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Old 12-28-2021, 08:21 PM   #1
ZDR
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MacBook suddenly won't recognize Libra H20
Hello,

Long time Kobo reader (3 generations), first major issue. My 2016 MacBook Pro (model right before the touchbar) suddenly won't recognize my Libra H20 plugged in. The ereader asks if I want to connect and then starts charging, but the MacBook does not register. This has not happened before.

I was running Big Sur. I updated to Monterrey, still nothing. I plugged it into my wife's 2019 MacBook pro (also running Big Sur) and it worked just fine.

I've updated the firmware, updated Calibre and plug-ins just in case, everything. My Macbook doesn't even register a new storage device plugged in.

Help!
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Old 12-28-2021, 09:33 PM   #2
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My Libra H2O which running 4.17 firmware can not be recognized by Monterrey with M1 Pro MacBook Pro, after update the Libra H20's firmware to 4.30. It can be recognized.
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Old 12-29-2021, 06:46 AM   #3
ZDR
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I am running the latest firmware and updated from Big Sur to Monterrey, no luck.

Should also mention my computer recognizes an external hard drive and USB drive, but not my Kobo for some reason.
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Old 12-29-2021, 11:37 AM   #4
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Quote:
Originally Posted by ZDR View Post
Hello,

Long time Kobo reader (3 generations), first major issue. My 2016 MacBook Pro (model right before the touchbar) suddenly won't recognize my Libra H20 plugged in. The ereader asks if I want to connect and then starts charging, but the MacBook does not register. This has not happened before.

I was running Big Sur. I updated to Monterrey, still nothing. I plugged it into my wife's 2019 MacBook pro (also running Big Sur) and it worked just fine.

I've updated the firmware, updated Calibre and plug-ins just in case, everything. My Macbook doesn't even register a new storage device plugged in.

Help!
Try replacing the USB cable.
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Old 12-30-2021, 09:53 AM   #5
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Try replacing the USB cable.

Unfortunately no, I tried multiple and no luck. I also used that cable with my wife's MacBook and it worked just fine.

Was hoping this was a known issue, but it seems not...
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Old 12-30-2021, 11:51 PM   #6
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Originally Posted by ZDR View Post
Was hoping this was a known issue, but it seems not...
There have been plenty of different issues with MACs over the years. Different upgrades of the OS or the hardware have lead to different things. They range from simple things like the OS mounting the device read-only, to something preventing the device being recognised. There were changes in one of the recent firmware (not sure if it was in 4.28.x or 4.30.x) to help them be seen, but, I understood that was with the M1 based MACs, not the older ones. It might be worthwhile rolling back the firmware to test if that was the cause. But, I think it is more like a change on the MAC. Either a "fix" or a change in permissions blocking the device.

Beyond that, I can only suggest searches here to see how people have solved problems. I don't have a MAC, and have no personal experience with them.
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Old 12-31-2021, 01:10 AM   #7
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Quote:
Originally Posted by ZDR View Post
Hello,

Long time Kobo reader (3 generations), first major issue. My 2016 MacBook Pro (model right before the touchbar) suddenly won't recognize my Libra H20 plugged in. The ereader asks if I want to connect and then starts charging, but the MacBook does not register. This has not happened before.

I was running Big Sur. I updated to Monterrey, still nothing. I plugged it into my wife's 2019 MacBook pro (also running Big Sur) and it worked just fine.

I've updated the firmware, updated Calibre and plug-ins just in case, everything. My Macbook doesn't even register a new storage device plugged in.

Help!

Have you installed any new applications recently?

Any new software/hardware that needed drivers recently?

Is your Mac connected to any other external device using another USB port?
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Old 01-03-2022, 08:26 AM   #8
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Quote:
Originally Posted by davidfor View Post
Beyond that, I can only suggest searches here to see how people have solved problems. I don't have a MAC, and have no personal experience with them.
Just letting you know it's "Mac", not "MAC" (gets confusing just because MAC means something different).

I've had very sporadic connection issues. Every time it's been solved with a restart.
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Old 01-03-2022, 07:24 PM   #9
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Just letting you know it's "Mac", not "MAC" (gets confusing just because MAC means something different).
I could have sworn I went looking at some point and it was all uppercase. But, looking now it definitely isn't.
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