nouveau regression post v5.8, still present in v5.10

From: Jamie Heilman
Date: Fri Dec 25 2020 - 02:42:25 EST

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Something between v5.8 and v5.9 has resulted in periodically losing video.
Unfortunately, I can't reliably reproduce it, it seems to happen every
once in a long while---I can go weeks without an occurance, but it
always seems to happen after my workstation has been idle long enough
to screen blank and put the monitor to sleep. I'm using a single
display (Dell 2405FPW) connected via DVI, running X (Xorg 1.20.x from
Debian sid). I don't really do anything fancy, xterms, a browser or
two, play the occasional video, but like I said, I can't reliably
reproduce this. I've had it happen about 11 times since August.

lspci -vv output is:

01:00.0 VGA compatible controller: NVIDIA Corporation G86 [Quadro NVS 290] (rev a1) (prog-if 00 [VGA controller])
Subsystem: NVIDIA Corporation G86 [Quadro NVS 290]
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 28
Region 0: Memory at fc000000 (32-bit, non-prefetchable) [size=16M]
Region 1: Memory at d0000000 (64-bit, prefetchable) [size=256M]
Region 3: Memory at fa000000 (64-bit, non-prefetchable) [size=32M]
Region 5: I/O ports at dc80 [size=128]
Expansion ROM at 000c0000 [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: 00000000fee01004 Data: 4023
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 25.000W
DevCtl: CorrErr- NonFatalErr+ FatalErr+ UnsupReq-
RlxdOrd+ ExtTag+ PhantFunc- AuxPwr- NoSnoop+
MaxPayload 128 bytes, MaxReadReq 512 bytes
DevSta: CorrErr- NonFatalErr- FatalErr- UnsupReq- 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 64 bytes, Disabled- CommClk+
ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
LnkSta: Speed 2.5GT/s (ok), Width x16 (ok)
TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
Capabilities: [100 v1] Virtual Channel
Caps: LPEVC=0 RefClk=100ns PATEntryBits=1
Arb: Fixed- WRR32- WRR64- WRR128-
Ctrl: ArbSelect=Fixed
Status: InProgress-
VC0: Caps: PATOffset=00 MaxTimeSlots=1 RejSnoopTrans-
Arb: Fixed- WRR32- WRR64- WRR128- TWRR128- WRR256-
Ctrl: Enable+ ID=0 ArbSelect=Fixed TC/VC=01
Status: NegoPending- InProgress-
Capabilities: [128 v1] Power Budgeting <?>
Capabilities: [600 v1] Vendor Specific Information: ID=0001 Rev=1 Len=024 <?>
Kernel driver in use: nouveau

The last time this happened, this is what got logged:

