Cannot read file, error code 1 (5 times in 2 days)



  • Here I am again with more problems. I have recently been printing a lot of similar parts and it got super bad and annoying to the point that I am coming here to ask whether I again purchased a defective board. Every 4th part I print returns this error in mid print and makes the whole printing a nightmare. $20 boards never have this problem, this is nearly $200. Is it defective again? I am on my second board already. Needless to say wasted time and material is very valuable and it is not fun at all. Thanks god I am printing 30minute prints and not 5 hours prints where it would be guaranteed to fail.

    What is the solution? (I can't resolver a good quality card reader myself apparently, I expected that be done by manufacturer)


  • administrators

    Have you tried a different SD card?



  • Of course I had David. As well as million other options such as formatting with different cluster size etc. You know yourself that it is a faulty reader probably. I tried 6 different high quality cards with same result, and only on your board. It was not as bad until I started doing serious printing and it destroys every other print now with lost time and material.

    I even tried to reduce resolution of mesh on model, which I shouldn't have to do, but it didn't help anyways.


  • administrators

    It's certainly possible that a faulty SD card socket is causing that message, although that would be unusual. I can discuss the possibility of an exchange with my colleagues if you have tried everything else. In particular:

    1. Please confirm that the SD card is plugged directly into the micro SD card socket, and that you are not using and never have used any kind of SD socket extender.

    2. Please confirm the version of RepRapFirmware that you are using. More recent versions retry the transaction following an SD card error.

    3. Please confirm what types/brands of SD card you have tried. The only other time I recall seeing this problem was when a customer was running 6 printers continuously, and reported that every few days one of them would report failure to read the SD card. The customer changed to using Class 10 Micron SD cards and the problem went away.

    4. Please check that you don't have any stepper motor cables running directly over the SD card socket or very close to that area of the Duet.



  • @dc42 ok, i will check these and report back shortly! thanks!



  • @dc42

    1. yes
    2. https://www.amazon.com/dp/B06XYT37NK/ Sandisk Extreme Pro, Class 10, U3. This is the fastest card on a market, and any card can handle this pretty much. This card is roughly 100x faster than even needed for this task.
    3. I only use Sandisk brand, and I tried 4 different card models. All these cards work flawlessly with everything supporting extremely high data transfer rates.
    4. stepper cables are as far as they can possible be from that location.
    5. File system: FAT32, Cluster 64KB (also tried 32 and 4). Tried cards capacities: 16GB, 32GB, 64GB.
    6. Also if such problem exists, I don't understand why the printer completely fails/stops/cancels print after this error instead of simply retrying to read the same line for numerous times. Wouldn't it make more sense and at least reduce a trouble?
    7. Worth noting that it almost always stops at small sections with a lot of commands per second (small cylinders), seems as CPU is struggling to read larger amounts of lines, which never happened even on 8 bit boards with me they would throttle there instead, but never failed like this. Printer is Cartesian - the lightest geometry in terms of calculation power requirement. Pressure advance is on. microstepping is 32.

