messages

bad (ckt11) (i915 is locked and initialized before nouveau)
# grep "Jun 15 08:37:34" messages  |egrep "i915|nouveau|apple_gmux"
Jun 15 08:37:34 debian kernel: [ 14.519345] apple_gmux: Found gmux version 3.2.19 [indexed] Jun 15 08:37:34 debian kernel: [ 14.522593] apple_gmux: locked IO for PCI:0000:00:02.0 Jun 15 08:37:34 debian kernel: [ 15.076101] i915 0000:00:02.0: BAR 6: can't assign [??? 0x00000000 flags 0x20000000] (bogus alignment) Jun 15 08:37:34 debian kernel: [ 15.198516] [drm] GMBUS [i915 gmbus vga] timed out, falling back to bit banging on pin 2 Jun 15 08:37:34 debian kernel: [ 15.214717] i915 0000:00:02.0: No connectors reported connected with modes Jun 15 08:37:34 debian kernel: [ 15.220687] i915 0000:00:02.0: fb1: inteldrmfb frame buffer device Jun 15 08:37:34 debian kernel: [ 15.223462] i915 0000:00:02.0: registered panic notifier Jun 15 08:37:34 debian kernel: [ 15.270493] [drm] Initialized i915 1.6.0 20080730 for 0000:00:02.0 on minor 0 Jun 15 08:37:34 debian kernel: [ 15.297092] fb: switching to nouveaufb from simple Jun 15 08:37:34 debian kernel: [ 15.300092] nouveau 0000:01:00.0: enabling device (0006 -> 0007) Jun 15 08:37:34 debian kernel: [ 15.300222] nouveau [ DEVICE][0000:01:00.0] BOOT0 : 0x0e7150a2 Jun 15 08:37:34 debian kernel: [ 15.300224] nouveau [ DEVICE][0000:01:00.0] Chipset: GK107 (NVE7) Jun 15 08:37:34 debian kernel: [ 15.300226] nouveau [ DEVICE][0000:01:00.0] Family : NVE0 Jun 15 08:37:34 debian kernel: [ 15.300243] nouveau [ VBIOS][0000:01:00.0] checking PRAMIN for image... Jun 15 08:37:34 debian kernel: [ 16.009652] nouveau [ VBIOS][0000:01:00.0] ... appears to be valid Jun 15 08:37:34 debian kernel: [ 16.009656] nouveau [ VBIOS][0000:01:00.0] using image from PRAMIN Jun 15 08:37:34 debian kernel: [ 16.009756] nouveau [ VBIOS][0000:01:00.0] BIT signature found Jun 15 08:37:34 debian kernel: [ 16.009758] nouveau [ VBIOS][0000:01:00.0] version 80.07.26.04.01 Jun 15 08:37:34 debian kernel: [ 16.010341] nouveau [ PMC][0000:01:00.0] MSI interrupts enabled Jun 15 08:37:34 debian kernel: [ 16.010385] nouveau [ PFB][0000:01:00.0] RAM type: GDDR5 Jun 15 08:37:34 debian kernel: [ 16.010386] nouveau [ PFB][0000:01:00.0] RAM size: 1024 MiB Jun 15 08:37:34 debian kernel: [ 16.010388] nouveau [ PFB][0000:01:00.0] ZCOMP: 0 tags Jun 15 08:37:34 debian kernel: [ 16.044954] nouveau [ PTHERM][0000:01:00.0] FAN control: none / external Jun 15 08:37:34 debian kernel: [ 16.044970] nouveau [ PTHERM][0000:01:00.0] fan management: automatic Jun 15 08:37:34 debian kernel: [ 16.044980] nouveau [ PTHERM][0000:01:00.0] internal sensor: yes Jun 15 08:37:34 debian kernel: [ 16.045015] nouveau [ CLK][0000:01:00.0] 07: core 270-405 MHz memory 838 MHz Jun 15 08:37:34 debian kernel: [ 16.045059] nouveau [ CLK][0000:01:00.0] 0a: core 270-900 MHz memory 1560 MHz Jun 15 08:37:34 debian kernel: [ 16.045092] nouveau [ CLK][0000:01:00.0] 0e: core 270-900 MHz memory 4000 MHz Jun 15 08:37:34 debian kernel: [ 16.045115] nouveau [ CLK][0000:01:00.0] 0f: core 270-900 MHz memory 5016 MHz Jun 15 08:37:34 debian kernel: [ 16.045258] nouveau [ CLK][0000:01:00.0] --: core 405 MHz memory 680 MHz Jun 15 08:37:34 debian kernel: [ 16.069302] nouveau [ DRM] VRAM: 