inbox.ru> <200904260018.36884.artem_kim@inbox.ru> <1240691841.1946.37.camel@balrog.2hip.net>
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> > Apr 25 23:44:04 test kernel: [drm: pid782: drm_ioctl] pid = 782, cmd = > > 0x80046457, nr = 0x57, dev 0xffffff0001556d00, auth = 1 > > Apr 25 23:44:04 test kernel: [drm: pid782: drm_ioctl] returning 4 > > Ok, so what this is saying is that pid 782 is waiting on the rendering > engine to catch up. The "returning 4" part says that we were > interrupted while we were waiting. libdrm retries the wait, which > should return immediately if the engine has caught up now. It never > appears to catch up, so either the counter is getting corrupted or we > failed to get the commands submitted to the card like we thought, or we > have locked up the GPU. > > What does it take to recover from this? Do you have to reboot, or is > killing the process that initiated the wait sufficient? > > robert. In most cases, the system will remain available through the network. The computer can be turned off via acpi power button. However, if you do kill -KILL <XORG-PID>, after it is impossible to shut down the system correctly. The system continues to be available through the network, Xorg is activated and holds up to 100% of one of the cores CPU. In the kernel messages appear: Apr 26 01:30:05 test kernel: [drm:pid1107:radeon_do_wait_for_fifo] wait for fifo failed status : 0x8411413D 0x9C000800 Apr 26 01:30:05 test kernel: [drm:pid1107:radeon_do_release] radeon_do_cp_idle -16 Apr 26 01:30:05 test kernel: [drm:pid1107:radeon_do_cp_idle] Reboot the system is possible only via a hardware reset.
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