    6/23/2019, 1:37:14 PM: Connected to 192.168.1.145
    6/23/2019, 1:37:32 PM: Emergency stop, attempting to reconnect...
    6/23/2019, 1:37:43 PM: Connection established
    6/23/2019, 1:39:19 PM: M122: === Diagnostics ===
    RepRapFirmware for Duet 2 WiFi/Ethernet version 2.02(RTOS) running on Duet WiFi 1.02 or later
    Board ID: 08DGM-917DA-G4MS8-6JKD0-3S86J-K9SBA
    Used output buffers: 3 of 20 (16 max)
    === RTOS ===
    Static ram: 25524
    Dynamic ram: 98588 of which 0 recycled
    Exception stack ram used: 376
    Never used ram: 6584
    Tasks: NETWORK(ready,648) HEAT(blocked,1232) MAIN(running,3780) IDLE(ready,200)
    Owned mutexes:
    === Platform ===
    Last reset 00:01:44 ago, cause: software
    Last software reset at 2019-06-23 13:37, reason: User, spinning module GCodes, available RAM 6568 bytes (slot 3)
    Software reset code 0x0003 HFSR 0x00000000 CFSR 0x00000000 ICSR 0x0041f000 BFAR 0xe000ed38 SP 0xffffffff Task 0x4e49414d
    Error status: 0
    Free file entries: 10
    SD card 0 detected, interface speed: 20.0MBytes/sec
    SD card longest block write time: 0.0ms, max retries 0
    MCU temperature: min 32.0, current 34.2, max 34.5
    Supply voltage: min 23.8, current 24.0, max 24.3, under voltage events: 0, over voltage events: 0, power good: yes
    Driver 0: standstill, SG min/max 0/121
    Driver 1: standstill, SG min/max 0/9
    Driver 2: standstill, SG min/max 0/526
    Driver 3: standstill, SG min/max not available
    Driver 4: standstill, SG min/max not available
    Date/time: 2019-06-23 13:39:18
    Cache data hit count 382935555
    Slowest loop: 7.91ms; fastest: 0.07ms
    I2C nak errors 0, send timeouts 0, receive timeouts 0, finishTimeouts 0
    === Move ===
    Hiccups: 0, StepErrors: 0, LaErrors: 0, FreeDm: 240, MinFreeDm: 238, MaxWait: 21138ms, Underruns: 0, 0
    Scheduled moves: 9, completed moves: 9
    Bed compensation in use: none
    Bed probe heights: 0.000 0.000 0.000 0.000 0.000
    === Heat ===
    Bed heaters = 0 -1 -1 -1, chamberHeaters = -1 -1
    Heater 0 is on, I-accum = 0.0
    Heater 1 is on, I-accum = 0.0
    === GCodes ===
    Segments left: 0
    Stack records: 1 allocated, 0 in use
    Movement lock held by null
    http is idle in state(s) 0
    telnet is idle in state(s) 0
    file is idle in state(s) 0
    serial is idle in state(s) 0
    aux is idle in state(s) 0
    daemon is idle in state(s) 0
    queue is idle in state(s) 0
    autopause is idle in state(s) 0
    Code queue is empty.
    === Network ===
    Slowest loop: 22.74ms; fastest: 0.00ms
    Responder states: HTTP(0) HTTP(0) HTTP(0) HTTP(0) FTP(0) Telnet(0) Telnet(0)
    HTTP sessions: 1 of 8

    • WiFi -
      Network state is running
      WiFi module is connected to access point
      Failed messages: pending 0, notready 0, noresp 0
      WiFi firmware version 1.22
      WiFi MAC address *
      WiFi Vcc 3.42, reset reason Turned on by main processor
      WiFi flash size 4194304, free heap 29000
      WiFi IP address *
      WiFi signal strength -58dBm, reconnections 0, sleep mode modem
      Socket states: 0 0 0 0 0 0 0 0


  • @dc42 I also tried to move AC cable a bit further from that location, not sure if this can even affect this, but so far I had 4 prints without a failure. Gonna keep printing now.

    No, stopped again.... Super annoying. Didn't expect the most expensive board on a market will lead me only to extra wasted time and material... Especially in the most important time when I need my printer.


  • administrators

    Hi Vlad,

    Thanks for your report. It's an unusual fault.

    Please update the firmware to 2.03, because it may make a difference.

    When an SD card transaction fails, RRF currently makes up to 2 more attempts before giving up. I can increase that number if you like. I can also try inserting a delay between attempts, because when our OEM encountered this issue last year, it seemed that the SD card had gone to sleep (perhaps doing wear levelling) and needed time to recover.

    The M122 report includes the maximum number of SD card retries done since power up or since you last ran M122. In your report above:

    SD card longest block write time: 0.0ms, max retries 0

    If you still encounter that problem when you use firmware 2.03, then I'm happy to authorise a warranty replacement for that board, even though I doubt that it is caused by a hardware fault on the Duet.



  • @vlad said in Cannot read file, error code 1 (5 times in 2 days):

    I only use Sandisk brand, and I tried 4 different card models. All these cards work flawlessly with everything supporting extremely high data transfer rates.

    have you tried the sd card that came with the duet?


  • administrators

    SanDisk should be fine, that's mostly what I use.



  • @dc42 David, warranty replacement is also an inconvenience, as I will have to drive for one hour to your distributor here and replace the whole board inside. This involves a lot of time and also extra expense.