nouveau 0000:01:00.0: disp: ERROR 5 [INVALID_STATE] 06 [] chid 1 mthd 0080 data 00000001
nouveau 0000:01:00.0: disp: Base 1:
nouveau 0000:01:00.0: disp: 0084: 00000000
nouveau 0000:01:00.0: disp: 0088: 00000000
nouveau 0000:01:00.0: disp: 008c: 00000000
nouveau 0000:01:00.0: disp: 0090: 00000000
nouveau 0000:01:00.0: disp: 0094: 00000000
nouveau 0000:01:00.0: disp: 00a0: 00000060 -> 00000070
nouveau 0000:01:00.0: disp: 00a4: 00000000 -> f0000000
nouveau 0000:01:00.0: disp: 00c0: 00000000
nouveau 0000:01:00.0: disp: 00c4: 00000000
nouveau 0000:01:00.0: disp: 00c8: 00000000
nouveau 0000:01:00.0: disp: 00cc: 00000000
nouveau 0000:01:00.0: disp: 00e0: 40000000
nouveau 0000:01:00.0: disp: 00e4: 00000000
nouveau 0000:01:00.0: disp: 00e8: 00000000
nouveau 0000:01:00.0: disp: 00ec: 00000000
nouveau 0000:01:00.0: disp: 00fc: 00000000
nouveau 0000:01:00.0: disp: 0100: fffe0000
nouveau 0000:01:00.0: disp: 0104: 00000000
nouveau 0000:01:00.0: disp: 0110: 00000000
nouveau 0000:01:00.0: disp: 0114: 00000000
nouveau 0000:01:00.0: disp: Base 1 - Image 0:
nouveau 0000:01:00.0: disp: 0800: 00009500
nouveau 0000:01:00.0: disp: 0804: 00000000
nouveau 0000:01:00.0: disp: 0808: 04b00780
nouveau 0000:01:00.0: disp: 080c: 00007804
nouveau 0000:01:00.0: disp: 0810: 0000cf00
nouveau 0000:01:00.0: disp: Base 1 - Image 1:
nouveau 0000:01:00.0: disp: 0c00: 00009500
nouveau 0000:01:00.0: disp: 0c04: 00000000
nouveau 0000:01:00.0: disp: 0c08: 04b00780
nouveau 0000:01:00.0: disp: 0c0c: 00007804
nouveau 0000:01:00.0: disp: 0c10: 0000cf00
nouveau 0000:01:00.0: disp: ERROR 5 [INVALID_STATE] 06 [] chid 1 mthd 0080 data 00000001
nouveau 0000:01:00.0: disp: Base 1:
nouveau 0000:01:00.0: disp: 0084: 00000000
nouveau 0000:01:00.0: disp: 0088: 00000000
nouveau 0000:01:00.0: disp: 008c: 00000000
nouveau 0000:01:00.0: disp: 0090: 00000000
nouveau 0000:01:00.0: disp: 0094: 00000000
nouveau 0000:01:00.0: disp: 00a0: 00000060 -> 00000070
nouveau 0000:01:00.0: disp: 00a4: 00000000 -> f0000000
nouveau 0000:01:00.0: disp: 00c0: 00000000
nouveau 0000:01:00.0: disp: 00c4: 00000000
nouveau 0000:01:00.0: disp: 00c8: 00000000
nouveau 0000:01:00.0: disp: 00cc: 00000000
nouveau 0000:01:00.0: disp: 00e0: 40000000
nouveau 0000:01:00.0: disp: 00e4: 00000000
nouveau 0000:01:00.0: disp: 00e8: 00000000
nouveau 0000:01:00.0: disp: 00ec: 00000000
nouveau 0000:01:00.0: disp: 00fc: 00000000
nouveau 0000:01:00.0: disp: 0100: fffe0000
nouveau 0000:01:00.0: disp: 0104: 00000000
nouveau 0000:01:00.0: disp: 0110: 00000000
nouveau 0000:01:00.0: disp: 0114: 00000000
nouveau 0000:01:00.0: disp: Base 1 - Image 0:
nouveau 0000:01:00.0: disp: 0800: 00009500
nouveau 0000:01:00.0: disp: 0804: 00000000
nouveau 0000:01:00.0: disp: 0808: 04b00780
nouveau 0000:01:00.0: disp: 080c: 00007804
nouveau 0000:01:00.0: disp: 0810: 0000cf00
nouveau 0000:01:00.0: disp: Base 1 - Image 1:
nouveau 0000:01:00.0: disp: 0c00: 00009500
nouveau 0000:01:00.0: disp: 0c04: 00000000
nouveau 0000:01:00.0: disp: 0c08: 04b00780
nouveau 0000:01:00.0: disp: 0c0c: 00007804
nouveau 0000:01:00.0: disp: 0c10: 0000cf00
nouveau 0000:01:00.0: DRM: core notifier timeout
nouveau 0000:01:00.0: DRM: base-0: timeout

I've got logs of all of this, if they help I can collect them. The
timeout message are consistent the error messages a little less so.

If there's more debugging I can do when this happens, I'd love to know
what it is.

kernel config: http://audible.transient.net/~jamie/k/nouveau.config-5.10.0
dmesg at boot: http://audible.transient.net/~jamie/k/nouveau.dmesg

--
Jamie Heilman http://audible.transient.net/~jamie/

Next message: Chunfeng Yun: "[PATCH v5 11/11] MAINTAINERS: update MediaTek PHY/USB entry"
Previous message: Freddy Hsin: "[PATCH v1 1/1] driver: watchdog: Remove mtk_wdt_stop() in probe() to prevent the system freeze and it doesn't reboot by watchdog problem"
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