Created attachment 135696 [details] dmesg output Tried a GeForce 8400 GS as 2nd card in my PowerMac G5 11,2 but I only get a blank screen although it seems to successfully open fb1: [ 14.407485] [drm] Initialized nouveau 1.3.1 20120801 for 0001:06:00.0 on minor 1 [ 14.477817] nouveau: DRM:fb000000:0000003d: init running... [ 14.478206] nouveau: DRM:fb000000:0000003d: init children... [ 14.478582] nouveau: DRM:fb000000:0000003d: init completed in 376us [ 14.480128] nouveau 0001:06:00.0: disp: ERROR 1 [] 01 [] chid 1 mthd 0000 data 00000000 # lspci -vv -s 0001:06:00.0 0001:06:00.0 VGA compatible controller: NVIDIA Corporation G86 [GeForce 8400 GS] (rev a1) (prog-if 00 [VGA controller]) Subsystem: Micro-Star International Co., Ltd. [MSI] G86 [GeForce 8400 GS] Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0, Cache Line Size: 64 bytes Interrupt: pin A routed to IRQ 65 Region 0: Memory at 81000000 (32-bit, non-prefetchable) [size=16M] Region 1: Memory at 90000000 (64-bit, prefetchable) [size=256M] Region 3: Memory at 82000000 (64-bit, non-prefetchable) [size=32M] Region 5: I/O ports at 0000 [size=128] Expansion ROM at 80100000 [disabled] [size=128K] Capabilities: [60] Power Management version 2 Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-) Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME- Capabilities: [68] MSI: Enable- Count=1/1 Maskable- 64bit+ Address: 0000000000000000 Data: 0000 Capabilities: [78] Express (v1) Endpoint, MSI 00 DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s <512ns, L1 <4us ExtTag+ AttnBtn- AttnInd- PwrInd- RBE+ FLReset- SlotPowerLimit 0.000W DevCtl: Report errors: Correctable- Non-Fatal- Fatal- Unsupported- RlxdOrd+ ExtTag+ PhantFunc- AuxPwr- NoSnoop+ MaxPayload 128 bytes, MaxReadReq 512 bytes DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr- TransPend- LnkCap: Port #0, Speed 2.5GT/s, Width x16, ASPM L0s L1, Exit Latency L0s <512ns, L1 <4us ClockPM- Surprise- LLActRep- BwNot- ASPMOptComp- LnkCtl: ASPM Disabled; RCB 128 bytes Disabled- CommClk- ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt- LnkSta: Speed 2.5GT/s, Width x8, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt- Kernel driver in use: nouveau Kernel modules: nouveau
Created attachment 135697 [details] kernel .config
Just tried 4.15-rc2. No change concerning the bug, but a bit more debug info.
Created attachment 136011 [details] dmesg output
Oops, forgot to connect the monitor the time I tested this card... Now it initializes, I can start X but the monitor gets 'No Signal.'
Created attachment 136018 [details] journalctl -b output with nouveau.debug=trace (kernel 4.15-rc2)
Created attachment 136019 [details] Xorg.log
Created attachment 141806 [details] dmesg output (kernel 4.19-rc5, nouveau.debug=debug log_buf_len=2M) Some new debug info with kernel 4.19-rc5: [ 254.219918] nouveau 0001:06:00.0: fifo: DMA_PUSHER - ch 2 [X[285]] get fffffffffc put 0000fffff8 ib_get 00000095 ib_put 00000096 state c0040026 (err: MEM_FAULT) push 00406040 [ 254.219940] nouveau 0001:06:00.0: fb: trapped read at fffffffffc on channel 2 [07aa0000 X[285]] engine 05 [PFIFO] client 08 [PFIFO_READ] subclient 00 [PUSHBUF] reason 00000000 [PT_NOT_PRESENT]
Created attachment 141807 [details] Xorg.0.log
Created attachment 141808 [details] kernel .config (4.19-rc5)
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