    If you doubt that this is hardware fault, then what is the point of replacement, let's then fix it somehow.

    So far it has been working on 2.03 firmware since yesterday with 75% success rate on prints, meaning the error is still there. And that is 30 minute prints, if I start something longer that success rate could drop drastically. As I said, what I noticed is that it would almost always stop in most "data dense" section of the print. my pressure advance is 0.03 and speeds are quite fast, do you think the CPU may be overloaded by this?

    I remember having this same fault on this board the very first day I installed it, but then it never happened again for a long time. During all this time nothing was changed on this printer hardware wise, at all.

    I am more than willing to run more troubleshooting attempts within firmware if you really think that can resolve the issue for good.


  • administrators

    Two other possibilities occur to me:

    1. It could be a power issue. Next time this problem occurs, run M122 before you do reset or power down the printer, and post the result here. It must be the result from the first time you run M122 after the problem occurs.

    2. Do you have the USB port connected to a PC? If so then the problem might be caused by ground transients. See https://duet3d.dozuki.com/Wiki/USB_ground_loops.



  • @dc42 Hi David,

    1. I will try M122 today.
    2. I am familiar with ground loops and no, I don't.


  • @dc42 Also, if it helps, I always use the button "print another" as I am printing 200pcs. Maybe it has something to do with that.

    Here is M122:

    6/26/2019, 7:16:37 PM: Connected to 192.168.1.145
    6/26/2019, 7:19:06 PM: Upload of B-V1.0.gcode successful after 2s
    6/26/2019, 7:19:06 PM: M32 "0:/gcodes/B-V1.0.gcode": File 0:/gcodes/B-V1.0.gcode selected for printing
    6/26/2019, 7:19:33 PM: : Warning: M73 command is not supported
    6/26/2019, 7:21:05 PM: M566 X600 Y600 Z8 E150
    6/26/2019, 7:48:08 PM: : Finished printing file 0:/gcodes/B-V1.0.gcode, print time was 0h 29m
    6/26/2019, 7:56:43 PM: M32 "0:/gcodes/B-V1.0.gcode": File 0:/gcodes/NV-Box-V1.0.gcode selected for printing
    6/26/2019, 7:58:01 PM: : Warning: M73 command is not supported
    6/26/2019, 8:26:37 PM: : Finished printing file 0:/gcodes/NV-Box-V1.0.gcode, print time was 0h 30m
    6/26/2019, 8:29:48 PM: M32 "0:/gcodes/B-V1.0.gcode": File 0:/gcodes/B-V1.0.gcode selected for printing
    6/26/2019, 8:30:45 PM: : Warning: M73 command is not supported
    6/26/2019, 8:31:51 PM: M566 X400 Y400 Z8 E150
    6/26/2019, 8:45:16 PM: : Error: Cannot read file, error code 1
    Cancelled printing file 0:/gcodes/B-V1.0.gcode, print time was 0h 15m
    6/26/2019, 8:48:41 PM: M120
    6/26/2019, 8:49:00 PM: M122: === Diagnostics ===
    RepRapFirmware for Duet 2 WiFi/Ethernet version 2.03 running on Duet WiFi 1.02 or later
    Board ID: 08DGM-917DA-G4MS8-6JKD0-3S86J-K9SBA
    Used output buffers: 3 of 24 (20 max)
    === RTOS ===
    Static ram: 25680
    Dynamic ram: 93664 of which 0 recycled
    Exception stack ram used: 452
    Never used ram: 11276
    Tasks: NETWORK(ready,524) HEAT(blocked,1236) MAIN(running,3748) IDLE(ready,160)
    Owned mutexes:
    === Platform ===
    Last reset 01:35:17 ago, cause: power up
    Last software reset at 2019-06-23 22:49, reason: User, spinning module GCodes, available RAM 11380 bytes (slot 3)
    Software reset code 0x0003 HFSR 0x00000000 CFSR 0x00000000 ICSR 0x0441f000 BFAR 0xe000ed38 SP 0xffffffff Task 0x4e49414d
    Error status: 0
    Free file entries: 10
    SD card 0 detected, interface speed: 20.0MBytes/sec
    SD card longest block write time: 13.4ms, max retries 0
    MCU temperature: min 27.2, current 47.0, max 47.5
    Supply voltage: min 23.7, current 24.1, max 24.4, under voltage events: 0, over voltage events: 0, power good: yes
    Driver 0: standstill, SG min/max 0/348
    Driver 1: standstill, SG min/max 0/321
    Driver 2: standstill, SG min/max 0/643
    Driver 3: standstill, SG min/max not available
    Driver 4: standstill, SG min/max not available
    Date/time: 2019-06-26 20:48:58
    Cache data hit count 4294967295
    Slowest loop: 546.79ms; fastest: 0.07ms
    I2C nak errors 0, send timeouts 0, receive timeouts 0, finishTimeouts 0, resets 0
    === Move ===
    Hiccups: 0, FreeDm: 169, MinFreeDm: 106, MaxWait: 580296ms
    Bed compensation in use: none, comp offset 0.000
    === DDARing ===
    Scheduled moves: 0, completed moves: 27, StepErrors: 0, LaErrors: 0, Underruns: 0, 2
    === Heat ===
    Bed heaters = 0 -1 -1 -1, chamberHeaters = -1 -1
    Heater 0 is on, I-accum = 0.0
    Heater 1 is on, I-accum = 0.3
    === GCodes ===
    Segments left: 0
    Stack records: 1 allocated, 1 in use
    Movement lock held by null
    http is idle in state(s) 0 0
    telnet is idle in state(s) 0
    file is idle in state(s) 0
    serial is idle in state(s) 0
    aux is idle in state(s) 0
    daemon is idle in state(s) 0
    queue is idle in state(s) 0
    autopause is idle in state(s) 0
    Code queue is empty.
    === Network ===
    Slowest loop: 56.64ms; fastest: 0.00ms
    Responder states: HTTP(0) HTTP(0) HTTP(0) HTTP(0) FTP(0) Telnet(0) Telnet(0)
    HTTP sessions: 1 of 8

