Date: Fri, 04 Nov 2016 10:26:07 +0000 From: bugzilla-noreply@freebsd.org To: x11@FreeBSD.org Subject: maintainer-feedback requested: [Bug 214204] Unable to run OpenCL programs while X11 session is active Message-ID: <bug-214204-7141-PtfIThPJN0@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-214204-7141@https.bugs.freebsd.org/bugzilla/> References: <bug-214204-7141@https.bugs.freebsd.org/bugzilla/>
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Alexey Dokuchaev <danfe@FreeBSD.org> has reassigned Bugzilla Automation <bugzilla@FreeBSD.org>'s request for maintainer-feedback to x11@FreeBSD.org: Bug 214204: Unable to run OpenCL programs while X11 session is active https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=214204 --- Description --- I've decided to play with OpenCL on AMD A8-5550M APU laptop of mine a bit, so I've read our wiki [1], installed necessary ports, googled for a simple OpenCL program source code [2], built it, and run. It ran OK, but only when I switched from my X11 session to console, or if I run it as root. Being inside X, it reports: > radeon: Failed to get PCI ID, error number -13 > Using platform: Clover > No devices found. Check OpenCL installation! devel/clinfo also behaves this way (finds no devices) and spits out the same error. My user belongs to "video" group, and permissions on /dev/dri/* are sane (default, "rw-" for "video" group). -13 indicates "permission denied" (-EACCES). Apparently, similar (or perhaps related) bug was discovered and fixed in Mesa back in 2012 [3]. The code in current Mesa is different though. Perhaps FreeBSD needs special treatment, or original bug resurfaced. I'm not an expert on Mesa codebase but will gladly provide any additional details and happy to test patches. [1] https://wiki.freebsd.org/Graphics/OpenCL [2] http://simpleopencl.blogspot.ru/2013/06/tutorial-simple-start-with-opencl-and-c .html [3] https://lists.freedesktop.org/archives/mesa-commit/2012-July/038068.html
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