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Device keeps switching between mass storage and regular when connected to PC USB

mogulman
over 2 years ago

I have a Garmin Edge 530 firmware 9.50.  I connected it to my PC and Garmin Express to update maps.  I noticed that the Edge device switches back and forth between regular mode (booted up) and Mass Storage mode.  I'm not sure if it takes a specific amount of time, or if there is some tasks that is causing this.

I tried holding the lap button to force Mass Storage mode, and then hooking the device to my PC.  Seemed to work.  Connected Garmin Express and seemed to work fine for a few minutes (less than 5).  Closed Garmin Express and left the device connected and it automatically switched back into normal booted up mode.

The problem is that during a map update earlier, the edge switched modes half-way through.  I had to disconnect and reconnect the USB cord, and it continued, but worried that if I had gotten farther into the update, it would have caused corruption.

Is there some kind of timeout on Mass Storage mode?

I tried different USB cables and different USB Ports.

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  • 0 over 2 years ago

    Perhaps it is another bug of 9.50 version. Install 9.10

  • 0 over 2 years ago

    1. Are you using a Garmin branded cable? 
    2. Is your PC going to sleep during the map update? Check your computers power and sleep settings.
    3. Have you tried this on a different computer with the same results?
    4. What version of Garmin Express are you running? Updating the Garmin Express Application Software
    5. What make and model of computer are you using? 
    6. Do I have permission to contact you directly via email? 
  • 0 over 2 years ago in reply to Garmin-Eiliko

    1. No idea.  It's been a long time since I got my GPS, and have moved houses since then.   I did try 3 different micro-usb cables.

    2. no.  I was sitting in front of the computer watching the update.

    3. I didn't try another computer, but I can.

    4.   7.14.0.0

    5. HP Spectre X360 with Windows 11 Pro 11H2

    6. sure

  • +1 over 2 years ago

    Ok... so this isn't a Garmin issue.  It's an issue with my PC and/or Windows 11 settings.  Default settings for my PC is to go to sleep after 5 minutes.

    I was using Remote Desktop (RDP) to get to my PC that the Garmin Edge 530 was physically connected to.

    The PC was going to sleep after 5 minutes, although I couldn't tell because the RDP session was staying active.   I could actually work on the PC even when it was in a semi-sleep state.  When it went into this sleep/semisleep state, the USB port was disconnecting, causing the Edge 530 to Boot, because the USB port was disconnected.  

    I would disconnect the USB cable and reconnect, but with the PC in this state, the USB port would disconnect again after less than 5 minutes, because the PC was still in some kind of semi-sleep state, even though I was connected via RDP.  The laptop screen would be blank/timed out.

    The behavior was similar but different when physicially using the laptop rather than RDP.   I could see the USB port disconnect after 5 minutes when the PC went to sleep.  The difference is that if I wake the PC up, because I was actively using the PC, I wouldn't have the issue.  So it wasn't timing out.

    Changing the settings on the USB ports to not allow them to go to sleep, didn't seem to change anything.  I could adjust my sleep setting, but now that I know what is happening I think I'm fine.

    Anyway...  Summary..   Using RDP to get to a PC that has Garmin Express/GPS connected can timeout your USB ports without you knowing it.  Don't use RDP.