Seemed to lag a bit more before it finally crashed though if that helps. The Xid 69 errors are the lag where it usually would crash.
Mar 13 17:22:32 homer kernel: [ 672.091282] NVRM: Xid (PCI:0000:09:00): 13, Graphics Exception: ChID 0023, Class 0000b197, Offset 00002390, Data 00000000
Mar 13 17:22:34 homer kernel: [ 673.632970] NVRM: Xid (PCI:0000:09:00): 69, Class Error: ChId 0023, Class 0000b197, Offset 0000238c, Data 20000e90, ErrorCode 0000000c
Mar 13 17:22:34 homer kernel: [ 673.743257] NVRM: Xid (PCI:0000:09:00): 69, Class Error: ChId 0023, Class 0000b197, Offset 000017d0, Data 01000001, ErrorCode 0000000c
Mar 13 17:22:36 homer kernel: [ 675.890269] NVRM: Xid (PCI:0000:09:00): 69, Class Error: ChId 0023, Class 0000b197, Offset 00001a14, Data 20000000, ErrorCode 0000000c
Mar 13 17:22:36 homer kernel: [ 676.194977] NVRM: Xid (PCI:0000:09:00): 69, Class Error: ChId 0023, Class 0000b197, Offset 00002384, Data 01000001, ErrorCode 0000000c
Mar 13 17:22:37 homer kernel: [ 676.789996] NVRM: Xid (PCI:0000:09:00): 69, Class Error: ChId 0023, Class 0000b197, Offset 0000238c, Data 20000020, ErrorCode 0000000c
Mar 13 17:22:38 homer kernel: [ 677.764137] NVRM: Xid (PCI:0000:09:00): 69, Class Error: ChId 0023, Class 0000b197, Offset 0000204c, Data 20010811, ErrorCode 0000000c
Mar 13 17:22:42 homer kernel: [ 681.548393] NVRM: Xid (PCI:0000:09:00): 69, Class Error: ChId 0023, Class 0000b197, Offset 0000204c, Data 20010811, ErrorCode 0000000c
Mar 13 17:22:43 homer kernel: [ 682.398117] NVRM: Xid (PCI:0000:09:00): 69, Class Error: ChId 0023, Class 0000b197, Offset 0000238c, Data 20000020, ErrorCode 0000000c
Mar 13 17:22:46 homer kernel: [ 685.547959] NVRM: Xid (PCI:0000:09:00): 69, Class Error: ChId 0023, Class 0000b197, Offset 0000238c, Data 200010c0, ErrorCode 0000000c
Mar 13 17:22:46 homer kernel: [ 685.818215] NVRM: Xid (PCI:0000:09:00): 69, Class Error: ChId 0023, Class 0000b197, Offset 00002384, Data 20000001, ErrorCode 0000000c
Mar 13 17:22:47 homer kernel: [ 686.251990] NVRM: Xid (PCI:0000:09:00): 69, Class Error: ChId 0023, Class 0000b197, Offset 0000238c, Data 20000020, ErrorCode 0000000c
Mar 13 17:22:47 homer kernel: [ 686.931023] NVRM: Xid (PCI:0000:09:00): 69, Class Error: ChId 0023, Class 0000b197, Offset 00000d7c, Data 20000000, ErrorCode 0000000c
Mar 13 17:22:47 homer kernel: [ 687.018914] NVRM: Xid (PCI:0000:09:00): 69, Class Error: ChId 0023, Class 0000b197, Offset 0000204c, Data 00000130, ErrorCode 0000000c
Mar 13 17:22:47 homer kernel: [ 687.223497] NVRM: Xid (PCI:0000:09:00): 69, Class Error: ChId 0023, Class 0000b197, Offset 00000d7c, Data 01000000, ErrorCode 0000000c
Mar 13 17:22:49 homer kernel: [ 688.627610] NVRM: Xid (PCI:0000:09:00): 69, Class Error: ChId 0023, Class 0000b197, Offset 00002384, Data 20000001, ErrorCode 0000000c
Mar 13 17:22:50 homer kernel: [ 690.179862] NVRM: Xid (PCI:0000:09:00): 69, Class Error: ChId 0023, Class 0000b197, Offset 00002380, Data 01004100, ErrorCode 0000000c
Mar 13 17:22:51 homer kernel: [ 690.447789] NVRM: Xid (PCI:0000:09:00): 69, Class Error: ChId 0023, Class 0000b197, Offset 00002490, Data 01000010, ErrorCode 0000000c
Mar 13 17:23:03 homer kernel: [ 702.764487] NVRM: Xid (PCI:0000:09:00): 69, Class Error: ChId 0023, Class 0000b197, Offset 00002380, Data 01004100, ErrorCode 0000000c
Mar 13 17:23:04 homer kernel: [ 703.851828] NVRM: Xid (PCI:0000:09:00): 13, Graphics Exception: Class 0x0 Subchannel 0x0 Mismatch
Mar 13 17:23:04 homer kernel: [ 703.851836] NVRM: Xid (PCI:0000:09:00): 13, Graphics Exception: ESR 0x4041b0=0x0
Mar 13 17:23:04 homer kernel: [ 703.851840] NVRM: Xid (PCI:0000:09:00): 13, Graphics Exception: ESR 0x404000=0x80000002
Mar 13 17:23:04 homer kernel: [ 703.851979] NVRM: Xid (PCI:0000:09:00): 13, Graphics Exception: ChID 0023, Class 0000b197, Offset 000023a8, Data 00000000