    • WiFi -
      Network state is running
      WiFi module is connected to access point
      Failed messages: pending 0, notready 0, noresp 0
      WiFi firmware version 1.23
      WiFi MAC address b4:e6:2d:53:16:0a
      WiFi Vcc 3.43, reset reason Turned on by main processor
      WiFi flash size 4194304, free heap 25704
      WiFi IP address 192.168.1.145
      WiFi signal strength -59dBm, reconnections 0, sleep mode modem
      Socket states: 0 0 0 0 0 0 0 0


  • @dc42 for the record, my first duet board which failed ran at exact same setup and I never had such problem on that one.

    What is strange, is that I checked retries on this report and you can see it is zero there.

    • SD card longest block write time: 13.4ms, max retries 0

  • administrators

    Yes, that is odd.

    As I said before, I'll support your warranty claim if you want to exchange the Duet.



  • @dc42 Ok, how do I proceed with it, what is the process? I purchased this at matterhackers. I will be at their store next week.


  • administrators

    @vlad, I suggest you email them and direct them to this thread.

    Matterhackers, please exchange Vlad's board.



  • @dc42 ok, will do, thanks!



  • Hi David @dc42 While I am still trying to find a time to drive to matterhackers, I installed another Duet board on this machine that I had handy, and it gives me exact same issue. I am starting to believe that there is no reason to exchange the board if it's gonna have exact same issue.

    Is it possible that I am exceeding a cap for number of commands or reads per second for this MCU?

    Also is it possible to have a workaround in firmware where it reattempts the read again instead of freezing forever? Possibly increase command buffer maybe? Occasional stall wouldn't be so disastrous if firmware could resume printing at least. I usually print high resolution models and at relatively high speeds, but nothing crazy. It froze now at 220mm/s at the curve/fillet location. Never freezes at straight line, so I guess it has to do with some processing cap being reached.

    As a side note, I already reached a cap of print speed with 256 microstepping at 200mm/s. So I have to drop microstepping to 128, and 256 is not really achievable in this case, even on my simple Cartesian machine. Hope you guys soon come up with faster chip 😉

    P.S: I can also provide a factory file from S3D if you want to try to replicate the issue on your machine.


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