PiTFT drivers blocking /dev/video0

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parkview
 
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Joined: Sat Jul 21, 2012 9:47 pm

PiTFT drivers blocking /dev/video0

Post by parkview »

I noticed yesterday that /dev/video0 wasn't being created when I plugged in a webcam. I tried two different webcams to no avail.

With noting to loose, I ran all the RPi updates, including updating the kernel to 3.12.22. All of a sudden my webcams all worked.

Then I noticed that the PiTFT drivers where not being loaded, and that /dev/fb1 was not being created. I then ran through the PiTFT software install which reloaded the kernel drivers again.

After the next reboot, I noticed that /dev/fb1 was back and usable, but /dev/video0 was missing.

To me it seems that loading one of the *.deb files is blocking the creation of /dev/video0 so I can't use both webcam and PiTFT.

Does anyone else have this issue?

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adafruit_support_mike
 
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Re: PiTFT drivers blocking /dev/video0

Post by adafruit_support_mike »

[moved to the RasPi forum]

You're probably right that one set of modules clobbers the other, but I don't know whether that indicates a fundamental problem or is just a quirk of how things were configured on the build server.

I'll check with the PiTFT team to see if they have more information.

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adafruit2
 
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Re: PiTFT drivers blocking /dev/video0

Post by adafruit2 »

It would be super helpful if you can post the dmesg output from your 'working' setup once the /dev/video0 is created! please post if you can :)

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