Mar 13 17:23:08 homer kernel: [ 707.864515] NVRM: Xid (PCI:0000:09:00): 69, Class Error: ChId 0023, Class 0000b197, Offset 0000037c, Data 20000001, ErrorCode 0000000c
Mar 13 17:23:09 homer kernel: [ 708.414417] NVRM: Xid (PCI:0000:09:00): 69, Class Error: ChId 0023, Class 0000b197, Offset 0000196c, Data 01000000, ErrorCode 0000000c
Mar 13 17:23:09 homer kernel: [ 708.785720] NVRM: Xid (PCI:0000:09:00): 13, Graphics Exception: MISSING_MACRO_DATA
Mar 13 17:23:09 homer kernel: [ 708.785731] NVRM: Xid (PCI:0000:09:00): 13, Graphics Exception: ESR 0x404490=0x80000001
Mar 13 17:23:09 homer kernel: [ 708.785873] NVRM: Xid (PCI:0000:09:00): 13, Graphics Exception: ChID 0023, Class 0000b197, Offset 00002390, Data 00000000
Mar 13 17:23:10 homer kernel: [ 709.300719] NVRM: Xid (PCI:0000:09:00): 69, Class Error: ChId 0023, Class 0000b197, Offset 000017e4, Data 80000585, ErrorCode 0000000d
Mar 13 17:23:10 homer kernel: [ 709.342937] NVRM: Xid (PCI:0000:09:00): 69, Class Error: ChId 0023, Class 0000b197, Offset 00000fc4, Data 2000ffff, ErrorCode 0000000c
Mar 13 17:23:11 homer kernel: [ 710.443406] NVRM: Xid (PCI:0000:09:00): 69, Class Error: ChId 0023, Class 0000b197, Offset 0000238c, Data 01000e30, ErrorCode 0000000c
Mar 13 17:23:11 homer kernel: [ 710.876120] NVRM: Xid (PCI:0000:09:00): 69, Class Error: ChId 0023, Class 0000b197, Offset 00002380, Data 01004100, ErrorCode 0000000c
Mar 13 17:23:12 homer kernel: [ 711.715389] NVRM: Xid (PCI:0000:09:00): 69, Class Error: ChId 0023, Class 0000b197, Offset 0000196c, Data 20000000, ErrorCode 0000000c
Mar 13 17:23:14 homer kernel: [ 714.058767] NVRM: Xid (PCI:0000:09:00): 69, Class Error: ChId 0023, Class 0000b197, Offset 0000161c, Data 200505f2, ErrorCode 0000000c
Mar 13 17:23:16 homer kernel: [ 715.238097] NVRM: Xid (PCI:0000:09:00): 69, Class Error: ChId 0023, Class 0000b197, Offset 0000204c, Data 20010811, ErrorCode 0000000c
Mar 13 17:23:17 homer kernel: [ 716.948795] NVRM: Xid (PCI:0000:09:00): 69, Class Error: ChId 0023, Class 0000b197, Offset 00000108, Data 20010d35, ErrorCode 0000000b
Mar 13 17:23:17 homer kernel: [ 717.071082] NVRM: Xid (PCI:0000:09:00): 69, Class Error: ChId 0023, Class 0000b197, Offset 00000f64, Data 21000100, ErrorCode 00000004
Mar 13 17:23:18 homer kernel: [ 717.532508] NVRM: Xid (PCI:0000:09:00): 13, Graphics Exception: Class 0x0 Subchannel 0x0 Mismatch
Mar 13 17:23:18 homer kernel: [ 717.532515] NVRM: Xid (PCI:0000:09:00): 13, Graphics Exception: ESR 0x4041b0=0x0
Mar 13 17:23:18 homer kernel: [ 717.532519] NVRM: Xid (PCI:0000:09:00): 13, Graphics Exception: ESR 0x404000=0x80000002
Mar 13 17:23:18 homer kernel: [ 717.532662] NVRM: Xid (PCI:0000:09:00): 13, Graphics Exception: ChID 0023, Class 0000b197, Offset 00001b0c, Data 1000f010
Mar 13 17:23:18 homer kernel: [ 717.532886] NVRM: Xid (PCI:0000:09:00): 32, Channel ID 00000023 intr 02000000
Mar 13 17:23:19 homer kernel: [ 718.895239] NVRM: Xid (PCI:0000:09:00): 69, Class Error: ChId 0023, Class 0000b197, Offset 0000238c, Data 20000020, ErrorCode 0000000c
Mar 13 17:23:20 homer kernel: [ 720.138353] NVRM: Xid (PCI:0000:09:00): 69, Class Error: ChId 0023, Class 0000b197, Offset 0000238c, Data 20000020, ErrorCode 0000000c
Mar 13 17:23:21 homer kernel: [ 720.258999] NVRM: Xid (PCI:0000:09:00): 69, Class Error: ChId 0023, Class 0000b197, Offset 00001ce0, Data 20000000, ErrorCode 0000000c
Mar 13 17:23:22 homer kernel: [ 722.166392] NVRM: Xid (PCI:0000:09:00): 13, Graphics Exception: ESR 0x405848=0x80000000
Mar 13 17:23:22 homer kernel: [ 722.166412] NVRM: Xid (PCI:0000:09:00): 13, Graphics Exception: Shader Program Header 18 Error
Mar 13 17:23:22 homer kernel: [ 722.166418] NVRM: Xid (PCI:0000:09:00): 13, Graphics Exception: ESR 0x405840=0x82040000
Mar 13 17:23:22 homer kernel: [ 722.166557] NVRM: Xid (PCI:0000:09:00): 13, Graphics Exception: ChID 0023, Class 0000b197, Offset 00002390, Data 00000000