On 3.18-rc kernel's I have been intermittently experiencing GPU lockups shortly after startup, accompanied with one or both of the following errors: nouveau E[ PFIFO][0000:01:00.0] read fault at 0x000734a000 [PTE] from PBDMA0/HOST_CPU on channel 0x007faa3000 [unknown] nouveau E[ DRM] GPU lockup - switching to software fbcon I was able to trace the issue with bisect to commit 809e9447b92ffe1346b2d6ec390e212d5307f61c "drm/nouveau: use shared fences for readable objects". The lockups appear to have cleared up since reverting that and a few related followup commits: 809e9447: "drm/nouveau: use shared fences for readable objects" 055dffdf: "drm/nouveau: bump driver patchlevel to 1.2.1" e3be4c23: "drm/nouveau: specify if interruptible wait is desired in nouveau_fence_sync" 15a996bb: "drm/nouveau: assign fence_chan->name correctly" For reference here is what the driver reports about my hardware: nouveau 0000:01:00.0: enabling device (0006 -> 0007) nouveau [ DEVICE][0000:01:00.0] BOOT0 : 0x0e7290a2 nouveau [ DEVICE][0000:01:00.0] Chipset: GK107 (NVE7) nouveau [ DEVICE][0000:01:00.0] Family : NVE0 nouveau [ VBIOS][0000:01:00.0] checking PRAMIN for image... nouveau [ VBIOS][0000:01:00.0] ... appears to be valid nouveau [ VBIOS][0000:01:00.0] using image from PRAMIN nouveau [ VBIOS][0000:01:00.0] BIT signature found nouveau [ VBIOS][0000:01:00.0] version 80.07.c7.04.01 nouveau 0000:01:00.0: irq 39 for MSI/MSI-X nouveau [ PMC][0000:01:00.0] MSI interrupts enabled nouveau [ PFB][0000:01:00.0] RAM type: GDDR5 nouveau [ PFB][0000:01:00.0] RAM size: 2048 MiB nouveau [ PFB][0000:01:00.0] ZCOMP: 0 tags nouveau [ PTHERM][0000:01:00.0] FAN control: none / external nouveau [ PTHERM][0000:01:00.0] fan management: automatic nouveau [ PTHERM][0000:01:00.0] internal sensor: yes nouveau [ CLK][0000:01:00.0] 07: core 270-405 MHz memory 838 MHz nouveau [ CLK][0000:01:00.0] 0a: core 270-925 MHz memory 1560 MHz nouveau [ CLK][0000:01:00.0] 0e: core 270-925 MHz memory 4000 MHz nouveau [ CLK][0000:01:00.0] 0f: core 270-925 MHz memory 5016 MHz nouveau [ CLK][0000:01:00.0] --: core 405 MHz memory 680 MHz nouveau [ DRM] VRAM: 2048 MiB nouveau [ DRM] GART: 1048576 MiB nouveau [ DRM] TMDS table version 2.0 nouveau [ DRM] DCB version 4.0 nouveau [ DRM] DCB outp 00: 04810fb6 0f230010 nouveau [ DRM] DCB outp 01: 01821fd6 0f420020 nouveau [ DRM] DCB outp 02: 01021f12 00020020 nouveau [ DRM] DCB outp 03: 08832fc6 0f420010 nouveau [ DRM] DCB outp 04: 08032f02 00020010 nouveau [ DRM] DCB outp 05: 02843f62 00020010 nouveau [ DRM] DCB conn 00: 00020047 nouveau [ DRM] DCB conn 01: 02208146 nouveau [ DRM] DCB conn 02: 01104246 nouveau [ DRM] DCB conn 03: 00410361 nouveau [ DRM] MM: using COPY for buffer copies nouveau [ DRM] allocated 2880x1800 fb: 0x80000, bo ffff88046b26f800 -- Michael Marineau _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
