Date: Fri, 08 Apr 2016 21:18:16 +0200 From: Bengt Ahlgren <bengta@sics.se> To: freebsd-x11@freebsd.org Subject: x11/nvidia-driver versions 358.16 and above - lockup when X server starts Message-ID: <uh7bn5j29l3.fsf@P142s.sics.se>
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There seems to be a locking problem in the newer nvidia drivers (358.16 and above that have the new nvidia-modeset.ko module). These are not in the ports tree, but a port patch is being worked on to update it: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=201340 With a WITNESS kernel, my system always locks up when the X server starts after printing this: Apr 8 19:44:11 ivy kernel: acquiring duplicate lock of same type: "os.lock_sx" Apr 8 19:44:11 ivy kernel: 1st os.lock_sx @ nvidia_os.c:593 Apr 8 19:44:11 ivy kernel: 2nd os.lock_sx @ nvidia_os.c:593 Apr 8 19:44:11 ivy kernel: KDB: stack backtrace: Apr 8 19:44:11 ivy kernel: db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe06651c7410 Apr 8 19:44:11 ivy kernel: kdb_backtrace() at kdb_backtrace+0x39/frame 0xfffffe06651c74c0 Apr 8 19:44:11 ivy kernel: witness_checkorder() at witness_checkorder+0xe24/frame 0xfffffe06651c7550 Apr 8 19:44:11 ivy kernel: _sx_xlock() at _sx_xlock+0x75/frame 0xfffffe06651c7590 Apr 8 19:44:11 ivy kernel: os_acquire_mutex() at os_acquire_mutex+0x32/frame 0xfffffe06651c75b0 Apr 8 19:44:11 ivy kernel: _nv014117rm() at _nv014117rm+0x18/frame 0xfffffe000a188e60 Apr 8 19:44:11 ivy kernel: dmapbase() at 0xfffff80011527800 The X server gets at least this far: [ 164.014] (==) NVIDIA(0): Depth 24, (==) framebuffer bpp 32 [ 164.014] (==) NVIDIA(0): RGB weight 888 [ 164.014] (==) NVIDIA(0): Default visual is TrueColor [ 164.014] (==) NVIDIA(0): Using gamma correction (1.0, 1.0, 1.0) [ 164.015] (**) NVIDIA(0): Enabling 2D acceleration Without WITNESS, it locks up perhaps 1/3 of the time, and works fine afterways if it didn't. I run FreeBSD 10.3-PRERELEASE amd64 r296673 on a desktop with a Z77 motherboard and a GeForce GTX 550 Ti. Is there anything that the FreeBSD community can do with this info? I have submitted a problem report to NVIDIA. Bengt
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