[Nouveau] nouveau 1.0.17 and GT-710 (GK208B): graphics stack freezes when turning off display
Ilia Mirkin
imirkin at alum.mit.edu
Mon Feb 8 22:32:29 UTC 2021
The referenced issue is a context switching error / timeout. Is that
what you're seeing?
Is there anything in dmesg when the problem occurs? Can you reproduce
it by forcing the monitor to sleep (xset s off or equivalent)?
What you're describing sounds most like a display engine hang. Cursor
position updates happen on another channel, so that makes sense it
keeps working. Usually when there's an error, we'll print what the
failing transition was. But sometimes that info isn't available, and
it just says "timeout" a lot on the core channel. In that case, we'll
have to enable more logging.
On Mon, Feb 8, 2021 at 4:58 PM Uwe Sauter <uwe.sauter.de at gmail.com> wrote:
>
> Hello,
>
> I don't know if this is the appropriate list to post; if not please point me in the right direction.
>
>
> I have an issue with the nouveau driver for a GT 710 (GK208B) card, hardware details and software versions below.
> Once the X server decides to switch into power saving mode and turns the display off using DPMS some part of the
> graphics stack seems to freeze. I can wake up the display and it will show me the last picture but most of the
> functionality is still frozen. I can move the mouse pointer but the clock applet won't show the current time and
> selecting desktop icons does not work.
> It seems that I can still start programs from the panel (I can see the process when remotely logging in) but they
> produce no graphics output.
>
> This happens in either of the two clock settings I can set in /sys/kernel/debug/dri/0/pstate .
>
>
> The proprietary driver does not show this behavior but seems to be much slower with glxgears, though this is not a
> proper benchmark, I know. The results between nouveau and nvidia are about the same when nouveau is in the low pstate
> but performance almost triples when the high pstate is configured.
>
> I bought this card just recently because it was said to be the last model that was properly usable without the
> proprietary driver.
>
> As you can see below, I'm already running xf86-video-nouveau 1.0.17 but compiling from git shouldn't be a problem if
> necessary.
>
> Currently the nvidia driver is in use but I should be able to quickly switch back to nouveau for any logs that might be
> required.
>
> Please advise what logs (and log levels) are needed in order to get to the bottom of this.
>
>
> This bug reports also describes what I see:
>
> https://gitlab.freedesktop.org/mesa/mesa/-/issues/1171#note_385608
>
>
>
>
> Regards,
>
> Uwe
>
>
>
> ### hardware ###
> CPU: AMD Ryzen 3 3100
> Mainboard: Gigabyte B550M S2H, Bios F13a with AMD AGESA ComboV2 1.2.0.0
> RAM: 2x 16GB Kingston DDR4 3200MHz ECC
> GPU: ASUS GT710-4H-SL-2GD5, 2GB GDDR5, 4x HDMI, VideoBIOS: 80.28.b8.00.05
> Display: ViewSonic VP2468
> ################
>
> ### software ###
> Arch Linux
> Kernel: 5.10.13-arch1-2
> linux-firmware: 20201218.646f159-1
> mate-desktop: 1.24.1-1
> Mesa: 20.3.4-1
> xorg-server: 1.20.10-3
> xf86-video-nouveau: 1.0.17-1
>
> alternatively:
> nvidia-dkms: 460.39-1
> #################
>
> ### lspci fpr GPU ###
> # lspci -s 3:0.0 -v | head -n 2
> #03:00.0 VGA compatible controller: NVIDIA Corporation GK208B [GeForce GT 710] (rev a1) (prog-if 00 [VGA controller])
> Subsystem: ASUSTeK Computer Inc. Device 8770
>
> # lspci -s 3:0.0 -vvn
> 03:00.0 0300: 10de:128b (rev a1) (prog-if 00 [VGA controller])
> Subsystem: 1043:8770
> 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
> Interrupt: pin A routed to IRQ 55
> IOMMU group: 12
> Region 0: Memory at fb000000 (32-bit, non-prefetchable) [size=16M]
> Region 1: Memory at fff0000000 (64-bit, prefetchable) [size=128M]
> Region 3: Memory at fff8000000 (64-bit, prefetchable) [size=32M]
> Region 5: I/O ports at f000 [size=128]
> Expansion ROM at fc000000 [virtual] [disabled] [size=512K]
> Capabilities: [60] Power Management version 3
> 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: 00000000fee00000 Data: 0000
> Capabilities: [78] Express (v2) Legacy Endpoint, MSI 00
> DevCap: MaxPayload 256 bytes, PhantFunc 0, Latency L0s unlimited, L1 <64us
> ExtTag+ AttnBtn- AttnInd- PwrInd- RBE+ FLReset-
> 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 #6, Speed 5GT/s, Width x8, ASPM L0s L1, Exit Latency L0s <512ns, L1 <4us
> ClockPM+ Surprise- LLActRep- BwNot- ASPMOptComp+
> LnkCtl: ASPM L1 Enabled; RCB 64 bytes, Disabled- CommClk+
> ExtSynch- ClockPM+ AutWidDis- BWInt- AutBWInt-
> LnkSta: Speed 2.5GT/s (downgraded), Width x1 (downgraded)
> TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
> DevCap2: Completion Timeout: Range AB, TimeoutDis+ NROPrPrP- LTR-
> 10BitTagComp- 10BitTagReq- OBFF Not Supported, ExtFmt- EETLPPrefix-
> EmergencyPowerReduction Not Supported, EmergencyPowerReductionInit-
> FRS-
> AtomicOpsCap: 32bit- 64bit- 128bitCAS-
> DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis- LTR- OBFF Disabled,
> AtomicOpsCtl: ReqEn-
> LnkCap2: Supported Link Speeds: 2.5-5GT/s, Crosslink- Retimer- 2Retimers- DRS-
> LnkCtl2: Target Link Speed: 5GT/s, EnterCompliance- SpeedDis-
> Transmit Margin: Normal Operating Range, EnterModifiedCompliance- ComplianceSOS-
> Compliance De-emphasis: -6dB
> LnkSta2: Current De-emphasis Level: -6dB, EqualizationComplete+ EqualizationPhase1+
> EqualizationPhase2+ EqualizationPhase3+ LinkEqualizationRequest-
> Retimer- 2Retimers- CrosslinkRes: unsupported
> 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: nvidia
> Kernel modules: nouveau, nvidia_drm, nvidia
> ######################
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