1024 MiB Jun 15 08:37:34 debian kernel: [ 16.069304] nouveau [ DRM] GART: 1048576 MiB Jun 15 08:37:34 debian kernel: [ 16.069307] nouveau [ DRM] TMDS table version 2.0 Jun 15 08:37:34 debian kernel: [ 16.069308] nouveau [ DRM] DCB version 4.0 Jun 15 08:37:34 debian kernel: [ 16.069310] nouveau [ DRM] DCB outp 00: 048101b6 0f230010 Jun 15 08:37:34 debian kernel: [ 16.069312] nouveau [ DRM] DCB outp 01: 018212d6 0f220020 Jun 15 08:37:34 debian kernel: [ 16.069314] nouveau [ DRM] DCB outp 02: 01021212 00020020 Jun 15 08:37:34 debian kernel: [ 16.069315] nouveau [ DRM] DCB outp 03: 088324c6 0f220010 Jun 15 08:37:34 debian kernel: [ 16.069317] nouveau [ DRM] DCB outp 04: 08032402 00020010 Jun 15 08:37:34 debian kernel: [ 16.069318] nouveau [ DRM] DCB outp 05: 02843862 00020010 Jun 15 08:37:34 debian kernel: [ 16.069319] nouveau [ DRM] DCB conn 00: 00020047 Jun 15 08:37:34 debian kernel: [ 16.069321] nouveau [ DRM] DCB conn 01: 02208146 Jun 15 08:37:34 debian kernel: [ 16.069323] nouveau [ DRM] DCB conn 02: 01104246 Jun 15 08:37:34 debian kernel: [ 16.069324] nouveau [ DRM] DCB conn 03: 00410361 Jun 15 08:37:34 debian kernel: [ 16.082269] nouveau [ DRM] MM: using COPY for buffer copies Jun 15 08:37:34 debian kernel: [ 16.366213] nouveau [ DRM] allocated 2880x1800 fb: 0x80000, bo ffff88045a67c000 Jun 15 08:37:34 debian kernel: [ 16.366312] fbcon: nouveaufb (fb0) is primary device Jun 15 08:37:34 debian kernel: [ 17.002643] nouveau 0000:01:00.0: fb0: nouveaufb frame buffer device Jun 15 08:37:34 debian kernel: [ 17.002658] [drm] Initialized nouveau 1.1.2 20120801 for 0000:01:00.0 on minor 1

good (after downgrade to ckt9)
# grep "Jun 15 08:41" messages  |egrep "i915|nouveau|apple_gmux"
Jun 15 08:41:13 debian kernel: [ 12.189075] apple_gmux: Found gmux version 3.2.19 [indexed] Jun 15 08:41:13 debian kernel: [ 12.889994] fb: switching to nouveaufb from simple Jun 15 08:41:13 debian kernel: [ 12.895387] nouveau 0000:01:00.0: enabling device (0006 -> 0007) Jun 15 08:41:13 debian kernel: [ 12.896390] nouveau [ DEVICE][0000:01:00.0] BOOT0 : 0x0e7150a2 Jun 15 08:41:13 debian kernel: [ 12.896429] nouveau [ DEVICE][0000:01:00.0] Chipset: GK107 (NVE7) Jun 15 08:41:13 debian kernel: [ 12.896432] nouveau [ DEVICE][0000:01:00.0] Family : NVE0 Jun 15 08:41:13 debian kernel: [ 12.896497] nouveau [ VBIOS][0000:01:00.0] checking PRAMIN for image... Jun 15 08:41:13 debian kernel: [ 13.438622] nouveau [ VBIOS][0000:01:00.0] ... appears to be valid Jun 15 08:41:13 debian kernel: [ 13.438625] nouveau [ VBIOS][0000:01:00.0] using image from PRAMIN Jun 15 08:41:13 debian kernel: [ 13.438725] nouveau [ VBIOS][0000:01:00.0] BIT signature found Jun 15 08:41:13 debian kernel: [ 13.438728] nouveau [ VBIOS][0000:01:00.0] version 80.07.26.04.01 Jun 15 08:41:13 debian kernel: [ 13.439291] nouveau [ PMC][0000:01:00.0] MSI interrupts enabled Jun 15 08:41:13 debian kernel: [ 13.439335] nouveau [ PFB][0000:01:00.0] RAM type: GDDR5 Jun 15 08:41:13 debian kernel: [ 13.439337] nouveau [ PFB][0000:01:00.0] RAM size: 1024 MiB Jun 15 08:41:13 debian kernel: [ 13.439338] nouveau [ PFB][0000:01:00.0] ZCOMP: 0 tags Jun 15 08:41:13 debian kernel: [ 13.474039] nouveau [ PTHERM][0000:01:00.0] FAN control: none / external Jun 15 08:41:13 debian kernel: [ 13.474055] nouveau [ PTHERM][0000:01:00.0] fan management: automatic Jun 15 08:41:13 debian kernel: [ 13.474066] nouveau [ PTHERM][0000:01:00.0] internal sensor: yes Jun 15 08:41:13 debian kernel: [ 13.474100] nouveau [ CLK][0000:01:00.0] 07: core 270-405 MHz memory 838 MHz Jun 15 08:41:13 debian kernel: [ 13.474147] nouveau [ CLK][0000:01:00.0] 0a: core 270-900 MHz memory 1560 MHz Jun 15 08:41:13 debian kernel: [ 13.474182] nouveau [ CLK][0000:01:00.0] 0e: core 270-900 MHz memory 4000 MHz Jun 15 08:41:13 debian kernel: [ 13.474207] nouveau [ CLK][0000:01:00.0] 0f: core 270-900 MHz memory 5016 MHz Jun 15 08:41:13 debian kernel: [ 13.474351] nouveau [ CLK][0000:01:00.0] --: core 405 MHz memory 680 MHz Jun 15 08:41:13 debian kernel: [ 13.498814] nouveau [ DRM] VRAM: 1024 MiB Jun 15 08:41:13 debian kernel: [ 13.498815] nouveau [ DRM] GART: 1048576 MiB Jun 15 08:41:13 debian kernel: [ 13.498819] nouveau [ DRM] TMDS table version 2.0 Jun 15 08:41:13 debian kernel: [ 13.498820] nouveau [ DRM] DCB version 4.0 Jun 15 08:41:13 debian kernel: [ 13.498822] nouveau [ DRM] DCB outp 00: 048101b6 0f230010 Jun 15 08:41:13 debian kernel: [ 13.498824] nouveau [ DRM] DCB outp 01: 018212d6 0f220020 Jun 15 08:41:13 debian kernel: [ 13.498825] nouveau [ DRM] DCB outp 02: 01021212 00020020 Jun 15 08:41:13 debian kernel: [ 13.498827] nouveau [ DRM] DCB outp 03: 088324c6 0f220010 Jun 15 08:41:13 debian kernel: [ 13.498828] nouveau [ DRM] DCB outp 04: 08032402 00020010 Jun 15 08:41:13 debian kernel: [ 13.498830] nouveau [ DRM] DCB outp 05: 02843862 00020010 Jun 15 08:41:13 debian kernel: [ 13.498831] nouveau [ DRM] DCB conn 00: 00020047 Jun 15 08:41:13 debian kernel: [ 13.498833] nouveau [ DRM] DCB conn 01: 02208146 Jun 15 08:41:13 debian kernel: [ 13.498835] nouveau [ DRM] DCB conn 02: 01104246 Jun 15 08:41:13 debian kernel: [ 13.498836] nouveau [ DRM] DCB conn 03: 00410361 Jun 15 08:41:13 debian kernel: [ 13.511694] nouveau [ DRM] MM: using COPY for buffer copies Jun 15 08:41:13 debian kernel: [ 13.790392] nouveau [ DRM] allocated 2880x1800 fb: 0x80000, bo ffff88045dace400 Jun 15 08:41:13 debian kernel: [ 13.790450] fbcon: nouveaufb (fb0) is primary device Jun 15 08:41:13 debian kernel: [ 14.427684] nouveau 0000:01:00.0: fb0: nouveaufb frame buffer device Jun 15 08:41:13 debian kernel: [ 14.427686] nouveau 0000:01:00.0: registered panic notifier Jun 15 08:41:13 debian kernel: [ 14.438341] [drm] Initialized nouveau 1.1.2 20120801 for 0000:01:00.0 on minor 0 Jun 15 08:41:13 debian kernel: [ 14.502532] i915 0000:00:02.0: BAR 6: can't assign [??? 0x00000000 flags 0x20000000] (bogus alignment) Jun 15 08:41:13 debian kernel: [ 14.610452] [drm] GMBUS [i915 gmbus vga] timed out, falling back to bit banging on pin 2 Jun 15 08:41:13 debian kernel: [ 14.626487] i915 0000:00:02.0: No connectors reported connected with modes Jun 15 08:41:13 debian kernel: [ 14.626882] i915 0000:00:02.0: fb1: inteldrmfb frame buffer device Jun 15 08:41:13 debian kernel: [ 14.644454] [drm] Initialized i915 1.6.0 20080730 for 0000:00:02.0 on minor 1

maybe related to:
https://bugzilla.kernel.org/show_bug.cgi?id=84461


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